Bones of Lower Limb Flashcards
Describe how body weight is transferred to lower limbs.
From vertebral column thru sacro-iliac joints to the pelvic girdle and from there through the hip joints to the femurs and then through the femurs to the knee joints, then from the knee joints to the ankle joint by the tibia, then from the ankle joint to the talus which distributes weight evenly between heel and forefoot when standing
Does the fibula bear weight?
No, it does not articulate with the femur and does not bear weight
Which bone is the keystone of a longitudinal arch formed by tarsal and metatarsal bones of each foot?
The talus
What is the direction of the femurs?
They are oblique, directed inferomedially
Which gender has more oblique femurs?
Females are slightly more oblique than those of males, reflecting the greater width of their pelvis
What bones fuse to form the hip bones?
Ilium, ischium, and pubis
At puberty, what separates these bones?
Triradiate cartilage
When does triradiate cartilage begin to disappear?
15 to 17 years of age
When is fusion complete between these bones?
20 to 25 years of age
Which bone is the superior and largest part of the hip bone?
Ilium
What does the ilium consist of?
Body, and an ala/wing
Which bone forms the poster-inferior part of the acetabulum and hip bone?
Ischium
Which bone forms the anterior part of the acetabulum and anteromedial part of the hip bone?
Pubis
Where do the right and left pubis articulate?
Pubic symphysis
What is the longest and heaviest bone in the body?
The femur
