Summary: The posterior humeral head subluxation and glenoid retroversion, which are pathoneumonic of the Walch type B shoulder, may lead to a disturbance in the length-tension relationship of the posterior rotator cuff, thus causing geographic fatty infiltration.

Background

The etiology of the Walch type B shoulder remains unclear. We hypothesize that a scapulohumeral muscle imbalance, secondary to a disturbed transverse force couple (TFC) between the anterior and posterior rotator cuff muscles, may have a role in the pathogenesis of the type B morphology. The purpose of this study was to determine whether there is a transverse force couple imbalance in the Walch type B shoulder using an imaging-based 3D volumetric and fatty infiltration assessment of segmented rotator cuff muscles.

Methods

CT images of 33 Walch type A and 60 Walch type B shoulders with the complete scapula and humerus including the distal humeral epicondyles were evaluated. The 3D volumes of the entire subscapularis, supraspinatus, infraspinatus and teres minor were manually segmented and analyzed. Additionally, anthropometric parameters including glenoid version, glenoid inclination, posterior humeral head subluxation and humeral torsion were measured. The 3D muscle analysis was then compared to the anthropometric parameters using Wilcoxon rank-sum and Kruskal-Wallis tests.

Results

There were no significant differences (p>0.200) in muscle volume ratios between the infraspinatus-teres minor (Infra-Tm) and the subscapularis in Walch type A (0.93) and type B (0.96) shoulders. The fat infiltration percentage ratio, however, was significantly greater in type B shoulders (0.94 vs 0.75; p<0.001). The Infra-Tm to subscapularis fat infiltration percentage ratio was significantly larger in patients with >75% humeral head subluxation than 60-75% head subluxation (0.97 vs 0.74, p<0.001) and those with >25° retroversion than =15° retroversion (1.10 vs 0.75, p=0.004). The supraspinatus fatty infiltration percentage was significantly lower in Walch type B shoulders than type A shoulders (p=0.004). The Walch type A Shoulders had a mean humeral retrotorsion of 22±10°, while the Walch B types had a humeral retrotorsion of only 14±9° relative to the epicondylar axis (p<0.001).

Conclusion

Although the transverse force couple is in balance in the Walch type B shoulder in terms of 3D volumetric rotator cuff muscle analysis but the posterior rotator cuff has increased fatty infiltration. Posterior humeral head subluxation and glenoid retroversion, which are pathoneumonic of the Walch type B shoulder may lead to a disturbance in the length-tension relationship of the posterior rotator cuff causing fatty infiltration.

