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Flex thigh (hip): 1. Psoas major 2. Iliacus
Adductors - first 3 also flex thigh:1. Pectineus 2. Adductor longus -
rotates laterally3. Adductor magnus4. Gracilis – flexes knee
*Total of 5 anterior musclesthat flex thigh. Foreswing ofthigh when walking, running.
Muscles that move the thigh (hip joint) Muscles are attached to the pelvic girdle and femur.Anterior group muscles:
Posterior group muscles:
Extend thigh (hip):1. Gluteus maximus – largest muscle in the body.*Straightens leg at the hip when walking, running climbing; raises body from sitting position.
Abduct thigh - and rotate medially:
1. Gluteus medius 2. Tensor fasciae latae –
Flexes thigh
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Muscles That Move the ThighCopyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Psoas major
Psoas minor
Iliacus
Tensor fasciaelatae
Rectus femoris
Sartorius
Sartorius
Vastus lateralis
Vastus intermedius
Quadriceps femoristendon (patellar tendon)
Patella
Adductor longus
Pectineus
Adductor magnus
Gracilis
Vastus medialis
Patellarligament
Gracilis
Adductor brevis
Adductor longus
Iliacus
Psoas major
Psoas minor
(b)(a)
(g)(f)
(e)(d)(c)
Adductor magnus
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Muscles That Move the Thigh
Gluteus medius
Gluteus medius
Gluteus maximus
Gluteus maximus
Biceps femorisIliotibial tract (band)
Vastus lateralis
Rectus femoris
Sartorius
Tensor fasciae latae
Gluteus minimusPiriformis
(a)
(b) (c) (d)
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Muscles that Move the Leg (knee joint):This group connects the tibia or fibula to the femur or pelvic girdle.
Flexors: 1. Biceps femoris- rotates leg laterally
2. Semitendinosus- rotates leg medially 3. Semimembranosus- rotates leg medially
4. Sartorius (on the anterior side of the leg) – flexes hip
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An extensor of the knee is the
Quadriceps femoris group: (made up of four muscles): 1. Rectus femoris
2.Vastus lateralis3. Vastus intermedius4. Vastus medialis
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Muscles That Move the Leg
Adductor magnus
Gracilis
Semitendinosus
Semimembranosus
Semimembranosus
Sartorius
Gastrocnemius
Gluteus medius
Gluteus maximus
Biceps femoris
Semitendinosus
(a)
(b) (c)
Vastus lateraliscovered by fascia
Biceps femoris(short head)
Biceps femoris(long head)
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
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Muscles That Move the LegCopyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Semitendinosus
SemimembranosusGracilisSartorius
Gastrocnemius:
Medial headLateral head
Soleus
Calcaneal tendon
Flexor retinaculum
Calcaneus
Biceps femoris
Plantaris
Soleus
Gastrocnemius
(a)
(b) (c)
(d) (e)
Flexor digitorumlongus
Fibularretinacula
Fibularisbrevis
Fibularislongus
Iliotibial tract(band)
Flexor digitorumlongus
Tibialis posterior