Psoas

Front 1

Rectus Femoris Muscle

Back 1

Origin: Anterior inferior iliac spine of the ilium and grove (posterior) above the acetabulum
Insertion: Superior aspect of the patella and patellar tendon to the tibal tuberosity
Action: Flexion of the hip, Extension of the knee, and Anterior pelvic rotation
Innervation: Femoral nerve( L2-L4)

Front 2

Sartorius Muscle

Back 2

Origin: Anterior Superior iliac spine and notch just below the spine
Insertion: Anterior medial surface of the tibia just below the condyle
Action: Flexion of the hip, Flexion of the knee, and External rotation of the thigh as flexes the hip and knee, Abduction of the hip, Anterior pelvic rotation, Weak internal rotation of the knee
Innervation: Femoral nerve(L2,L3)

Front 3

Pectineus Muscle

Back 3

Origin: Space 1-inch wide on the front of the pubis just above the crest( pectineal line)
Insertion: Rough line leading from the lesser trochanter down to the lines aspera( pectineal line of the femur)
Action: Flexion of the hip, Adduction of the hip, External rotation of the hip, Anterior pelvic rotation
Innervation: Femoral nerve (L2-L4)

Front 4

Adductor Brevis Muscle

Back 4

Origin: Front of the inferior pubic ramus just below the origin of the adductor longus
Insertion: Lower 2/3 of the pectineal line of the femur and upper half of the medial lip of the linea aspera
Action: Adduction of the hip, Exertnal rotation as it adducts the hip, Assists in flexion of the hip, Assists in anterio pelvic rotation
Innervation: Obturatot nerve(L3,L4)

Front 5

Adductor Longus Muscle

Back 5

origin: Anterior pubis just below its crest
Insertion: Middle third of the linea aspera
Action: Adduction of the hip, Assists in flexion of the hip, Assists in anterior pelvic rotation
Innervation: Obturator nerve(L3,L4)

Front 6

Adductor Magus Muscle

Back 6

Origin: Edge of the entire ramus of the pubis and the ischium and ischial tuberosity
Insertion: Whole Lenght of the linea aspera, inner condyloid ridge, and adductor tubercle
Action: Adduction of the hip, external rotation as the hip adducts, and Extension of the hip
Innervation: Anterior nerve(L2-L4) and Posterior: sciatic nerve(L4,L5,S1-S3)

Front 7

Gracilis Muscle

Back 7

Origin: Anteromedial edge of the descending ramus of the pubis
Insertion: Anterior medial surface of the tibia just below the condyle
Action: Adduction of the hip, Weak flexion of the knee, internal rotation of the hip, Assists with flexion of the hip, Weak internal rotation of the knee
Innervation: Obturator nerve(L2-L4)

Front 8

Semitnedinosus Muscle

Back 8

Origin: Ischial tuberosity
Inserton: Anterior medial surface of the tibia just below the condyle
Action: Flexion of the knee, Extension of the hip, internal rotaion of the hip, internal rotation of the flexed knee, Posterior pelvic rotation
Innervation:Sciatic nerve-Tibial divison ( L5,S1,S2)

Front 9

Semimembranosus Muscle

Back 9

Origin: Ischial tuberosity
Insertion: Posteromedial surface of the medial tibial condyle
Action: Flexion of the hip, Extensionof the hip, Internal rotation of the hip, internal rotation of the flexed knee, and Posterior pelvic rotation
Innervation: Sciatic nerve- Tibial division( L5,S1,S2)

Front 10

Biceps Femoris Muscle

Back 10

Origin: Long Head- ischial tuberosity; Short head: lower half of the inea aspera, and lateral condyloid ridge
Insertion: Lateral condyle of the tibia and head of the fibual
Action: Flextion of the knee, Extension of the hip, External rotation of the hip, External rotation of the flexed knee, and Posteriof pelvic rotation
Innervation: Long head(Sciatic nerve-tibial division(S1-S3); Short head(Sciatic nerve-peroneal divison(L5,S1,S2)

Front 11

Gluteus Maximus Muscle

Back 11

Posterior 1/4 of the cest of the ilium, posterior surface of the sacrum and coccyx near the ilium, and fascia of the lumbar area
Insertion: Oblique ridge( gluteal tuberosity) on the lateral surface of the greater trochanter and the iliotibial band of the fasciae latae
Action: Extension of the hip,External rotation of he hip, upper fibers assist in hip abduction, lower fibers assist in hip adduction, and Posterior pelvic rotation
Innervation: Inferior gluteal nerve(L5,S1,S2)

Front 12

Gluteus Medius Muscle

Back 12

Origin: Lateral surface of the ilium just below the crest
Insertion: Posterior and middle surfaces of the greater trochanter of the femur
Action: Abduction of the hip, Lateral pelvic rotation to ipsilateral side, Anterior fibers: internal rotation, flexion of the and anterior pelvic rotation, Posterior fibers: external rotation, extension of the hip, and posterior pelvic rotation
innervation: Superior gluteal nerve(L4,L5,S1)

Front 13

Gluteus Minimus Muscle

Back 13

Origin: Lateral surface of the ilium just below the origin of the gluteus meduis
Insertion: Anterior surface of the greater trochanter of the femur
Action: Abduction of the hip, Lateral pelvic rotation to ipilateral side, internal rotation as the femur abducts, flexion of the hip,Anterior pelvic rotation
Innervation: Superior gluteal nerve( L4, L5,S1)

Front 14

Tensor Fasciae Latae Muscle

Back 14

Origin: Anterior iliac crest and surface of the ilium just below the crest
insertion: 1/4 of the way down the thigh into the iliotibial tract, which in turn inserts onto Gerdy's tubercle of the anterolateral tibial condyle
Action: Abduction of the hip, flexion of the hip, Tendency to rotate the hip internally as it flexes, Anterior pelvic rotation
Innervation:
Superior Gluteal nerve (L4,L5,S1)