Hand Muscles

Check my Hand Functions due to the muscle loss in my last post Muscle-loss

Forearm Muscles:
Forearm has two compartments  Posterior &  Anterior

Posterior Compartment

Hand Muscles Posterior

Superficial muscles :

• Brachioradialis flexes at the elbow.
• Extensor Carpi Radialis Longus and Brevis extends and abducts the wrist.
• Extensor Digitorum extends medial four fingers at the MCP and IP joints.
• Extensor Digiti Minimi extends the little finger and contributes to extension at the wrist.
• Extensor Carpi Ulnaris extension and adduction of wrist.
• Anconeus moves the ulna during pronation and extends at the elbow joint.

Hand Muscles Posterior 2

Deep Muscles:

• Supinator supinates the forearm.
• Abductor Pollicis Longus abducts the thumb.
• Extensor Pollicis Brevis extends at the metacarpophalangeal and carpometacarpal joints of the thumb.
• Extensor Pollicis Longus extends all joints of the thumb: carpometacarpal, metacarpophalangeal and interphalangeal.
• Extensor Indicis extends the index finger.

Muscle Loss

I have experienced the worst muscle loss in my right hand forearm.It leads me to the worst inability.We have to understand the functions of the muscles before knowing my hand inability.

Forearm Muscles - Flexors 

Radial Nerve Full view

Inabilities

Wrist Drop:

• Due to the deep branch of my radial nerve was affected and also due to the muscles loss in the surrounding area,I have Wrist Drop.
• Wrist Drop leads weakness in my shoulder joint and pain in the triceps.
• I also can't bend or extend my elbow joint due to Wrist Drop.

Fingers Movement:

• I am not able to fold my fingers properly.
• I can able to bend my middle finger, ring finger & small finger (75 %)  and index finger (50 %).
• There is a slight movement in my thumb finger(20%).

All because of the muscle loss during the accident.

Check the below link for the functions of hand: 

Hand-muscle-Functions