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MUSCLE
REGION
ORIGIN
INSERTION
PRIMARY
ACTION
SECONDARY
ACTION
INNERVATION
posterior branch of the obturator nerve
(L3, L4)
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Hip lateral rotation
trochanteric fossa of femur
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external surface of obturator membrane
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Lower Limb
Obturator Externus
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Femoral nerve
(L2, L3, L4)
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Knee extension
base and lateral border of patella via quadriceps tendon, tibial tuberosity via patellar ligament/tendon
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intertrochanteric line of femur, greater trochanter of femur, gluteal tuberosity of femur, proximal 1/2 lateral lip of linea aspera of femur
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Lower Limb
Vastus Lateralis
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femoral nerve, obturator or accessory obturator nerve
(L1, L2, L3)
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Hip flexion, Hip medial rotation
Hip adduction
pectineal line of femur
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pectineal line of pubis, iliopubic eminence, pubic tubercle
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Lower Limb
Pectineus
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lateral plantar nerve
(T1)
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5th MTP abduction
base of 5th proximal phalanx
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medial and lateral tubercles of tuberosity of calcaneus, plantar aponeurosis
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Lower Limb
Abductor Digiti Minimi
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Musculocutaneous nerve
(C5, C6)
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Forearm supination, Shoulder flexion
Elbow flexion
Radial tuberosity, Bicipital aponeurosis
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Corocoid process, Supraglenoid tubercle
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Upper Limb
Biceps Brachii
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nerve to the quadratus femoris
(L4, L5, S1)
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Hip lateral rotation
quadrate tubercle of femur
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ischial tuberosity
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Lower Limb
Quadratus Femoris
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anterior division of the obturator nerve
(L2, L3)
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Hip adduction, Medial tibial rotation
Knee flexion
medial surface of proximal shaft of tibia via pes anserine
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anterior body of pubis, ischiopubic ramus
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Lower Limb
Gracilis
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anterior rami of L1 to L4
(L2, L3)
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Hip flexion
lesser trochanter of femur, Capsule of hip joint
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bodies and transverse processes of T12 to L5, T12 to L5 intervening intervertebral discs
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Lower Limb, Torso
Psoas Major
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tibial nerve
(L5)
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Knee flexion
Lateral tibial rotation
posterior tibia superior to the soleal line
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lateral femoral condyle
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Lower Limb
Popliteus
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ventral rami of adjacent spinal nerves
(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12)
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Inspiration
Upper border of the 2nd to 12th ribs
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Lower border of 1st to 11th ribs
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Torso
Intercostals
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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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ventral rami of T7 to T12, L1 spinal nerve
(T7, T8, T9, T10, T11, T12, L1)
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Ipsilateral lumbar to thoracic lateral flexion, ipsilateral lumbar to thoracic rotation, expiration
Lumbar to thoracic flexion
lateral 2/3 of inguinal ligament, middle lip of anterior 2/3 iliac crest, body of pubis, pubic crest, thoracolumbar fascia (TLF) - most fibres
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9th to 12th ribs
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Torso
Internal Oblique
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MUSCULOSKELORDLE
Anatomy muscle guessing game
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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