6 doctors weighed in:
Knee injury seems related to patellar tendon rupture. Xray?
6 doctors weighed in

Dr. Kenneth Tepper
Orthopedic Surgery
4 doctors agree
In brief: Physical exam
An xray will not directly show a patellar tendon rupture, however, typically your knee cap will be further up your leg than normal.
The xray will also show if a piece of bone was pulled off of the patella or tibia. The diagnosis is made clinically - you cannot raise your leg straight up while keeping your knee straight. You may also feel a defect in the tendon.

In brief: Physical exam
An xray will not directly show a patellar tendon rupture, however, typically your knee cap will be further up your leg than normal.
The xray will also show if a piece of bone was pulled off of the patella or tibia. The diagnosis is made clinically - you cannot raise your leg straight up while keeping your knee straight. You may also feel a defect in the tendon.
Dr. Kenneth Tepper
Dr. Kenneth Tepper
Thank
Dr. Theodore Shybut
Sports Medicine
1 doctor agrees
In brief: Get one, yes
As mentioned the xray may indirectly suggest a patellar tendon rupture if the patella is abnormally high-riding (patella alta) and can also rule out avulsion fracture (pulled off bony fragment); the xray will also evaluate for fracture in the remainder of the knee; an ultrasound or MRI can visualize the tendon but usually not necessary due to inability to extend knee and palpable defect.

In brief: Get one, yes
As mentioned the xray may indirectly suggest a patellar tendon rupture if the patella is abnormally high-riding (patella alta) and can also rule out avulsion fracture (pulled off bony fragment); the xray will also evaluate for fracture in the remainder of the knee; an ultrasound or MRI can visualize the tendon but usually not necessary due to inability to extend knee and palpable defect.
Dr. Theodore Shybut
Dr. Theodore Shybut
Thank
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