title: Bilateral avulsion of quadriceps tendons in primary hyperparathyroidism.
abstract: Avulsion of the quadriceps tendons with primary hyperparathyroidism has been reported twice before. We describe a patient with primary type 1 hyperparathyroidism who developed well defined rheumatic symptoms in both knees as a consequence of bilateral rupture of the quadriceps tendons.
mesh_terms: D000328:Adult; D006801:Humans; D006961:Hyperparathyroidism / Q000150:complications*; D007717:Knee; D008297:Male; D012422:Rupture, Spontaneous; D013708:Tendon Injuries / Q000150:complications* / Q000175:diagnosis / Q000601:surgery