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Orthopaedic Proceedings
Vol. 99-B, Issue SUPP_3 | Pages 116 - 116
1 Feb 2017
Fineberg S Harris M Tam J Lucas P Zelicof S
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Background

The transverse acetabular ligament (TAL) has been described as an anatomic landmark to guide in the positioning of the acetabular component during total hip arthroplasty. On plain films, the radiographic teardrop (RT) has similarly been utilized as a measure of appropriate cup positioning. The goal of this study is to quantify the distance and location between the anatomic TAL and RT landmarks to aid in the positioning of acetabular component.

Methods

Sixteen randomly selected cadaveric pelvises (eight male, eight female) underwent dissection. Radiographic markers were placed bilaterally at the anteromedial insertions of the TAL, and true anteroposterior (AP) pelvic radiographs of the cadavers were obtained. Distances between the markers and the lateral borders of the RT were measured.