[Feasibility study on measuring anteversion angle of acetabular prosthesis after total hip arthroplasty using...

Area of Science:

• Orthopedic surgery
• Radiology
• Biomedical engineering

Context:

• Accurate measurement of acetabular prosthesis anteversion is crucial for successful total hip arthroplasty (THA) outcomes.
• Conventional methods may have limitations in reproducibility and accessibility.
• Pelvic X-ray films are a common imaging modality post-THA.

Purpose:

• To evaluate the reliability and accuracy of the arbitrary point method for measuring acetabular prosthesis anteversion angle.
• To compare the arbitrary point method with CT-based measurements.
• To assess the reproducibility of the arbitrary point method among different physicians.

Summary:

• A retrospective analysis of 23 patients (25 hips) undergoing THA was conducted.
• Acetabular anteversion angles measured by the arbitrary point method (15.87±7.73°) and CT (15.31±7.89°) showed no significant difference (P=0.143).
• The arbitrary point method exhibited high intraclass correlation coefficients (ICCs) for inter-physician reliability (0.96-0.97), comparable to CT (0.93-0.94).

Impact:

• The arbitrary point method offers a simple, accurate, and highly reproducible approach for assessing acetabular prosthesis anteversion using standard pelvic X-rays.
• This technique can enhance post-operative evaluation and potentially improve patient outcomes in THA.
• Facilitates reliable anteversion measurement in routine clinical practice.