PMID- 36688631 OWN - NLM STAT- MEDLINE DCOM- 20230302 LR - 20230303 IS - 1552-3365 (Electronic) IS - 0363-5465 (Linking) VI - 51 IP - 3 DP - 2023 Mar TI - High Survivorship and Comparable Patient-Reported Outcomes at a Minimum 5 Years After Hip Arthroscopic Surgery in Patients With Femoroacetabular Impingement, With and Without Lateral Rim Dysplasia. PG - 678-686 LID - 10.1177/03635465221145018 [doi] AB - BACKGROUND: Femoroacetabular impingement (FAI) in patients with dysplasia presents a unique challenge to surgeons. Short-term outcomes are conflicting, while longer term follow-up data are only emerging. PURPOSE: To quantify midterm (minimum 5-year follow-up) outcomes after the arthroscopic correction of FAI in the presence of lateral rim dysplasia compared with a matched control group with FAI with normal acetabular coverage. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Prospective outcome data, collected in a consecutive series of patients undergoing arthroscopic FAI correction with lateral rim dysplasia (lateral center-edge angle [LCEA] of 13 degrees -25 degrees ), were reviewed (N = 75 cases). An age- and sex-matched control group of 120 cases was also formed (LCEA >25 degrees ). Survivorship was defined as the avoidance of total hip replacement and assessed using a Kaplan-Meier curve with the log-rank test. Survival rates and patient-reported outcome measure (PROM) scores (modified Harris Hip Score [mHHS], University of California, Los Angeles [UCLA], 36-Item Short Form Health Survey [SF-36], and Western Ontario and McMaster Universities Osteoarthritis Index [WOMAC] preoperatively and at 5 years postoperatively) were compared between the groups. The proportion of patients across groups achieving the minimal clinically important difference (MCID) was compared for each PROM. The dysplasia group was also analyzed independently to identify any factors that may indicate a less favorable outcome using regression analysis. The group was divided into 2 subgroups: borderline dysplasia (LCEA of 20 degrees -25 degrees ) and severe dysplasia (LCEA <20 degrees ). RESULTS: The survival rate in the dysplasia group was 97%. There was no statistical difference with respect to survival rates or any PROM scores (P > .05 for all) between the groups. There were similar rates of achieving the MCID between the groups for the mHHS, UCLA, and WOMAC. The FAI control group had a higher rate of achieving the MCID for the SF-36 (P = .012; effect size = 0.274 [small]). Subgroup analysis indicated a lower survival rate (78% vs 100%, respectively; P < .001) in female cases in the dysplasia group (n = 9) compared with male cases in the dysplasia group (n = 66). The UCLA score in female cases in the dysplasia group at 5 years was statistically lower compared with that in male cases in the dysplasia group (6 vs 10, respectively; P = .003; effect size = 0.378 [medium]), but no other outcome revealed any differences between the sexes. There were also no variables identified on regression analysis that accurately predicted a poorer outcome in the dysplasia group. When stratified by severity, there was no difference in survivorship or outcomes between those with severe dysplasia (LCEA <20 degrees ; n = 11) and those with borderline dysplasia (LCEA of 20 degrees -25 degrees ; n = 64). CONCLUSION: An arthroscopic intervention was a successful treatment option for FAI in the presence of lateral rim dysplasia at midterm follow-up. Irrespective of the severity of dysplasia, patients can expect similar improvements to those in patients with normal femoral head coverage. FAU - Mullins, Karen AU - Mullins K AD - UPMC Sports Medicine Clinic, Carriganore, Ireland. FAU - Filan, David AU - Filan D AD - UPMC Sports Medicine Clinic, Carriganore, Ireland. FAU - Carton, Patrick AU - Carton P AD - UPMC Sports Medicine Clinic, Carriganore, Ireland. AD - The Hip and Groin Clinic, Waterford, Ireland. LA - eng PT - Journal Article DEP - 20230123 PL - United States TA - Am J Sports Med JT - The American journal of sports medicine JID - 7609541 SB - IM MH - Humans MH - Male MH - Female MH - *Femoracetabular Impingement/surgery MH - Hip Joint/surgery MH - Cohort Studies MH - Prospective Studies MH - *Hip Dislocation/surgery MH - Survivorship MH - Arthroscopy/methods MH - Treatment Outcome MH - Patient Reported Outcome Measures MH - Retrospective Studies MH - Follow-Up Studies OTO - NOTNLM OT - FAI OT - arthroscopic surgery OT - dysplasia OT - impingement OT - labral repair OT - lateral rim EDAT- 2023/01/24 06:00 MHDA- 2023/03/03 06:00 CRDT- 2023/01/23 08:53 PHST- 2023/01/24 06:00 [pubmed] PHST- 2023/03/03 06:00 [medline] PHST- 2023/01/23 08:53 [entrez] AID - 10.1177/03635465221145018 [doi] PST - ppublish SO - Am J Sports Med. 2023 Mar;51(3):678-686. doi: 10.1177/03635465221145018. Epub 2023 Jan 23.