Defining the Maximum Outcome Improvement of Various Scores in Hip Arthroscopy for Femoroacetabular Impingement Syndrome and Labral Tear
Authors: Maldonado DR, Kyin C, Shapira J, Rosinsky PJ, Meghpara MB, Ankem HK, Lall AC, Domb BG
DOI: 10.1016/j.arthro.2021.01.002
Background
Hip arthroscopy is widely performed for femoroacetabular impingement syndrome (FAI) and labral tears. Establishing the minimal degree of improvement in key outcome measures linked to patient satisfaction is critical to assess treatment success.
Methods
The study retrospectively analyzed patients undergoing hip arthroscopy, evaluating outcome scores including Harris Hip Score (HHS), Nonarthritic Hip Score (NAHS), Visual Analog Scale (VAS) for pain, and International Hip Outcome Tool-12 (iHOT-12). The minimum percentage improvement correlating with patient satisfaction was calculated.
Key Findings
Minimal clinically important improvements of approximately 52-56% across the evaluated scores predicted patient satisfaction following surgery.
Conclusions
Defining thresholds for maximal outcome improvement helps surgeons interpret postoperative results and manage patient expectations. Preoperative factors predicting achievement of these improvements remain unclear.
What Does This Mean for Providers?
Providers can use these defined improvement benchmarks to objectively evaluate surgical success and counsel patients realistically regarding expected postoperative functional gains and pain relief. These thresholds can guide clinical decision-making and set measurable goals for rehabilitation.