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Hypothenar hammer syndrome
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Hypothenar hammer syndrome

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Contributors: Benjamin L. Mazer MD, MBA
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Synopsis

Hypothenar hammer syndrome is a chronic injury to the ulnar artery due to repetitive use or trauma around the hypothenar eminence. This repetitive injury causes scarring and compression of the ulnar artery. Thrombosis of the ulnar artery is a common complication, leading to distal ischemia. Presenting symptoms include a tender mass on the ulnar side of the hand, numbness or paresthesias in an ulnar distribution, grip weakness, atrophy of the hypothenar muscles, and necrosis of the fingertips. Symptoms sometimes improve over time as collateral circulation develops.

There is no clear treatment protocol for hypothenar hammer syndrome. Conservative treatments include calcium channel blockers and hand warming. Vascular surgical interventions are sometimes utilized.

Codes

ICD10CM:
I73.89 – Other specified peripheral vascular diseases

SNOMEDCT:
444744001 – Hypothenar hammer syndrome

Differential Diagnosis & Pitfalls

Best Tests

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References

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Last Updated: 05/27/2016
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Hypothenar hammer syndrome
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Hypothenar hammer syndrome : Hand pain, Numbness, Wrist pain, Cold sensitivity, Paresthesias
Copyright © 2019 VisualDx®. All rights reserved.