R A Preiss1, S Patil, R M D Meek. 1. Department of Orthopaedics, Southern General Hospital, 1345 Govan Road, Glasgow G51 4TF, UK. aapreiss@doctors.org.uk
Abstract
BACKGROUND: The Zimmer-Explant system has made removal of a well-fixed monobloc acetabular component less challenging, but depends on the presence of an intact liner for instrument centralization. We report the outcome of 15 hips with well-fixed, cementless resurfacing sockets, which were removed using a modification of the existing method. We conclude that the existing Explant system combined with modular trial heads allows safe removal of monobloc shells with minimal bone loss. METHODS: Fifteen patients who underwent removal of a well-fixed, acetabular resurfacing component at the time of revision arthroplasty were identified from the unit's prospective arthroplasty database from 2005. RESULT: The final reamer used during reconstruction was only 1 or 2 mm larger than the outer diameter of the revised cup.
BACKGROUND: The Zimmer-Explant system has made removal of a well-fixed monobloc acetabular component less challenging, but depends on the presence of an intact liner for instrument centralization. We report the outcome of 15 hips with well-fixed, cementless resurfacing sockets, which were removed using a modification of the existing method. We conclude that the existing Explant system combined with modular trial heads allows safe removal of monobloc shells with minimal bone loss. METHODS: Fifteen patients who underwent removal of a well-fixed, acetabular resurfacing component at the time of revision arthroplasty were identified from the unit's prospective arthroplasty database from 2005. RESULT: The final reamer used during reconstruction was only 1 or 2 mm larger than the outer diameter of the revised cup.