What is an ulnar gutter splint primarily used for?

An ulnar gutter splint is specifically designed to immobilize and support the 4th and 5th fingers, making it particularly effective for managing boxer's fractures, which are fractures of the 4th and 5th metacarpals. This type of splint allows for stabilization of these bones while also accommodating the anatomical and functional needs of the hand during the healing process.

The design of the ulnar gutter splint focuses on capturing the ulnar aspect of the hand and the fingers, ensuring that the 4th and 5th metacarpals are adequately supported. By providing this targeted immobilization, the splint aids in pain reduction and promotes proper alignment during the healing phase. This makes it a pivotal tool in the management of injuries commonly associated with punching or similar impact injuries to the hand, which is characteristic of boxer's fractures.

In contrast, other types of fractures such as those of the 2nd and 3rd metacarpals, distal radius, and proximal humerus would require different types of splinting or casting methods that align more closely with their anatomical locations and the function necessary for healing.