Quadriceps tendon rupture is usually associated with forced flexion of the knee or a direct blow, although spontaneous ruptures are reported.
Predisposing illnesses include:
- connective tissue disorders
- renal impairment
- corticosteroid use
Most ruptures are thought to occur at or around the osseotendinous junction at the superior pole of the patella .
- systemischer Lupus Erythematodes
- extensor mechanism of the knee injuries
- Tendinose der Quadrizepssehne