Roturas espontáneas del tendón cuadricipital

Spontaneous quadriceps tendon rupture has been reported most often in association with metabolic chronic diseases. Rupture is accustomed to be unilateral and in rare bilateral occasions. Two cases report with a bilateral ruptures, both of them are associated with chronic renal failure, and review of the literature are presented. Diagnosis is made fundamentally for the clinic of sudden pain, consecutive from inability for the extension of the knee and palpable defect through the patella. X-ray study only contributes ratable data in case. Sonography confirmed the lesion in both cases, but in informed wrong of the extension of the lesion. Both cases were solved with surgical treatment.