P199 - Femoral Retroversion Does not Portend Inferior Mid-Term Outcomes After Hip Arthroscopy: A Pair-Matched Controlled Cohort Analysis
Abstract
Purpose
To report mid-term five-year outcomes of arthroscopic treatment of hip abnormalities in patients with femoral retroversion compared to a control group of patients with normal femoral anteversion.
Methods and Materials
Data was prospectively collected and retrospectively reviewed for all patients who underwent hip arthroscopy between May 2008 and March 2013. Institutional Review Board approval was obtained prior to data collection. Patients were included in analysis if they underwent hip arthroscopy during this period and had femoral version ≤0° calculated using magnetic resonance imaging. Exclusion criteria included prior ipsilateral hip conditions/surgeries or Tönnis grade>1. These patients were pair-matched with patients having femoral anteversion between 10-20° based on gender, body mass index ±10 kg/m2, and age ±10 years. Outcomes were collected at three months and one year postoperatively and annually thereafter, including modified Harris Hip Score (mHHS), Non-Arthritic Hip Score (NAHS), Hip Outcome Score–Sports Specific Subscale, Visual Analog Scale (VAS) for pain, International Hip Outcome Tool (iHOT-12), Veterans RAND health survey (VR-12), Short Form health survey (SF-12).
Results
A total of 59 patients were identified as our experimental group out of 69 eligible for inclusion (86%). These patients demonstrated significant improvement from their preoperative state in all PRO and VAS scores (P<.001). No differences were noted between retroverted and control patients in any of the outcome measures collected, in pain or satisfaction ratings, or in the frequency of or duration to secondary surgeries (P>0.05).
Conclusion
Patients with femoral retroversion demonstrated favorable outcomes at minimum five-year follow-up after undergoing arthroscopic hip surgery. These outcomes were not inferior to those of patients with normal femoral version. While femoral retroversion should not be considered a contraindication to hip arthroscopy, it should be carefully considered as a factor in patient selection and surgical planning.
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