Flashcards in Basic Anatomy - Lower Extremities Deck (68)
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Rectus femoris: origin
Anterior iliac spine - function: flex at hip joint and extend at knee joint
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Quadriceps/Patellar tendon - common insertion of what thigh muscles?
Quadriceps femoris
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Common insertion of Iliacus and Psoas muscles
Lesser trochanter of femur
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Thigh has three compartments: if the anterior compartment were flexors then the medial compartment would be?
ADDUCTORS - posterior were extensors
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Medial thigh compartments - adducts the thigh is innervated by what nerve?
Obturator nerve
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All are medial thigh muscles except:
Adductor longus, Adductor brevis, Gracilis, Pectineus, Adductor magnus
Pectineus - anterior thigh muscle
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Common insertion of adductor muscles
Linea aspera of femur
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Adductor tubercle of femur is the insertion of hamstring part of
Adductor magnus - both has adductor and extensor function
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Nerve blocked during s femoral vein catheterization
Genitofemoral nerve
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Anterior thigh muscles : flexors of the thigh and extensors of the leg is innervated by?
Femoral nerve
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Extensors of the thigh - posterior thigh muscles - flexor of the leg is innervated by?
Sciatic nerve
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Common origin of hamstring muscles
Ischial tuberosity
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Common origin of Gluteal muscles:
Outer surface of ilium
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What is the superior border of the femoral triangle (contains nerve, artery and vein of femoral branch)
Inguinal ligament
Medial - adductor longus
Lateral - sartorius
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Greater trochanter of femur is the common insertion for gluteal muscles except what muscles?
Gluteus maximus - gluteal tuberosity
Quadratus femoris - quadrate tubercle
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Lumbar plexus formed within the ___muscle by the ventral rami of L1-L4
Psoas major muscles
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Largest branch of lumbar plexus, lateral border of Psoas
Femoral nerve - L2, L3, L4 - supplies the muscles on the anterior thigh and skin on antero-medial aspect
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Quadriceps femoris is composed of what?
Rectus femoris
Vastus lateralis
Vastus medialis
Vastus intermedius
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Lumbosacral trunk is composed of
L4 joins L5
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Hernial sac of a femoral hernia is located?
BELOW and LATERAL to pubic tubercle
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Obturator nerve is from ___. Medial border of Psoas, supplies medial thigh muscles and skin on the medial aspect of the thigh
L2, L3 and L4
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Sacral plexus lies on the posterior pelvic wall in front of what muscle?
Piriformis muscle
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Sciatic nerve (L4-S3) leave the pelvis through ____ foramen
Greater Sciatic Foramen
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Superior gluteal (L4-S1) innervates the ___ muscles
Gluteus medius/ Gluteus minimus
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Inferior gluteal nerve (L5-S2) innervates the ___ muscle.
Gluteus maximus
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Sacral plexus is formed by the anterior rami of ___
L4 and L5 and S1 - S4
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Pudendal nerve is from?
S2, S3 and S4
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Lesion: weakend abduction of thigh by gluteus medius, " waddling gait", sagging of pelvis on the unsupported limb, (+) Trendelenburg sign
Superior gluteal nerve injury
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Patient had an accident resulting to weakness in the ability to laterally rotate and extend the thigh at hip joint. Has difficulty extending the thigh from flexed position: climbing stairs and rising from a chair. What lesion and muscle involved?
Inferior gluteal nerve injury - affecting the Gluteus maximus
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