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24 Cards in this Set
- Front
- Back
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PSOAS MAJOR
Insertions |
PROXIMAL
Superficial: T12-L4 and associated IV disks (lateral surface) Deep: L1-L5 vertebrae TP DISTAL fuses with Iliacus as they course deep to inguinal ligament to form iliopsoas and attaches to the Lesser Trochanter |
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PSOAS MAJOR
Innervations |
Primarily L2
- Direct branches from the Lumbar plexus L2-L4 |
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PSOAS MAJOR
Action |
Primary: Hip Flexion
Hip joint: flexion and external rotation Lumbar Spine: Unilateral (with femur fixed): ipsilateral side bending Bilateral: raises te trunk from supine position |
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ILIACUS
Insertions |
PROXIMAL
Iliac Fossa DISTAL fuses with psoas major as it passes deep to the inguinal ligament to form the iliopsoas and attaches to the lesser trochanter. |
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ILIACUS
Innervation |
Primarily L2
Femoral nerve L2-L4 |
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ILIACUS
Action |
Principally: Hip Flexor
Hip joint: flexion and external rotation Lumbar Spine: - Unilateral: ipsilateral bending - Bilateral: raises trunk from the supine position |
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Iliopsoas is assisted by what muscle to do hip flexion
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rectus femoris - part of the quadriceps femoris
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Iliopsoas forms the floor of the...
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femoral triangle
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GLUTEUS MAXIMUS
Insertions |
PROXIMAL
1) Sacrum (dorsal surface lateral part) 2) Ilium (gluteal surface, Posterior part) The gluteal line closest to the PSIS (3) Thoracolumbar Fascia) 4) Sacrotuberous Ligament DISTAL Upper Fibers: iliotibial tract Lower Fibers: gluteal tuberosity |
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GLUTEUS MAXIMUS
innervation |
inferior gluteal L5-S2
This nerve only innervates GM |
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GLUTEUS MAXIMUS
Action |
Primary: Power extensor of the flexed thigh at the hip. It also externally rotates the thigh at the hip
Entire Muscle: extends and externally rotates the hip in sagital and coronal planes Upper Fibers: ABduction Lower Fibers: ADduction |
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GLUTEUS MEDIUS
Insertions |
PROXIMAL
Ilium (gluteal surface below the iliac crest <> the anterior and posterior gluteal line) DISTAL Greater Trochanter of the Femur (Lateral Surface) |
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GLUTEUS MEDIUS
Innervation |
Superior Gluteal L4-S1
also innervates the Gluteus Minimus and Tensor Fasciae Latae |
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GLUTEUS MEDIUS
Action |
Entire Muscles: ABducts the hip when the leg is freely mobile, stabilizes the pelvis in the coronal plane during normal weight bearing
Anterior Part: Flexion and internal Rotation Posterior Part: extension and external rotation |
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GLUTEUS MINIMUS
Insertions |
PROXIMAL
Ilium (gluteal surface below the origin of the Gluteus Medius) DISTAL Greater Trochanter of the Femur (anterolateral surface) |
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GLUTEUS MINIMUS
Innervation |
Superior Gluteal Nerve L4-S1
Also innervates Gluteus Medius and Tensor Fasciae Latae |
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GLUTEUS MINIMUS
Action |
Entire Muscle:
ABducts the hip when the leg is freely mobile, stabilizes the pelvis in coronal plane during normal weight bearing Anterior Part: Flexion and Internal rotation Posterior Part: extension and external rotation |
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TENSOR FASCIAE LATAE
Insertions |
PROXIMAL
Anterior Superior Iliac Spine (inferior to Sartorius) DISTAL Iliotibial Tract |
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TENSOR FASCIAE LATAE
Innervations |
Superior Gluteal Nerve L4-S1
Also innervates Gluteus Medius and Gluteus Minimus |
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TENSOR FASCIAE LATAE
Actions |
Tenses the fascia lata
Hip Joint: ABduction, flexion (weakly), and internal rotation (weakly) |
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PIRIFORMIS
Insertions |
PROXIMAL
Pelvic Surface of the Sacrum DISTAL Apex of the of the Greater Trochanter of the Femur |
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PIRIFORMIS
Innervations |
Direct Branches from the Sacral Plexuses S1-S2
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PIRIFORMIS
Actions |
1) External rotation
2) ABduction 3) Extension of the Hip Joint 4) Stabilizes the Hip One of five small lateral rotators of the the thigh which lie deep to GM 1) PirIformis 2) Obturator Internus 3) Superior Gemellus 4) Inferior Gemellus 5) Quadratus Femoris |
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PIRIFORMIS
Pathway |
Starts anteriorly on the Sacrum but not on the Sacral Foramen. Goes through the Great Sciatic Foramen and attaches to the apex of the Greater Trochanter
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