Q5:Anatomy of Thigh, Hip, Pelvis Flashcards
Bones in the thigh, hip, pelvis
Femur
Pelvis
Longest & strongest bone
designed to permit maximum mobility & support during locomotion
Femur
2 innominate bones
sacrum
coccyx
innominate bones are composed of three bones that ossify & fuse early in life
illium
pubis
ischium
superiorly & posteriorly of the 3 bones that make up the innominate bones
ilium
anterior of the 3 bones that make innominate bones
pubis
inferiorly of the 3 bones that make up the innominate bones
ischium
lodged btwn the innominate bones is the (5 fused vertebrae)
sacrum (pelvis)
composed of 4 or 5 small, fused vertebral bodies that articulate with the sacrum
coccyx (pelvis)
Joints of the thigh, hip, & pelvis
hip
sacroiliac (SI) joint
head of femur w acetabulum of the innominate bone
surrounding the rim is the labrum
Ligaments that reinforce this joint are
- iliofemoral
- pubofemoral
- ischiofemoral
Hip joint
fibrocartilage surrounding the rim
labrum
strongest ligament in the body
prevents hyperextension, controls external rotation & ADDuction of thigh
(Y ligament of Bigelow)
Iliofemoral ligament
Prevents excessive ABDuction of thigh
pubofemoral ligament
prevents excessive internal rotation
ischiofemoral ligament
sacrum joined to other parts of pelvis by strong ligaments; allows small backward-forward movements
sacroiliac (SI) joint
Muscles of the thigh, hip, pelvis
Anterior thigh muscles
Posterior thigh muscles
Medial thigh muscles
Anterior hip muscles
Posterior hip muscles
anterior thigh muscles
sartorius
Quadriceps femoris group
Posterior thigh muscles
popliteus
hamstring group
Medial thigh muscles
gracilis
pectineus
3 ADDuctor muscles (adductor longus, brevis, magnus)
Anterior hip muscles
Iliacus & iliopsoas
Posterior Hip muscles
tensor fascia latae (TFL)
gluteus maximus
gluteus medius
gluteus minimus
6 deep outward rotators
6 deep outward rotators
piriformis
superior gemellus
inferior gemellus
obturatorius internus
obturatorius externus
quadratus femoris
Semimembranosus
Semitendinosus
ACTION
Flexion of knee
IR of hip
hip extension