Answer :
Final answer:
The Thumb Spica Splint (option A) is the correct treatment approach for fractures at the metacarpal bases, particularly for the first metacarpal of the thumb, due to its unique role in hand function and anatomy. Other options listed pertain to conditions affecting the phalanges.
Explanation:
The treatment basics for fractures involving the metacarpal bases typically involve immobilization to ensure proper healing and alignment. The Thumb Spica Splint is specifically designed for this purpose, particularly in situations involving the first metacarpal bone at the base of the thumb. This type of splint is crucial for maintaining thumb mobility and promoting effective healing, given the thumb's significant role in hand function and its unique anatomical structure, allowing it a freedom of motion independent of the other metacarpal bones. The remaining options, such as Swan Neck Deformity, Mallet Finger, and Boutonniere Deformity, refer to specific types of injuries or conditions affecting the phalanges rather than initial treatments for metacarpal base fractures.
