Tibial L4, 5, S1 Flexor Hallucis Brevis The Greek name of this muscle means “belly of the leg”, suggesting it is a round muscle, when it is actually thin compared to the soleus. Gastrocnemius Tibial Tuberosity (via the patella and patellar ligament) Quadriceps Femoris Group Middle, posterior surface of tibia Flexor Digitorum Longus Extend the first toe, dorsiflex the ankle, and invert the foot Extensor Hallucis Longus Plantar Flex the ankle Soleus Iliotibial tract Tensor Fasciae Latae/ Iliotibial Tract This muscle has a short belly, but its tendon is the longest in the body. Plantaris Tibial L(4), (5), S1, 2 Second through fourth Lumbricals of the Foot You use this muscle when walking on your tiptoes, hiking on a rocky trail, or turning the water tap with your toes when lying in the bathtub. Tibialis Posterior Evert the foot and assist to plantar flex the ankle Fibularis Brevis Middle half of posterior fibula Flexor Hallucis Longus Medial surfaces of proximal phalanges of 3rd – 5th metatarsals Plantar Interossei This muscle has two heads and can have three different actions, unlike any other muscle of the foot Adductor Hallucis Posterior aspect of medial condyle of tibia Semimembranosus Tibial L5, S1, (2) Flexor Digitorum Longus Sciatic (tibial branch) L4, 5, S1, 2 Semitendinosus This muscle is part of the adductor group of the hip but is the only one in its group to have an action at the knee. Gracilis Medially rotate the flexed knee and flex the knee Popliteus Base of the 5th metatarsal Flexor Digiti Minimi Brevis This muscle is the only one in the quadriceps femoris group to cross two joints (the hip and the knee). Rectus Femoris Invert the foot and dorsiflex the ankle Tibialis Anterior Superficial Fibular L4, 5, S1 Fibularis Longus Medial lip of linea aspera Vastus Medialis Posterior, lateral aspect of flexor digitorum longus tendon Quadratus Plantae Proximal phalanx of 1st toe and medial sesamoid bone Abductor Hallucis Flex middle phalanges of the 2nd – 5th toes Flexor Digitorum Brevis Deep Fibular L4, 5, S1 Extensor Hallucis Brevis Long head: ischial tuberosity. Short head: lateral lip of linea aspera Biceps Femoris This muscle is the longest in the body, stretching from the ASIS, across the thigh, to the medial knee. Sartorius 1st : Medial surface of proximal phalanx of 2nd toe. 2nd – 4th : Lateral surfaces of proximal phalanges of 2nd – 4th toes. Dorsal Interossei Extend the 2nd – 5th toes, dorsiflex the ankle, and evert the foot Extensor Digitorum Longus Femoral L2, 3, 4 Quadriceps Femoris Group Lateral process of calcaneus and plantar aponeurosis Abductor Digiti Minimi Dorsal surface of calcaneus Extensor Digitorum Brevis Tibial L4, 5, S1 Flexor Hallucis Brevis The Greek name of this muscle means “belly of the leg”, suggesting it is a round muscle, when it is actually thin compared to the soleus. Gastrocnemius Tibial Tuberosity (via the patella and patellar ligament) Quadriceps Femoris Group Middle, posterior surface of tibia Flexor Digitorum Longus Extend the first toe, dorsiflex the ankle, and invert the foot Extensor Hallucis Longus Plantar Flex the ankle Soleus Iliotibial tract Tensor Fasciae Latae/ Iliotibial Tract This muscle has a short belly, but its tendon is the longest in the body. Plantaris Tibial L(4), (5), S1, 2 Second through fourth Lumbricals of the Foot You use this muscle when walking on your tiptoes, hiking on a rocky trail, or turning the water tap with your toes when lying in the bathtub. Tibialis Posterior Evert the foot and assist to plantar flex the ankle Fibularis Brevis Middle half of posterior fibula Flexor Hallucis Longus Medial surfaces of proximal phalanges of 3rd – 5th metatarsals Plantar Interossei This muscle has two heads and can have three different actions, unlike any other muscle of the foot Adductor Hallucis Posterior aspect of medial condyle of tibia Semimembranosus Tibial L5, S1, (2) Flexor Digitorum Longus Sciatic (tibial branch) L4, 5, S1, 2 Semitendinosus This muscle is part of the adductor group of the hip but is the only one in its group to have an action at the knee. Gracilis Medially rotate the flexed knee and flex the knee Popliteus Base of the 5th metatarsal Flexor Digiti Minimi Brevis This muscle is the only one in the quadriceps femoris group to cross two joints (the hip and the knee). Rectus Femoris Invert the foot and dorsiflex the ankle Tibialis Anterior Superficial Fibular L4, 5, S1 Fibularis Longus Medial lip of linea aspera Vastus Medialis Posterior, lateral aspect of flexor digitorum longus tendon Quadratus Plantae Proximal phalanx of 1st toe and medial sesamoid bone Abductor Hallucis Flex middle phalanges of the 2nd – 5th toes Flexor Digitorum Brevis Deep Fibular L4, 5, S1 Extensor Hallucis Brevis Long head: ischial tuberosity. Short head: lateral lip of linea aspera Biceps Femoris This muscle is the longest in the body, stretching from the ASIS, across the thigh, to the medial knee. Sartorius 1st : Medial surface of proximal phalanx of 2nd toe. 2nd – 4th : Lateral surfaces of proximal phalanges of 2nd – 4th toes. Dorsal Interossei Extend the 2nd – 5th toes, dorsiflex the ankle, and evert the foot Extensor Digitorum Longus Femoral L2, 3, 4 Quadriceps Femoris Group Lateral process of calcaneus and plantar aponeurosis Abductor Digiti Minimi Dorsal surface of calcaneus Extensor Digitorum Brevis
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N-Flexor Hallucis Brevis
M-Gastrocnemius
I-Quadriceps Femoris Group
O-Flexor Digitorum Longus
A-Extensor Hallucis Longus
A-Soleus
I-Tensor Fasciae Latae/ Iliotibial Tract
M-Plantaris
N-Second through fourth Lumbricals of the Foot
M-Tibialis Posterior
A-Fibularis Brevis
O-Flexor Hallucis Longus
I-Plantar Interossei
M-Adductor Hallucis
I-Semimembranosus
N-Flexor Digitorum Longus
N-Semitendinosus
M-Gracilis
A-Popliteus
O-Flexor Digiti Minimi Brevis
M-Rectus Femoris
A-Tibialis Anterior
N-Fibularis Longus
O-Vastus Medialis
I-Quadratus Plantae
I-Abductor Hallucis
A-Flexor Digitorum Brevis
N-Extensor Hallucis Brevis
O-Biceps Femoris
M-Sartorius
I-Dorsal Interossei
A-Extensor Digitorum Longus
N-Quadriceps Femoris Group
O-Abductor Digiti Minimi
O-Extensor Digitorum Brevis
