Mid-Term to Long-Term Follow-Up of Stemless Anatomic Total Shoulder Arthroplasty.

Background: The purpose was to report mid-term to long-term clinical outcomes in a multicentre series of patients who received stemless total shoulder arthroplasty (TSA). The hypothesis was that stemless TSA would be a safe and effective treatment with satisfactory clinical outcomes.

Methods: Authors retrospectively reviewed records of 62 stemless TSAs implanted between March 2013 and December 2014.

Optimization of the posterior condylar offset, tibial slope, and condylar roll-back in total knee arthroplasty.

Total knee arthroplasty does not restore the full range of motion of the knee. Retrospective clinical studies on knee kinematics suffer from multiple biases because the various parameters involved, that is, the posterior condylar offset, the tibial slope, and the condylar roll-back, are not individualized. The present study, based on the geometry of knee flexion, shows that a 3-mm decrease of the posterior condylar offset could reduce knee flexion by 10 degrees before the occurrence of tibiofemoral impingement.