Gluteal tendinopathy associated with poor 1-year outcomes after posterior THA
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Key takeaways:
- Patients with gluteal tendinopathy had worse 1-year outcomes after posterior THA vs. patients without tendinopathy.
- Surgeons should perform a thorough preoperative evaluation of hip symptoms and abduction.
According to published results, gluteal tendinopathy was commonly observed in patients undergoing total hip arthroplasty with the posterior approach and was associated with inferior patient-reported outcomes at 1 year after surgery.
Researchers prospectively analyzed a cohort of 1,538 consecutive patients (median age of 67 years) who underwent primary THA with a posterior approach for osteoarthritis between June 15, 2017, and Sept. 28, 2022.
Researchers assessed and graded gluteal tendinopathy at the time of surgery. According to the study, 1,023 patients (66%) were graded as normal; 337 patients (22%) were graded with tendinopathy but no tear; 131 patients (9%) were graded with a partial-thickness tear; and 47 patients (3%) were graded with a full-thickness tear. Researchers noted gluteal tendinopathy was associated with age, BMI and sex.
Patient-reported outcome measures were collected preoperatively at a 1-year postoperatively. These included the Oxford Hip Score (OHS) and Hip Disability and Osteoarthritis Outcome Score for Joint Replacement (HOOS JR).
Overall, researchers found no significant differences in baseline OHS or HOOS JR scores for any grade of gluteal tendinopathy. However, they found median 1-year OHS and HOOS JR scores decreased as gluteal tendinopathy grades worsened. Researchers noted this association was confirmed with linear regression analysis when controlling for age and sex.
“The results of this study suggest that patients who have tendinopathy or tear should be counselled to expect a less rapid recovery and an overall poorer functional outcome post-THA,” the researchers wrote in the study. “Consequently, we believe that a thorough evaluation of lateral hip symptoms and hip abduction strength before THA is essential in order to identify, investigate and counsel these patients,” they concluded.