In young active patients who have suffered a rupture of the anterior cruciate ligament (ACL), ACL reconstruction is the cornerstone of treatment. Current techniques are designed to reconstruct the ACL in an anatomic position. Non anatomic placement of the ACL graft leads to increased risk of failure of the graft. Failure of reconstruction occurs in 0-14% of primary ACL reconstructions. In up to 54% of cases, technical failure is an additive cause for failure. In 80% of technical failures, malposition of the femoral tunnel is the issue. Current surgical techniques with universal guides leading the direction for tunnels seem to come short in providing a constant and reliable result for creating a femoral tunnel at the individual anatomic origin of the ACL. The need for a patient specific drill guide for femoral tunnel placement seems apparent.

Purpose

To determine the in vitro accuracy of a patient specific 3D printed surgical guide, to be used for femoral tunnel positioning in ACL reconstruction.

Methods

A patient specific guide for femoral tunnel positioning in ACL reconstruction was created for 4 human cadaveric knee specimens based on both routine clinical MRI and 3D MRI. Molds were created in 100%, 1mm larger and 1 mm smaller than the original. Printing accuracy was assessed. Fitting properties were judged by two orthopaedic surgeons. MRI scanning was performed both pre- and post-procedure. The planned trajectory was compared to the actual drilled trajectory.

Results

High printing accuracy was achieved with a deviation of 0.1-0.3 mm (SD 0.12-0.14mm). Molds based on routine clinical MRI with an enlargement of +1mm were judged to fit best. The patient specific 3D printed guide proved to be very accurate with a deviation of 1.5 mm from the intended tunnel location.

Conclusions

Usage of a patient specific 3D printed surgical guide for femoral tunnel placement in ACL reconstruction seems promising. Using this novel instrument, femoral tunnel placement in ACL reconstruction may become more accurate and consistent, especially in low volume surgeons.

