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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Treatment Modalities And Outcomes Following Acetabular Fractures In The Elderly: A Systematic Review Abstract Presentation 3 minutes Brian McCormick, MD, UNITED STATES Joseph Serino, MD, UNITED STATES Sebastian Orman, MD, UNITED STATES Alex R. Webb, MD, UNITED STATES David X. Wang, MD, UNITED STATES Sharri Mortenson, MD, UNITED STATES Arvind Von Keudell, MD, UNITED STATES
Comparison Of Pull-Out Strength Following Ligamentum Teres Reconstruction In The Hip: Peek Corkscrew Suture Anchor Versus Cortical Button Fixation: A Cadaveric Study. Abstract Presentation 5 minutes Ajay C. Lall, MD, MS, FAAOS, UNITED STATES Hari Krishna Ankem, MD, UNITED STATES Samantha Diulus, BS, UNITED STATES Benjamin G. Domb, MD, UNITED STATES
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
“X-Square” Technique For Radial Meniscal Root Tear ePoster Presentation Winyou Ratanachai, MD.M Ch(Orth)., THAILAND Keerati Klinchanhom, MD, THAILAND
Predicting Dissatisfaction Following Total Hip Arthroplasty Using A Bayesian Model Averaging (Bma) Approach: Results From The Australian Arthroplasty Clinical Outcomes Registry (Acorn) ePoster Presentation Jan Peter Van Meirhaeghe, MD, BELGIUM Rob Molnar, MBBS, AUSTRALIA Sam Adie, BSc(Med) MBBS MSpMed MPH PhD FRACS, AUSTRALIA
Superior Outcomes With Routine Capsular Repair In Hip Arthroscopy Abstract Presentation 5 minutes Austin M Looney, MD, UNITED STATES Spencer M Comfort, BS, UNITED STATES Patrick T Connolly, BS, UNITED STATES Julia E McCann, MD, UNITED STATES Andrew Curley, MD, UNITED STATES William F. Postma, MD, UNITED STATES
Surgical Treatment of High-Grade Acute Intramuscular Hamstring Tendon Injuries in Athletes ePoster Presentation Randeep Singh Aujla, MBChB ChM FRCS (Tr&Orth) MFSEM, UNITED KINGDOM Steven Cecchi, BSc (Hons), MBBS, AUSTRALIA Peter Alberto D'Alessandro, MBBS Hons. (UWA) FRACS FAOrthA, AUSTRALIA Peter T. Annear, FRACS(Orth), AUSTRALIA
Hip Osteochondroplasty May Benefit The Non-Ideal Patient With Femoroacetabular Impingement: Analysis From The Embedded Prospective Cohort Of The First Trial Abstract Presentation 6 minutes Mahmoud Almasri, MD, FRCSC, UNITED STATES Nicole Simunovic, MSc, CANADA Diane Heels-Ansdell, MSc, CANADA Olufemi R. Ayeni, MD, PhD, MSc, FRCSC, CANADA FIRST Investigators, MD, CANADA
Snapping Hip Syndrome : An Uncommon Cause of Hip Pain ePoster Presentation Pollyanna Christine Ferreira Frazão, MD, PORTUGAL Rui Cardoso, MD, PORTUGAL Daniela Roque, MD, PORTUGAL Diogo Rocha Carvalho, Md, MsD, PORTUGAL André Santos, MD, PORTUGAL Sérgio Pita, MD, PORTUGAL Filipe Sá Malheiro, MD, PORTUGAL Tiago Pato, PORTUGAL Carlos Filipe Gonçalves João, MD, PORTUGAL Carlos Almeida, PORTUGAL
Risk Factors For Early Conversion To Hip Arthroplasty Following Hip Arthroscopy: A Matched Cohort Analysis Abstract Presentation 4 minutes Joseph J. Ruzbarsky, MD, UNITED STATES Max Seiter, MD, UNITED STATES Rui Soares, BS, UNITED STATES Lauren Pierpoint, PhD, UNITED STATES Karen K. Briggs, MPH, MBS, UNITED STATES Marc J. Philippon, MD, UNITED STATES
Mid-Term Outcome and Strength Assessment after Proximal Rectus-Femoris-Refixation in Athletes ePoster Presentation Maximilian Hinz, MD, GERMANY Stephanie Geyer, MD, GERMANY Felix Winden, Cand Med, GERMANY Alexander Braunsperger, B.Sc., GERMANY Florian Kreuzpointner, PhD, GERMANY Benjamin Daniel Kleim, MBBS, MD, MRes, GERMANY Andreas B. Imhoff, MD, Prof. Emeritus, GERMANY Julian Mehl, MD, GERMANY
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
Promis Validation In Hip Arthroscopy: A Shift Towards Reducing Survey Burden Abstract Presentation 4 minutes Erik Gerlach, MD, UNITED STATES Ryan S. Selley, MD, UNITED STATES Daniel Johnson, MD, UNITED STATES Richard W. Nicolay, MD, UNITED STATES Gregory Versteeg, MD, UNITED STATES Mark Andrew Plantz, BS, UNITED STATES Peter Swiatek, MD, UNITED STATES Eric Sanders, MD, UNITED STATES Bejan Alvandi, MD, UNITED STATES Vehniah K. Tjong, MD, FRCSC, UNITED STATES Michael Terry, MD, UNITED STATES

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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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