term1 Definition1term2 Definition2term3 Definition3
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Unconstrained
Anatomical design with a small, shallow glenoidcomponent combined with a stemmed humeral component
The most frequently used prosthetic design
Provides the greatest freedom of shoulder motion but no inherent stability
Indicated when the rotator cuff mechanism is intact or can be repaired to provide dynamic stability to the GH joint
Semiconstrained
A larger glenoid component that is hooded or cup-shaped
Some degree of joint stability inherent in the design
Indicated when erosion of the glenoid fossa can be compensated for by reaming the fossa and rotator cufffunction; although deficient preoperatively, can beimproved by repair
Reversed Ball and Socket
Small humeral socket that slides on a larger ball-shapedglenoid component
Couples some degree of stability with mobility for rotatorcuff-deficient shoulders that cannot be repaired
Provides an alternative to standard, semiconstrained totalshoulder arthroplasty (TSA) and hemiarthroplasty
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