Flexor accessorius at a glance
- Also called
- Quadratus plantae
- What it is
- A muscle of the sole that assists the long toe flexor.
- Location
- Origin: medial and lateral surfaces of the calcaneus. Insertion: lateral border of the tendon of flexor digitorum longus.
- Function
- Straightens the pull of flexor digitorum longus and helps flex the lateral four toes.
- Body system
- Muscular · paired (left and right)
- FMA ID
- FMA37465 (Foundational Model of Anatomy)
Key facts
- Innervation: lateral plantar nerve
- Also called quadratus plantae
Structures next to the flexor accessorius
The nearest named structures in the 3D model, measured from the centre of each part:
- Long plantar ligament · skeletal
- Lateral plantar artery · cardiovascular
- Cuboid bone · skeletal
- Abductor digiti minimi of foot · muscular
- Medial plantar artery · cardiovascular
- Calcaneus · skeletal
- Plantar venous arch of foot · cardiovascular
- Plantar arch · cardiovascular
- Lateral tarsal artery · cardiovascular
- Lateral cuneiform bone · skeletal
References
- Foundational Model of Anatomy: Flexor accessorius (FMA37465). EMBL-EBI Ontology Lookup Service.
- OpenStax. Anatomy and Physiology 2e, §11.2 Naming Skeletal Muscles. Rice University, 2022.
- Mitsuhashi N. et al. (2009). BodyParts3D: 3D structure database for anatomical concepts. Nucleic Acids Research 37, D782–D785. Data © The Database Center for Life Science, CC BY 4.0.
Related anatomy
Explore the whole body in the interactive 3D human anatomy model, or browse the A–Z list of human structures.