Two cases of tendon rupture on chronic haemodialysis were reported. The rupture occurred spontaneously without any special strain. In one case, a brachial triceps tendon was ruptured and in one case a quadriceps tendon was ruptured.
Radiological findings showed that in both cases, a flake of bone that avulsed with the tendon from the olecranon or the patella was seen. Laboratory findings showed that in both cases, the high levels of alkaline phosphotase and PTH confirm the existence of severe secondary hyperparathyroidism.
The ruptured tendons were repaired and we obtained satisfactory results. Pathophisiological mechanisms of tendon rupture in chronic haemodialysed patient remain to be answered, however, secondary hyperparathyroidism is suggested as one of factors of tendon rupture. In both cases, parathyroidectomy was carried out after the episode of tendon rupture.
