Leg & Foot Flashcards
Abductor digiti minimi ACTION
Flexes 5th toe
Assists with abduction
Abductor digiti minimi INSERTION
Smooth groove on plantar surface of the base of 5th
metatarsal
With the FDMB to the lateral side of the base of the proximal phalanx of the 5th toe
Abductor digiti minimi NERVE
Lateral Plantar n. (S1,S2,S3)
Abductor digiti minimi ORIGIN
Both processes of the calcaneal tuberosity
Plantar surface between calcaneal processes
Plantar aponeurosis
Intermuscular septum between the adductor digiti minimi and flexor digitorum brevis
Abductor Hallucis ACTION
Abduction of MTP of great toe
Assists in flexion
Assists in adduction of the forefoot
Abductor Hallucis INSERTION
Medial side of base of proximal phalanx of great toe. Medial sesmoid bone
Abductor Hallucis NERVE
Medial Plantar n. (S1,S2)
Abductor Hallucis ORIGIN
Medial process of tuberosity of calcaneus
Flexor retinaculum
Plantar aponeurosis
Adjacent intermuscular septum
Adductor Hallucis ACTION
Adduction
Assists in flexion of MTP of great toe
Adductor Hallucis INSERTION
Lateral side of base of proximal phalanx of great toe
Adductor Hallucis NERVE
Lateral Plantar n. (S2,S3)
Adductor Hallucis ORIGIN
OBLIQUE HD:
From bases of 2-4th metatarsal bones and sheath of fibularis longus tendon
TRANSVERSE HD:
From plantar MTP ligaments of 3-5th digits and deep transverse ligament
Extensor Digitorum Longus ACTION
Extend MTP joints
Assists in extension of IP 2-5
DF and EV
Extensor Digitorum Longus INSERTION
By 4 tendons to the 2-5th digits, each tendon forms an expansion on the dorsal surface of the toe, and divides
into an intermediate slip attached to base of middle phalanx and into 2 lateral slips
Extensor Digitorum Longus NERVE
Deep Fibular n. (L4, L5, S1)
Extensor Digitorum Longus ORIGIN
Lateral condyle of tibia Proximal ¾ of anterior surface of body of fibula Proximal part of interosseous membrane Adjacent intermuscular septa Deep fascia
Extensor Hallucis Brevis ACTION
Great toe MTP Extension
Extensor Hallucis Brevis INSERTION
Dorsal surface of base of proximal phalanx of great toe
Extensor Hallucis Brevis NERVE
Deep Fibular n. (L4,L5,S1)
Extensor Hallucis Brevis ORIGIN
Distal part of superior and lateral surfaces of calcaneus
Lateral talocalcaneal ligament
Apex of inferior extensor retinaculum
Extensor Hallucis Longus ACTION
Great toe IP and MTP extension
Assist in inversion of foot and dorsiflexion of ankle
Extensor Hallucis Longus INSERTION
Base of dorsal distal phalanx of great toe
Extensor Hallucis Longus NERVE
Deep Fibular n. (L4,L5, S1)
Extensor Hallucis Longus ORIGIN
Middle 2 quarters of anterior surface of fibula and adjacent interosseous membrane
Fibularis Brevis ACTION
Eversion
Assists in plantar flexion
Fibularis Brevis INSERTION
Lateral part of styloid process of 5th metatarsal
Fibularis Brevis NERVE
Superficial Fibular n. (L4,L5,S1)
Fibularis Brevis ORIGIN
Distal 2/3 of lateral surface of fibula and adjacent intermuscular septa
Fibularis Longus ACTION
Eversion
Assists in plantar flexion
Depresses first metatarsal head
Fibularis Longus INSERTION
Lateral side of base of 1st metatarsal and of medial cuneiform bone
Fibularis Longus NERVE
Superficial Fibular n. (L4,L5,S1)
Fibularis Longus ORIGIN
Lateral tibial condyle
Head and proximal 2/3 of lateral surface of fibula,
Intermuscular septa
Adjacent deep fascia
Fibularis Tertius ACTION
Ankle DF
Foot Eversion
Fibularis Tertius INSERTION
Dorsal surface, base of 5th metatarsal
Fibularis Tertius NERVE
Deep Fibular n. (L4-L5-S1)
Fibularis Tertius ORIGIN
Distal 1/3 of anterior surface of fibula, interosseous membrane and adjacent intermuscular septa
Flexor digiti minimi brevis ACTION
MTP flexion of 5th digit
Flexor digiti minimi brevis INSERTION
Distal tendon that inserts into the lateral side of the base of the proximal phalanx of the minimus (5th digit).
