Differences between proximal bone remodeling in femoral revisions for aseptic loosening and periprosthetic fractures using the Wagner SL stem.

Background: Monoblock taper fluted stems have been reliably used to treat proximal femoral periprosthetic fractures (PFF) and femoral aseptic loosening (AL). Although proximal femoral remodeling has been observed around the Wagner Self-Locking (SL) stem, the exact characteristics of this process are yet to be established. Our aim was to compare the remodeling that takes place after femoral revisions for PFF and AL.

Modern Treatment of Recurrent Patellofemoral Instability - Combined Medial Patellofemoral Ligament Reconstruction and Tibial Tubercle Transfer.

PURPOSE OF THE STUDY The treatment of recurrent patellofemoral instability has undergone a paradigm change during the last 15 years. Instead of non-anatomical operations, the current concept favors the reconstruction of injured structures and the normalization of the biomechanical environment. Our aim was to briefly summarize the etiology, diagnostic regimen, and therapeutic decision making of this varied patient group and to review our own patients who underwent combined medial patellofemoral ligament reconstrucion and tibial tubercle transfer.

The DePuy Proxima™ short stem for total hip arthroplasty - Excellent outcome at a minimum of 7 years.

Purpose: Metaphyseal, proximally anchored uncemented stems for total hip arthroplasty provide bone preservation and decrease the incidence of proximal stress shielding and thigh pain. Our study investigated the clinical and radiological outcome of the DePuy Proxima™ short stem at a minimum of 7 years.

Methods: Eighty-one consecutive patients (86 procedures) under the age of 70 undergoing primary total hip replacement at two arthroplasty centres were enrolled.