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The hip should never he held in a position of tension, especially extension, abduction, and internal rotation, as this wrings out the blood vessels along the neck and still further embarrasses the circulation.No operation should be done when acute pain and spasm are present, at least until after two or three weeks of bed rest. The treatment of choice is pegging of the epiphysis in the preslipping stage or before much slipping has occurred. The results of this operation have been excellent, and far better than with any of the other methods of treatment. Drilling without pegging has little or no effect on the course of the disease. Even the slipped epiphysis can be pegged, and the deformity can be corrected later by subtrochanteric osteotomy.