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Hip Muscles
Unit 20- Hip Muscles
33
Anatomy
Undergraduate 2
12/05/2009

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Term
External Rotators
Definition
-Toe towards outside
Piriformis
Gemellus superior
Gamellus inferior
Obturator internus
Obturator externus
Quadratus femoris
Gluteus maximus
Illiopsoas
Term
Internal Rotators
Definition
-Toe towards inside
Gluteus medius
Gluteus minimus
Tensor fascia latae
Pectineus
Adductor longus
Adductor magnus
Term
Extenors
Definition
-Posterior Thigh
-Kicking towards back
Gluteus maximus
Biceps femoris
Semitendinosus
Semimembrinosus
Adductor magnus
Term
Flexors
Definition
-Anterior Thigh
-Kicking towards front
Iliopsoas
Pectineus
Tensor fascia latae
Adductor brevis
Adductor longus
Adductor magnus
Rectus femoris
Sartorius
Term
Abductors
Definition
-Lateral Thigh
-Away from body
Gluteus medius
Gluteus minimus
Tensor fascia latae
Sartorius
Term
Adductors
Definition
-Medial Thigh
-Back to anatomical position
Adductor brevis
Adductor longus
Adductor magnus
Gracilis
Pectineus
Term
Piriformis
Definition
Action: External rotation, Flexion, Adduction
Term
Gemellus superior
Definition
Action: External rotation
Term
Gemellus inferior
Definition
Action: External rotation
Term
Obturator internus
Definition
Action: External Rotation
Term
Obturator externus
Definition
Action: External rotation
Term
Quadratus femoris
Definition
Action: External rotation
Term
Gluteus maximus
Definition
Origin: Sacrum, iliac crest, coccyx
Insertion: Gluteal tuberosity of femur
Action: External rotation, extension
Term
Gluteus medius
Definition
-Largest, most powerful muscle of hip
Origin: Outer surface of ilium
Insertion: Greater trochanter of femur
Action: Internal rotation, Abduction
Term
Gluteus minimus
Definition
-Lies beneath gluteus maximus
-Key with locomotive activity- when one leg is on ground vs. in air
Origin: Outer surface of ilium
Insertion: Greater trocachanter of femur
Action: Internal rotation, abduction
Term
Biceps femoris
Definition
-runs on the lateral side of thigh
Origin: Long Head- Ischial tuberosity
Short Head- Linea aspera
Insertion: Head of fibula & lateral condyle of tibia
Action: Extension
Term
Semitendinosus
Definition
-Runs to the middle side of the thigh
Origin: Ischial tuberosity
Insertion: Anterior surface of tibia (pes anserine)
Action: Extension
Term
Semimembranosus
Definition
-Runs in the medial side of thigh
Origin: Ischial tuberosity
Insertion: Medial condyle of tibia
Action: Extension
Term
Iliopsoas
Definition
-Flexes the spine of legs are stabilized
-If spine is stabilized, flexes hip
-V-sit-Flexion of spine and hip at same time
Action: External rotation, flexion
Term
Tensor fasciae latae (TFL)
Definition
Origin: Iliac crest
Insertion: Iliotibial tract (band)- IT band injuriies
Action: Flexion, internal rotation, abduction
Term
Sartorius
Definition
-Longest muscle in body
Origin: Anterior superior iliac spine
Insertion: Anterior medial surface of tibia (pes anserine)
Action: Flexion, Abduction
Insertion: Patella and via pa
Term
Rectus femoris
Definition
-Kicking muscle
Origin: Anterior inferior iliac spine, ilium above acetabulum
Insertion: Patella and via patellar tendon to tibial tuberosity
Action: Flexion
Term
Pectineus
Definition
Action: Flexion, internal rotation, adduction
Term
Adductor longus
Definition
=palpated easily-groin strain
Action: Flexion, internal rotation, adduction
Term
Adductor brevis
Definition
-shorter
Action: Flexion, internal rotation, adduction
Term
Adductor magnus
Definition
-Largest
Action: Flexion, internal rotation, adduction
Term
Gracilis
Definition
-Common site for tendonitis
Action: Adduction
Term
Muscle Group on Medial Side of Thigh (Inner Thigh)
Definition
Adductor longus
Adductor brevis
Adductor magnus
Term
6 Deep External Rotators of Hip
Definition
Piriformis
Gemellus superior
Gemellus inferior
Obturator internus
Obturator externus
Quadratus femoris
Term
Hamstring Muscles
Definition
2-joint muscles
Action at hip and knee
Biceps femoris
Semitendinosus
Semimembranosus
Term
2-joint muscle flexors
Definition
Rectus femoris
Sartorius
Term
2-joint muscle abductors
Definition
Tensor fascia latae
Sartorius
Term
2-joint muscle adductors
Definition
Gracilis
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