Figure 2.

Illustration of the frequency of discussed etiopathological factors in literature in 153 reviewed articles. The four most frequently discussed hypotheses are marked in blue (negative ulnar variance), red (primary arterial ischemia), green (trauma) and purple (hand-arm vibration exposure); all other hypotheses are marked in yellow.

Stahl et al. BMC Musculoskeletal Disorders 2012 13:225   doi:10.1186/1471-2474-13-225
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