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Reliable Clinical and Sonographic Outcomes of Subpectoral Biceps Tenodesis using an All-Suture Anchor Onlay Technique ePoster Presentation Hannes Degenhardt, MD, GERMANY Marco-Christopher Rupp, MD, GERMANY Jonas Pogorzelski, MD, PhD, MHBA, GERMANY Alexander Themessl, MD, GERMANY Lukas Nawid Muench, MD, GERMANY Judith Wechselberger , MD, GERMANY Klaus Wörtler, MD, Prof., GERMANY Sebastian Siebenlist, MD, MHBA, Prof., GERMANY Andreas B. Imhoff, MD, Prof. Emeritus, GERMANY Bastian Scheiderer, MD, GERMANY
Dermal Patch Augmented Versus Standard Rotator Cuff Repair: Randomised Controlled Trial Abstract Presentation 4 minutes Priyadarshi Amit, MS, DNB, MRCSEd, MCh, FRCS, UNITED KINGDOM Martyn Snow, FRCS, UNITED KINGDOM
Minimum 10-Year Clinical And Functional Outcomes Following Arthroscopic 270° Labral Repair In Traumatic Shoulder Instability Involving Anterior, Inferior, And Posterior Labral Injury Abstract Presentation 6 minutes Daniel P. Berthold, Association.-Prof., GERMANY Matthew R. Levasseur, MD, UNITED STATES Lukas Nawid Muench, MD, GERMANY Michael R. Mancini, BS, UNITED STATES Julianna Lee, BS, UNITED STATES Knut Beitzel, Prof. Dr., GERMANY Andreas B. Imhoff, MD, Prof. Emeritus, GERMANY Robert A. Arciero, MD, UNITED STATES Bastian Scheiderer, MD, GERMANY Sebastian Siebenlist, MD, MHBA, Prof., GERMANY Augustus D. Mazzocca, MS, MD, UNITED STATES
Incidence And Complications Of Primary And Revision Shoulder Arthroplasty From 2010-2018 Abstract Presentation 5 minutes Christopher L. McCrum, MD, UNITED STATES Jacob Thomas Wood, BS, UNITED STATES Michael Khazzam, MD, UNITED STATES Senthil Sambandam, MD, UNITED STATES
Kinematic Changes Are Associated With Improved Outcomes Following Superior Capsular Reconstruction Abstract Presentation 5 minutes Clarissa Levasseur, MS, UNITED STATES Gillian Kane, BS, UNITED STATES Jonathan D Hughes, MD, PhD, UNITED STATES Adam J. Popchak, DPT, PhD, UNITED STATES James J. Irrgang, PT, PhD, FAPTA, UNITED STATES William Anderst, PhD, UNITED STATES Albert Lin, MD, UNITED STATES
Correlation Between Shoulder Function and Radiologic Severity of Supraspinatus Pathology Abstract Presentation 4 minutes Stephen M Gillinov, AB, UNITED STATES Nathan Varady, MD, MBA, UNITED STATES Paul F Abraham, BS, UNITED STATES Michael Peter Kucharik, BS, UNITED STATES Christopher T Eberlin, BS, UNITED STATES Scott D Martin, MD, UNITED STATES
Utilization Of Patient-Reported Outcomes Measurement Information System (Promis) For Operative Shoulder Outcomes. ePoster Presentation Ilona Schwarz, MS, UNITED STATES John-Rudolph H. Smith, BS, UNITED STATES Darby Adele Houck, BA, UNITED STATES Rachel M. Frank, MD, UNITED STATES Jonathan T. Bravman, MD, UNITED STATES Eric C. McCarty, MD, UNITED STATES
Coracoclavicular Fixation Techniques For Neer IIb And ‘Extra-Lateral’ Fractures Of The Distal Clavicle: A Systematic Review And Case Series ePoster Presentation Andreas Panagopoulos, Professor , GREECE Solou Konstantina, MD, MSc, GREECE Marios Nicolaides, MSc, UNITED KINGDOM Ioannis K Triantafyllopoulos, MD, MSci, PhD, FEBOT, GREECE Antonios T. Kouzelis, MD, PhD, GREECE Zinon Kokkalis
Arthroscopic Latarjet Procedure For Recurrence Of Anterior Shoulder Instability After Failed Arhroscopic Bankart Repair Abstract Presentation 4 minutes Manuel Olmos, MD, ARGENTINA Mikaël Chelli, MD, FRANCE Jakub Stefaniak, MD, POLAND David J Saliken, MD FRCSC, CANADA Patrick Gendre, MD, FRANCE Gilles Clowez, MD, FRANCE Pascal Boileau, MD, Prof., FRANCE
Systematic Review Of Arthroscopic Reconstruction Of Isolated Subscapularis Tendon Tear: Results, Role Of Coracoplasty And Management Of The Biceps Tendon Abstract Presentation 5 minutes Pablo A. Narbona, MD, ARGENTINA Rafael Norberto Martinez Gallino, MD, ARGENTINA Manuel Olmos, MD, ARGENTINA Gabriel Arce, MD, ARGENTINA
Ligamentous And Capsular Contributions To Anterior-Posterior And Superior-Inferior Stability Of The Acromioclavicular Joint Abstract Presentation 4 minutes Mohamed Alkoheji, MB BCh FRCS (Tr&Orth), BAHRAIN Jillian Lee, BHB, MBChB, FRACS (Ortho), NEW ZEALAND Hadi El-Daou, PhD, UNITED KINGDOM Adrian Carlos, MB ChB MSc FRCS (Tr&Orth), UNITED KINGDOM Livio Di Mascio, MBBS FRCS (Tr&Orth), UNITED KINGDOM Andrew A. Amis, FREng, DSc, PhD, UNITED KINGDOM
Outcomes Following Open Latarjet Procedure With Associated Rotator Cuff Repair ePoster Presentation Peter Domos, MD, FRCS(Tr&Orth), UNITED KINGDOM Mikaël Chelli, MD, FRANCE Lionel Neyton, MD, FRANCE Arnaud Godeneche, FRANCE Gilles Walch, MD, FRANCE
Goutallier Classification Reliability May Be Impacted By The Size Of The Rotators Cuff Tear. Abstract Presentation 3 minutes Adam Kwapisz, MD, PhD, POLAND Sheila McRae, PhD, MSc, CANADA Urszula Smyczynska, PhD, POLAND James Koenig, MD, CANADA Graeme Matthewson, MD, CANADA Jarret M. Woodmass, MD, FRCSC, CANADA Fleur Verhulst, MD, NETHERLANDS Yiyang Zhang, MD, CANADA Laurie Stillwater, MD, CANADA Jason A. Old, MD, FRCSC, CANADA Peter B. MacDonald, MD, FRCS, Dip Sport Med, CANADA
Micromotion Of Symmetry And Asymmetry Prostheses Designs With Different Curvature And Variable Peg Length Cemented And Uncemented Using Finite Element Analysis. ePoster Presentation Farid Amirouche, PhD, UNITED STATES Jason L. Koh, MD, MBA, UNITED STATES Siddhant Thakur, MS, UNITED STATES
T2 Mapping Quantitative MRI Evaluation of Operatively Treated Anterior Shoulder Instability ePoster Presentation Forrest L. Anderson, MD, UNITED STATES Eric A Schweppe, MS, UNITED STATES Nathan S Lanham, MD, UNITED STATES Cesar D Lopez, BS, UNITED STATES Tony T. Wong, MD, UNITED STATES Charles Mitchell Jobin, MD, UNITED STATES
Outcomes Of Arthroscopic Latarjet Procedure For Anterior Glenohumeral Instability In Patients With Epilepsy. A Case-Control Study Abstract Presentation 4 minutes Lika Dzidzishvili, MD, PhD, SPAIN Claudio Calvo Palma, MD, PhD, CHILE María Valencia Mora, MD, PhD, SPAIN Diana Morcillo Barrenechea, MD, SPAIN Antonio Foruria, MD, PhD, SPAIN Emilio Calvo, MD, PhD, MBA, SPAIN
Open Versus Modi?ed Arthroscopic Treatment Of Acute Acromioclavicular Dislocation Using A Single Tight Rope: Randomized Comparative Study Of Clinical Outcome And Cost-Effectiveness ePoster Presentation Tarek M. T. Ghandour, MD, EGYPT
Type Iv and V Acromioclavicular Dislocation: Long Terms Results Of Conservative Treatment In Rugby Players. Abstract Presentation 5 minutes Franco Della Vedova, ARGENTINA Matias Orlando, Md, ARGENTINA Hernan Galan, MD, ARGENTINA Daniel A. Slullitel, MD, Prof., ARGENTINA
