Mid-term results with an anatomic stemless shoulder prosthesis in patients with primary osteoarthritis.

1 , 2 , 3 There is a clear trend towards total shoulder arthroplasty (TSA). 4 , 5 The glenoid part is the most problematic area in TSA In the long term. 6 , 7 A loosening rate of up to 70% has been described, although most of these seem to be of little or no clinical significance. 2 , 8 With regard to the humerus, developments in prosthetic design have helped to restore the important anatomical parameters of the proximal glenohumeral joint.

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