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Home , Abductor hallucis muscle, Lateral plantar artery, Sole (foot)

Sole Of The

Thick Supply Skin Skin Thick and hairless.Firmly bound down to the underlying deep by numerous fibrous bands. Shows a few flexure creases at the sites of skin movement. Sweat glands are present in large numbers. The sensory nerve supply to the skin of the of the foot SUPERFICIAL FASCIA

Cutaneous Cutaneus CUTANEOUS NERVES

Medial calcaneal branch of the Medial Sural & DEEP FASCIA

Planter Deep transverse metatarsal Ligament Fibrous flexor sheath Septae Plantar aponeurosis • Definition:  Thickened band of deep fascia in the sole of the foot. • Attachment:  Posteriorly: Medial tubercle of .  Anteriorly: Divides into 5 slips which pass to the 5 .  On each side: Attached to the by medial and lateral intermuscular septa. Plantar aponeurosis

• Functions: Protects the underlying nerves and vessels. Maintains the longitudinal arches of the foot.

MUSCLES FOUR LAYERS

FIRST(SUPERFICIAL) SECOND THIRD FOURTH 1st Layer

• Three Muscles: 1)Abductor hallucis 2)Flexor digitorum brevis 3)Abductor digiti minimi 1st Layer

SECOND LAYER

• 1.QUADRATUS PLANTAE/FLEXOR DIGITORUM ACCESSORIOUS • 2.LUMBRICALS • 3.TENDON OF FLEXOR DIGITORUM LONGUS • 4.TENDON OF FLEXOR HALLUCIS LONGUS 2nd Layer • Two Tendons: 1) Flexor halusis longus 2) Flexor digitorum longus • Two Muscles: 1) Quadratus Plantae (Flexor digitorum accessorius) 2) 4 Lumbricals muscles

1st & 2nd Layers 3rd Layer • Three Muscles: 1)Flexor hallucis brevis. 2)Adductor hallucis 3)Flexor digiti minimi brevis

FOURTH LAYER

• 1.DORSAL INTEROSSEI (4) 2.PLANTER INTEROSSEI(3) • 3.TENDON OF • 4.TENDON OF TIBIALIS POSTERIOR 4th Layer • Two Tendons: 1)Tibialis posterior 2)Peroneus Longus • Two Muscles: 1)3 Planter Interossei 2)4 Dorsal Interossei

3rd & 4th Layers NERVES MEDIAL PLANTER LATERAL PLANTER It is larger of the two terminal branch of the posterior tibial nerve. Enter the foot midway between the medial and the medial tubercle of the calcaneus, under cover the flexor retinaculum. Passes forwards deep to the . Terminate at the bases of the metatarsal bones by dividing into 3 planter digital nerves. Medial Plantar Nerve • Branches:  Muscular (to four muscles) to: Abductor hallucis. 1) Flexor digitorum brevis. 2) Flexor hallucis brevis 3) First lumbrical muscle  Cutaneous: Planter cutaneous branches: 1) To the skin of the medial 2/3 of the sole of the foot. 2) Planter digital nerves  Articular branches: To intertarsal and tarso- metatarsal joints. Lateral Plantar Nerve It is smaller of the two terminal branches of the posterior tibial nerve. Enters the foot midway between the medial malleolus and the medial tubercle of the calcaneus under cover the flexor retinaculum. Passes forwards and laterally deep to abductor hallusis. Terminate at the base of the 5th metatarsal bone, by dividing into a superficial and a deep branches. Lateral Plantar Nerve Branches: Muscular : 1) Flexor digitoum accessorius muscle 2) Abductor digiti minimi 3) Flexor digiti minimi brevis 4) Adductor halucis muscle. 5) Interossei 6) 2nd, 3rd & 4th lumbricals.  Cutaneous: 1) Skin of the lat. 1/3 of the sole 2) Skin on the lat.side of the planter surface of the little and the adjoining sides of the 4th & 5th toes. 3) The planter digital branches, also, supply the skin on the dorsum of the terminal phalanges of the lateral one and half toes.

Tibial nerve NERVES OF SOLE Lat. Plantar Nerve Med. Plantar Nerve To Flex. Dig. Accessorius

To Abd. Digiti Minimi Br. to Abd. Hallucis

Br. to Flex. Dig. Brevis

Deep Branch Superficial Branch

Br. to Flex. Hal. Brevis

1st Lumbrical To Flex. Dig. Min. Brevis 2nd Lumbrical & Muscles of 4th interos. space

Medial Plantar One of the two terminal branches of the . Enter the foot midway between the medial malleolus and the medial tubercle of the calcaneus, under cover the flexor retinaculum. Passes forwards deep to the abductor hallucis muscle. Passes b/w the abd.hallucis and flexor digitorum brevis. Termination: By anastmosing with the 1st planter metatarsal artery. Branches: Muscular Digital: 3 superficial digital branches these branches end by anastmosing with the first, second and third planter metatarsal arteries. • One of the two terminal branches of the posterior tibial artery. • At first between the 1st and 2nd layers, then curves medially between the 3rd and 4th layers of the sole. • Turns medially with the deep branch of the lateral planter nerve with slight forward convexity to from the between the 3rd & 4th layers of muscles. Lateral Plantar Artery • Branches:  Muscular  Anastomotic branches: b/w arcuate & lateral tarsal arteries of the .  Posterior :  3 branches which anastomose with the dorsal metatarsal arteries.  Planter digital artery: to the lateral side of the little toe.  Three planter metatarsal arteries Transverse section through sole of right foot

3 Prox. Perforating A Dorsalis Pedis A.

4th layer

Metatarsal - 1 Metatarsal - 5 3nd layer

2nd layer

Deep Br. Of 1st layer Lat. Plantar art.

Trunk of Lateral Plantar art.

APPLIED ANATOMY • ARCHES OF FOOT • PAIN • MTEATARSALGIA • PLANTAR FASCITIS • INFECTION • INJURY • DIABETIC FOOT • CALCANEAL SPUR

QUESTION-1

• Which dermatome is mainly stimulated in plantar reflex: • A) L 4 • B) L 5 C) S 1 • D) S 2 QUESTION-2

• All of the following belong to 3rd layer of muscles in sole except: • A) Flexor hallucis brevis • B) Abductor hallucis • C) Adductor hallucis • D) Flexor digiti minimi brevis QUESTION-3

• During walking though the flexor digitorum longus contracting strongly, the toes do not buckle because of action of all the following muscles except: • A) flexor digitorum accessorious • B) Extensor digitorum longus • C) Lumbricles • D) Interossei QUESTION-4

• Plantar arch mainly formed by medial plantar artery – True/ false QUESTION-5

• In syndrome the sensory supply to which area of the sole is Mainly affected: • A) • B) Medial margin of sole • C) Middle part of sole • D) Lateral part of sole