Introduction.
Contribution of tibial malrotation to hip joint kinematics and impingement, especially with certain activities, is poorly understood. Tibial malrotation treatment includes Distal Tibial Derotation Osteotomy (DTDO). We aimed to determine DTDO clinical effectiveness in patients with hip symptoms.

Materials.
A review of patients undergoing DTDO between 2018-2020. DTDO was routinely stabilised with tibial plate (EVOS,S&N). We reviewed our management of tibial torsion and associated ipsilateral pathology: MRI-defined intra-articular pathomorphology (CAM/pincer) and non-CAM/pincer-related labral tears, as well as excessive combined femoral/acetabular version (McKibbin Index (MI) >50o). If presenting symptoms resolved, patients were discharged at 1year.

Results.
27 patients underwent DTDO for hip pain, 3 – for hip and knee pain. Mean tibial torsion was 48.6o (41-63o). Average age–27years (18-44), average follow-up–20months (3-36).
Thirteen patients (43%) had a co-existent CAM/pincer and 7 (23%) – excessive MI (51-76o). Of 13 CAM/pincer patients post-DTDO:
• 2 patients settled (discharged)
• 4 had hip arthroscopy prior to DTDO
- 1 settled post-DTDO (discharged)
- 3 are persistently symptomatic <1yr follow-up, including 1 with excessive MI (51o)
• 3 with persistent hip symptoms >1yr post-DTDO underwent and 1 awaits hip arthroscopy (all with normal MI)
• 4 patients <1yr post-DTDO are improving.
Of 17 non-CAM/pincer patients:
• 4 had labral tears
- 2 settled post-DTDO (discharged)
- 2 – clinically improving (<1yr follow-up)
• 7 had excessive femoral/acetabular version
- 2 – discharged
- 5 – under review (<1yr follow-up)
• 6 others discharged
• no direct hip interventions were required to date.
Four patients required plate removal, no complications were identified.

Conclusion.
Patients with rotational malalignment frequently present with multi-level deformity and high prevalence of co-existent CAM/pincer. Hip arthroscopy for intra-articular pathology prior to malrotation correction is likely to fail. Malrotation correction should be prioritised. Significant proportion of symptomatic hip impingement patients (=45%) improve with tibial derotation.