Differences in Glenohumeral Joint Capsule Dimensions on MR Analysis in Adolescent Patients with MDI and Bankart Tear Abstract Presentation 4 minutes Mason Cole Yoder, BS, UNITED STATES Colin McDonald, MD, UNITED STATES Shital N. Parikh, MD, UNITED STATES
Anterior Deltoid Muscle Reflection in a Deltopectoral Approach is Safe and Does not Influence the Outcome of Reversed Shoulder Arthroplasty. Abstract Presentation 5 minutes Bart-Jan Jd Veen, MD, NETHERLANDS Esther J Smits, PhD, AUSTRALIA Andrew Ker, MBChB, BSc (Hons), FRCSed (T+O), UNITED KINGDOM Brandon Ziegenfuss, BSc(Hons) MPH, AUSTRALIA Ashish Gupta, MBBS, MSc, FRACS, FAORTHOA, AUSTRALIA Kenneth Cutbush, MBBS, FRACS, FAOrthA, AUSTRALIA
Subscapularis-Sparing Approaches In Shoulder Arthroplasty: A Systematic Review ePoster Presentation Sandra Lee, BSc (Cand), CANADA Huda Sardar, BSc (Cand), CANADA Nolan Horner, MD, CANADA Latifah Al Mana, MBBS, CANADA Bruce S. Miller, MD, MS, UNITED STATES Moin Khan, MD, MSc, FRCSC, CANADA Bashar Alolabi, MD, MSc, FRCSC, CANADA
Does Acromioclavicular Joint Tenderness Affect The Outcome Of Rotator Cuff Repair? A Prospective Cohort Study ePoster Presentation Priyadarshi Amit, MS, DNB, MRCSEd, MCh, FRCS, UNITED KINGDOM Shahbaz S Malik, BSc, MB BCh, MSc (Orth Engin), LLM, FRCS (Tr&Orth), UNITED KINGDOM Samir Massoud, FRCS, UNITED KINGDOM
Do Pre-Op Corticosteroid Injections Increase Infections, Re-Ruptures And Revisions In Primary Arthroscopic Rotator Cuff Repair? Abstract Presentation 4 minutes Kevin D. Plancher, MD, MPH, UNITED STATES Grace Plassche, BS, UNITED STATES Stephanie C. Petterson, MPT, PhD, UNITED STATES
Effect of Electronic Medical Record Usage on Orthopaedic Surgeon Physician Burnout ePoster Presentation Christopher John Como, BSE, UNITED STATES Jonathan D Hughes, MD, PhD, UNITED STATES Albert Lin, MD, UNITED STATES
Biomechanical Comparison Of New Transosseous Rotator Cuff Repair Technique Versus Conventional Transosseous And Transosseous Equivalent Technique ePoster Presentation Suwittaya Thienpratharn, MD, THAILAND Ekavit Keyurapan, MD, THAILAND
The Anatomical Concave Surface Area Method, a 3-Dimensional Quantification of Glenoid Bone Loss in Shoulder Instability Abstract Presentation 5 minutes Marine Launay, MEng, AUSTRALIA Muhammad Naghman Choudhry, MBChB, MRCS, FRCS, AUSTRALIA Nicholas Green, MEng, BDes, AUSTRALIA Jashint Maharaj, MBBS, FRSPH, AUSTRALIA Peter Pivonka, PhD, AUSTRALIA Kenneth Cutbush, MBBS, FRACS, FAOrthA, AUSTRALIA Ashish Gupta, MBBS, MSc, FRACS, FAORTHOA, AUSTRALIA
Survivorship And Patient-Reported Outcomes After Comprehensive Arthroscopic Management Of Glenohumeral Osteoarthritis: Minimum 10-Year Follow-Up Abstract Presentation 4 minutes Justin W. Arner, MD, UNITED STATES Bryant Elrick, MS, UNITED STATES Daniel B. Haber, MD, UNITED STATES Philip Nolte, MD, UNITED STATES Marilee P. Horan, MPH, UNITED STATES Peter J. Millett, MD, MSc, UNITED STATES
Increased Glenohumeral Joint Loads Due To A Supraspinatus Tear Can Be Reversed With Rotator Cuff Repair: A Biomechanical Investigation Of Joint Preservation Award Winner 5 minutes Lukas Nawid Muench, MD, GERMANY Daniel P. Berthold, Association.-Prof., GERMANY Alexander Otto, MD, GERMANY Felix Dyrna, MD, GERMANY Ryan M Bell, BS, UNITED STATES ELIFHO OBOPILWE, ME, BSc, UNITED STATES Mark P. Cote, PT, DPT, MSCTR, UNITED STATES Andreas B. Imhoff, MD, Prof. Emeritus, GERMANY Augustus D. Mazzocca, MS, MD, UNITED STATES Knut Beitzel, Prof. Dr., GERMANY
Preoperative Computerized Tomography Predicts Coracoid Graft Size And Restoration Of The Glenoid Track In Patients Undergoing Latarjet Procedures Abstract Presentation 8 minutes Brian M Godshaw, MD, UNITED STATES Jonathan D Hughes, MD, PhD, UNITED STATES Stephanie Boden, MD, UNITED STATES Albert Lin, MD, UNITED STATES Bryson P. Lesniak, MD, UNITED STATES
Osteochondritis Dissecans Of The Glenoid : An Analysis Of Grades, Treatment And Outcomes. ePoster Presentation Dinshaw Pardiwala, MS(Orth), DNB(Orth), FCPS, INDIA Kushalappa Subbiah, MS(Orth), INDIA Nandan N Rao, M.B.B.S, M.S Orthopaedics, INDIA
Evaluation Of Short To Mid-Term Outcomes Following Shoulder Hemiarthroplasty For Avascular Necrosis Of The Humeral Head In Patients 40 Years And Younger ePoster Presentation Matthew Hrin, BA, UNITED STATES Edward C Beck, MD, MPH, UNITED STATES Evan Miller, MD, UNITED STATES Alexander Weimer, BS, UNITED STATES Colin M Robbins, BA, UNITED STATES John Hunter Matthews, MD, UNITED STATES Michael T. Freehill, MD, UNITED STATES Christopher J Tuohy, MD, UNITED STATES Ethan R. Wiesler, MD, UNITED STATES Benjamin R. Graves, MD, UNITED STATES Brian R. Waterman, MD, UNITED STATES
The Latarjet Procedure In Competitive Athletes Younger Than 20 Years Old With A Significant Glenoid Bone Loss Abstract Presentation 4 minutes Luciano Rossi, PhD, ARGENTINA Ignacio Tanoira, MD PhD, ARGENTINA Ignacio Pasqualini, MD, ARGENTINA Maximiliano Ranalletta, MD, ARGENTINA
A Multicenter Randomized Controlled Trial Comparing Single-Row With Double-Row Fixation In Arthroscopic Cuff Repair: Long Term Follow-Up Abstract Presentation 4 minutes Peter Lapner, MD, FRCSC, CANADA Ang Li, MD FRCSC, CANADA J Whitcomb Pollock, MD FRCSC, CANADA Tinghua Zhang, MSc, CANADA Katie McIlquham, CANADA Sheila McRae, PhD, MSc, CANADA Peter B. MacDonald, MD, FRCS, Dip Sport Med, CANADA
How Glenohumeral Stability Is Affected by Concavity, Chondral Integrity, Bony Defects, and Bone Block Reconstructions of the Glenoid ePoster Presentation Jens Wermers, Prof., GERMANY Benedikt Schliemann, MD, GERMANY Michael J. Raschke, MD, Prof., GERMANY Philipp Michel, MD, GERMANY Lukas F. Heilmann, MD, GERMANY Felix Dyrna, MD, GERMANY Julia Sußiek, , GERMANY Andre Frank, MSc, GERMANY J. Christoph Katthagen, MD, GERMANY
Suprascapular Nerve Block Provides Adequate Analgesia Following Shoulder Arthroscopy ePoster Presentation Michael Warren, MD, UNITED STATES Brian M Godshaw, MD, UNITED STATES Michael Nammour, MD, UNITED STATES Misty Suri, MD, UNITED STATES
Reverse Total Shoulder Arthroplasty For Glenoid Bone Loss Without A Rotator Cuff Tear: A Concise Follow Up At A Minimum Of Five Years ePoster Presentation Stephen C. Weber, MD, UNITED STATES Edward G McFarland, MD, FAAOS, UNITED STATES Prashant Meshram, MBBS, MS, DNB (Ortho), UNITED ARAB EMIRATES Jorge Rojas Llevano, MD, COLOMBIA Jacob Joseph, BS, UNITED STATES Uma Srikumaran, MD, MBA, MPH, UNITED STATES
The Association of Charlson and Elixhauser Comorbidity Indices and Patient-Reported Outcomes in a Population Undergoing Shoulder Arthroplasty ePoster Presentation William A. Marmor, MD, UNITED STATES Brandon Schneider, MS, UNITED STATES Gabriella Ode, MD, UNITED STATES Lawrence V. Gulotta, MD, UNITED STATES Daphne Ling, PhD, MPH, TAIWAN
