Flexor Digitorum Brevis

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The Flexor Digitorum Brevis is an intrinsic muscle of the foot located in Plantar Layer I. The muscles located in Plantar Layer I are:

• Abductor hallucis
• Abductor digiti minimi pedis
• Flexor digitorum brevis

ATTACHMENTS:

• Calcaneus to toes #2-5.
  • The proximal attachment is onto the tuberosity of the calcaneus.
  • The distal attachments are onto the medial and lateral sides of the middle phalanges.

ACTIONS:

• Flexes toes #2-5 at the metatarsophalangeal and proximal interphalangeal joints.

NOTES:

1. The flexor digitorum brevis also has attachments into the plantar fascia of the foot.
2. The distal tendons of the flexor digitorum brevis split to allow passage of the distal tendons of the flexor digitorum longus.