Figure 2From: A systematic review of the etiopathogenesis of Kienböck's disease and a critical appraisal of its recognition as an occupational disease related to hand-arm vibration 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.Back to article page