FP13.4 Minimum 5-Year Outcomes Following Arthroscopic Subspine Decompression in Patients with Femoroacetabular Impingement: A Propensity-Matched Study

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ID: 331091
2026
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Abstract
Abstract ICLB13 - Outside the Joint: Mastering Extra-Articular Pain and Hip-Spine Basics, Session Room 6 (BMCC Level 3), October 9, 2026, 14:00 - 16:00 Background Subspine impingement (SSI) is a frequently coexisting pathology in patients undergoing hip arthroscopy for femoroacetabular impingement (FAI). While short-term outcomes following arthroscopic subspine decompression (SSD) are promising, mid-term outcomes remain unclear. Purpose (1) To evaluate minimum 5-year patient-reported outcomes (PROs), survivorship, and rates of clinically meaningful improvement following arthroscopic SSD in patients undergoing hip arthroscopy for FAI; and (2) to compare these results to a matched cohort without SSD. Study Design Cohort study; Level of evidence, 3. Methods Patients undergoing primary hip arthroscopy for FAI between 2009 and 2019 were retrospectively reviewed. Inclusion criteria included a confirmed diagnosis of FAI and SSI, and complete PROs (mHHS, NAHS, HOS-SSS, iHOT-12, and VAS) at a minimum of 5 years. Exclusion criteria included prior ipsilateral hip surgery, workers’ compensation claims, and Tönnis grade >1. SSD patients were matched 1:2 to a control group without SSI. Matching variables included age, sex, body mass index (BMI), follow-up duration, lateral center-edge angle (LCEA), alpha angle, Tönnis grade, acetabular labrum articular disruption (ALAD) grade, and labral treatment. Outcomes were compared between groups, including survivorship and achievement of minimal clinically important difference (MCID) and patient acceptable symptom state (PASS). Results A total of 94 SSD patients were matched to 188 control patients. Patients who underwent SSD demonstrated significant improvements in all PROs at a minimum 5-year follow-up (p < 0.0001). MCID and PASS achievement rates were comparable between groups (p > 0.05). The SSD cohort also demonstrated favorable survivorship, with 5.3% converting to total hip arthroplasty or hip resurfacing. Compared to matched controls, outcomes in the SSD group were comparable in terms of postoperative PROs, satisfaction (p > 0.05), and conversion rates to further surgery (p = 0.61). Notably, time to revision was significantly longer in the SSD group (52.0 vs. 32.8 months, p = 0.04). Conclusion Arthroscopic SSD performed concurrently with FAI correction yields durable improvements in hip function and pain relief at minimum 5-year follow-up. Outcomes and survivorship are comparable to those of patients without SSI undergoing FAI correction alone, supporting the use of SSD in appropriately selected patients with SSI.
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Authors Krishi Rana, Shahar R. Barda, Roger Quesada-Jimenez, Megan E. Flynn, Etan P. Sugarman, Benjamin Domb
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Journal Journal of hip preservation surgery
Year 2026
DOI
10.1093/jhps/hnag043.100
URL
https://doi.org/10.1093/jhps/hnag043.100
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