Outcome Comparison Of Graft Bridging And Superior Capsule Reconstruction For Large To Massive Rotator Cuff Tears Abstract Presentation 4 minutes Jinrong Lin, CHINA Yaying Sun, MD, CHINA Shaohua Liu, MD, CHINA Zheci Ding, MD, CHINA Jiwu Chen, MD, PhD, CHINA
Understanding The Reasons Why Patients Do Not Achieve An Acceptable Symptom State After Reverse Shoulder Arthroplasty Abstract Presentation 5 minutes Brian C Werner, MD, UNITED STATES Evan Lederman, MD, UNITED STATES Reuben Gobezie, MD, UNITED STATES Patrick J. Denard, MD, UNITED STATES
Comparison Of Clinical And Structural Outcomes By Subscapularis Tendon Status In Massive Rotator Cuff Tear ePoster Presentation Jeong-Woo Kim, MD, KOREA, REPUBLIC OF
Acromioclavicular Joint Reconstruction Implants Have Differing Ability To Restore Horizontal And Vertical Plane Stability Abstract Presentation 4 minutes Mohamed Alkoheji, MB BCh FRCS (Tr&Orth), BAHRAIN Jillian Lee, BHB, MBChB, FRACS (Ortho), NEW ZEALAND Hadi El-Daou, PhD, UNITED KINGDOM Adrian Carlos, MB ChB MSc FRCS (Tr&Orth), UNITED KINGDOM Livio Di Mascio, MBBS FRCS (Tr&Orth), UNITED KINGDOM Andrew A. Amis, FREng, DSc, PhD, UNITED KINGDOM
The epidemiology of acute acromioclavicular dislocations in an urban population. A prospective cohort study investigating the capital region of Denmark ePoster Presentation Kristine Bramsen Haugaard, MD, DENMARK Klaus Bak, MD, DENMARK Per Hölmich, DMSc, Prof., DENMARK Kristoffer Michael Seem, MD, DENMARK Kristoffer W. Barfod, MD, PhD, Prof., DENMARK
Influence Of Age On Outcomes After Arthroscopic Rotator Cuff Repair Of Distal Supraspinatus Tear ePoster Presentation Maxime Antoni, MD, FRANCE Agostino Ricotta, MD, FRANCE Clément Dujeux, MD, FRANCE Charles Thery, MD, FRANCE Philippe Clavert, MD, PhD, FRANCE
Comparison Of Lower Trapezius And Latissimus Dorsi Transfer For Irreparable Posterosuperior Rotator Cuff Tears: A Dynamic Biomechanical Investigation Abstract Presentation 5 minutes Lukas Nawid Muench, MD, GERMANY Daniel P. Berthold, Association.-Prof., GERMANY Cameron Kia, MD, UNITED STATES ELIFHO OBOPILWE, ME, BSc, UNITED STATES Mark P. Cote, PT, DPT, MSCTR, UNITED STATES Andreas B. Imhoff, MD, Prof. Emeritus, GERMANY Bastian Scheiderer, MD, GERMANY Bassem T. Elhassan, MD, UNITED STATES Knut Beitzel, Prof. Dr., GERMANY Augustus D. Mazzocca, MS, MD, UNITED STATES
Treatment of Primary Shoulder Stiffness: Results of Survey on Surgeon Practice Patterns ePoster Presentation Davide Cucchi, MD, GERMANY Silvana de Giorgi, MD, ITALY Maristella Francesca Saccomanno, MD, PhD, ITALY Francesco Mattia Uboldi, MD, ITALY Alessandra Menon, MD, ITALY Max Julian Friedrich, MD, GERMANY Pietro S. Randelli, MD, Prof., ITALY Antonio Marmotti, ITALY Laura de Girolamo, PhD, ITALY
Real World Survey Burden Of Common Patient-Reported Outcome Measures Utilized In Shoulder Surgery ePoster Presentation Darby Adele Houck, BA, UNITED STATES Ian L Verbeck, MS, UNITED STATES Eric C. McCarty, MD, UNITED STATES Rachel M. Frank, MD, UNITED STATES Michelle Wolcott, MD, UNITED STATES Adam Seidl, MD, UNITED STATES Jonathan T. Bravman, MD, UNITED STATES
Does Oral Stain Use Affect Rotator Cuff Healing or Muscle Fatty Atrophy after Rotator Cuff Repair? Abstract Presentation 4 minutes Priyadarshi Amit, MS, DNB, MRCSEd, MCh, FRCS, UNITED KINGDOM Jan Herman Kuiper, M.Sc. Ph.D., UNITED KINGDOM Martyn Snow, FRCS, UNITED KINGDOM
Outcomes Of Obstructive Sleep Apnea Patients Undergoing Rotator Cuff Repair Abstract Presentation 5 minutes Andres Barandiaran, MS, UNITED STATES Rachel M. Frank, MD, UNITED STATES Jonathan T. Bravman, MD, UNITED STATES Adam Seidl, MD, UNITED STATES Eric C. McCarty, MD, UNITED STATES
Health Literacy in Shoulder Arthroscopy: A Quantitative Assessment of the Understandability and Readability of Online Patient Education Material ePoster Presentation Olivia O'Reilly, MD, UNITED STATES Mary Kate Skalitzky, BA, UNITED STATES Kyle Kesler, MD, UNITED STATES Alan Shamrock, MD, UNITED STATES Burke Gao, MD, UNITED STATES Trevor Gulbrandsen, MD, UNITED STATES Matthew J. Bollier, MD, UNITED STATES
Higher Recurrence And Revision Rates With Arthroscopic Bankart Repair Compared To The Latarjet Procedure In Competitive Rugby Players With Glenohumeral Instability And A Glenoid Bone Loss < 20% ePoster Presentation Luciano Rossi, PhD, ARGENTINA Ignacio Tanoira, MD PhD, ARGENTINA Ignacio Pasqualini, MD, ARGENTINA Tomás David Gorodischer, MD, ARGENTINA Maximiliano Ranalletta, MD, ARGENTINA
Arthroscopic Bankart Repair Using Clavicle Autograft in High Risk Patients ePoster Presentation Jeffrey S. Abrams, MD, UNITED STATES
Why Athletes Don’T Return To Sports After Arthroscopic Bankart Repair? A Comparative Study Of 230 Athletes With A Mínimum 2 Years Follow-Up ePoster Presentation Luciano Rossi, PhD, ARGENTINA Ignacio Tanoira, MD PhD, ARGENTINA Ignacio Pasqualini, MD, ARGENTINA Rodrigo Nicolás Brandariz, MD, ARGENTINA Maximiliano Ranalletta, MD, ARGENTINA
Defining Critical Glenoid Bone Loss In Posterior Shoulder Capsulolabral Repair Abstract Presentation 5 minutes Justin W. Arner, MD, UNITED STATES Joseph J. Ruzbarsky, MD, UNITED STATES Kaare Midtgaard, MD, NORWAY Liam A. Peebles, BA, UNITED STATES James P. Bradley, MD, UNITED STATES Matthew T. Provencher, MD, UNITED STATES
Do Psychosocial Factors Affect Outcomes After Arthroscopic Rotator Cuff Repair? ePoster Presentation Maxime Antoni, MD, FRANCE Clément Dujeux, MD, FRANCE Charles Thery, MD, FRANCE Philippe Clavert, MD, PhD, FRANCE
Is it inevitable to have dynamic horizontal acromioclavicular joint instability with single Tightrope? A clinical retrospective study. ePoster Presentation Mohamed Safaa Eldeen Arafa, MD, EGYPT Mohamed Ibrahim, MD, EGYPT Alexandre Lädermann, MD, SWITZERLAND
Urinary Tract Infections Diagnosed Within Two Weeks Prior To Shoulder Arthroplasty Are Associated With Increased Postoperative Infection Rates Abstract Presentation 3 minutes Jourdan Michael Cancienne, MD, UNITED STATES Brian C Werner, MD, UNITED STATES
Failure After Arthroscopic Acromioclavicular Fixation Using Tight Rope; Is It Related To Coracoid Tunnel Dilatation! A Ct Based Study ePoster Presentation Begad H. M. Z. Abdelrazek, M.Sc., MD, FRCS Trauma and Orthopedics, EGYPT Mohamed Refaat Waly, MD,MRCS, EGYPT Ahmed Fouad Seifeldin , MD, MRCS, EGYPT Ahmed Samir Samir Elkalyoby, MD, EGYPT Ahmed Rezk, EGYPT Khaled As Shohayeb, MD, Prof., EGYPT
