37. The reduction does not differ from that of the radius (31), except
in this, that the assistant who makes the extension, must place the
hand in the opposite state, namely, that of abduction, in order that
the fragments may be brought into contact, while the surgeon assists
in this process, by pushing the broken ends of the bone in a direction
opposite to that of their displacement.
As in the foregoing case, three splints are sufficient for the
apparatus, where the radius, being unbroken, performs the office of a
fourth.
The exercise of the limb, after the consolidation of the bone, is in
general less necessary here, than in fractures of the radius (34),
because the ulna, being an immoveable point of support for the motions
of rotation, concurs in them only in a passive manner.