pelvis & thigh Flashcards
Quadriceps femoris
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
Hamstrings
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
Gluteus maximus
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)
Gluteus medius
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)**
Adductor magnus
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
Gluteus minimus
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)
adductor longus
O: pubic tubercle
I: Medial lip of linea aspera
F: Adduct the hip, medially rotate the hip and assist to flex the hip
adductor brevis
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
pectineus
O: superior ramus of pubis
I: pectineal line of femur
F: Adduct the hip, medially rotate the hip and assist to flex the hip
Gracilis
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