Designs Of Prosthetic Implants For Total Shoulder Arthroplasty

Front 1

Unconstrained

Back 1

Anatomical design with a small, shallow glenoidcomponent combined with a stemmed humeral component

Front 2

Unconstrained

Back 2

The most frequently used prosthetic design

Front 3

Unconstrained

Back 3

Provides the greatest freedom of shoulder motion but no inherent stability

Front 4

Unconstrained

Back 4

Indicated when the rotator cuff mechanism is intact or can be repaired to provide dynamic stability to the GH joint

Front 5

Semiconstrained

Back 5

A larger glenoid component that is hooded or cup-shaped

Front 6

Semiconstrained

Back 6

Some degree of joint stability inherent in the design

Front 7

Semiconstrained

Back 7

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

Front 8

Reversed Ball and Socket

Back 8

Small humeral socket that slides on a larger ball-shapedglenoid component

Front 9

Reversed Ball and Socket

Back 9

Couples some degree of stability with mobility for rotatorcuff-deficient shoulders that cannot be repaired

Front 10

Reversed Ball and Socket

Back 10

Provides an alternative to standard, semiconstrained totalshoulder arthroplasty (TSA) and hemiarthroplasty

Front 11

Constrained

Back 11

Fixed fulcrum, ball-in-socket designs with congruency ofthe glenoid and humeral components

Front 12

Constrained

Back 12

Greatest amount of inherent joint stability but less mobilitythan less constrained designs

Front 13

Constrained

Back 13

Once thought to be an alternative to hemiarthroplasty forthe selected patient with a deficient rotator cuff or cuff teararthropathy or chronic/recurrent GH joint dislocation aftera previous TSR

Front 14

Constrained

Back 14

Rarely used today owing to high rate of loosening or failureof the components