Summary
This study suggests hip arthroscopy for FAIS remains an effective intervention in patients with prior ipsilateral FNSF with no significant difference in PROMs at 1-year after surgery.
Abstract
Introduction
FNSFs are uncommon but serious athletic injuries and outcomes in patients with a history of FNSF who subsequently undergo ipsilateral hip arthroscopy for femoroacetabular impingement syndrome (FAIS) are not presently described. The purpose of this study was to characterize these patients at our institution and evaluate their patient-reported outcome measurements (PROM) following hip arthroscopy.
Methods
We included all patients who underwent a hip arthroscopy for femoroacetabular impingement who had a history of prior FNSF by cross referencing all institutional MRIs with FNSF between 2017 and 2023 with our hip arthroscopy registry. PROMs collected before and after hip arthroscopy included the international hip outcome tool 12 (ihot-12), modified Harris hip score (mHHS), and hip outcome activities of daily living (HOS-ADL) and sport (HOS-sport) scores. PROMs were evaluated for achievement of patient acceptable symptom state (PASS) and minimal clinically important difference (MCID) and with a 2:1 matched, repeated measures model to compare with a control group from the hip arthroscopy registry.
Results
85 patients with FNSF were identified and 12 subsequently underwent ipsilateral hip arthroscopy for FAIS. All patients with data at 1-year follow-up met PASS in the FNSF group for ihot-12 (n=7), while 7/8 (87.5%), 6/7 (85.7%), and 6/7 (85.7%) did for mHHS, HOS-ADL, and HOS-sport, respectively. A MCID was achieved at 1-year follow-up in 71.4% for ihot-12, 62.5% for mHHS, 71.4% for HOS-ADL, and 57.1% for HOS-sport. There was no difference in postoperative PROMs between groups at 6 months and 1-year for all PROMs (p = 0.67, 0.99, 0.78, and 0.16 for ihot-12, mHHS, HOS-ADL, and HOS-sport, respectively).
Conclusion
This study suggests hip arthroscopy for FAIS remains an effective intervention in patients with prior ipsilateral FNSF with no significant difference in PROMs at 1-year after surgery.