pelvis & thigh

Question 1

Quadriceps femoris

Answer 1

O: rectus femoris: anterior inferior iliac spine (AIIS)
Vastus medialis (teardrop): medial lip of linea aspera
vastus lateralis: Lateral lip of linea aspera, gluteal tuberosity and greater trochanter
vastus intermedius: anterior and lateral shaft of the femur
I: tibial tuberosity (via the patella and patellar ligament
F:
Art coxea: flexion
Art genus: extension

Question 2

Hamstrings

Answer 2

Biceps femoris
O: long head: ischial tuberosity
O: short head: lateral lip of linea aspera
I: head of the fibula
F: Flex the knee (tibiofemoral joint)
Laterally rotate, external rotation of the flexed knee (T/F joint)
Extend the hip ( coxal joint)
Assist to laterally rotate the hip (coxal jont)
Tilt the pelvis posteriorly

Semitendinosous
O: Ischial tuberosity
I: proximal medial shaft of the tibia at pes anserinus tendon
F: Flex the knee (tibiofemoral joint)
Medially rotate the flexed knee (T/F joint)
Extend the hip (coxal joint)
Assist to medially rotate the hip (coxal joint)
Tilt the pelvis posteriorly

semimembranosus
O: ischial tuberosity
I: posterior aspect of medial condyle of tibia
F: Flex the knee (tibiofemoral joint)
Medially rotate the flexed knee (T/F joint)
Extend the hip (coxal joint)
Assist to medially rotate the hip (coxal joint)
Tilt the pelvis posteriorly

Question 3

Gluteus maximus

Answer 3

O: Coccyx, edge of sacrum, posterior iliac crest, sacrotuberous and sacroiliac ligaments
I: Iliotibial tract (upper fibers) and gluteal tuberosity (lower fibers)
F:
All fibers:
Extend the hip (coxal joint)
Laterally rotate the hip (coxal oint)
abduct the hip (coxal joint)

Lower fibers:
Adduct the hip (coxal joint)

Question 4

Gluteus medius

Answer 4

O: gluteul surface of ilium, between posterior and anterior gluteal lines, just below the iliact crest
I: lateral aspect of trochanter major
F:
All fibers: abduct the hip (coxal joint)
Anterior fibers:
Flex the hip (coxal joint)
medially rotate the hip (coxal joint)
Posterior fibers:
Extend the hip (coxal joint)
laterally rotate the hip (coxal joint)**

Question 5

Adductor magnus

Answer 5

O: inferior ramus of the pubis, ramus of ischium and ischial tuberosity
I: medial lip of linea aspera and adductor tubercle
F: Adduct the hip, medially rotate the hip and assist to flex the hip,
Posterior fibers: extend the hip

Question 5

Gluteus minimus

Answer 5

O: gluteul surface of the ilium between the anterior and inferior gluteal lines
I: anterior aspect of greater trochanter
F: Abduct the hip (coxal joint
Medially rotate the hip (coxal joint)
Flex the hip (coxal joint)

Question 6

adductor longus

Answer 6

O: pubic tubercle
I: Medial lip of linea aspera
F: Adduct the hip, medially rotate the hip and assist to flex the hip

Question 7

adductor brevis

Answer 7

O: inferior ramus of pubis
I: pectineal line and medial lip of linea aspera
F: Adduct the hip, medially rotate the hip and assist to flex the hip

Question 8

pectineus

Answer 8

O: superior ramus of pubis
I: pectineal line of femur
F: Adduct the hip, medially rotate the hip and assist to flex the hip

Question 9

Gracilis

Answer 9

O: inferior ramus of pubis
I: proximal, medial shaft of tibia at pes anserinus tendon
F: Adduct the hip, medially rotate the hip and knee, flex the knee