Muscular branches of radial nerve

Looks like

Branches of the radial nerve entering the triceps, brachioradialis and wrist extensors along the arm.

What it does

Straighten the elbow and lift the wrist.

Keeping it well

A mid-arm fracture or sleeping with the arm over a chair ('Saturday night palsy') can cause wrist drop.

Related conditions

• Amyloidosis (AL and ATTR)
• Botulism
• Chickenpox (varicella)
• Chronic neuropathic pain
• Chronic pain syndrome
• Fibromyalgia
• Guillain-Barré syndrome
• Lyme disease
• Myasthenia gravis
• Peripheral neuropathy
• Rabies
• Restless legs syndrome
• Shingles (herpes zoster)
• Tetanus
• Vitamin B1, C and other deficiencies