Summary

Adolescents undergoing revision arthroscopy demonstrated significant improvement in all patient-reported outcome measures at a minimum two-year follow-up.

Abstract

Purpose

To report minimum two-year patient-reported outcome measures (PROMs) of revision hip arthroscopy in adolescents and to compare their results to a propensity-matched (PM) primary control group.

Methods

Data were prospectively collected and retrospectively reviewed for all patients who underwent revision hip arthroscopy from November 2008 and November 2021. Patients were excluded if they were over the age of 19 years or were dysplastic. A PM comparison was performed to a primary control group in a 1:2 ratio based on age at surgery, sex, body mass index, and acetabular Outerbridge grade. PROMs, clinical benefit achievement rates, and secondary surgeries were reported and compared.

Results

A total of 37 (35 patients) revisions hips were included and PM. Significant improvement was noted for all PROMs in both groups (p < 0.05). The revision group had significantly lower preoperative and postoperative values for mHHS, NAHS, HOS-SSS, and iHOT-12 (P < 0.05), and met the minimum clinically important difference for mHHS, NAHS, and HOS-SSS at lower rates than the primary group (P < 0.05). For NAHS and HOS-SSS, the revision cohort met patient acceptable symptomatic state and maximal outcome improvement at lower rates (P < 0.05). Revision hips underwent secondary arthroscopy at higher rates when compared with primary hips (21.6% vs. 5.4%; P < 0.05) and were 4.83 times as likely to receive an additional arthroscopy as primary hips.

Conclusion

Adolescents undergoing revision arthroscopy demonstrated significant improvement in all PROMs at a minimum two-year follow-up. When compared to a PM primary control group, revision hips had lower preoperative and postoperative values, but similar magnitudes of improvement in all PROMs, met clinically meaningful thresholds at lower rates and more often underwent subsequent arthroscopy and were 4.83 times more likely to require a subsequent hip arthroscopy.