**6.2 Ultrasonography**

Ultrasound and MRI is the main modality of investigation for jumper's knee. Although CT scan can image patellar tendon, it does not offer any significant advantage over the above mentioned investigations. However studies have shown CT scan to be of some prognostic value [30, 31].

Role of ultrasound:


Ultrasonographic appearance:

Patellar tendons in patients suffering from jumper's knee have decreased echogenicity, containing either a sonolucent region or diffuse hypoechogenicity [31–33]. The tendon envelope is irregular, and there may be erosion of patellar tip and intratendinous calcification may be present.
