Where one fragment is acted upon by powerful muscles, a rotatory displacement may take place, as in fracture of the radius above the insertion of the pronator teres, or of the femur just below the small trochanter.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson
The splints are applied with the elbow flexed to a right angle, and, except when the radius is broken above the level of the insertion of the pronator teres, with the forearm midway between pronation and supination.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson
The subclavius muscle, E, like the pronator quadratus muscle of the forearm, serves rather to further the displacement of the broken ends of the bone than to hold them in situ.
"Surgical Anatomy"
Joseph Maclise