Shoulder arthroplasty is a surgical procedure used to relieve the pain and loss of joint mobility associated with arthritis. These conditions involve loss of joint cartilage, and wearing of the bone, causing restricted mobility and pain. The procedure involves exposure of the shoulder joint and removal of the damaged or arthritic parts of the humerus and glenoid cavity. The glenoid cavity is resurfaced with a polyethylene prosthesis. A channel is created in the humerus bone to hold the stem of the metal prosthetic. This stem is impacted onto the humerus bone, anchoring the prosthesis. A metal head is attached to the stem. Contact of this porous metal with the bone stimulates osseointegration, forming a strong, direct bone implant interface, without the need for cement. This operation results in pain relief of the shoulder joint.
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