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Forbidden positions: 2, 3, 4.
Safe positions: 1, 5, 6, 7, 8, 9, 10, 11, 12.
Reference positions: 1, 5, 6, 7, 8, 9, 10.
Reference positions with safe rotation: 6.
COMMENTS:
Only console transosseous elements can be used in the projection of positions 8,9 and 10.
The application of position 6 is optimal at this level, because in this case the transosseous elements will minimally stand in the way of soft tissue displacement relative to the ulna while motions in the elbow and radiocarpal joints and forearm rotation.
Insertion of transosseous elements in the projection of positions 1,5,7,8,9, and 10 will limit forearm rotation.
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The transosseous elements recommended for use at the ulnar level V can be designated as: (V,1)V,1; V,5; V,6; V,7; V,7-1(V,7-1); V,7(V,7); V,8; V,9; V,10.
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