A Comparison of Radiographic Acetabular Measurements in Elderly Patients with and without Osteoarthritis

This paper analyzed anatomical similarities and differences of the acetabulum between patients with hip OA, compared to patients without OA. Review of AP pelvic radiographs in patients with femoral neck fractures (patients with OA were excluded) and patients with OA of the hip scheduled for THA. No significant difference exists in AI or CE angle between the 2 groups, but patients without OA had a significantly higher DW ratio. Depth: Width CE angle ratio increased significantly with age in both the entire sample, and in the female-only subgroup. The study provides radiographic means to measure normal values which can serve as a possible reference point for proper prosthesis placement in total hip arthroplasty procedures and in hip fracture repair