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PTA Muscles

Anatomy of Muscles for PTA: O, I, A, N

QuestionAnswer
Tibialis Anterior Origin Lateral tibia and interosseous membrane
Tibialis Anterior Insertion First cuneiform and metatarsal
Tibialis Anterior Actions Dorsiflexion and Inversion of foot
Tibialis Anterior Nerve Innervation Deep Peroneal Nerve (L4, L5, S1)
Peroneus (fibularis) longus Origin Lateral proximal fibula and interosseous membrane
Peroneus (fibularis) longus Insertion Plantar surface of first cuniform and metatarsal
Peroneus (fibularis) longus Actions Eversion and plantar flexion
Peroneus (fibularis) longus Nerve Innervation Superficial Peroneal Nerve (L4, L5, S1)
Peroneus (fibularis) brevis Origin Lateral distal fibula
Peroneus (fibularis) brevis Insertion Base 5th metatarsal
Peroneus (fibularis) brevis Actions Eversion and plantar flexion
Peroneus (fibularis) brevis Nerve Innervation Superficial Peroneal Nerve (L4, L5, S1)
Biceps Femoris* (Hamstrings) long head Origin Ischial tuberosity
Biceps Femoris* (Hamstrings) long head Insertion Fibular head
Biceps Femoris* (Hamstrings) long head Actions Hip extension, knee flexion
Biceps Femoris* (Hamstrings) long head Nerve Innervation Sciatic nerve (S1-S3)
Biceps Femoris* (Hamstrings) short head Origin Lateral lip linea aspera
Biceps Femoris* (Hamstrings) short head Insertion Fibular head
Biceps Femoris* (Hamstrings) short head Action Knee flexion
Biceps Femoris* (Hamstrings) short head Nerve Innervation Common Peroneal (L5-S2)
Semitendinosus* (Hamstrings) Origin Ischial tuberosity
Semitendinosus* (Hamstrings) Insertion Pes Anserine tendon - Anteromedial proximal surface of tibia
Semitendinosus* (Hamstrings) Actions Hip extention, knee flexion
Semitendinosus* (Hamstrings) Nerve Innervation Sciatic (L5-S2)
Semimembranosus* (Hamstrings) Origin Ischial tuberosity
Semimembranosus* (Hamstrings) Insertion Posterior of medial condyle of tibia
Semimembranosus* (Hamstrings) Actions Hip extension, knee flexion
Semimembranosus* (Hamstrings) Nerve Innervation Sciatic (L5-S2)
Quadratus Femoris Origin Ischial tuberosity
Quadratus Femoris Insertion Intertrochanteric crest of femur
Quadratus Femoris Action Lateral rotation
Quadratus Femoris Nerve Innervation Nerve to Quadratus Femoris (L5, S1)
Piriformis Origin Sacrum
Piriformis Insertion Greater trochanter of femur
Piriformis Action Lateral rotation
Piriformis Nerve Innervation Nerve to Piriformis (L5-S2)
Gemellus Superior Origin Ischium
Gemellus Superior Insertion Greater Trochanter of femur
Gemellus Superior Action Lateral rotation
Gemellus Superior Nerve Innervation Nerve to Obturator internus (L5, S1)
Gemellus Inferior Origin Ischium
Gemellus Inferior Insertion Greater Trochanter of femur
Gemellus Inferior Action Lateral rotation
Gemellus Inferior Nerve Innervation Nerve to Obturator internus (L5, S1)
Gluteus Maximus Origin Posterior sacrum and ilium
Gluteus Maximus Insertion Posterior femur distal to greater trochanter and iliotibial (IT) band
Gluteus Maximus Actions Hip extension, lateral rotation and ABduction
Gluteus Maximus Nerve Innervation Inferior gluteal nerve (L5-S2)
Gluteus Medius Origin Outer surface of Ilium
Gluteus Medius Insertion Lateral surface of Greater Trochanter
Gluteus Medius Actions ABduction and Medial rotation
Gluteus Medius Nerve Innervation Superior gluteal nerve (L4-S1)
Gluteus Minimus Origin Lateral Ilium
