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Kjaersgaard-Andersen, P. et al.

Heterotopic bone formation following total shoulder arthroplasty.

The incidence and location of heterotopic bone formation following total shoulder arthroplasty were evaluated in 58 Neer Mark-II total shoulder replacements. One year after surgery, 45% had developed some ectopic ossification. In six shoulders (10%) the ossifications roentgenographically bridged the glenohumeral and/or the glenoacromial space. There was no correlation between shoulder pain and the development of ossification. Shoulders with grade III heterotopic bone formation had a limited range of active elevation compared with shoulders without or with only a milder lesion. Men and patients with osteoarthritis of the shoulder joint were significantly disposed to the development of heterotopic bone. Heterotopic bone formation following total shoulder arthroplasty is frequent, but disabling heterotopic ossifications seem to be rare.[1]

References

Heterotopic bone formation following total shoulder arthroplasty. Kjaersgaard-Andersen, P., Frich, L.H., Søjbjerg, J.O., Sneppen, O. The Journal of arthroplasty. (1989) [Pubmed]

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