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Patient-Reported Outcomes Measurement Information System Correlates With Modified Harris Hip Score in Total Hip
Insights
The Patient-Reported Outcomes Measurement Information System (PROMIS) Pain Interference and Physical Function CATs correlate well with the modified Harris Hip Score (mHHS) for assessing total hip arthroplasty outcomes. These PROMIS CATs offer a comparable alternative to mHHS in evaluating THA success.
Area of Science:
- Orthopedics
- Arthroplasty
- Patient-Reported Outcome Measures
Background:
- The modified Harris Hip Score (mHHS) is a standard for assessing total hip arthroplasty (THA) outcomes.
- The Patient-Reported Outcomes Measurement Information System (PROMIS) offers validated, computer adaptive testing (CAT) for global health assessment.
Purpose of the Study:
- To evaluate the correlation between PROMIS Pain Interference and Physical Function CATs and the mHHS in primary THA patients.
- To determine if PROMIS CATs can serve as a comparable outcome measure to mHHS post-THA.
Main Methods:
- Prospective enrollment of 48 patients undergoing primary THA by dedicated joint surgeons.
- Collection of PROMIS and mHHS data preoperatively and at 3, 6, 12, and 52 weeks postoperatively.
- Statistical analysis using descriptive statistics and Pearson correlation coefficients.
Main Results:
- Preoperatively, a moderate correlation (r=0.56) was found between PROMIS scores and mHHS.
- Postoperatively, PROMIS scores and mHHS showed significant improvement from baseline (P<.01).
- A strong and consistent correlation (r=0.73-0.80) was observed between PROMIS and mHHS postoperatively (P<.0001).
Conclusions:
- PROMIS Pain Interference and Physical Function CATs effectively assess pain and function in THA patients.
- Combined PROMIS CATs demonstrate comparability to mHHS in evaluating outcomes after THA for osteoarthritis.
- PROMIS offers a valuable, validated tool for assessing THA outcomes.
Abstract:
The modified Harris Hip Score (mHHS) is a validated and disease-specific instrument commonly used to assess outcomes in total hip arthroplasty (THA). The Patient-Reported Outcomes Measurement Information System (PROMIS) is a validated, computer adaptive testing (CAT)-based global health assessment tool. The authors' goal was to examine the correlation between PROMIS Pain Interference and Physical Function CATs and the mHHS in patients undergoing primary THA. All THAs were performed by 1 of 2 fellowship-trained dedicated total joint surgeons at 1 academic institution. Patients completed PROMIS and mHHS assessments preoperatively and at 3, 6, 12, and 52 weeks postoperatively. Descriptive statistics and Pearson correlation values were determined. A total of 48 patients were prospectively enrolled in the study. Preoperatively, mean total PROMIS score (Pain Interference and Physical Function) was 74.2 and mHHS was 50.8. Preoperatively, mean total PROMIS score showed a moderate correlation (r=0.56; P<.0001) with total mHHS. Postoperatively, mean total PROMIS score at 3, 6, 12, and 52 weeks was 82.4, 93.4, 100, and 100, respectively (all P<.01 vs baseline), and mHHS was 68.2, 81.1, 85.9, and 88.6, respectively (all P<.01). At 3, 6, 12, and 52 weeks postoperatively, a strong and consistent correlation was observed between the total PROMIS score and mHHS (r=0.74, 0.74, 0.73, and 0.80, respectively; all P<.0001). The PROMIS Pain Interference and Physical Function CATs accurately assessed preoperative pain and dysfunction, as well as clinical improvement following THA. Combined PROMIS Pain Interference and Physical Function is comparable to the mHHS when assessing outcome following THA for osteoarthritis. [Orthopedics. 2021;44(1):e19-e25.].
