Hip and Thigh (chart) Flashcards
Chart
the iliofemoral ligament attaches?
ASIS and acetabulum -> intertochanteric line (strong, y-shaped ligament)
the ischiofemoral ligament attaches?
acetabular rim -> circles superiorly and laterally to medial base of greater trochanter.
the pubofemoral ligament attaches?
pubic ramus -> laterally and inferiorly to joint capsule
the transverse acetabular ligament attaches?
joins inferior ends of labrum, crosses acetabular notch
the ligament of the head of femur attaches?
acetabular notch -> fovea of femur (intracapsular but extrasynovial)
what is the function of the iliofemoral ligament?
prevents hypertension
what is the function of the ischiofemoral ligament?
prevents hypertension, screws femoral head into acetabulum
what is the action of the pubofemoral ligament?
tightens during extensions and abduction, limits abduction
what is the function of the transverse acetabular?
completes the acetabular ring
what is the function of the ligament of head of femur?
contains artery to head of femur (minute in adults)
what is the P.O. of gluteus maximus?
ilium posterior to posterior gluteal line, dorsal surface of sacrum and coccyx, sacrotuberous ligaments
what is the D.I. of the gluteus maximus?
most fibers end in iliotibial tract that inserts into lateral condyle of tibia; some fibers insert into gluteal tuberosity of femur.
what is the innervation of the gluteus maximus?
inferior gluteal nerve (L5 - S2)
what is the action of the gluteus maximus?
extends fixed thigh, assists in lateral rotation, and abducts thigh
what is the P.O. of gluteus medius?
lateral surface of ilium b/w anterior and posterior gluteal lines
what is the D.I. of the gluteus medius?
lateral surface of greater trochanter of femur
what is the innervation of the gluteus medius, tensor fasciae latae, and gluteus minimus?
superior gluteal nerve (L4 - S1)
what is the action of the gluteus medius?
abducts and medially rotates thigh at hips; steadies pelvis on leg when opposite leg is raised
what is the P.O. of gluteus minimus?
lateral surface of ilium b/w anterior and inferior gluteal lines
what is the D.I. of the gluteus minimus?
anterior surface of greater trochanter of femur
what is the action of the gluteus minimus?
abducts and medially rotates thigh at hips; steadies pelvis on leg when opposite leg is raised
what is the P.O. of piriformis?
anterior surface of sacral segments 2 -4, sacrotuberous ligament
what is the D.I. of the piriformis?
superior border of greater trochanter of femur
what is the innervation of the piriformis?
anterior rami of upper L5. S1, S2
what is the action of the piriformis and obturator internus?
laterally rotates extended thigh, abducts flexed thigh at hip
what is the P.O. or the obturator internus?
pelvic surface of obturator membrane and surrounding bone
what is the D.I. of the obturator internus, superior gemellus, and inferior gemellus?
medial surface of greater trochanter of femur
what is the innervation of the obturator interns and superior gemellus?
nerve to obturator internus muscle (L5 - S2)
what is the P.O. of the superior gemellus?
outer surface of ischial spine
what is the action of the superior gemellus and inferior gemellus?
laterally rotates extended thigh at the hip
what is the P.O. of the inferior gemellus?
upper margin of ischial tuberosity
what is the innervation of the inferior gemellus and quadratus femoris?
nerve to quadratus femoris muscle (L4 - S1)
what is the P.O. of the quadratus femoris?
lateral margin of ischial tuberosity