Thenar Hammer Syndrome
| Classification according to ICD-10 | |
|---|---|
| I73.9 | Peripheral vascular disease, unspecified |
| ICD-10 online (WHO version 2019) | |
The thenar hammer syndrome (DBS) is an arterial circulatory disorder of the hand caused by one-time or repeated blunt force applied to the ball of the thumb, the so-called thenar . The arteria radialis or the arcus palmaris superficialis is injured by the force .
The syndrome mostly occurs in craftsmen who use their hand like a striking tool. The thenar area is used as a substitute for a hammer , so to speak .
Symptoms
Typical symptoms of thenar hammer syndrome are numbness, weakness, feeling cold and pain in the affected hand. Clinically, it appears as a (secondary) Raynaud's phenomenon . These symptoms may not appear until days, weeks, or months after the triggering event. In many cases, however, those affected have little or no discomfort because the finger blood vessels are supplied with the uninjured ulnar artery through anastomoses . DBS is therefore an extremely rare clinical picture and is even rarer than the analogous disease Hypothenar-Hammer Syndrome . Only about 20 cases of the disease have been published worldwide.
DBS as an occupational disease
According to the recommendations of the medical expert advisory board for "occupational diseases" at the Federal Ministry of Labor and Social Affairs , with the third ordinance amending the occupational diseases ordinance of December 22, 2014, the thenar hammer syndrome as well as the hypothenar hammer syndrome were added to the official list of Occupational diseases included. It is listed there under the BK number 2114 as "Vascular damage to the hand due to the impact of force". The illness can therefore be recognized as an occupational accident or occupational disease according to SGB VII § 9, paragraph 1 , if it has arisen through professional activity .
Individual evidence
- ↑ Recommendation of the Medical Advisory Board “Occupational Diseases”, BMAS announcement of May 1, 2012, GMBl. 2012, p. 449.
