Foream
Pronation

Ulna
Level VIII

    14pt 18pt 22pt
Forearm pronation ulna 1
Forearm pronation ulna 2
Forearm pronation ulna 3
Forearm pronation ulna 4
Forearm pronation ulna 5
Forearm pronation ulna 6
Forearm pronation ulna 7
Forearm pronation ulna 8

Forbidden positions: 3, 4, 5.

Safe positions: 1, 2, 6, 7, 8, 9, 10, 11, 12.

Reference positions: 2, 6, 7, 8, 9, 10.

Reference positions with safe rotation: 6.

COMMENTS:

Only console transosseous elements can be used in the projection of positions 9, 10 and 11.
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 in the radiocarpal joints and forearm rotation.
Insertion of transosseous elements in the projection of positions 2, 7, 8, 9, and 10 will provide free flexion and extension in adjacent to the forearm joints, but will limit forearm rotation.
 

   

 

The transosseous elements recommended for use at the ulnar level VIII can be designated as: (VIII,2)VIII,2; VIII,6; VIII,7; VIII,8; VIII,8-2(VIII,8-2); VIII,8(VIII,8); VIII,9; VIII,10.