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Dislocation of the trial femoral head is a rare and unpleasant event that can compromise the success of the total hip arthroplasty. A 62-year-old Caucasian woman with osteoarthritis was admitted to our Department and underwent an elective total hip arthroplasty. While performing the dislocation manoeuver the trial femoral head dissociated from the taper in the superior and anterior direction in the soft tissue and could not be retrieved immediately. The operation was then executed and finished in an ordinary manner. Three months after discharge from our department patient presented with the pain in the hip and groin and periprosthetic joint infection was diagnosed. The successful second operation for the retrieval of the dislocated trial femoral head was conducted through ilioinguinal approach. In this paper we reviewed the published literature and developed the algorithm for the decision-making while dealing with the dislocated and lost trial femoral head.

Dislocated trial femoral head during total hip arthroplasty: review of the literature and the new algorithm for treatment