History, treatment and analysis of a rare form of Exeter stem fracture.

The Exeter stem by Stryker has become one of the most successful and widely used stems in modern cemented hip arthroplasty. We present a case of a rare stem fracture which was treated by 'cement-in-cement' revision arthroplasty technique. The patient, an 87-year-old man, presented with left hip pain and an inability to weight bear following a cracking sensation when he was standing to dress himself. The patient denied history of fall or trauma. On examination he was noted to have a shortened externally rotated left lower limb without neurovascular compromise. On pelvic radiograph he was noted to have an incomplete stem fracture of his left-sided total hip replacement. He was treated with a cement-in-cement revision. Postoperatively the stem was sent for analysis in the London Implant Retrieval Centre. This is an example of a rare form of stem fatigue failure treated with a well-described technique in revision arthroplasty. © BMJ Publishing Group Limited 2019. No commercial re-use. See rights and permissions. Published by BMJ.