HSS Ultrasound Case 69

Clinical History 53 year old male with hyperflexion injury to the knee 6 days prior.

The patient has had severe limitation to knee extension since the injury.

An ultrasound was requested for evaluation of the soft tissues.

Ultrasound of the Month – Case 69

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Ultrasound of the Month – Case 69

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Ultrasound of the Month – Case 69

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Ultrasound of the Month – Case 69

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Diagnosis Quadriceps tendon rupture

Discussion Quadriceps tendon rupture usually occurs during rapid contraction of the muscle while the knee is flexed.

Ultrasound is a useful imaging modality for diagnosing acute quadriceps ruptures, and its quicker exam time, cost-effectiveness, and lack of contraindications are advantages of ultrasound compared to MRI. In the acute phase, fluid associated with the injury will outline the torn tendon and increase the conspicuity of the tear.

In the chronic phase, the tear is often harder to detect due to the presence of scar tissue that may appear similar to tendon.

Ultrasound of the Month – Case 69

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