Timing Of Return To Hitting Following Ulnar Collateral Ligament Reconstruction In Professional Baseball Players Abstract Presentation 5 minutes Brandon Erickson, MD, UNITED STATES Peter Chalmers, MD, UNITED STATES John D'Angelo, BA, UNITED STATES Kevin Ma, BS, UNITED STATES Scott Sheridan, ATC, UNITED STATES Mark Steven Schickendantz, MD, UNITED STATES Anthony A. Romeo, MD, UNITED STATES
Acromioclavicular Joint Disc Injury. Clinical Outcomes From Arthroscopic Resection of the Distal Clavicle and Joint. ePoster Presentation John Adam, FRCS Tr & Orth, UNITED KINGDOM Pratima Khincha, MBBS, D.Orth, M.Ch. , MRCS, FRCS T&O Edin Uk, INDIA Neil Jain, BM, MRCS(Ed), FRCS(Tr&Orth), UNITED KINGDOM
From open to arthroscopic Latarjet; An evaluation of the learning curve of the first 103 cases Abstract Presentation 5 minutes Berte Bøe, MD, PhD, NORWAY Ingvild Blich, PT, NORWAY Ragnhild Øydna Støen, MD, PhD, NORWAY Gilbert Moatshe, MD, PhD, NORWAY Tom Clement Ludvigsen, MD, NORWAY
Significant Variability Exists In Preoperative Planning Software Measures Of Glenoid Morphology For Shoulder Arthroplasty Abstract Presentation 5 minutes Nicholas C. Laucis, MD, UNITED STATES Alex R. Webb, MD, UNITED STATES David X. Wang, MD, UNITED STATES Daniel M Dean, MD, UNITED STATES Joseph L. Rabe, MD, UNITED STATES David Matthew Lutton, MD, UNITED STATES Steven B Soliman, DO, RMSK, UNITED STATES Blake M. Bodendorfer, MD, UNITED STATES
High Variability In Functional Outcomes And Recurrences Between Contact/Collision Sports After Arthroscopic Bankart Repair. A Comparative Study Of 351 Patients With A Minimum 3-Year Follow-Up Abstract Presentation 4 minutes Luciano Rossi, PhD, ARGENTINA Ignacio Tanoira, MD PhD, ARGENTINA Tomás David Gorodischer, MD, ARGENTINA Ignacio Pasqualini, MD, ARGENTINA Maximiliano Ranalletta, MD, ARGENTINA
Health Literacy in Shoulder Labral Repair: A Quantitative Assessment of the Understandability and Readability of Online Patient Education Material ePoster Presentation Olivia O'Reilly, MD, UNITED STATES Mary Kate Skalitzky, BA, UNITED STATES Alan Shamrock, MD, UNITED STATES Burke Gao, MD, UNITED STATES Trevor Gulbrandsen, MD, UNITED STATES Brendan Patterson, MD, UNITED STATES
Histological changes during healing with autologous fascia lata graft after superior capsule reconstruction for the irreparable supraspinatus tear in a rabbit model Abstract Presentation 5 minutes Akihiko Hasegawa, MD, PhD, JAPAN Teruhisa Mihata, MD, PhD, JAPAN Yasuo Itami, MD, PhD, JAPAN Kunimoto Fukunishi, MD, JAPAN Masashi Neo, MD, PhD, Prof., JAPAN
Interrater Reliability of Novice Sonographers Performing Ultrasonographic Measurements of Subacromial Structures in Patients With Subacromial Pain. Abstract Presentation 4 minutes Karen Mikkelsen, MD, DENMARK Adam Witten, MD, DENMARK Birgitte Hougs Kjær, PT, PhD, DENMARK Per Hölmich, DMSc, Prof., DENMARK Kristoffer W. Barfod, MD, PhD, Prof., DENMARK
Return To Sport After Surgical Management Of Posterior Shoulder Instability: A Systematic Review And Meta-Analysis ePoster Presentation Kyle Gouveia, MD, CANADA Jeffrey Kay, MD, CANADA Muzammil Memon, MD, CANADA Nicole Simunovic, MSc, CANADA Asheesh Bedi, MD, UNITED STATES Olufemi R. Ayeni, MD, PhD, MSc, FRCSC, CANADA
Best Way To Correct Reverse Shoulder Arthroplasty Angle In E1 And E3 Favard’S Glenoids. ePoster Presentation Michele Paciotti, MD, ITALY Edoardo Franceschetti, MD, ITALY Angelo Baldari, MD, ITALY Edoardo Giovannetti De Sanctis, MD, FRANCE Alessio Palumbo, MD, ITALY Francesco Franceschi, MD, Prof, ITALY
A 3-Dimensional Classification of Degenerative Arthritis of the Shoulder based on Humeroscapular Alignment ePoster Presentation Benjamin Daniel Kleim, MBBS, MD, MRes, GERMANY Maximilian Hinz, MD, GERMANY Stephanie Geyer, MD, GERMANY Sebastian Lappen, MD, GERMANY Bastian Scheiderer, MD, GERMANY Andreas B. Imhoff, MD, Prof. Emeritus, GERMANY Sebastian Siebenlist, MD, MHBA, Prof., GERMANY
What Is The Ideal Position Of The Shoulder For Graft Fixation In Arthroscopic Superior Capsular Reconstruction? A Computational Analysis. Abstract Presentation 5 minutes Madalena João Antunes, MEng, PORTUGAL Carlos Quental, PhD, Prof., PORTUGAL João Folgado, PhD, Prof., PORTUGAL Clara Azevedo, MD, PhD, PORTUGAL Ana Catarina Ângelo, MD, PORTUGAL
Relation Between Sleep Position And Rotator Cuff Tears Abstract Presentation 5 minutes David P Richards, MD, FRCSC, UNITED STATES Daniel Miller, MD, CANADA David MacDonald, BSc.P.T., MBA, CANADA Stephen D Miller, MD, FRCSC, CANADA Quinn F. Stewart, BSc, CANADA
Treatment of Massive Irreparable Rotator Cuff Tears without Arthritis: A Comparison of Superior Capsular Reconstruction, Partial Rotator Cuff Repair, and Reverse Total Shoulder Arthroplasty Abstract Presentation 6 minutes Travis Frantz, MD, UNITED STATES Marisa Ulrich, BS, UNITED STATES Joshua Scott Everhart, MD, MPH, UNITED STATES Andrew Mundy, MD, UNITED STATES Jonathan D Barlow, MD Grant L. Jones, MD, UNITED STATES Gregory L. Cvetanovich, MD, UNITED STATES Julie Bishop, MD, UNITED STATES
The Risk of Iatrogenic Radial Nerve and/or Profunda Brachii Artery Injury in Humeral Plating using a 4.5 mm Narrow DCP: A Cadaveric Study Abstract Presentation 5 minutes Chaiwat Chuaychoosakoon, MD, THAILAND Supatat Chirattikalwong, MD, THAILAND Watit Wuttimanop, MD, THAILAND Tanarat Boonriong, Principal, THAILAND Wachiraphan Parinyakhup, MD, THAILAND Sitthiphong Suwannaphisit, MD, THAILAND
Open Subpectoral Biceps Tenodesis Versus Arthroscopic Repair For Slap Tears In Patients Under 30 Abstract Presentation 4 minutes Eoghan T. Hurley, MB, BCh, MCh, IRELAND Christopher Angelo Colasanti, MD, UNITED STATES Nathan A Lorentz, BS , UNITED STATES Kirk Anthony Campbell, MD, UNITED STATES Laith M. Jazrawi, MD, UNITED STATES Eric Jason Strauss, MD Bogdan Matache, MD, CANADA Michael J Alaia, MD, UNITED STATES
Classic Vs Congruent-Arc Latarjet Procedure In Athletes With Recurrent Glenohumeral Instability And A Significant Glenoid Bone Loss Abstract Presentation 4 minutes Luciano Rossi, PhD, ARGENTINA Ignacio Tanoira, MD PhD, ARGENTINA Tomás David Gorodischer, MD, ARGENTINA Maximiliano Ranalletta, MD, ARGENTINA
Glenosphere Lateralization In Reverse Shoulder Arthroplasty Leads To Better Functional And Clinical Outcomes In Rotator Cuff Arthropaty Patients - A Systematic Review With Meta-Analysis. Abstract Presentation 3 minutes Joni L. Soares Nunes, MD, PORTUGAL Renato Andrade, PhD student, PORTUGAL Guilherme França, MD, PORTUGAL João Espregueira-Mendes, MD, PhD, Full Prof., PORTUGAL Nuno Sevivas, MD, PhD, PORTUGAL
