PMID- 35705973 OWN - NLM STAT- MEDLINE DCOM- 20220617 LR - 20220716 IS - 1749-799X (Electronic) IS - 1749-799X (Linking) VI - 17 IP - 1 DP - 2022 Jun 15 TI - Healing of joint capsule after hip arthroscopy using interportal capsulotomy and capsular closure influences clinical outcomes. PG - 316 LID - 10.1186/s13018-022-03208-z [doi] LID - 316 AB - BACKGROUND: Hip arthroscopy for treatment of femoroacetabular impingement (FAI) has developed rapidly and has been shown to significantly decrease pain and improve hip function. However, the relationship between hip capsule characteristics and healing after arthroscopic surgery and changes in patient-reported outcomes scores (PROs) for postoperative pain, function, and symptoms is still uncertain. METHODS: We retrospectively evaluated consecutive patients who were diagnosed with FAI and underwent hip arthroscopy for treatment in our hospital between May 2018 and November 2020. All patients had preoperative MRI and postoperative MRI at least 6 months after arthroscopy. Hip capsular thickness was measured at the proximal, middle, and distal site of the capsule. PROs and PROs at final follow-up were obtained, including visual analog scale (VAS) for pain and modified Harris Hip Score (mHHS). RESULTS: A total of 194 patients were included in this study. The mean MRI follow-up time was 14.3 (range, 6-37) months, and the mean clinical follow-up time was 26.1 (range, 12-43) months. Postoperative capsular thickness or net change were not correlated with postoperative PROs and VAS (P > .05). Capsular defect was observed in 17 (8.8%) patients. Patients with capsular defect had a relatively higher BMI (P < .05). Patients with capsular defect had a significant lower mHHS and higher VAS compared with patients with continuous capsule (P < .05). Ninety-one percentage of patients with continuous capsule surpassed minimal clinically important difference (MCID) and 80.8% achieved PASS, but only 58.8% of patients with capsular defect surpassed MCID and 47.1% achieved patient acceptable symptom state (PASS). CONCLUSIONS: Postoperative capsular thickness may not have influence on the clinical outcomes of hip arthroscopy for treatment of FAI. Some capsule of patients who underwent arthroscopic interportal capsulotomy and repair could not heal. Postoperative capsular continuity had a great impact on the clinical outcomes of hip arthroscopy for FAI. Patients with higher BMI may be more likely to have capsule failure to heal. CI - (c) 2022. The Author(s). FAU - Gao, Guanying AU - Gao G AD - Institute of Sports Medicine, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China. FAU - Jiao, Chenbo AU - Jiao C AD - Institute of Sports Medicine, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China. FAU - Liu, Jiayang AU - Liu J AD - Institute of Sports Medicine, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China. FAU - Zhou, Chang AU - Zhou C AD - Institute of Sports Medicine, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China. FAU - Liu, Yuhao AU - Liu Y AD - Institute of Sports Medicine, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China. FAU - Ao, Yingfang AU - Ao Y AD - Institute of Sports Medicine, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China. FAU - Xu, Yan AU - Xu Y AD - Institute of Sports Medicine, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China. yanxu@139.com. LA - eng PT - Journal Article DEP - 20220615 PL - England TA - J Orthop Surg Res JT - Journal of orthopaedic surgery and research JID - 101265112 SB - IM MH - Activities of Daily Living MH - *Arthroscopy MH - *Femoracetabular Impingement/diagnostic imaging/surgery MH - Follow-Up Studies MH - Hip Joint/diagnostic imaging/surgery MH - Humans MH - Joint Capsule/diagnostic imaging/surgery MH - Pain MH - Retrospective Studies MH - Treatment Outcome PMC - PMC9202155 OTO - NOTNLM OT - Capsule OT - Femoroacetabular impingement OT - Hip OT - Magnetic resonance imaging COIS- The authors declare that they have no competing interests. EDAT- 2022/06/16 06:00 MHDA- 2022/06/18 06:00 PMCR- 2022/06/15 CRDT- 2022/06/15 23:41 PHST- 2022/02/08 00:00 [received] PHST- 2022/06/08 00:00 [accepted] PHST- 2022/06/15 23:41 [entrez] PHST- 2022/06/16 06:00 [pubmed] PHST- 2022/06/18 06:00 [medline] PHST- 2022/06/15 00:00 [pmc-release] AID - 10.1186/s13018-022-03208-z [pii] AID - 3208 [pii] AID - 10.1186/s13018-022-03208-z [doi] PST - epublish SO - J Orthop Surg Res. 2022 Jun 15;17(1):316. doi: 10.1186/s13018-022-03208-z.