A spica cast is a hard covering over the waist, hips, and legs that
prevents movement of the hips. A bar between the legs keeps the cast strong and
an opening in the genital area allows normal urine and bowel elimination. A
spica cast may be used to keep the hip joint of a child with
developmental dysplasia of the hip (DDH) in the
position for normal growth.
Spica casts are usually made of plaster or fibreglass. Plaster casts
dry rapidly, but may feel damp for 24 to 48 hours. Fibreglass casts feel dry in
less than 30 minutes. See a picture of a
spica
cast
.
Spica casts are usually worn for 2 to 3 months and cannot be removed
during this time. The child's position needs to be changed every 2 hours to
relieve areas of pressure under the cast to prevent irritation or development
of sores. In addition, the child's feet should be observed for swelling, pain,
or a change in colour. The skin around the edges of the cast needs to be
inspected daily for irritation.
Plaster casts must be kept dry, but fibreglass casts can be washed
with a damp cloth if they are soiled. Clothing should be placed over the cast
to prevent small food particles or toys from getting inside the cast and
irritating the skin.