<unk>  can usually be diagnosed by physical examination. The most common signs are: tenderness, the<unk> 's loss of tone, loss of ability to raise the straight leg and observation of the high-riding<unk>  Radiographically,<unk> alta can be detected using the Insall and Salvati method when the<unk> is shorter than its<unk> . Partial tears may be visualized using MRI scans.
Patellar tendon rupture
Patella fracture
Retrocalcaneal bursitis
Quadriceps tendon rupture
Iliotibial band syndrome
Strain (injury)
Biceps tendon rupture
Patellar dislocation