Extensor digiti minimi

Looks like

A slender muscle alongside extensor digitorum, sending a tendon to the little finger.

What it does

Straightens the little finger independently.

Keeping it well

Its tendon can rupture with rheumatoid arthritis at the wrist; sudden inability to lift the finger needs a doctor.

Related conditions

• Botulism
• Compartment syndrome
• De Quervain's tenosynovitis
• Fibromyalgia
• Frailty & falls in older age
• Heat exhaustion & heatstroke
• Lymphangitis
• Malnutrition & refeeding syndrome
• Muscular dystrophy
• Polymyalgia rheumatica
• Rhabdomyolysis
• Sarcoma
• Sarcopenia
• Tetanus