Scapular Kinematics And Pattern Of Scapular Dyskinesis In Rotator Cuff Tears. A Prospective Cohort Study ePoster Presentation Umile Giuseppe Longo, MD, MSc, PhD, Prof., ITALY Laura Risi Ambrogioni, MD, ITALY Vincenzo Candela, ITALY Alessandra Berton, MD, ITALY Giuseppe Salvatore, MD, PhD, ITALY Vincenzo Denaro, MD, PhD, Prof., ITALY
Return To Play After Arthroscopic Management Of Rotator Cuff Tears In Professional Contact Athletes Abstract Presentation 4 minutes Gautam Yagnik, MD, UNITED STATES Luis A Vargas, MD, PhD, UNITED STATES John W. Uribe, MD, UNITED STATES John E. Zvijac, MD, UNITED STATES Jacob Seiler, MD, UNITED STATES
Superior Capsule Reconstruction Does Partially Restore Glenohumeral Stability In Massive Posterosuperior Rotator Cuff Deficiency - A Dynamic Robotic Shoulder Model Abstract Presentation 4 minutes Lucca Lacheta, MD, GERMANY Alex Brady, MSc, UNITED STATES Samuel I Rosenberg, MD, UNITED STATES Travis Dekker, MD, UNITED STATES Ritesh Kashyap, MD, UNITED STATES Grant J Dornan, MS, UNITED STATES Matthew T. Provencher, MD, UNITED STATES Peter J. Millett, MD, MSc, UNITED STATES
Diagnostic Value Of Various Measurement Methods For Hill-Sachs Lesions ePoster Presentation Mirco Sgroi, MD, GERMANY Hashuka Huzurudin, MD, GERMANY Marius Ludwig, MD, GERMANY Michael Fuchs, Dr., GERMANY Heiko Reichel, Prof., GERMANY Thomas Kappe, MD, Prof., GERMANY
Does The Position During Postoperative Physiotherapy Affect Outcome Of Arthroscopic Treatment Of Acromioclavicular Dislocation; A Prospective Comparative Study ePoster Presentation Tarek M. T. Ghandour, MD, EGYPT
Biomechanical Comparison Of Stemless Humeral Components In Total Shoulder Arthroplasty Abstract Presentation 5 minutes Raymond Chen, MD, UNITED STATES Emma Knapp, BS, UNITED STATES Anthony Miniaci, MD, FRCSC, UNITED STATES Hani Awad, PhD, UNITED STATES Ilya Voloshin, MD, UNITED STATES
Magnetic Resonance Imaging Classification For The Assessment Of Tendon Integrity Of The Rotator Cuff After Repair. A Reliability Study ePoster Presentation Alessandra Scaini, MD, ITALY Maristella Francesca Saccomanno, MD, PhD, ITALY Marcello Motta, MD, ITALY Alessandro Colosio, MD, ITALY Marco Adriani, MD, ITALY Giuseppe Bertoni, MD, ITALY Niccolo Vaisitti, MD, ITALY Giuseppe Frizziero, MD, ITALY Alberto Maurizio, MD, ITALY Mac Donald Tedah Djemetio, MD, ITALY Emanuele Maggini, MD, ITALY Giuseppe Milano, Prof., ITALY
Platelet-Rich Plasma Injection Reduces Tear Size In Partial Supraspinatus Tendon Tears Compared To Conventional Steroid Injection Abstract Presentation 5 minutes Thanathep Tanpowpong, MD, THAILAND Marvin Thepsoparn, MD, THAILAND Somsak Kuptniratsaikul, MD, THAILAND Thun Itthipanichpong, MD, THAILAND Danaithep Limskul, MD, THAILAND Achitpol Thongkam, THAILAND Numphung Numkarunarunrote, MD, THAILAND Chindarat Ratanakornphan, MD, THAILAND Aticha Ariyachaipanich, MD, THAILAND Timporn Vitoonpong, MD, THAILAND Phark Thanphraisan, MD, THAILAND
Lateralized Glenosphere Reverse Shoulder Arthroplasty: Inlay And Onlay Designs Have Similar Clinical Outcomes In Patients With Glenohumeral Osteoarthritis ePoster Presentation Prashant Meshram, MBBS, MS, DNB (Ortho), UNITED ARAB EMIRATES Stephen C. Weber, MD, UNITED STATES Uma Srikumaran, MD, MBA, MPH, UNITED STATES Edward G McFarland, MD, FAAOS, UNITED STATES
Health Literacy in Rotator Cuff Repair: A Quantitative Assessment of the Understandability And Readability of Online Patient Education Material ePoster Presentation Olivia O'Reilly, MD, UNITED STATES Mary Kate Skalitzky, BA, UNITED STATES Alan Shamrock, MD, UNITED STATES Burke Gao, MD, UNITED STATES Kyle Kesler, MD, UNITED STATES Trevor Gulbrandsen, MD, UNITED STATES Brendan Patterson, MD, UNITED STATES
The Early And Encouraging Results Of Suture Tape For Glenoid Labral Repair In Shoulder Stabilisation ePoster Presentation John Ranson, MBChB, BSc (Hons), MRCSEd, UNITED KINGDOM Lee Hoggett, MBChB, MRCS, UNITED KINGDOM Neil Jain, BM, MRCS(Ed), FRCS(Tr&Orth), UNITED KINGDOM
Predicting Factors For Achieving Minimally Clinical Important Difference After Primary Shoulder Arthroplasty: A Machine Learning Model Abstract Presentation 4 minutes Ayoosh Pareek, MD, UNITED STATES Micah Nieboer, MD, UNITED STATES Jianing Man, PhD, UNITED STATES Ronda Esper, BS, UNITED STATES Kalyan Pasupathy, PhD, UNITED STATES Joaquin Sanchez-Sotelo, MD, UNITED STATES
Upper Limb Lengthening in Achondroplasia Using Unilateral External Fixation ePoster Presentation Antonio Arenas-Miquelez, MD, FEBOT, AUSTRALIA Lucas Arbeloa-Gutierrez, MD, SPAIN Blanca Vazquez, MD, SPAIN Julio De Pablos, Prof. MD, PhD., SPAIN
Benefits Of The Recenter: An Arthroscopic Bankart Repair Augmentation For Recurrent Anterior Shoulder Instability With Minimum 2-Year Follow-Up ePoster Presentation Kevin Picard, MD, FRANCE Jean-David Raphael Werthel, MD, PhD, Prof, FRANCE Thomas Bauer, MD, PhD, FRANCE Alexandre Hardy, MD, PhD, FRANCE
Reliability Of A Three-Dimensional Evaluation Of Bipolar Bone Defects In Anterior Gleno-Humeral Instability ePoster Presentation Giuseppe Bertoni, MD, ITALY Maristella Francesca Saccomanno, MD, PhD, ITALY Alessandra Scaini, MD, ITALY Jacopo Maffeis, MD, ITALY Alessandro Colosio, MD, ITALY Marco Adriani, MD, ITALY Marcello Motta, MD, ITALY Niccolo Vaisitti, MD, ITALY Giuseppe Frizziero, MD, ITALY Alberto Maurizio, MD, ITALY Giuseppe Milano, Prof., ITALY
Establishing Minimal Clinically Important Difference In The Shoulder Activity Level Rating Scale After Shoulder Surgery ePoster Presentation Darby Adele Houck, BA, UNITED STATES Ian L Verbeck, MS, UNITED STATES Eric C. McCarty, MD, UNITED STATES Rachel M. Frank, MD, UNITED STATES Michelle Wolcott, MD, UNITED STATES Adam Seidl, MD, UNITED STATES Jonathan T. Bravman, MD, UNITED STATES
Clinical Outcomes Of Rotator Cuff Anterior Cable Reconstruction With Long Head Of Biceps Tendon Autograft ePoster Presentation Raymond Chen, MD, UNITED STATES Ilya Voloshin, MD, UNITED STATES
Revisiting Percutaneous Fixation for Proximal Humerus Fractures ePoster Presentation Megan Diack, MBCHB, MRCSI, MCh, IRELAND Muhammad Nouman Baig, MBBS, ChM T&O, FEBOT, IRELAND Orla Hennessy, MB BaO BCh, MCh, IRELAND Ben Murphy, MB BCh BAO, MCh, MRCS, IRELAND Kenneth Kaar, FRCS (Tr and Ortho), IRELAND
Is Surgical Treatment An Advantage When Treating Acute AC Joint Dislocation Type III And V? A Prospective Randomized Clinical Trial Abstract Presentation 5 minutes Helena Boström Windhamre, MD, SWEDEN Johan Von Heideken, MD, PhD, SWEDEN Viveka Une-Larsson, PT, SWEDEN Wilhelmina Ekström, MD, Associate Professor, SWEDEN Anders Ekelund, SWEDEN
