Pelvic Girdle

Illium, Ischium, and Pubis fuse in the region of a cup-shaped cavity called

Acetabulum

7 tarsal bones, forming a group called the tarsus

Ankle is composed of

Lateral & medial condyles

Articulates with the tibia of the leg

Medial Malleolus

At the distal end, the tibia expands to form a prominence on the inner ankle called

Pelvic Girdle

Consists of 2 coxal bones (hip bones), which artculate with each other anteriorly and with the sacrum posteriorly. -supports the trunk of the body -provides attachments for lower limbs -protects the urinary bladder, the distal end of the large intestine, and the internal reproductive organs

Foot

Consists of an ankle, instep, and 5 toes

Pubis

Constitutes the anterior portion of the coxal bone

Coxal Bone

Develops from 3 parts 1. Illium 2. Ischium 3. Pubis

Depression, on the lateral surface of the hipbone, receives the rounded head of the

Femur

Lower Limb

Form the frameworks of the thigh, leg, and foot

Ischium

Forms the lowest portion of the coxal bone L-shaped

Just below the head is a neck, and 2 large processes

Greater trochanter: superior Lesser trochanter: inferior -both provide attachments for muscles of the legs & buttocks

Calcaneus

Heel bone -largest anklebone -forms the base of the heel

Femur

Thighbone, the longest bone in the body -Extends from the hip to the knee -A large, rounded head at its proximal end projects medially into the acetabulum

Sacrum, coccyx, and pelvic girdle

Together for the ringlike pelvis

Illium

the largest and most superior portion of the coxal bone, flares outward, forming the prominence of the hip, called the ilia crest

Female v Male

-Illiac bones are more flared in women -Female pubic arch is wider -More distance between ischial spines in women -Female pelvis is usually lighter, more delicate than men

Fovea capitis

A pit marking ligament attachment

Obturator foramen

Largest foramen in the body

Fibula

Long, slender bone located on the lateral side of the tibia -Ends are slightly enlarged into a proximal head & a distal lateral malleolus, which articulates with the ankle and forms a prominence on the lateral side

Talus

Moves freely, joins the tibia and fibula

Anteriorly

Projection of the ilium, the anterior superior iliac spine, can be felt lateral to the groin (important surgerical landmark)

Tibia

Shinbone, the larger of the 2 leg bones -located on the medial side -medial

Phalanges

Similar to the fingers, and align and articulate with the metatarsals -proximal -middle -distal

The two pubic bones come together at the midline to form joint called the

Symphasis pubis

Pubic arch

The angle below the symphysis is the

Posteriorly

The ilium joins the sacrum at the sacroilliac joint