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Alpha Angle More Useful Than Femoral Head-Neck Offset to Predict Intra-Articular Damage in Patients with FAI Undergoing Hip Arthroscopy Abstract Presentation 5 minutes Jacob Shapira, MD, UNITED STATES Jade S Owens, BS, UNITED STATES David R. Maldonado, MD, UNITED STATES Philip Joseph Rosinsky, MD, UNITED STATES Hari Krishna Ankem, MD, UNITED STATES Bezalel Peskin, MD, ISRAEL Ajay C. Lall, MD, MS, FAAOS, UNITED STATES Benjamin G. Domb, MD, UNITED STATES
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Amniotic Suspension Allograft Injection For Hip Osteoarthritis: Prospective Pilot Study With 1 Year Follow Up Abstract Presentation 5 minutes Marc R. Safran, MD, Prof., UNITED STATES Molly Claire Meadows, MD, UNITED STATES Katia Elisman, BS, UNITED STATES Shane Nho, MD, MS, UNITED STATES
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Health Literacy in Periacetabular Osteotomy Procedure: A Quantitative Assessment of the Readability, Understandability and Actionability of Online Patient Education Material ePoster Presentation Alan Shamrock, MD, UNITED STATES Trevor Gulbrandsen, MD, UNITED STATES Burke Gao, MD, UNITED STATES Mary Kate Skalitzky, BA, UNITED STATES Robert W. Westermann, MD, UNITED STATES Michael C. Willey, MD, UNITED STATES
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Endoscopic Iliopsoas Lengthening For Treatment Of Recalcitrant Iliopsoas Tendinitis After Total Hip Arthroplasty Abstract Presentation 5 minutes Marc R. Safran, MD, Prof., UNITED STATES John Carlo Bonano, MD, UNITED STATES Christopher Jamero, MA, ATC, UNITED STATES Nicole Segovia Pham, MPH, UNITED STATES James I. Huddleston, MD, UNITED STATES
A Systematic Review Of Terminology, Surgical Techniques, Preoperative Diagnostic Measures, And Geographic Differences In The Treatment Of Athletic Pubalgia/Sports Hernia/Core Muscle Injury/Inguinal Disruption ePoster Presentation Matthew J. Kraeutler, MD, UNITED STATES Omer Mei-Dan, MD, UNITED STATES John W. Belk, BA, UNITED STATES Christopher M. Larson, MD, UNITED STATES Toghrul Talishinskiy, MD, UNITED STATES Anthony Scillia, UNITED STATES
A Comparison Of Perioperative Outcomes Between Patients Who Underwent Hip Arthroscopy With And Without The Pericapsular Nerve Group Block ePoster Presentation Albert A Yusupov, MD, UNITED STATES Iciar M Davila Castrodad, MD, UNITED STATES Matthew J. Kraeutler, MD, UNITED STATES Christopher J Mazzei, MD, UNITED STATES Stephen A. Hunt, MD Kimberly V Tucker, MD, UNITED STATES Anthony Scillia, UNITED STATES Patrick A Armstrong, MD, UNITED STATES Mathew S Chow, MD, UNITED STATES Richard A Stennett, MD, UNITED STATES James C Wittig, MD
Arthroscopic Tendon Release for Iliopsoas Impingement after Total Hip Arthroplasty ePoster Presentation Michael Andreas Finsterwald, MD, AUSTRALIA Georgina Waters, MD, AUSTRALIA Jay R. Ebert, PhD, AUSTRALIA Christopher W. Jones, FAOrthA FRACS PhD MBBS(Hons) BEng(Hons) BCom, AUSTRALIA Piers Yates, MBBS(Hons) BSc(Hons) MRCS(Eng) FRCS(Tr & Orth) FRA, AUSTRALIA Peter Alberto D'Alessandro, MBBS Hons. (UWA) FRACS FAOrthA, AUSTRALIA
Characterizing the Incidence of Avascular Necrosis after Corticosteroid Injections of the Hip Abstract Presentation 5 minutes Nathan Varady, MD, MBA, UNITED STATES Paul F Abraham, BS, UNITED STATES Ahab Chopra, BA, UNITED STATES Michael Peter Kucharik, BS, UNITED STATES Wendy Madeline Meek, BBA, UNITED STATES Christopher T Eberlin, BS, UNITED STATES David Freccero, MD, UNITED STATES Eric L. Smith, MD, UNITED STATES Scott D Martin, MD, UNITED STATES
Endoscopic Iliotibial Band Release During Hip Arthroscopy For Femoroacetabular Impingement Syndrome And External Snapping Hip Had Better Patient-Reported Outcomes: A Retrospective Comparative Study Abstract Presentation 5 minutes 春宝李, 医学博士，博士, CHINA Shanxing Zhang, MD, CHINA
Similar Joint Space Measurements Are Obtained With Supine And Weightbearing Anteroposterior Pelvis Radiographs: Results Of A Prospective Study Abstract Presentation 5 minutes Blake M. Bodendorfer, MD, UNITED STATES Vishal A. Mehta, DO, UNITED STATES Austin M Looney, MD, UNITED STATES Kenneth Tepper, MD, UNITED STATES
The Effect Of Osteochondroplasty On Time To Reoperation After Arthroscopic Management Of Femoroacetabular Impingement Abstract Presentation 5 minutes Jeffrey Kay, MD, CANADA Nicole Simunovic, MSc, CANADA Olufemi R. Ayeni, MD, PhD, MSc, FRCSC, CANADA FIRST Investigators, MD, CANADA
Outcomes Of Revision Hip Arthroscopy Are Unaffected By Intraoperative Findings: A Matched Cohort Study ePoster Presentation Hari Krishna Ankem, MD, UNITED STATES Samantha Diulus, BS, UNITED STATES Cynthia Kyin, BA, UNITED STATES Jacob Shapira, MD, UNITED STATES Philip Joseph Rosinsky, MD, UNITED STATES Mitchell Meghpara, MD, UNITED STATES Ajay C. Lall, MD, MS, FAAOS, UNITED STATES Benjamin G. Domb, MD, UNITED STATES
Solving Social Inequality In Surgical Outcomes By Combining Standardized Treatment And Individualized Patient Education ePoster Presentation Benjamin Saks, MD, UNITED STATES Vivian Ouyang, BS, UNITED STATES Andrew Jimenez, MD, UNITED STATES Ajay C. Lall, MD, MS, FAAOS, UNITED STATES Benjamin G. Domb, MD, UNITED STATES
Total Hip Arthroplasty (THA) after Previous Hip Arthroscopy: A Mid-Term Functional and Clinical Comparison with Index THA Abstract Presentation 5 minutes Kelsi Greenwood, BScHons, SOUTH AFRICA Jurek R. T. Pietrzak, MBBCh, FCS(SA)Orth, UNITED KINGDOM Zia Maharaj, MBChB(Pret), SOUTH AFRICA Josip N. Cakic, MD, PhD, FCS(SA)Orth, MMed(Orth)WITS, SOUTH AFRICA
Traumatic Hip Dislocations In The Pediatric Patient: Injury Patterns, Need For Axial Imaging, Outcomes, And Selective Hip Arthroscopy Abstract Presentation 5 minutes Cliff Willimon, MD, UNITED STATES Anthony Egger, MD, UNITED STATES Crystal A. Perkins, MD, UNITED STATES
Efficacy Of Tranexamic Acid In Hip Fracture Surgeries ePoster Presentation Aabid Sanaullah, MBBS,MRCS,MRCPS,PGDipTrauma Surg.FEBOT,FRCSTr&Orth, UNITED KINGDOM Adeel Nawab Ditta, MBBS, MRCS, UNITED KINGDOM Olufunso Damilare Onayemi, MRCS MCH (Ortho), UNITED KINGDOM Ahsan Sheeraz, BSc MBBS MRCS, UNITED KINGDOM Atif A. Malik, MB ChB, MRCS Ed, MSc. (Orto. Eng), FRCS Tr & Orth, UNITED KINGDOM
Stem Cells Injection And Percutaneous Femoral Head Decompression - An Extremely Rare Procedure With Good Results ePoster Presentation Sofia Moura De Carvalho, MD, PORTUGAL Inês Domingues, MD, PORTUGAL Liliana Domingues, MD, PORTUGAL Eduardo Ramalho Silva, MD, PORTUGAL Gonçalo Lavareda, MD, PORTUGAL Filipe Machado, MD, PORTUGAL Rita Ricardo, MD, PORTUGAL

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Can Hip Pain Be Treated With Tibial Malrotation Correction?

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Can Hip Pain Be Treated With Tibial Malrotation Correction?

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