[Spontaneous tendon ruptures of identified etiology (author's transl)].

The authors found in the material of the National Institute of Traumatology among the 650 cases of spontaneous tendon ruptures seven cases of rupture, when an identified disease localized on the tendon was the precipitating cause. Aetiology of the rupture has been as follows: tendon tuberculosis, rheumatic tendinitis xantoma tuberosum, haemangioma and pseudocyst of the tendon. In two other cases muscle biopsy revealed a concealed myopathy (central core disease and centronuclear myopathy) that may responsible for the rupture of the tendon.