PMID- 36089924 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220913 IS - 2325-9671 (Print) IS - 2325-9671 (Electronic) IS - 2325-9671 (Linking) VI - 10 IP - 9 DP - 2022 Sep TI - Correlating Biomechanical Gait Analysis With Patient-Reported Outcomes After Hip Arthroscopy for Femoroacetabular Impingement Syndrome. PG - 23259671221121352 LID - 10.1177/23259671221121352 [doi] LID - 23259671221121352 AB - BACKGROUND: Postoperative biomechanics after hip arthroscopy for femoroacetabular impingement syndrome (FAIS) are an outcome of interest, but correlation with patient-reported outcomes (PROs) remains unclear. PURPOSE/HYPOTHESIS: The purpose of this study was to assess the correlation between changes in hip biomechanics in FAIS patients after hip arthroscopy and changes in PRO scores. We hypothesized that gait analysis would demonstrate significant correlations between pre- and postoperative changes in biomechanics and changes in PRO scores. STUDY DESIGN: Descriptive laboratory study. METHODS: FAIS patients without dysplasia or arthritis who underwent primary hip arthroscopy for labral repair and femoroplasty underwent preoperative and 1-year postoperative 3-dimensional motion tracking and biomechanical testing during normal gait. Joint kinematics calculated included flexion/extension (sagittal plane), abduction/adduction (frontal plane), and internal/external rotation (transverse plane). Peak hip angles and moments were compared between baseline and 1-year postoperative measures. At baseline, 1-year, and 2-year postoperatively, patients completed the following PRO surveys: 12-Item Short Form Health Survey (SF-12), modified Harris Hip Score (mHHS), and Hip disability and Osteoarthritis Outcome Score (HOOS). Joint kinematics that significantly improved 1 year after surgery were assessed for correlations with PRO scores. RESULTS: A total of 10 patients (12 hips) were enrolled prospectively. PROs significantly improved at 1 and 2 years postoperatively compared with baseline values for HOOS, mHHS, and SF-12 Physical Component Score, with all patients achieving the minimal clinically important difference (MCID) on the HOOS Sport/Recreation and Quality of Life subscales. From preoperatively to 1-year postoperatively, significant improvements were seen in peak hip abduction angle (from -2.3 degrees +/- 1.8 degrees to -4.6 degrees +/- 1.8 degrees ; P = .0058) and peak hip extension moment (from -1.03 +/- 0.19 to -0.85 +/- 0.20 N.m/kg; P = .014); however, there were no significant correlations between these changes and the pre- to postoperative changes on any PRO scores. CONCLUSION: Gait analysis of FAIS patients after hip arthroscopy demonstrated small, albeit significant, changes in postoperative hip kinetics and kinematics; however, these changes did not correlate with the large, clinically significant improvements in PROs at 1 year after surgery. CLINICAL RELEVANCE: The results of this study suggest that the degree of improvement in short-term PROs after hip arthroscopy for FAIS may not be related to small changes in biomechanics postoperatively. CI - (c) The Author(s) 2022. FAU - Kannan, Abhishek S AU - Kannan AS AD - Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California, USA. FAU - Hartwell, Matthew J AU - Hartwell MJ AD - Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California, USA. FAU - Grace, Trevor AU - Grace T AD - Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California, USA. FAU - Hammond, Eric AU - Hammond E AD - Musculoskeletal and Quantitative Imaging Research Group, Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California, USA. FAU - Soriano, Kylen K J AU - Soriano KKJ AD - Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California, USA. FAU - Souza, Richard B AU - Souza RB AD - Musculoskeletal and Quantitative Imaging Research Group, Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California, USA. FAU - Zhang, Alan L AU - Zhang AL AD - Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California, USA. LA - eng PT - Journal Article DEP - 20220905 PL - United States TA - Orthop J Sports Med JT - Orthopaedic journal of sports medicine JID - 101620522 PMC - PMC9449515 OTO - NOTNLM OT - biomechanics OT - femoroacetabular impingement OT - gait analysis OT - hip arthroscopy OT - outcome COIS- One or more of the authors has declared the following potential conflict of interest or source of funding: This study was funded by the American Orthopaedic Society for Sports Medicine (YIG-2016-1). A.S.K. has received education payments from Medwest. A.L.Z. has received consulting fees from DePuy and Stryker. AOSSM checks author disclosures against the Open Payments Database (OPD). AOSSM has not conducted an independent investigation on the OPD and disclaims any liability or responsibility relating thereto. EDAT- 2022/09/13 06:00 MHDA- 2022/09/13 06:01 PMCR- 2022/09/05 CRDT- 2022/09/12 03:34 PHST- 2022/06/27 00:00 [received] PHST- 2022/07/06 00:00 [accepted] PHST- 2022/09/12 03:34 [entrez] PHST- 2022/09/13 06:00 [pubmed] PHST- 2022/09/13 06:01 [medline] PHST- 2022/09/05 00:00 [pmc-release] AID - 10.1177_23259671221121352 [pii] AID - 10.1177/23259671221121352 [doi] PST - epublish SO - Orthop J Sports Med. 2022 Sep 5;10(9):23259671221121352. doi: 10.1177/23259671221121352. eCollection 2022 Sep.