ACL SPONTANEUS REPAIR. CASES SERIES ePoster Presentation Jose Luis Aparicio, MD, ARGENTINA Lisandro Nardin, MD, ARGENTINA Matías Sebastián Savá, MD, ARGENTINA Oscar J. Calvet, MD, ARGENTINA Hernan Giuria, MD, ARGENTINA Fernando Emilio Mercier, Médico. Especialista en ortopedia y traumatologia., ARGENTINA Franco Francescutti, Md, ARGENTINA
Relationship Between Body Mass Index And Mid- To Long-Term Patient Outcomes After Multi-Ligamentous Knee Injury Abstract Presentation 5 minutes Robert A. Duerr, MD, UNITED STATES Danny Tan, BS, UNITED STATES Robert A Magnussen, MD, MPH, UNITED STATES Alex C. Dibartola, MD, MPH, UNITED STATES Christopher C. Kaeding, MD, UNITED STATES David C. Flanigan, MD, UNITED STATES
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Choice Of Distalising Tibial Tubercle Osteotomy Does Not Significantly Affect Risk Of Tibial Shaft Fracture At Time Zero: A Composite Saw Bone And Finite Element Analysis (FEA) Study Abstract Presentation 5 minutes Alexander S. Nicholls, MSc, FRACS, AUSTRALIA Samuel Grasso, PhD, B. Engineering (Mechanical), AUSTRALIA Tegan Cheng, PhD, BE(Biomed)/BMedSc, MIEAust, AUSTRALIA Myles R. J. Coolican, FRACS, AUSTRALIA David Little, FRACS PhD, AUSTRALIA
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The Gastrocnemius Flap In The Salvage Revision Knee Arthroplasty ePoster Presentation Robert Mcculloch, MBChB MSc FRCS (Tr&Orth), UNITED KINGDOM Amirul Adlan, MBChB, UNITED KINGDOM Scott Evans, MBChB FRCS (Tr&Orth), UNITED KINGDOM Michael Parry, FRCS, UNITED KINGDOM Jonathan Daniel Stevenson, FRCS (Tr&Orth), UNITED KINGDOM Lee Jeys, FRCS, UNITED KINGDOM
Passive rotational tibiofemoral stability in patients undergoing pcl reconstruction – a prospective analysis of in vivo kinematics ePoster Presentation Stephan Oehme, MD, GERMANY Philippe Moewis, PhD, GERMANY Heide Boeth, MSc, Dipl Ing, GERMANY Benjamin Bartek, MD, GERMANY Georg Duda, PhD, GERMANY Tobias M. Jung, MD, GERMANY
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ACL Repair Versus ACL Reconstruction in Chronic Lesions ePoster Presentation Gian Luigi Canata, MD, ITALY Valentina Casale, MD, ITALY
Preemptive Duloxetine Improved Postoperative Pain Relief And Wound Healing In Centrally Sensitized Patients Underwent Total Knee Arthroplasty: Double Blinded Randomized Controlled Trial ePoster Presentation Yong Gyu Sung, MD, KOREA, REPUBLIC OF Man-Soo Kim, MD, PhD, KOREA, REPUBLIC OF Dong-Chul Park, MD, KOREA, REPUBLIC OF Jae Jung Kim, MD, KOREA, REPUBLIC OF Yong In, MD, PhD, KOREA, REPUBLIC OF
ACL Graft Preparation with Vancomycin Has No Effect on Patient Reported Outcomes and Graft Rupture Rates Following Primary ACL Reconstruction ePoster Presentation Alan Shamrock, MD, UNITED STATES Molly A Day, MD, UNITED STATES Trevor Gulbrandsen, MD, UNITED STATES Kyle R. Duchman, MD, UNITED STATES Robert W. Westermann, MD, UNITED STATES Matthew J. Bollier, MD, UNITED STATES Brian Wolf, MD, UNITED STATES
Athletes Cope Better Than Non-Athletes Before Knee Cartialge Surgery; A Prospective Cohort Study ePoster Presentation David C. Flanigan, MD, UNITED STATES Joshua Scott Everhart, MD, MPH, UNITED STATES Alex C. Dibartola, MD, MPH, UNITED STATES Eric Milliron, BS, UNITED STATES Laura C. Schmitt, PT, PhD, UNITED STATES Robert A Magnussen, MD, MPH, UNITED STATES Charles Emery, PhD, UNITED STATES
Typical Pain Patterns in Patients After Total Knee Arthroplasty Abstract Presentation 6 minutes Dominic Thierry Mathis, MD, SWITZERLAND Samuel Tschudi, Mr., SWITZERLAND Antonia Hauser, MD, SWITZERLAND Amsler Felix, Mr., SWITZERLAND Helmut Rasch, MD, SWITZERLAND Michael T. Hirschmann, MD, Prof., SWITZERLAND
