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Hand Anatomy/Splints

What is the function of the Lumbricals? MCP Flexion and IP Extension
What is the function of the dorsal compartment? prevents tendons from bowstringing
What are the muscles that originate and insert with the hand? intrinsic hand muscles (thenar, hypothenar, central compartment muscles)
What are 3 nerves that innervate the forearm and hand? medial, radial, and ulnar nerve
What 4 muscles comprise the thenar musculature? opponens pollicis, abductor pollicis, abductor pollicis brevis, flexor pollicis brevis
What 3 muscles comprise the hypothenar musculature? flexor digiti minimi, abductor digiti minimi, opponens digiti minimi
2 most important pulleys in flexor mechanism to prevent bowstringing? A2 Pulley and A4 Pulley
What is the purpose of the carpal tunnel and dorsal compartment? To prevent tendons from bowstringing
What is the function of the Interossei? Extend the DIP and PIP
What nerve is the extrinsic flexors innervated by and what are the muscles? median nerve median nerve1. flexor carpi radialis2. flexor carpi ulnaris3. palmaris longus
What are the 4 instrinsic muscles? 1. Thenar Muscles2. Hypothenar Muscles3. Lumbrical Muscles4. Interossei Muscles
What finger is the thenar muscles responsible for? thumb side
What finger is the hypothenar muscles responsible for? small-finger/pinky side
What is the functional position for a splint? 1. 15 to 30 degrees of wrist extension2. slight ulnar deviation3. 15 to 20 degrees of MCP flexion4. 10 degrees of PIP and DIP flexion5. palmar abduction of thumb (preserve webspace)6. extension of MP and IP of the thumb
Created by: asianabrcrmbgrl