Accuracy of placement of the glenoid component in reversed shoulder arthroplasty with and without navigation.

Hypothesis: Navigation can improve accuracy of placement of the glenoid component in reversed shoulder arthroplasty.

Material And Methods: A glenoid component of a reversed shoulder prosthesis was implanted in 14 paired scapulohumeral cadaver specimens. Seven procedures with standard instrumentation were compared with 7 procedures using navigation.

Lateral epicondylitis in tennis: update on aetiology, biomechanics and treatment.

Lateral epicondylitis (tennis elbow) is the most frequent type of myotendinosis and can be responsible for substantial pain and loss of function of the affected limb. Tennis biomechanics, player characteristics and equipment are important in preventing the condition. This article presents an overview of the current knowledge on lateral epicondylitis, and focuses on treatment strategies.