[Spontaneous and simultaneous rupture of the right patellar ligament and avulsion fracture of the left tibial tuberosity in osteomalacia].

Bilateral simultaneous and spontaneous patellar tendon ruptures are exceedingly rare. The diagnosis is established by clinical examination. Early diagnosis and surgical repair is essential to provide a satisfactory functional result. A case of patella tendon rupture on the right side and a fracture of the tuberositas tibiae on the other one after minor trauma in an 31-year-old woman with osteomalacia is presented. In case of spontaneous and bilateral tendon ruptures other diseases, especially generalized bone diseases, systemic lupus erythematodes, metabolic diseases and rheumatoid arthritis should be excluded.