University:
Western Sydney University
Course:
MEDI 2003 | Clinical Sciences 2
Academic year:

2024
Views:

310

Pages:

2
Author:

Mariam A. A.

Intrinsic Muscles of the Sole First Layer Muscle Name Flexor digitorum brevis Abductor digiti minimi Abductor hallucis Origin Medial process of calcaneal tuberosity, plantar aponeurosis and intermuscular septum Calcaneal tuberosity, plantar aponeurosis Insertion Middle phalanges of digits 2-5 Innervation Medial plantar nerve (S1-S3) Function Metatarsophalangeal joints 2-5: Toe flexion; supports longitudinal arch of foot Base of proximal phalanx of digit 5, metatarsal bone 5 Lateral plantar nerve (S1-S3) Medial process of calcaneal tuberosity, flexor retinaculum, plantar aponeurosis Base of proximal phalanx of great toe Metatarsophalangeal joint 5: Toe abduction, toe flexion; Supports longitudinal arch of foot Medial plantar nerve (S1-S3) Metatarsophalangeal joint 1: Toe abduction, toe flexion; Support of longitudinal arch of foot Second Layer Muscle Name Quadratus plantae Lumbricals Origin Insertion Innervation Function Medial surface of calcaneus bone, lateral process of calcaneal tuberosity Tendons of flexor digitorum longus Tendon of flexor digitorum longus Lateral plantar nerve (S1-S3) Metatarsophalangeal joints 2-5: Toe flexion Medial bases of proximal phalanges and extensor expansion of digits 25 • • Lumbrical 1: Medial plantar nerve (S2, S3); Lumbricals 24: Lateral plantar nerve (S2-S3) • • Metatarsophalangeal joints 2-5: Toe flexion, Toes adduction. Interphalangeal joints 25: Toes extension Third Layer Muscle Name Flexor digiti minimi brevis Origin Hook of hamate, flexor retinaculum • Adductor hallucis Oblique head: bases of metatarsal bones 2-4, cuboid bone, lateral cuneiform bone, tendon of fibularis longus • Transverse head: plantar metatarsophalangeal ligaments of toes 35, deep transverse metatarsal ligaments of toes 3-5 Tendon of tibialis posterior, medial cuneiform bone, lateral cuneiform bone, cuboid bone Flexor hallucis brevis Insertion Base of proximal phalanx of digit 5 Lateral aspect of base of proximal phalanx of great toe Lateral and medial aspects of base of proximal phalanx of great toe Innervation Deep branch of ulnar nerve (C8, T1) Lateral plantar nerve (S2, S3) Medial plantar nerve (S1, S2) Function Metacarpophalangeal joint 5: Finger flexion (+ finger lateral rotation/opposition) Metatarsophalangeal joint 1: Toe adduction, toe flexion; Support of longitudinal and transverse arches of foot • • Blood vessels and nerves For the following blood vessels and nerves identify the origin, course and major branches Arteries • • Dorsalis pedis - Deep plantar Medial and lateral plantar Veins • • Superficial - Great saphenous - Small saphenous Deeps - Venae Commitantes of arteries Nerves • • Medial planter Lateral plantar Superficial and deep terminal branch Metatarsophalangeal joint 1: Toe flexion. Support of longitudinal arch of foot