Snapping triceps syndrome

Case contributed by Dr Maulik S Patel

Presentation

Post-traumatic right elbow pain on medial aspect for last few days.

Patient Data

Age: 50 years
Gender: Male
Ultrasound

With elbow extension, the ulnar nerve is anterior to the medial epicondyle of the humerus. Nerve shows normal caliber and echopattern. With elbow flexion, ulnar nerve moves more anteriorly to the medial epicondyle. There is also triceps muscle dislocation anterior to the medial epicondyle of the humerus with the elbow flexion. Snapping could be felt due to triceps dislocation with elbow flexion.

There is no elbow effusion. Common flexure tendon, common extensor tendon, biceps distal tendon, medial ( ulnar ) collateral ligament show normal echopattern.

 

Case Discussion

Adult male presented with medial elbow trauma with pain. Ultrasound shows ulnar nerve anterior to the medial epicondyle of the humerus with elbow extension meaning dislocated ulnar nerve. With elbow flexion, there is triceps dislocation anterior to the medial epicondyle of the humerus. Only one 'snap' could be felt that was due to triceps dislocation. Patient's symptoms were not related to snapping of triceps. Rest of the elbow ultrasound examination was normal.

The case is an asymptomatic/unrecognized snapping triceps syndrome.

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Case information

rID: 57263
Published: 15th Dec 2017
Last edited: 14th Aug 2019
Inclusion in quiz mode: Excluded

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