bilateral long-leg spica cast, an orthopedic device of plaster of paris, fiberglass, or other casting material that encases and immobilizes the trunk cranially as far as the nipple line and both legs caudally as far as the toes. A horizontal crossbar to improve immobilization connects the parts of the cast encasing both legs at ankle level. It is used to aid the healing of fractures of the hip, the femur, the acetabulum, and the pelvis and to correct hip deformities. unilateral long-leg spica cast. Compare one-and-a-half spica cast, unilateral long-leg spica cast.