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Mind the anterior root of the lateral meniscus. A biomechancial perspective. ePoster Presentation Alejandro Espejo-Reina, MD, MSc, SPAIN María Prado-Novoa, MEng, PhD, SPAIN Ana Pérez-Blanca, PhD, SPAIN Belén Estebánez, MEng, SPAIN Álvaro Raya-Herrero, MEng, SPAIN María Josea Espejo-Reina, MD, SPAIN Alejandro Espejo-Baena, MD, SPAIN
Bone Edema On Medial Tibial Plateau Is Associated With Rotatory Instability In Anterior Cruciate Ligament-Deficient Knees ePoster Presentation Piero Agostinone, MD, ITALY Stefano Di Paolo, Eng, PhD, ITALY Alberto Grassi, PhD, ITALY Gian Andrea Lucidi, MD, ITALY Giacomo Dal Fabbro, MD, AUSTRALIA Stefano Zaffagnini, MD, Prof., ITALY
A Stronger Psychological Profile Can Differentiate Patients Who Suffer An Acl Re-Rupture From Patients Who Do Not: A Matched Cohort Study ePoster Presentation Ramana Piussi, PhD, SWEDEN Susanne Beischer, PhD, SWEDEN Roland Thomee, Professor, SWEDEN Christoffer Thomee, RPT, SWEDEN Mikael Sansone, MD, PhD, SWEDEN Kristian Samuelsson, Prof, MD, PhD, MSc, SWEDEN Eric Hamrin Senorski, PT, PhD, Assoc. Prof., SWEDEN
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Hypermobile Lateral Meniscus Fixation Is A Successful Treatment In Soccer Players. ePoster Presentation Gilbert Steinbacher, MD, SPAIN Manuel Alvarado-Calderon, MD, COSTA RICA Eduard Alentorn-Geli, MD, PhD, MSc, FEBOT, FACGME, SPAIN David Barastegui, MD, SPAIN Pedro Alvarez-Diaz, MD, PhD, Prof., SPAIN Jorge Ramirez Haua, MD, SPAIN Ramon Cugat Bertomeu, MD, PhD, SPAIN
Improved Epiphyseal Socket Placement with Intraoperative 3D Fluoroscopy: Consecutive Series of Pediatric All-Epiphyseal Anterior Cruciate Ligament Reconstruction ePoster Presentation Alexandra Hunter Aitchison, UNITED STATES Frank A. Cordasco, MD, MS, UNITED STATES Daniel W. Green, MD, MS, UNITED STATES
Prognostic Factors for Poor Functional Outcomes in Knee Dislocations Treated by Multi Ligament Reconstructions. ePoster Presentation Valentine Schneebeli, SWITZERLAND Trieu Hoai Nam Ngo, ., SWITZERLAND Robin Martin, MD, SWITZERLAND
A Melt Electrowritten Scaffold Inspired By Native Tissue Architecture Seeded With Meniscus Cells And Mesenchymal Stromal Cells Abstract Presentation 5 minutes Jasmijn Korpershoek, MD, NETHERLANDS Mylène de Ruijter, PhD, NETHERLANDS Bastiaan Terhaard, BSc, NETHERLANDS Chella Hagmeijer, PhD, NETHERLANDS Daniel Saris, MD, PhD, Prof., UNITED STATES Miguel Castilho, PhD, NETHERLANDS Jos Malda, Prof., NETHERLANDS Lucienne A Vonk, PhD, NETHERLANDS
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Unplanned Emergency Visits and Admissions Following Orthopedic Ambulatory Surgery in the First Two Years of Operation of a University Ambulatory Surgery Center ePoster Presentation Timothy Lee Miller, MD, UNITED STATES Chelsea Brown, MD, UNITED STATES Sennay Ghenbot, ENS, MC, UNITED STATES Robert A Magnussen, MD, MPH, UNITED STATES David C. Flanigan, MD, UNITED STATES
Is Arthrometric Testing A Reliable Option For Preoperative Diagnosis Of Ramp Lesions? ePoster Presentation Arcangelo Russo, MD, ITALY Giuseppe Gianluca Costa, MD, ITALY Gianluca Gianluca Zocco, MD, ITALY Angelo Graceffa, MD, ITALY Michele Lauria, MD, ITALY Giuseppe Fanzone, MD, ITALY
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Changes in coronal alignment of the hip joint after Medial Opening High Tibial Osteotomy ePoster Presentation Jaison Patel, BSc, MBBS, FRCS, UNITED KINGDOM Reece Patel, BA, UNITED KINGDOM Joel Melton, BM, MRCS (Ed), MSc (Orth Eng), FRCS, UNITED KINGDOM
