Acta Orthopaedica et Traumatologica Turcica
Case Reports

Trunnion fracture of a cobalt–chrome fully porous-coated femoral stem: A case report


Department of Orthopedics and Traumatology, Osmangazi University, School of Medicine, Eskişehir, Turkey

AOTT 2022; 56: 408-411
DOI: 10.5152/j.aott.2022.22051
Read: 143 Downloads: 60 Published: 01 November 2022

Modular femoral stem-head systems are used increasingly due to their ease of application and offset adjustment. However, this modularity has brought complications of trunnion wear and breakage. Although very rarely encountered, trunnion fracture is a catastrophic complication that requires challenging revision surgery. This report presents a trunnion fracture of a cobalt-chrome alloy, fully porous-coated femoral stem. Following single-stage revision surgery, full weight-bearing was achieved in six weeks, and the patient was painlessly mobile with a single cane and had a Hip Score of 81 in the last follow-up. Despite all the advantages of the femoral stem and head modularity, one should remember that a catastrophic complication such as trunnion wear and fracture that require revision surgery is possible.

Cite this article as: Kavak M, Turgut A. Trunnion fracture of a cobalt–chrome fully porous-coated femoral stem: a case report. Acta Orthop Traumatol Turc., 2022;56(6):408-411.

ISSN 1017-995X EISSN 2589-1294