Flexor digiti minimi brevis NERVE
Lateral Plantar n. (S2, S3)
Flexor digiti minimi brevis ORIGIN
Medial part of the plantar surface of the base of the 5th metatarsal bone
Sheath of the fibularis longus
Flexor digitorum longus FUNCTION
Flexion of PIP, DIP and MTP of digits 2-5
Assists in ankle plantar flexion and foot inversion
Flexor digitorum longus INSERTION
Bases of distal phalanges of 2nd through 5th digits
Flexor digitorum longus NERVE
Tibial n. (L5,S1,S2)
Flexor digitorum longus ORIGIN
Middle 3/5 of posterior surface of body of tibia and from fascia covering the posterior tibialis
Flexor digitorum
brevis ACTION
PIP Flexion
Assists in flexion of 2-5th MTP
Flexor digitorum
brevis INSERTION
Middle phalanx of 2-5th digits
Flexor digitorum
brevis NERVE
Medial Plantar n. (S1,S2)
Flexor digitorum
brevis ORIGIN
Medial process of tuberosity of calcaneus
Central part of plantar aponeurosis
Adjacent intermuscualr septa
Flexor hallucis brevis ACTION
Flexion of MTP of great toe
Flexor hallucis brevis INSERTION
Medial and lateral sides of base of proximal phalanx of great toe
Flexor hallucis brevis NERVE
Medial Plantar n. (S1,S2)
Flexor hallucis brevis ORIGIN
Medial part of plantar surface of cuboid bone
Adjacent part of lateral cuneiform bone
Tendon of posterior tibialis
Flexor hallucis longus FUNCTION
Great toe IP flexion
Assists in metatarsophalangeal flexion
Ankle plantar flexion
Foot inversion
Flexor hallucis longus INSERTION
Base of distal phalanx of great toe and plantar surface
Flexor hallucis longus NERVE
Tibial n. (L5,S1,S2)
Flexor hallucis longus ORIGIN
Posterior surfac of distal 2/3 of fibula, interosseous membrane, and adjacent intermuscular septa and fascia
Gastrocnemius (lateral head) FUNCTION
Talocrural plantar flexion
Assists in knee flexion
Gastrocnemius (lateral head) INSERTION
Middle part of posterior surface of calcaneus
Gastrocnemius (lateral head) NERVE
Tibial n. (S1, S2)
Gastrocnemius (lateral head) ORIGIN
Lateral condyle and posterior surface of femur
Capsule of knee
Gastrocnemius (medial head) FUNCTION
Talocrural plantar flexion
Assits in knee flexion
Subtalar joint inversion (supination)
Gastrocnemius (medial head) INSERTION
Middle part of posterior surface of calcaneus
Gastrocnemius (medial head) NERVE
Tibial n. (S1,S2)
Gastrocnemius (medial head) ORIGIN
Proximal and posterior part of medial condyle
Adjacent part of femur
Capsule of knee joint
Interossei ACTION
PLANTAR (3):
Adduct toes 3-5 toward axial line through the 2nd digit.
IP extension of toes 3-5
DORSAL (4)
Abduct toes 2-4 from axial line through the 2nd digit.
