Metacarpal WristForearm Shell Dorsal

1. Supports the transverse metacarpal arch via dorsal and palmar metacarpal bars.

2. Positions the wrist.

3. Provides a base of attachment for finger or thumb phalangeal bars and for outrigger components.

Splint: Index-small finger MP extension and radial deviation mobilization splint, type 1 (5)

Fig. 21-8C Example of completed splint.

ANATOMIC LANDMARKS

Fig. 21-8C Example of completed splint.

ANATOMIC LANDMARKS

a. Index-small finger MP joints b. First web space c. Two-thirds distal length of forearm

a. First web space b. Distal palmar flexion crease

a. Half thickness fifth metacarpal b. Half thickness ulnar and radial wrist c. Half thickness ulnar and radial forearm

COMPLETED PATTERN (Fig. 21-8, G)

Fig. 21-8G

Fig. 21-8G

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