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Psychometric Outcomes Of PRP After ACL Reconstruction With Meniscal Repair ePoster Presentation Adam O'brien, MD, UNITED STATES Brian Randall Duncan, PT, DPT, UNITED STATES Ryan J. Warth, MD, UNITED STATES Walter Richard Lowe, MD, UNITED STATES Lane Bailey, PT, PhD, DPT, CSCS, UNITED STATES
Prevalence Of Cartilage Lesions In Patients Undergoing Meniscal Surgery, A Cross-Sectional Study ePoster Presentation Eduardo Gardella, MD, CHILE Marcelo Acevedo, MD, CHILE Rodrigo Hernández-Tagle, MD, CHILE Juan Jose Valderrama, MD, CHILE Agustín León, MD, CHILE Xabier Carredano, MD, CHILE Gunther Redenz, PT, CHILE
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Proximal hamstring rupture: A survey of over 700 patient experiences. ePoster Presentation Rosemary Jane Hackney, BMedSci, BMBS, MRCS(Ed), UNITED KINGDOM Roger G Hackney, FRCS, FRCS(Orth), FFSEM, Dip Sports Med, UNITED KINGDOM
Neutrophil To Lymphocyte Ratio As Predictor Of Periprosthetic Joint Infection In Patients With Secondary Surgery After Total Knee Arthroplasty Abstract Presentation 6 minutes Mary Rose Casas Gonzales, MD, PHILIPPINES Antonio Nicolas Tanchuling Jr., MD, PHILIPPINES Henry Calleja, MD, PHILIPPINES
Degenerative Medial Meniscus Tear With a Displaced Flap Into the Meniscotibial Recess and Tibial Peripheral Reactive Bone Edema Presents Good Results With Arthroscopic Surgical Treatment Abstract Presentation 4 minutes Camilo P. Helito, MD, PhD, Prof, BRAZIL Paulo Helito, MD, BRAZIL Marcel F. Sobrado, MD, PHD, BRAZIL Pedro N. Giglio, MD, BRAZIL Tales Mollica Guimarães, MD, BRAZIL José R. Pécora, Prof., BRAZIL Riccardo Gomes Gobbi, MD, PhD, BRAZIL Marcelo Bordalo-Rodrigues, MD, BRAZIL bruno vande berg, MD, BELGIUM
Patient-Reported Outcome And Surgical Conversion Rate After Treatment With A Physiotherapy-Led Progressive Exercise Program Plus A Support Brace In Patients With An Acute Injury Of The Posterior Cruciate Ligament Abstract Presentation 6 minutes Randi Rasmussen, BPT, DENMARK Julie Jacobsen, Phd, DENMARK Birgitte Blaabjerg, BsC, DENMARK Torsten G. Nielsen, PhD., DENMARK Lene L. Miller, Masters Degree, DENMARK Martin Lind, MD, PhD, Prof., DENMARK
Length Change Patterns Of The Passive Medial Knee Structures In Response To Knee Flexion And Applied Loads Abstract Presentation 7 minutes Lukas Willinger, MD, GERMANY Shun Shinohara, MSc, JAPAN Kiron K. Athwal, PhD, MEng, UNITED KINGDOM Simon Ball, MA, FRCS(Tr&Orth), UNITED KINGDOM Andy Williams, MBBS, FRCS(Orth), FFSEM(UK), UNITED KINGDOM Andrew A. Amis, FREng, DSc, PhD, UNITED KINGDOM
Low Return To Pre-Injury Level Of Sports After Multi-Ligament Knee Injury ePoster Presentation Donna Blokland, MD, NETHERLANDS Bas Van Ooij, MD, NETHERLANDS Mikel L. Reilingh, MD, NETHERLANDS Nienke Wolterbeek, NETHERLANDS Jacco A. C. Zijl, MD, NETHERLANDS
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Human Umbilical Cord-Derived Mesenchymal Stem Cells Associated to Collagen Matrix for Knee Chondral Lesions Repair: Initial Clinical Experience ePoster Presentation Fabiano Kupczik, MD, PhD, MSc, BRAZIL Carmen Lucia Kuniyoshi Rebelatto, PhD, BRAZIL Alexandra Cristina Senegaglia, PhD, BRAZIL Debora Regina Daga, MSc, BRAZIL Daniela Boscaro Marsaro, MSc, BRAZIL Bruna Schaidt, MSc, BRAZIL Isadora May Vaz, MSc, BRAZIL Lidiane Maria Boldrini Leite, MSc, BRAZIL Marlus Eduardo Gunia Schiavon, BRAZIL Bruno Sbrissia, MD, BRAZIL Paulo Roberto Slud Brofman, PhD, BRAZIL
