Quadratus Plantae

Authors

Affiliations

Nathaniel Yomogida, B.S., SPT

Doctor of Physical Therapy

B.S. in Kinesiology

Chloë Kerstein, B.S., SPT

Doctor of Physical Therapy

B.A. in Neuroscience

Schematic of 2nd layer of Plantar Intrinsic Foot Muscles¹
1: Quadratus Plantae
2: Lumbricals
3: Flexor Hallucis Brevis
4: Adductor hallucis
5: Flexor digiti minimi
6: Opponens digiti minimi
7: Plantar interossei
8: Dorsal Interossei

2nd and 4th Layers of Intrinsic Plantar Foot Muscles¹

Overview

Muscle	Origin	Insertion	Innervation	Action
Quadratus plantae	Calcaneal tuberosity (medial and plantar borders)	Tendons of FDL (lateral borders)	Lateral Plantar n. S1 - S3	Redirects and augments pull of the FDL

Origin

• Medial borders of calcaneal tuberosity¹
• Plantar borders of calcaneal tuberosity¹

Insertion

Lateral border of tendons of FDL¹

Innervation

Lateral Plantar N. (S1, S2, S3)¹

Action

Redirects/augments pull of FDL¹

MMT

1.

Gilroy AM, MacPherson BR, Wikenheiser JC, Voll MM, Wesker K, Schünke M, eds. Atlas of Anatomy. 4th ed. Thieme; 2020.