Risk Factors for Trochanteric Bursitis Following Total Hip Arthroplasty: A Radiographic Analysis

Area of Science:

• Orthopedic Surgery
• Arthroplasty Research
• Biomechanical Analysis

Background:

• Trochanteric bursitis (TB) is a common complication after total hip arthroplasty (THA).
• Increased prosthetic offset is a hypothesized risk factor for TB development.

Purpose of the Study:

• To investigate predictors of TB following THA.
• To examine the relationship between radiographic measurements of offset and leg length and TB risk.

Main Methods:

• Retrospective cohort study of 1,094 THA patients (2005-2021).
• Manual radiographic measurements of acetabular, femoral, and total offset, and leg length.
• Univariable and multivariable Cox proportional hazard models used to assess TB risk.

Main Results:

• 9.4% of patients developed TB.
• Female sex was associated with a 1.79 times increased risk of TB (HR: 1.79, P = .009).
• No significant association found between changes in offset or leg length and TB risk in univariate or multivariate analyses.

Conclusions:

• No relationship exists between femoral, acetabular, or total offset and TB after THA.
• Female patients represent a significant risk factor for TB post-THA.
• Surgeons may consider offset adjustments for stability, but routine use is not advised based on this retrospective data.