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All participants performed the single-leg squat (SLS), and kinematic data were collected using an 8-camera motion capture system. One-way analysis of variance was used to compare baseline, 3-month postoperative, and 6-month postoperative kinematic data of the FAIS group with those of the healthy control group. Post hoc comparisons were conducted using the Tukey test to determine between-group differences. Correlation analysis was performed to assess the relationship between changes in the hip flexion angle and changes in iHOT-33 and HAGOS-Sport scores.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      At 3 months postoperatively, the involved limb hip flexion angle (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .021), hip adduction angle (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .0011), knee flexion angle (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .016), and change in the center of mass (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .0034) were reduced compared with the healthy control group. At 6 months postoperatively, no significant kinematic differences were observed between the FAIS and healthy control groups. Correlations between changes in the iHOT-33 score at 3 months and changes in the hip flexion angle at 6 months were positive (\n                      <jats:italic toggle=\"yes\">r<\/jats:italic>\n                      = 0.64;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .0094), and changes in the iHOT-33 score at 6 months were also positively correlated with changes in the hip flexion angle at 6 months (\n                      <jats:italic toggle=\"yes\">r<\/jats:italic>\n                      = 0.53;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .041).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Patients with FAIS exhibited abnormal kinematics during the SLS at 3 months postoperatively, which showed improvement by 6 months. Furthermore, improvement in sagittal-plane angles of the hip at 6 months postoperatively was correlated with the iHOT-33 score, supporting our hypothesis. Clinicians should not overlook functional recovery after hip arthroscopy for FAIS.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/23259671261432183","type":"journal-article","created":{"date-parts":[[2026,5,13]],"date-time":"2026-05-13T17:11:49Z","timestamp":1778692309000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Association Between Lower Limb Kinematics During Single Leg Squat and Patient-Reported Outcomes After Hip Arthroscopy for Femoroacetabular Impingement Syndrome"],"prefix":"10.1177","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-2480-6474","authenticated-orcid":false,"given":"Yuang","family":"Hao","sequence":"first","affiliation":[{"name":"Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing, China"},{"name":"Beijing Key Laboratory of Research and Translation for Drugs and Medical Devices in Precision Diagnosis and Treatment of Sports Injuries,Beijing, China"},{"name":"Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China"},{"name":"School of Sports Medicine and Rehabilitation, Beijing Sport University, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yao","family":"Pan","sequence":"additional","affiliation":[{"name":"Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing, China"},{"name":"Beijing Key Laboratory of Research and Translation for Drugs and Medical Devices in Precision Diagnosis and Treatment of Sports Injuries,Beijing, China"},{"name":"Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China"},{"name":"School of Sports Medicine and Rehabilitation, Beijing Sport University, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qi","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing, China"},{"name":"Beijing Key Laboratory of Research and Translation for Drugs and Medical Devices in Precision Diagnosis and Treatment of Sports Injuries,Beijing, China"},{"name":"Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tong-Chuan","family":"He","sequence":"additional","affiliation":[{"name":"Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, University of Chicago Medical Center, Chicago, Illinois, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xin","family":"Miao","sequence":"additional","affiliation":[{"name":"Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing, China"},{"name":"Beijing Key Laboratory of Research and Translation for Drugs and Medical Devices in Precision Diagnosis and Treatment of Sports Injuries,Beijing, China"},{"name":"Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2735-9542","authenticated-orcid":false,"given":"Yan","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing, China"},{"name":"Beijing Key Laboratory of Research and Translation for Drugs and Medical Devices in Precision Diagnosis and Treatment of Sports Injuries,Beijing, China"},{"name":"Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2026,5,13]]},"reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.91B5.22028"},{"key":"e_1_3_3_3_2","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.87B7.15203"},{"key":"e_1_3_3_4_2","doi-asserted-by":"publisher","DOI":"10.1093\/ptj\/pzab157"},{"key":"e_1_3_3_5_2","first-page":"711","article-title":"Hip arthroscopy: patient assessment and indications","volume":"52","author":"Byrd JW.","year":"2003","unstructured":"Byrd JW. 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