Quadriceps tendon rupture

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	Quadriceps tendon rupture;
	MRI: Proton density Fat sat. ; Image courtesy of RadsWiki

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Contributors: Cafer Zorkun M.D., PhD.

Overview[edit | edit source]

Quadriceps tendon rupture is one of the major injuries. When it occurs the patella loses its anchoring support in the thigh. Without this anchoring effect of the intact quadriceps tendon, the patella tends to move inferiorly (towards the foot). Without the intact quadriceps tendon, the patient is unable to straighten the knee. If a rupture of the quadriceps tendon occurs, and the patient tries to stand up, the knee will usually buckle and give way because the body is no longer able to hold the knee in a position of extension (straight).

Causes of Quadriceps Tendon Degeneration[edit | edit source]

Diagnosis[edit | edit source]

The examination consists of palpating the quadriceps tendon and the patella. Usually, when the tendon ruptures, the patella moves downwards towards the knee. At the same time, the hole between the ends of the ruptured tendon is palpable on the front of the thigh, just above the knee. X-rays of the knee reveal the abnormal position of the patella, indicating a rupture of the quadriceps tendon.

Diagnostic Findings[edit | edit source]

Images courtesy of RadsWiki

Proton density
Proton density Fat sat

Additional Reading[edit | edit source]

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External Links[edit | edit source]

[http://goldminer.arrs.org/search.php?query=Quadriceps%20tendon%20rupture Goldminer: Quadriceps tendon rupt

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Quadriceps tendon rupture
MRI: Proton density Fat sat. Image courtesy of RadsWiki