Dissociation of Implant following Hemi Replacement Arthroplasty in an Osteoporotic Male Patient: A Case Report

Abstract

Hip fracture is a major health concern in elderly people. Thc standard line of management is hip arthroplasty
classified whether it is intracapsular or extracapsular. Hemi arthroplasty is the preferred surgery in geriatric
population as less mobility and the large diameter of the femur head reduces the chances of dislocation. There
are 4 surgical techniques for Hemi -arthroplasty: anterior (Smith-Peterson), anterolateral (Watson. lones), lateral
(Hardinge or Liverpool) and posterior (moore). Common complications of hip replacement include infection,
fracture, dislocation, venous thrombosis, nerve palsy, chronic pain and implant failure. ln literature: there are
very few reported cases of Dissociation of the Implant in hemi arthroplasty. We hereby present a case report on
dissociation of prosthesis which was timely recognised and treated adequately. The cemented bipolar prosthesis
used can also lead to dissociation of the implant components and thereby the need for open reduction. Identification
of the difference between dislocation of head and dissociation of the prosthetic componcnts is vital for favourable
patient prognosis.