Hypothenar Hammer Syndrome
Hypothenar hammer syndrome is caused by blunt repetitive injury to the ulnar artery and superficial palmar arch from impact against the hamulus. Palmar arches and digital arteries also may be occluded.
Intimal hyperplasia is almost invariably present. Arterial wall damage may lead to aneurysm formation with or without vessel thrombosis and to microemboli formation and compression of the sensory branch of the ulnar nerve.
The diagnosis can be confirmed easily with Doppler ultrasound. However, CT angiography, or MR angiography is for precise vascular mapping. [ Article ]
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