Mechanical Loosening of the Femoral Component in Total Hip Replacement, Brunswik Design

Abstract
Noninfected primary total hip replacements (161), Brunswik design, were examined clinically and radiographically. Mechanical loosening, defined as a radiolucent zone developing at the proximal, lateral part of the stem, occurred in almost 40% during the first few years after the operation where, after a steady state was reached. Stem loosening was more common in men and in patients with a previous femoral neck fracture and significantly related to improper cementing.