Discrepancy of Trial Rasp and Femoral Stem Relative Position Within the Femoral Canal of a Coated Tapered System: An Intraoperative, Intrapatient Controlled Study.

Background: For a successful total hip arthroplasty, the final position of the trial rasp should be adopted by the femoral stem to achieve correct positioning. This study aimed to characterize the discrepancy of the stem and rasp position of a widely used dual-tapered straight stem with rectangular cross section that is known to have an oversized stem with respect to the rasp.

Methods: The distances between the tip of the greater trochanter and the shoulder of the implant and rasp were measured on 39 intraoperatively acquired fluoroscopic image pairs.

Intra-articular versus periarticular acromioclavicular joint injection: a multicenter, prospective, randomized, controlled trial.

Purpose: The purpose of this randomized study was to compare the clinical efficacy of intra-articular versus periarticular acromioclavicular joint injections.

Methods: In this multicenter, prospective, randomized, controlled trial, 101 patients (106 shoulders) with symptomatic acromioclavicular joints were treated with an injection and were randomly assigned to either the intra-articular group or the periarticular group. To ensure accurate needle placement either intra-articularly or in a periarticular manner, the needle was placed under ultrasound guidance.

Two-stage cementless revision of late total hip arthroplasty infection using a premanufactured spacer.

We observed 44 patients with 2-stage revisions for septic hip prostheses. We used a uniform protocol consisting of the implantation of a preformed spacer (interval 12-26 weeks), specific systemic antibiotic therapies, and cementless total hip arthroplasty at time of reimplantation. The minimum follow-up was 36 months (mean, 67 months; range, 36-120 months).

Follow-up of a modular rotating hinge knee system in salvage revision total knee arthroplasty.

We evaluated the clinical and radiographic outcomes of salvage knee revisions using a modern-generation, modular, rotating hinge total knee prosthesis in 24 cases with a minimum follow-up of 36 months (mean, 56 months). Indications for revision included aseptic loosening, combined with bone loss and gross collateral ligament instability in all cases. Patients were evaluated clinically and radiographically (Knee Society scores).