Radiographic measurement of the posterior femoral offset is not precise.

Purpose: The posterior femoral offset may significantly impact the final flexion range after total knee arthroplasty (TKA). The purpose of the present study was to compare a conventional, radiologic-based technique with an intra-operative, surgical navigation-based technique for the measurement of posterior femoral offset. The tested hypothesis was that the two measurement techniques produce different results both before and after TKA.

Medium-term comparison of results in obese patients and non-obese hip prostheses with Metha® short stem.

Introduction: Total hip arthroplasty is one of the most successful orthopedic surgeries in terms of results. However, the prevalence of obesity has nearly doubled between 1980 and 2008. There is limited and controversial data on hip replacement results in obese patients.

The intra- and inter-observer reliability of the CT-scan based X index to quantify glenoid bone loss in chronic anterior shoulder instability and its impact on decision making.

Purpose: The X index is a measure of the antero-inferior glenoid bone loss on unilateral 2D CT-scans in the preoperative analysis of chronic anterior shoulder instability. Recurrence rate was shown to be higher after stabilization surgery if X index is superior or equal to 0.4.