Deformation of acetabular press-fit cups: Influence of design and surgical factors

Thin-walled cups achieved higher fixation strengths and might be more bone-preserving. However, in combination with screw holes and high press-fit levels, wall thickness should be considered carefully to avoid excessive cup deformations leading to potential complications during liner assembly. Line-to-line insertion of thin-walled cups should be accompanied with a rough surface coating to minimize the loss of fixation strength due to the low press-fit fixation.

Source: Clinical Biomechanics - July 12, 2019 Category: Orthopaedics Authors: Philipp Messer-Hannemann, Graeme M. Campbell, Michael M. Morlock Source Type: research