Revision Hip Arthroscopy in the Borderline Dysplastic Population: Reporting Outcomes With Minimum 2-Year Follow-up, With a Subanalysis Against a Propensity-Matched Nondysplastic Control Group
Authors: Maldonado DR, Kyin C, Shapira J, Rosinsky PJ, Meghpara MB, Yelton MJ, Lall AC, Domb BG
Background
Revision hip arthroscopy in patients with borderline hip dysplasia (BDH) remains controversial due to limited outcome data.
Methods
Comparison of revision arthroscopy outcomes in BDH patients versus a propensity-matched non-dysplastic control group, focusing on patient-reported hip scores and pain at a minimum 2-year follow-up.
Key Findings
- Both cohorts showed significant improvements in hip function and pain.
- BDH patients achieved the MCID for mHHS at a 70% rate.
- Conversion to total hip arthroplasty (THA) was significantly higher in the BDH group (23.8% vs. 7.9%).
Conclusions
Revision hip arthroscopy in BDH patients yields functional improvement but carries an elevated risk of progression to THA compared to non-dysplastic patients.
What Does This Mean for Providers?
Providers should recognize that while revision arthroscopy can benefit BDH patients functionally, they must counsel patients on the increased likelihood of subsequent THA. Careful patient selection and realistic expectation setting are essential.