After the developmental hip dislocation (DDH) closed reset plaster pants are fixed, related instructions and precautions: 1, pay attention to keep the child in a dry and cool environment to avoid excessive sweating, especially in hot and humid areas; 2, the outer layer of plaster is polymer resin material can be waterproof, but the inner layer of socks and cotton lining of plaster pants is not waterproof, if not properly managed, the child urinates when wetting the plaster The inner liner can easily lead to skin eczema. Therefore, the diaper must be stuffed into the plaster pants, supine in front (perineum), prone in the back (buttocks), choose a narrow diaper or pad, you can use an elastic soft ruler to help stuff it; 3, supine padding double calves to let the trunk flat, to avoid the child’s lumbosacral discomfort due to the natural sagging of the lower limbs after the plaster pants are fixed; 4, for the hip joint, the hip joint needs to be flexed enough after reset (flexion of the hip Therefore, after the plaster pants are fixed, the child’s body is upright and the hip is sunken to help maintain the hip flexion angle; similarly, when holding the child, let the child stand upright and avoid reaching under the plaster pants to hold the child’s buttocks to avoid reducing the hip flexion angle; 5. Therefore, mild “micro-movement” of the hip joint is acceptable after resetting, so don’t be too nervous, but try to avoid letting the child stand; 6, the cast often shows “asymmetry on both sides”, mainly because the child 7, the edge of the cast or the surface of the rough places that may lead to skin abrasion of the child can be pasted with medical plaster; 8, pay attention to avoid the child to put toys and other foreign objects into the cast pants.