Reliability of Radiologic Assessments of Clinically Relevant Growth Remaining in Knee MRIs of Children and Adolescents with Patellofemoral Instability Abstract Presentation 4 minutes Peter D. Fabricant, MD, MPH, UNITED STATES Madison Heath, BS, UNITED STATES Matthew William Veerkamp, BA, UNITED STATES Simone Gruber, MS, UNITED STATES Daniel W. Green, MD, MS, UNITED STATES Sabrina M. Strickland, MD, UNITED STATES Eric J. Wall, MD, UNITED STATES Douglas Mintz, MD, UNITED STATES Kathleen H Emery, MD, UNITED STATES The JUPITER Group, UNITED STATES Beth Ellen Shubin Stein, MD, UNITED STATES Shital N. Parikh, MD, UNITED STATES
Ramp lesions are six times more likely to be observed in the presence of a posteromedial tibial bone bruise in ACL-injured patients ePoster Presentation Wouter Beel, MD, CANADA Caroline Mouton, PhD, LUXEMBOURG Daniele Tradati, MD, ITALY Christian Nührenbörger, MD, LUXEMBOURG Romain Seil, MD, Prof., LUXEMBOURG
The Effect Of Knee Rotation On The Tibial-Tubercle-Trochlear-Groove Distance In Patients With Patellar Instability: An Analysis Of Mri And Ct Measurements Abstract Presentation 6 minutes Jakob Ackermann, MD, SWITZERLAND Julian Hasler, MD, SWITZERLAND Dimitri Graf, MD, SWITZERLAND Sandro Fucentese, Prof MD, SWITZERLAND Lazaros Vlachopoulos, MD, PhD, SWITZERLAND
The Knee Joint Meniscus Is A Shock Absorber Abstract Presentation 6 minutes Andreas M. Seitz, PhD, GERMANY Daniela Warnecke, PhD, GERMANY Jonas Schwer, M. Sc., GERMANY Anita Ignatius, Prof. Dr., GERMANY Lutz Dürselen, Prof. Dr., GERMANY
Causes Of Revision Following 1,353 Consecutive Attune Total Knee Replacements. ePoster Presentation Francisco Jose Barbosa, MD, FRCS (Tr&Orth), UNITED KINGDOM Ben Arthur Marson, MRCS, UNITED KINGDOM Emily Evans, ., UNITED KINGDOM Zun Ong, ., UNITED KINGDOM Ahaan Gupta, ., UNITED KINGDOM Peter J James, B Med Sci, BMBS (Hons), DipBiomech, , UNITED KINGDOM Benjamin V Bloch, BSc, MBBS, FRCS (Orth), UNITED KINGDOM
Patella Alta, Thochlear Dysplasia and Age are Risk Factors for Recurrent Patellofemoral Dislocation after a First Episode ePoster Presentation Juan Pablo Martinez-Cano, MD, MSc, PhD, COLOMBIA Julian Chica, MD, COLOMBIA Alfredo Martinez Rondanelli, MD, COLOMBIA Erika Rincón, MD, COLOMBIA Martin Eduardo Renjifo, MD, COLOMBIA Laura Zamudio, MD, COLOMBIA Juan José Martinez Arboleda, MD, COLOMBIA
Defining Return To Sport: A Systematic Review ePoster Presentation Josh Doege, MS, UNITED STATES Jack Michael Ayres, BS, UNITED STATES Armin Tarakemeh, BS, UNITED STATES Symone M Brown, MPH, UNITED STATES Bryan Vopat, UNITED STATES Mary K. Mulcahey, MD, UNITED STATES
Risk Of Revision And Adverse Outcomes Following Partial Knee Replacement And High Tibial Osteotomy For Unicompartmental Knee Osteoarthritis : A Nationwide Cohort Study ePoster Presentation Sun-Ho Lee, MD, KOREA, REPUBLIC OF Jong-Keun Seon, MD, PhD, Prof, KOREA, REPUBLIC OF Eun-Kyoo Song, MD, PhD, Prof., KOREA, REPUBLIC OF
Routine Early Post-Operative Dosage Of Hemoglobin Does Not Impact Transfusion Rate After Total Knee Arthroplasty ePoster Presentation Jean-Yves Jenny, Prof., FRANCE Xavier Nicolau, MD, FRANCE
High Tibial Osteotomy Combined Inlay Resurfacing Arthroplasty: Less Patellofemoral Pain And No Correction Loss Abstract Presentation 6 minutes Tahsin Beyzadeoglu, MD, Prof., TURKEY Kerem Yildirim, MD, TURKEY

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Patient Specific Instrumentation In Acl Reconstruction. A Novel Technique Using A 3D Printed Guide.

Patient Specific Instrumentation In Acl Reconstruction. A Novel Technique Using A 3D Printed Guide.

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Patient Specific Instrumentation In Acl Reconstruction. A Novel Technique Using A 3D Printed Guide.

Patient Specific Instrumentation In Acl Reconstruction. A Novel Technique Using A 3D Printed Guide.

Background

Purpose

Methods

Results

Conclusions