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MUSCLE
REGION
ORIGIN
INSERTION
PRIMARY
ACTION
SECONDARY
ACTION
INNERVATION
tibial nerve
(L4, L5)
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Ankle plantarflexion
Ankle inversion
all tarsal bones except talus, base of 2nd to 4th metatarsal
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proximal 1/2 tibia distal to soleal line, medial proximal 2/3 fibula, adjacent interosseous membrane
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Lower Limb
Tibialis Posterior
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deep fibular (peroneal) nerve
(L5, S1)
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Ankle dorsiflexion
2nd to 5th MTP extension, 2nd to 5th IP extension
base of 2nd to 5th middle phalanx via dorsal digital expansions, base of 2nd to 5th distal phalanx via dorsal digital expansions
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proximal 2/3 anterior fibula, adjacent interosseous membrane, lateral condyle of tibia
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Lower Limb
Extensor Digitorum Longus
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deep fibular (peroneal) nerve
(L4, L5)
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Ankle dorsiflexion
medial cuneiform, base of 1st metatarsal
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lateral proximal 2/3 tibia, adjacent interosseous membrane
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Lower Limb
Tibialis Anterior
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posterior division of the obturator nerve, Tibial nerve
(L2, L3, L4)
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Hip medial rotation, Hip lateral rotation
Hip adduction
linea aspera, medial supracondylar ridge of femur, adductor tubercle of femur
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ischiopubic ramus to inferior ischial
tuberosity, ischial tuberosity
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Lower Limb
Adductor Magnus
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Femoral nerve
(L2, L3, L4)
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Knee extension
medial border of patella via quadriceps tendon, tibial tuberosity via patellar ligament/tendon, medial condyle of tibia
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intertrochanteric line of femur, medial lip of linea aspera, proximal 2/3 medial supra-condylar line of femur, medial intramuscular septum, tendon of adductor magnus
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Lower Limb
Vastus Medialis
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Tibial nerve
(L5, S1, S3)
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Hip medial rotation
Hip extension, Knee flexion
posteromedial surface of medial condyle of tibia
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lateral facet of ischial tuberosity
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Lower Limb
Semi-membranosus
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Tibial nerve
(L5, S1, S2)
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Hip lateral rotation, Lateral tibial rotation
Hip extension, Knee flexion
head of fibula, lateral condyle of tibia
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medial facet of ischial tuberosity, sacrotuberous ligament
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Lower Limb
Biceps Femoris Long Head
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tibial nerve
(S1, S2)
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Knee flexion
Ankle plantarflexion
posterior calcaneus via tendocalcaneus
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medial and lateral femoral condyles, capsule of knee joint
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Lower Limb
Gastrocnemius
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Posterior interrosseous branch of radial nerve
(C6, C7)
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Radial deviation, Elbow extension
Wrist extension
Posterior base of 3rd metacarpal
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Lateral epicondyle of the humerus
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Upper Limb
Extensor Carpi Radialis Brevis
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Accessory nerve (XI), Ventral rami C3 to C4, Dorsal rami C3 to T12
(C3, C4)
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Scapular elevation, Scapular depression, Scapular lateral rotation
Scapula retraction
Lateral 1/3 clavicle, Acromion of the scapula, Spine of the scapula
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Superior nuchal line, External occipital pertuberance, Ligamentum nuchae, C7 to T12 spinous processes
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Upper Limb, Torso
Trapezius
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Femoral nerve
(L2, L3, L4)
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Knee extension
medial border of patella via quadriceps tendon, tibial tuberosity via patellar ligament/tendon, medial condyle of tibia
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intertrochanteric line of femur, medial lip of linea aspera, proximal 2/3 medial supra-condylar line of femur, medial intramuscular septum, tendon of adductor magnus
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Lower Limb
Vastus Medialis
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Femoral nerve
(L2, L3)
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Hip abduction, Hip medial rotation, Knee medial rotation
Knee flexion and hip flexion
medial proximal shaft of tibia via pes anserine
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anterior superior iliac spine (ASIS)
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Lower Limb
Sartorius
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MUSCULOSKELORDLE
Lower Limb Mode
Abductor Digiti Minimi
Lower Limb
Abductor Digiti Minimi
Upper Limb
Abductor Hallucis
Lower Limb
Abductor Pollicis Brevis
Upper Limb
Abductor Pollicis Longus
Upper Limb
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