Primary Interposition Dermal Allograft Cuff Reconstruction Is Superior To Revision After Failed Cuff Repair: A Clinical and Radiographic Analysis Abstract Presentation 4 minutes Ivan Wong, MD, FRCSC, MACM, Dip. Sports Med, CANADA Nedal Alkhatib, MD, CANADA Sara Sparavalo, B.Sc., M.A.Sc., CANADA Jie Ma, CANADA
Effectiveness Of In-Office Ultrasound For The Management Of Suspected Rotator Cuff And Biceps Pathology: An Institutional Evaluation of Surgeons With No Formal Training ePoster Presentation Jarret M. Woodmass, MD, FRCSC, CANADA Sheila McRae, PhD, MSc, CANADA Jamie Dubberley, MD, CANADA Jonathon Marsh, MD, CANADA Jason A. Old, MD, FRCSC, CANADA Gregory Adam Stranges, MD, CANADA Shahbaz S Malik, BSc, MB BCh, MSc (Orth Engin), LLM, FRCS (Tr&Orth), UNITED KINGDOM Jeff Leiter, PhD, CANADA Peter B. MacDonald, MD, FRCS, Dip Sport Med, CANADA
Latarjet After Failed Bankart Repair ePoster Presentation Benjamin Marjanovic, MD, SLOVENIA Marko Nabergoj, MD, SLOVENIA
Limited Utility Of Plain Radiographs For Non-Traumatic Shoulder Pain In Patients Under 50 And Implications For Telemedicine In Orthopaedics ePoster Presentation Alexandria Lichtl, BA, UNITED STATES Amelia Fitterer, BA, UNITED STATES Patrick Horve, BS, UNITED STATES Christopher S. Lee, MD, MBA, UNITED STATES
Adipose MSC in Arthroscopic Rotator Cuff Repair. A Prospective Randomized Controlled Trial With Two Years Follow-Up. Abstract Presentation 5 minutes Pietro S. Randelli, MD, Prof., ITALY Davide Cucchi, MD, GERMANY Elisabetta Nocerino, MD, ITALY Linda Boerci, MD, ITALY Chiara Fossati, MD, ITALY Alessandra Menon, MD, ITALY
Outcomes Of Arthroscopic Shoulder Stabilization At The United States Naval Academy: 5-Year Follow-Up ePoster Presentation Bobby Yow, MD, UNITED STATES Sean Wade, MD, UNITED STATES Benjamin Hoyt, MD, UNITED STATES Michael Bedrin, MD, UNITED STATES Jon F. Dickens, MD, UNITED STATES John-Paul Rue, MD, UNITED STATES Lance LeClere, MD, UNITED STATES
Proximal And Mid-Thigh Fascia Lata Graft Constructs Used For Arthroscopic Superior Capsular Reconstruction Show Equivalent Biomechanical Properties. An In Vitro Human Cadaver Study Abstract Presentation 5 minutes Clara Azevedo, MD, PhD, PORTUGAL Ana Catarina Ângelo, MD, PORTUGAL Carlos Quental, PhD, Prof., PORTUGAL Sérgio Gonçalves, MsC, PORTUGAL João Folgado, PhD, Prof., PORTUGAL Nuno Vieira Ferreira, MD, PORTUGAL Nuno Sevivas, MD, PhD, PORTUGAL
Traumatic Rotator Cuff Tears Have Greater Improvements In Functional Outcomes Than Non-Traumatic Tears ePoster Presentation Brian M Godshaw, MD, UNITED STATES Jonathan D Hughes, MD, PhD, UNITED STATES Stephanie Boden, MD, UNITED STATES Bryson P. Lesniak, MD, UNITED STATES Albert Lin, MD, UNITED STATES
Advanced 3-Dimensional Analysis Of The Interplay Between Hill-Sachs Lesions And Glenoid Bone Loss Abstract Presentation 5 minutes Matthew T. Provencher, MD, UNITED STATES Liam A. Peebles, BA, UNITED STATES Petar Golijanin, MD, MBA, UNITED STATES Annalise Peebles, BA , UNITED STATES Justin W. Arner, MD, UNITED STATES
Can Metal Artifact Reduction Sequence Magnetic Resonance Imaging (Mars-Mri) Help In The Diagnosis Of Periprosthetic Shoulder Infection? A Prospective Trial Abstract Presentation 5 minutes Stephen C. Weber, MD, UNITED STATES Prashant Meshram, MBBS, MS, DNB (Ortho), UNITED ARAB EMIRATES Edward G McFarland, MD, FAAOS, UNITED STATES Uma Srikumaran, MD, MBA, MPH, UNITED STATES Jacob Joseph, BS, UNITED STATES Jan Fritz, MD, UNITED STATES
Reverse shoulder arthroplasty humeral and glenoid variations influence on range of motion: a standardized computer model study Abstract Presentation 5 minutes Antonio Arenas-Miquelez, MD, FEBOT, AUSTRALIA Richard James Murphy, MBChB MA MRCS DPhil FRCS(Orth), UNITED KINGDOM Andrea Rosa, PhD, SWITZERLAND Davide Caironi, ., ITALY Matthias A. Zumstein, Prof., SWITZERLAND
Low Possibility Of Developing Degenerative Changes After Arthroscopic Remplissage Augmenting The Classic Bankart Repair. Radiological Results After 10 Years Follow Up Abstract Presentation 5 minutes Prodromos Natsaridis, MD, MSc, GREECE Emmanouil V. Brilakis, MD, MSc, PhD, GREECE Stefania Kokkineli, MD, GREECE Emmanuel M. Antonogiannakis, MD, GREECE
Training With Lighter Baseballs Increases Velocity Without Increasing Injury Risk ePoster Presentation Brandon Erickson, MD, UNITED STATES Thomas Atlee, BS, UNITED STATES Peter Chalmers, MD, UNITED STATES Rocco Bassora, UNITED STATES V. Christopher Inzerillo, MD, MBA, UNITED STATES Andrew Beharrie, UNITED STATES Anthony A. Romeo, MD, UNITED STATES
High Correlation Between Inner And Outer Glenoid Circle Diameters And Its Clinical Relevance. Comparison Of The Itoi And Sugaya Circles In Glenoid Bone Loss ePoster Presentation Antonio Arenas-Miquelez, MD, FEBOT, AUSTRALIA Orestis Karargyris, MD, GREECE Petra Graham, PhD, AUSTRALIA Ralph Hertel, Prof., SWITZERLAND
Outcomes Of Arthroscopic Latarjet As A Revision Procedure For Treatment Of Recurrent Anterior Shoulder Instability After Failed Arthroscopic Bankart Repair. A Case Series ePoster Presentation Lika Dzidzishvili, MD, PhD, SPAIN Claudio Calvo Palma, MD, PhD, CHILE María Valencia Mora, MD, PhD, SPAIN Antonio Foruria, MD, PhD, SPAIN Emilio Calvo, MD, PhD, MBA, SPAIN
Latarjet Vs Coracoid Free Graft For The Treatment Of Glenohumeral Anterior Instability In Patients Older Than 40 Years ePoster Presentation Peter Domos, MD, FRCS(Tr&Orth), UNITED KINGDOM Mikaël Chelli, MD, FRANCE Gilles Walch, MD, FRANCE
Is Interposition Allograft Bridging Reconstruction Appropriate in Patients Older Than 60 Years Old? A Retrospective Mid-Term Analysis ePoster Presentation Ivan Wong, MD, FRCSC, MACM, Dip. Sports Med, CANADA Sara Sparavalo, B.Sc., M.A.Sc., CANADA Jie Ma, CANADA
Blood Glucose Levels In Diabetic Patients Following Intra-Articular Corticosteroid Injection Of The Shoulder: A Pilot Study Abstract Presentation 5 minutes Andres Barandiaran, MS, UNITED STATES Rachel M. Frank, MD, UNITED STATES Eric C. McCarty, MD, UNITED STATES Jonathan T. Bravman, MD, UNITED STATES Adam Seidl, MD, UNITED STATES
Arthroscopic Bankart Repair For Adolescent Anterior Shoulder Instability: Clinical And Radiographic Predictors Of Revision Surgery And Subjective Instability Abstract Presentation 5 minutes Crystal A. Perkins, MD, UNITED STATES Anthony Egger, MD, UNITED STATES Michael T. Busch, MD, UNITED STATES Sam Broida, BS, UNITED STATES Cliff Willimon, MD, UNITED STATES
Outcome Of Arthroscopic Suspensory Fixation Systems In Acromioclavicular Joint Injuries ePoster Presentation Mohamed Ibrahim, MD, EGYPT Ibrahim Mohsen, MD, PhD, EGYPT Mohamed Safaa Eldeen Arafa, MD, EGYPT Haytham Abdel Aty, MD, PhD, EGYPT Kamal Abdel Meguid, MD, PhD, Prof., EGYPT Alexandre Lädermann, MD, SWITZERLAND