Gluteus Minimus Insertion Anterior surface of Greater Trochanter
Gluteus Minimus Actions ABduction and Medial rotation
Gluteus Minimus Nerve Innervation Superior gluteal nerve (L4-S1)
IlioPsoas Origin Anterolateral surface T12-L5 and Iliac fossa
IlioPsoas Insertion Lesser trochanter of femur
IlioPsoas Action Hip Flexion, lateral rotation
IlioPsoas Nerve Innervation Femoral nerve (L2, L3)
Rectus Femoris* (Quads) Origin AIIS
Rectus Femoris* (Quads) Insertion Tibial tuberosity via patella tendon
Rectus Femoris* (Quads) Actions Hip flexion, knee extension
Rectus Femoris* (Quads) Nerve Innervation Femoral nerve (L2-L4)
Vastus Lateralis (Quads) Origin Linea aspera of femur
Vastus Lateralis (Quads) Insertion Tibial tuberosity via patella tendon
Vastus Lateralis (Quads) Action Knee extension
Vastus Lateralis (Quads) Nerve Innervation Femoral nerve (L2-L4)
Vastus Medialis (Quads) Origin Linea aspera of femur
Vastus Medialis (Quads) Insertion Tibial tuberosity via patella tendon
Vastus Medialis (Quads) Action Knee extension
Vastus Medialis (Quads) Nerve Innervation Femoral nerve (L2-L4)
Vastus Intermedius (Quads) Origin Anterior surface of femur
Vastus Intermedius (Quads) Insertion Tibial tuberosity via patella tendon
Vastus Intermedius (Quads) Action Knee extension
Vastus Intermedius (Quads) Nerve Innervation Femoral nerve (L2-L4)
Adductor Magnus Origin Ischium and Pubis
Adductor Magnus Insertion Entire Linea aspera and adductor tubercle
Adductor Magnus Action Hip Adduction
Adductor Magnus Nerve Innervation Obturator and Sciatic nerves (L3, L4)
Adductor Brevis Origin Pubis
Adductor Brevis Insertion Pectinal line and linea aspera
Adductor Brevis Action Hip Adduction
Adductor Brevis Nerve Innervation Obturator (L3, L4)
Adductor Longus Origin Pubis
Adductor Longus Insertion Middle 1/3 of linea aspera
Adductor Longus Action Hip Adduction
Adductor Longus Nerve Innervation Obturator (L3, L4)
Pectineus Origin Superior ramus of pubis
Pectineus Insertion Pectineal line of femur
Pectineus Action Hip Adduction and Hip flexion
Pectineus Nerve Innervation Femoral nerve (L2-L4)
Gracilis* Origin Pubis
Gracilis* Insertion Pes Anserine Tendon - Anteriomedial proximal surface of tibia
Gracilis* Action Hip Adduction
Gracilis* Nerve Innervation Obturator nerve (L2, L3)
Tibialis Posterior Origin Interosseous membrane
Tibialis Posterior Insertion Navicular, metatarsals and most tarsals
Tibialis Posterior Action Inversion
Tibialis Posterior Nerve Innervation Tibial nerve (L5, S1)
Gastrocnemius* Origin Lateral and Medial Condyles of Femur
Gastrocnemius* Insertion Calcaneus via Achilles Tendon
Gastrocnemius* Actions Plantar flexion and knee flexion
Gastrocnemius* Nerve Innervation Tibial nerve (S1, S2)
Soleus Origin Posterior tibia and fibula
Soleus Insertion Calcaneus via Achilles Tendon
Soleus Action Plantar flexion
Soleus Nerve Innervation Tibial nerve (S1, S2)
Obturator Externus Origin Rami of Pubis and Ischium
Obturator Externus Insertion Trochanteric Fossa
Obturator Externus Action Lateral rotation of femur
Obturator Externus Nerve Innervation Obturator nerve (L3, L4)
Obturator Internus Origin Rami of Pubis and Ischium
Obturator Internus Insertion Greater Trochanter
Obturator Internus Action Lateral rotation of femur
Obturator Internus Nerve Innervation Nerve to Obturator Internus (L5, S1)
Created by: 1237975324
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