Laser etching causing fatigue fracture at the neck-shoulder junction of an uncemented femoral stem: A case report.
作者信息
Jang Bob, Kanawati Andrew, Brazil Declan, Bruce Warwick
机构信息
Department of Orthopaedic Surgery, Concord Hospital, New South Wales, Australia.
Signature Orthopaedics Australia, Chatswood, New South Wales, Australia.
出版信息
J Orthop. 2013 May 24;10(2):95-8. doi: 10.1016/j.jor.2013.04.007. eCollection 2013.
Abstract
Fatigue fracture of a femoral component in total hip arthroplasty is a rare occurrence but well documented in the literature. It is understood that proximal loosing of a femoral stem with a well fixed stem distally will result in cantilever bending and eventual fatigue fracture of the stem. Other factors which may potentiate a fatigue fracture are material design, implant positioning, and patient characteristics. More recently, laser etching on the femoral neck of an implant has resulted in fatigue fracture. We report a case of a fatigue fracture at the neck-shoulder junction in a well fixed, uncemented, femoral component due to laser etching in the region of high tensile stress.
摘要
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