Final answer:
An ulnar gutter splint is the most appropriate treatment for a volar angulation of the fifth metacarpal, also known as a Boxer's Fracture.
Step-by-step explanation:
The student's question pertains to the appropriate treatment for a volar angulation of the fifth metacarpal, commonly known as a Boxer's Fracture. The metacarpal bones, including the fifth metacarpal, form the palm of the hand and are numbered 1-5 starting from the thumb side. A volar angulation fracture of the fifth metacarpal requires immobilization to ensure proper healing. The best option for immobilization of such a fracture is typically an ulnar gutter splint. This type of splint is designed to conform to the medial (ulnar) side of the forearm, hand, and the fourth and fifth digits and is specifically meant for stabilization of fractures to the fourth and fifth metacarpals.