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Table 4 Summarised effect of wrist position on blood flow

From: Superselective angiography of the wrist in patients with Kienböck’s disease

P Wrist position
Flexion Extension Radialduction Ulnarduction
1 0 = r 0 = u
2 = i = i = i = i
3 = i = i = i = i
4 = r/i = r = i ↓ r
5 = r ↓ r/i = r/i ↓ i
6 ↓ u ↓ u = r = r
7 = i = r ↓ i 0
9 0 0 0 0
10 ↓ r/i ↓ i = i = i
12 = i ↓ i = i ↓ i
14 = i = i = i 0
  1. Only patients with available information for each wrist position are listed. For each position, the artery with the least impairment is shown. r: radial artery, u: ulnar artery, i: interosseous artery. 0: no blood flow visible, ↓: flow diminished compared to neutral position, =: unchanged to neutral position, −: no data available. P: patient number, F: in flexion, E: in extension, U: in ulnarduction, R: in radialduction. In seven of eleven patients marked in bold, the blood flow is maintained in any wrist position