After a cast is applied the plaster immobilized part cannot be moved freely, other parts and joints can be moved.
The reason for casting is usually due to a localized fracture or dislocation of the joint. In order to limit movement, stabilize the joint and avoid dislocation, a cast is applied. If the plaster fixation site is moved randomly, it is likely to lead to loosening and dislocation of the plaster, affecting the effect of fixation, and in serious cases, it may cause the fracture to be dislocated again, affecting the healing.
Not only can’t the plaster fixed part move freely, but also need to elevate it to promote the venous return, which is also conducive to reduce the swelling. However, other parts and joints can be moved, which can avoid muscle atrophy.