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Table 4 Intrinsic muscles of the foot and function

From: Sarcopenia in the foot on magnetic resonance imaging in patients with diabetes mellitus – a systematic review

 

Muscle

Function

Plantar Group

 1st Layer (superficial)

Abductor Hallucis

Abduction and Flexion of Hallux

Abductor Digiti Minimi

Abduction of the 5th Digit

Flexor Digitorum Brevis

Flexion of 2nd-5th Digits

 2nd Layer

Lumbricals

Flexion of the metatarsophalangeal joints and extension at the interphalangeal joints

Quadratus plantae

Flexion of 2nd-5th Digits

 3rd Layer

Adductor Hallucis

Adduction of the Hallux at the metatarsophalangeal joint

Flexor Hallucis Brevis

Flexion of the Hallux at the metatarsophangeal joint

Flexor Digiti Minimi Brevis

Flexion of the 5th Digit at the metatarsophalangeal joint

 4th Layer (deep)

Plantar Interossei

Adduction of 3rd-5th Digits

Dorsal Interossei

Adduction of 2nd-5th Digits

Dorsal Group

 

Extensor Hallucis Brevis

Extension of Hallux

 

Extensor Digitorum Brevis

Extension of 2nd-4th Digits