American Board of Surgical Assistants (ABSA) Orthopedic Practice Test

The most suitable method for immobilizing a metacarpal fracture is the use of a plaster cast that encompasses both the forearm and hand, along with an incorporated metal finger splint. This approach provides comprehensive stabilization to the fractured metacarpal, preventing movement at the fracture site, which is crucial for proper healing. By immobilizing the entire hand and forearm, this method helps in maintaining alignment and reduces the risk of complications such as malunion or nonunion of the bone.

The incorporation of a metal finger splint further enhances stability, as it allows for the individual fingers to remain aligned without affecting the entire cast. This is particularly important in managing metacarpal fractures, as the function of the hand relies heavily on the integrity of both the long bones and the finer structures within the hand.

Other immobilization methods, while offering some support, may not provide the necessary level of stability and protection for a metacarpal fracture. An elastic bandage may simply provide compression and superficial support but lacks the rigid immobilization required for effective healing. An air splint provides some support but does not offer sufficient immobilization for such fractures, and similarly, fiberglass casting, although durable, may not provide the same level of control and stabilization as