. The principles and practice of surgery. Ilio-Femoral Ligament in its Natural First Position in the Method of Reduction by Manipulation. 332 DISLOCATIONS OF THE FEMUR. the risk of accidents, to lacerate the capsule and the adventitious struc-tures extensively. There is another objection to this extreme flexionwhich my own experience, and the experience of others, has demon-strated ; namely, that it is possible, in this way, to carry the head ofthe bone into the ischiatic notch, and even around the lower edge ofthe acetabulum into the foramen thyroideum. Usually when the thigh is fl
. The principles and practice of surgery. Ilio-Femoral Ligament in its Natural First Position in the Method of Reduction by Manipulation. 332 DISLOCATIONS OF THE FEMUR. the risk of accidents, to lacerate the capsule and the adventitious struc-tures extensively. There is another objection to this extreme flexionwhich my own experience, and the experience of others, has demon-strated ; namely, that it is possible, in this way, to carry the head ofthe bone into the ischiatic notch, and even around the lower edge ofthe acetabulum into the foramen thyroideum. Usually when the thigh is flexed to a right angle, or nearly to a rightangle, its progress in this direction is somewhat suddenly arrested; andthis point of resistance determines, in my opinion, the necessity ofchanging the direction. The head of the bone has now descended onthe dorsum of the ilium, and is resting against the abrupt inclinedplane near the upper and outer margin of the acetabulum, ready, atthe next step of the manipulation, to mount this plane and enterthe socket. Fig. 141.
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