Cementless femoral stem in arthroplasty for hip fracture: Early radiological subsidence at 3 months and predictive factor out of 117 cases

INTRODUCTION: Femoral neck fractures in the elderly require immediate postoperative weight bearing to preserve autonomy. Cementless stems rely on primary stability with close cortical contact. However, perioperative fracture may occur, and secondary subsidence remains a concern. The primary objective of this study was to assess early subsidence of a cementless femoral stem. Secondary objectives were to identify predictive factors for subsidence, dislocation, and perioperative fracture. MATERIAL AND METHODS: We conducted a retrospective study in patients over 65 years of age who underwent systematic implantation of an uncemented Avenir-Müller® stem. Epidemiological and radiological data were collected at 6 weeks and 3 months postoperatively. Subsidence was measured relative to the greater trochanter and expressed both as an absolute value and as a categorical variable (