Infectious Synovitis

infectious synovitis lesion of the toe join

Infectious Synovitis, also called Mycoplasma Synoviae Infection, MS Infection, Enlarged Hock Disease, Synovitis is an acute to chronic, systemic disease of chickens caused by infection with Mycoplasma synoviae (MS).

It affects the synovial membrane of joints and tendons leaving the chicken unable to walk properly. Chickens with infectious synovitis develop swollen, red, and warm hock joints. They are in so much pain it is difficult for them to walk. The synovial membranes of tendon sheaths become thickened, edematous, with fibrinous exudates accumulating within and around the tendon sheaths.

infectious synovitis of the hock joint



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