MTP flexion of toes 2-4
IP extension of toes 2-4
Interossei INSERTION
PLANTAR (3)L:
Medial sides of bases of proximal phalanges of toes 3-5
DORSAL (4):
Medial side of proximal phalanx of 2nd toe and lateral sides of toes 2-4
Interossei NERVE
Lateral Plantar n. (S2,S3)
Interossei ORIGIN
PLANTAR (3):
Bases and medial sides of bodies of 3-5th metatarsal bones
DORSAL (4):
Each by 2 heads from adjacent sides of the metatarsal bones
Lumbricals ACTION
MTP flexion
Assists in IP 2-5th extension
Lumbricals INSERTION
Medial side of proximal phalanx and dorsal expansion of EDL tendon of toes 2-5
Lumbricals NERVE
1 - Medial Plantar n. (S1,S2)
2-4: Lateral Plantar n. (S2,S3)
Lumbricals ORIGIN
1st from medial side of 1st FDL tendon
2nd from adjacent sides of 1st and 2nd FDL tendons
3rd from adjacent sides of 2nd and 3rd FDL tendons
4th from adjacent sides of 3rd and 4th FDL tendons
Plantaris FUNCTION
Plantar flexion
Assists in knee flexion
Plantaris INSERTION
Posterior part of calcaneus
Plantaris NERVE
Tibial n. (L4,L5,S1,S2)
Plantaris ORIGIN
Distal part of lateral supracondylar line of femur and adjacent part of its popliteal surface
Oblique popliteal ligament of knee joint
Popliteus ACTION
NWB:
MR of tibia on the femur
Knee flexion
WB:
LR of femur on tibia
Knee flexion
Helps reinforce posterior ligament of knee joint
Popliteus INSERTION
Triangular area proximal to soleal line on posterior surface of tibia
Fascia covering the muscle
Popliteus NERVE
Tibial n. (L4, L5, S1)
Popliteus ORIGIN
Anterior part of groove on lateral condyle of femur
Oblique popliteal ligament of knee joint
Quadratus plantae ACTION
Modifies line of pull of the flexor digitorum longus tendons
Flexion of toes 2-5
Quadratus plantae INSERTION
Lateral margin
Dorsal and plantar surfaces of tendon of flexor digitorum longus
Quadratus plantae NERVE
Lateral Plantar n. (S1,S2,S3)
Quadratus plantae ORIGIN
MEDIAL HEAD
Medial surface of calcaneus
Medial border of long plantar ligament
LATERAL HEAD
Lateral border of plantar surface of calcaneus
Lateral border of long plantar ligament
Soleus FUNCTION
Talocrural plantar flexion
Subtalar joint inversion (supination)
Soleus INSERTION
Posterior part of calcaneus
Soleus NERVE
Tibial n. (S1, S2)
Soleus ORIGIN
Posterior surfaces of fibular head Posterior surface of proximal 1/3 of fibula Soleal line Middle 1/3 of medial border of tibia Tendinous arch between tibia and fibula
Tibialis Anterior ACTION
Ankle dorsiflexion
Assists in foot inversion
Tibialis Anterior INSERTION
Medial and plantar surface of medial cuneiform and base of 1st metatarsal bone
Tibialis Anterior NERVE
Deep Fibular n. (L4,L5,S1)
Tibialis Anterior ORIGIN
Lateral condyle tibia Proximal 1/2 of lateral surface of tibia Interosseus membrane Deep fascia Lateral intermuscular septa
Tibialis Posterior ACTION
Inversion
Assists in ankle plantar flexion
Tibialis Posterior INSERTION
Tuberosity of navicular bone and by fibrous expansions to the sustentaculum talk, all cuneiforms, cuboid, and bases of 2nd,3rd and 4th metatarsal bones
Tibialis Posterior NERVE
Tibial n. (L4, L5, S1)
Tibialis Posterior ORIGIN
Most of interosseous membrane, lateral portion of posterior surface of tibia, proximal 2/3 of medial surface of fibula, adjacent inter-muscular septa, and deep fascia
Extensor digitorum brevis ORIGIN
Distal part of superior and lateral surfaces of calcaneus
Lateral talocalcaneal ligament
Apex of inferior extensor retinaculum
Extensor digitorum brevis INSERTION
By 4 tendons to 1-4th digits.
The most medial slip (EHB) inserts into dorsal surface of base of proximal phalanx of great toe.
Other 3 tendons join lateral sides of tendons of EDL to 2nd, 3rd, and 4th digits
Extensor digitorum brevis ACTION
IP and MTP joint extension of toes 2-4
Extensor digitorum brevis NERVE
Deep fibular (L4,5,S1)