A Unique Presentation of Scaphocapitate Syndrome With Extrusion Into the Carpal Tunnel: A Case Report.

Background: Scaphocapitate syndrome is a rare variety of perilunate instability, described as a trans-scaphoid, trans-capitate fracture, with rotation of the capitate head either 90° or 180°.

Methods: We present a unique case of scaphocapitate syndrome in which the rotated proximal capitate fragment expelled into the carpal canal.

Results: The capitate head was extricated from the carpal tunnel via the volar approach, and was anatomically aligned and fixed through the dorsal approach using two 2.

Risk factors for conversion surgery to total hip arthroplasty of a hemiarthroplasty performed for a femoral neck fracture.

Introduction: The purpose of this study was to determine risk factors for conversion to total hip arthroplasty (THA) in patients originally treated with hemiarthroplasty (HA) for displaced femoral neck fractures.

Methods: In this case-controlled study, we identified 54 patients who were treated with HA for femoral neck fracture (FNF) who subsequently underwent conversion to THA at our institution between 2003 and 2013. We randomly selected 142 control patients who underwent HA for a displaced FNF without conversion surgery during the same time period.