Muscles tht move the pelvic girdle and lower limbs

Axial and Appendicular muscles

Location, Origin, Insertion, and Action of sartoius

Location: obliquely crosses the anterior aspect of the thigh *longest muscle

Origin: anterior superior iliac spine

Insertion: medial side of tibial tuberosity

Action: flexes acetabulofemoral joint and laterally rotates femoral region. flexes tibiofemoral joint and medially rotates crural region ( hacky sack motion) 

Location and Action of Gracilis

Location: medial surface of thigh

Action: Adducts and flexes femoral region at acetabulofemoral joint flexes crural region at tibiofemoral joint.

Location, Origin, Inseriton, and Action of tensor fascia latae

Location: attaches to iliotibial tract (IT band)

Origin: iliac crest an lateral surface of anterior superior iliac spine 

Insertion: IT band 

Action: abducts and medially rotates femoral region at acetabulofemoral joint 

Location, Origin, Insertion, and Action of Gluteus Maximus

Location: Buttocks muscle

Origin: iliac crest, sacrum, an coccyx 

Insertion: IT band linea aspera of femur and gluteal tuberosity of femur. 

Action: chief extensor of femoral region extends and rotates femoral region laterally 

Location of piriformis

deep to gluteus maximus

Location, insertion, and Action of iliacus and psoas major 

Location: interanl cavity lumbar region and fossa of ilium 

Insertion: lesser trochanter 

Action: strongest flexor of the hip

Location, Origin, Insertion, Action, and Synergistic of rectus femorus 

Location: superficial (middle ) anterior thigh

Origin: anterior inferior iliac spine

Insertion: quadriceps tendon to patella then patellar ligament to tibial tuberosity 

Action: Extends leg at tibiofemoral joint 

Synergistic: all 

Location, Origin, Insertion, Action, and Synergistic of vastus lateralis 

Location: anterolateral surface of thigh 

Origin: greater trochanter and linea aspera of femur 

Insertion: quadriceps tendon to patella then patellar ligament to tibial tuberosity

Action: Extends leg at tibiofemoral joint

Synergistic: all

Location, Origin, Insertion, Action, and Synergistic of vastus medialis 

Location: antermedial surface of thigh 

Origin: intertrochanter line and linea aspera of femur 

Insertion: quadriceps tendon to patella then patellar ligament to tibial tuberosity

Action: Extends leg at tibiofemoral joint

Synergistic: all

Location, Origin, Insertion, Action, and Synergistic of vastus intermedius

Location: deep to rectus femoris

Origin: anterior adn lateral surface of femur

Insertion: quadriceps tendon to patella then patellar ligament to tibial tuberosity

Action: Extends leg at tibiofemoral joint

Synergistic: all

Location, Origin, Insertion, Action, and Synergistic of biceps femoris 

Location: posterior lateral surface of thigh 

Origin: 

Long head - ischial tuberosity 

Short head - linea aspera of femur 

Insertion: head of fibula

Action: Extends femoral region and flexes crural at tibiofemoral joint 

Biceps femoris - laterally rotates crural 

Synergistic: all  

Location, Origin, Insertion, Action, and Synergistic of semitendinosus 

Location: posterior medial surface of thigh 

Origin: ischial tuberosity

Insertion: medial side of tibial tuberosity 

Action: Extends femoral region and flexes crural at tibiofemoral joint

Semitendinsus - medially rotate crural

Synergistic: all 

Location, Origin, Insertion, Action, and Synergistic of semimembranosus

Location: deep and medial to semitendinosus

Origin: Ischial Tuberosity 

Insertion: posterior surface of medial condyl e of tibia

Action: Extends femoral region and flexes crural at tibiofemoral joint

semimembranosus - medially rotate crural

Synergistic: all

Location, and Action of Tibialis Anterior

Location: anterior lateral portion of tibia

Action: primary dorsiflexor of foot - inverts foot 

Location and Action of extensor digitorum longus 

Location: between tibialis anterior and fibularis longus 

Action: Dorsiflexion of the foot extends toes 2-5 

Location and Action of peroneus longus

Location: superficial lateral , covers fibula 

Action: plantar flexes and everts foot at tolocrural region 

Location, Origin, Insertion, and Action of Gastrocnemius

Location: calf muscle

Origin: two heads superior posterior lateral and medial condyle of femur

Insertion: calcaneus via the calcaneal (achilles) tendon

Location and Action of soleus

Location: deep to gastrocnemius

Action: plantar flexes foot at talocrural region