One simple and proven method for immobilizing boxer's fractures is the ul- nar gutter splint. The splint effectively immobilizes the patient's fourth and fifth fingers, the fourth and fifth meta- carpophalangeal (MCP) joints, and the wrist. ... The splint is easier to apply than a short arm cast with an outrigger. (https://www.tandfonline.com/doi/abs/10.3810/psm.1999.01.620?journalCode=ipsm20)
What is a Ulnar Gutter Splints used for?
Ulnar gutter splints are used for fractures and severe sprains to the fourth and fifth metacarpals and phalanges (ring and pinky fingers). Radial gutter splints are used for fractures and severe sprains to the second and third metacarpals and phalanges (pointer and middle fingers). (https://study.com/academy/lesson/hand-finger-splints-ulnar-gutter-radial-gutter.html)
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