The factors influencing postoperative cuff integrity of arthroscopic rotator cuff repair combined with muscle advancement for massive rotator cuff tear Abstract Presentation 5 minutes Yasuhiko Sumimoto, MD, JAPAN Shin Yokoya, MD, PhD, JAPAN Yohei Harada, MD, PhD, JAPAN Nobuo Adachi, MD, PhD, JAPAN
Epidemiology, Treatment Concepts And Complications After Periprosthetic Humeral Fractures - A Multicenter Data Analysis ePoster Presentation Sandra Boesmueller, MD, PhD, AUSTRIA Greta Lorenz, MD, AUSTRIA Daniel Schallmayer, MD, AUSTRIA Oliver Holub, MD, AUSTRIA Rudolf Maximilian Kinsky, MD, AUSTRIA Christian Fialka, AUSTRIA Rainer Mittermayr, MD, MBA, AUSTRIA
Arthroscopic Bankart Repair Versus Open Latarjet Procedure For Recurrent Shoulder Dislocation: Which Is Better in Limited Resource Setting? ePoster Presentation Saroj Rai, MD, PhD, UNITED ARAB EMIRATES Binod Sherchan, MS, NEPAL
Arthroscopic Repair Of U Shaped Rotator Cuff Tear: Modified Margin Convergence With A Single Triple Loaded Suture Anchor ePoster Presentation Siddharth Jain, M.S. ORTHOPEDICS, INDIA
Performance-Based Outcomes After Shoulder Arthroscopy in Professional Athletes Among Different Sports ePoster Presentation Margaret J Higgins, BS, UNITED STATES Steven DeFroda, MD, UNITED STATES Daniel S. Yang, BS, UNITED STATES Symone M Brown, MPH, UNITED STATES Mary K. Mulcahey, MD, UNITED STATES
Outpatient Vs. Inpatient Anatomic Total Shoulder Arthroplasty: Outcomes And Complications ePoster Presentation Brandon Erickson, MD, UNITED STATES Yousef Shishani, MD, UNITED STATES Stacy Jones, UNITED STATES Meghan E. Bishop, MD, UNITED STATES Anthony A. Romeo, MD, UNITED STATES Reuben Gobezie, MD, UNITED STATES
Graft Augmented Osteosynthesis Of Proximal Humerus Fracture In Osteoporotic Fractures ePoster Presentation Dr.Neelanagowda V P Patil, MBBS , MS , INDIA Arun Gr, MBBS,MS,FASM, INDIA Ravi G R, MBBS,MS orthopaedics , INDIA Manohar Rao H R, MS ORTHOPAEDICS, INDIA
Does The Posterior Glenoid Osteotomy Reduce The Rate Of Recurrence Inpatients With Posterior Shoulder Instability – A Systematic Review. ePoster Presentation Shahbaz S Malik, BSc, MB BCh, MSc (Orth Engin), LLM, FRCS (Tr&Orth), UNITED KINGDOM Muaaz Tahir, BSc, MBBS, FRCS, UNITED KINGDOM Robert Jordan, MB BS, MSc, FRCS (Tr&Orth), UNITED KINGDOM Peter B. MacDonald, MD, FRCS, Dip Sport Med, CANADA
Effectiveness Of Latarjet For Anterior Shoulder Instability In Patients With Seizure Disorder ePoster Presentation Stephen G Thon, MD, UNITED STATES Katherine Branche, MD, UNITED STATES Darby Adele Houck, BA, UNITED STATES Eric C. McCarty, MD, UNITED STATES Adam Seidl, MD, UNITED STATES Armando F. Vidal, MD, UNITED STATES Michelle Wolcott, MD, UNITED STATES Rachel M. Frank, MD, UNITED STATES Jonathan T. Bravman, MD, UNITED STATES
Surgical Technique And Prosthesis Geometry Affect In Vivo Kinematics, Strength, And Contact Path After Reverse Shoulder Arthroplasty Abstract Presentation 5 minutes Clarissa Levasseur, MS, UNITED STATES Ajinkya Rai, BS, UNITED STATES Gillian Kane, BS, UNITED STATES Alexandra Santina Gabrielli, MD, UNITED STATES Jonathan D Hughes, MD, PhD, UNITED STATES William Anderst, PhD, UNITED STATES Albert Lin, MD, UNITED STATES
Risk Factors for Retears Following repairs of Massive Rotator Cuff Tears With Or Without Involvement Of Subscapularis ePoster Presentation Silvampatti Ramasamy Sundararajan, MS(Orth), INDIA Rajagopalakrishnan Ramakanth, D.ortho, DNB(ortho), D.SICOT, INDIA Terence Dsouza, MS, DNB, FNB, INDIA S Rajasekaran, MS(Orth),DOrth,DNB,FRCS(Ed),FRCS(Lon),MCh(Liv),PhD, INDIA
Pseudoparalysis And Subscapularis Insufficiency Are Not Contraindications For Superior Capsular Reconstruction ePoster Presentation Travis Frantz, MD, UNITED STATES Marisa Ulrich, BS, UNITED STATES Joshua Scott Everhart, MD, MPH, UNITED STATES Andrew Mundy, MD, UNITED STATES Jonathan D Barlow, MD Grant L. Jones, MD, UNITED STATES Julie Bishop, MD, UNITED STATES Gregory L. Cvetanovich, MD, UNITED STATES
Smokers Benefit From Rotator Cuff Repair ePoster Presentation Kirsten Lundgreen, MD, PhD, NORWAY Christian Owesen, MD, PhD, NORWAY Sigbjorn Dimmen, Prof., MD, PhD, NORWAY Kjersti Kaul Jenssen, MD, PhD, NORWAY
Inlay Total Shoulder Arthroplasty For Primary Glenohumeral Arthritis Abstract Presentation 5 minutes John W. Uribe, MD, UNITED STATES John E. Zvijac, MD, UNITED STATES Luis A Vargas, MD, PhD, UNITED STATES David A. Porter, MD, UNITED STATES Anshul Saxena, BDS, PhD, UNITED STATES Matthias Schurhoff, MD, UNITED STATES Andrew Payomo, MD student, UNITED STATES
Midterm Results Of Two-Stage Revision Surgery For Periprosthetic Shoulder Infection ePoster Presentation Stephen C. Weber, MD, UNITED STATES Prashant Meshram, MBBS, MS, DNB (Ortho), UNITED ARAB EMIRATES Edward G McFarland, MD, FAAOS, UNITED STATES Jorge Rojas Llevano, MD, COLOMBIA Jacob Joseph, BS, UNITED STATES Uma Srikumaran, MD, MBA, MPH, UNITED STATES
Characterization Of Hill-Sachs Lesions Based On Location, Orientation, And Volume: A 3-Dimensional Modeling Study Of 100 Anterior Shoulder Instability Patients Abstract Presentation 5 minutes Justin W. Arner, MD, UNITED STATES Petar Golijanin, MD, MBA, UNITED STATES Liam A. Peebles, BA, UNITED STATES Brenton Douglass, MD, UNITED STATES Matthew T. Provencher, MD, UNITED STATES
A Study For Monitoring Scapular Movements By Using Polymer-Encapsulated Strain Sensors Based On Conductive Textile ePoster Presentation Umile Giuseppe Longo, MD, MSc, PhD, Prof., ITALY Arianna Carnevale, Eng, ITALY Emiliano Schena, Eng, ITALY Carlo Massaroni , Eng, ITALY Vincenzo Candela, ITALY Alessandra Berton, MD, ITALY Giuseppe Salvatore, MD, PhD, ITALY Vincenzo Denaro, MD, PhD, Prof., ITALY

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Does the Walch Type B Shoulder have a Transverse Force Couple Imbalance? - A Volumetric Analysis of Segmented Rotator Cuff Muscles in Osteoarthritic Shoulders.

Does the Walch Type B Shoulder have a Transverse Force Couple Imbalance? - A Volumetric Analysis of Segmented Rotator Cuff Muscles in Osteoarthritic Shoulders.

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Does the Walch Type B Shoulder have a Transverse Force Couple Imbalance? - A Volumetric Analysis of Segmented Rotator Cuff Muscles in Osteoarthritic Shoulders.

Does the Walch Type B Shoulder have a Transverse Force Couple Imbalance? - A Volumetric Analysis of Segmented Rotator Cuff Muscles in Osteoarthritic Shoulders.

Background

Methods

Results

Conclusion