Shoulder arthritis – many different types

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Shoulder joint replacement – many different types of arthritis

Degenerative Joint Disease

Degenerative joint disease is also known as osteoarthritis, osteoarthrosis or wear and tear arthritis. The pathogenesis of this condition results from the age-related loss of the ability of articular cartilage to sustain itself against seemingly minor mechanical imbalances and years of use. Degenerative joint disease typically affects healthy and active individuals. In our practice, most patients with degenerative glenohumeral degenerative joint disease are of Northern European ancestry in contrast to those of Asian, Southern European, Hispanic and African ancestry. In degenerative joint disease the glenoid cartilage and subchondral bone are progressively lost – either concentrically medially (more characteristic of female shoulders and those with inflammatory arthritis) or eccentrically posteriorly, with the articular cartilage often left intact anteriorly (more characteristic of male shoulders and those with degenerative joint disease or capsulorrhaphy arthropathy). The concern with the eccentric wear pattern is that the diminished articular contact area results in increased force/unit area leading to increased posterior wear which in turn leads to even less contact area. The cartilage of the humeral head is eroded in a Friar Tuck pattern of central baldness, often surrounded by a rim of remaining cartilage and osteophytes

Shoulder arthritis – many different types

— Dr Frederick Matsen (@shoulderarth) junio 3, 2015