ANA125 LE2: Hip Bone Joints

features of the femur

• largest weightbearing bone

• built for locomotion

• landmarks are made for ligament attachments

where does the intertrochanteric line lie

between both trochanters ANTERIORLY

where does the intertrochanteric crest lie

between trochanters POSTERIORLY

fovea capitis

where the ligament of the head of the femur attaches to

ligament of the head of the femur

• protects the femoral artery branch

• nourishes the femur

• intercapsular ligament

movement triaxial joints permit

movement within all 3 planes and around all 3 axes

1. flexion and extension

2. abduction and adduction

3. medial and lateral rotation

what is the hip joint formed by

femoral head and acetabulum of pelvis

lunate surface

• acetabular cartilage

• deepens socket

• increase contact area for femur

• lubricates joint

acetabulum labrum

• made of fibrous cartilage

• horseshoe-shaped

• deepens socket

• holds femoral head firmly

transverse acetabular ligament

• spans the gap of the acetabulum which completes the socket, securing the femoral head

• allows blood vessels and nerves to run through, nourishing the femoral head and neck

• assists in weight-bearing

iliofemoral ligament attachments and function

attachments:

• AIIS

• intertrochanteric line

function:

• flexion and extension

• limits excessive abduction

pubofemoral ligament

attachments:

• pubic bone

• intertrochanteric line

function

• abduction and adduction

iliofemoral ligament

Attachments:

• AIIS

• Interochanteric line

Function:

Flexion and extension

ischiofemoral ligament

attachments:

• ischial tuberosity posteriorly

• intertrochanteric line anteriorly

function:

medial and lateral rotation

sacroiliac joint

• stable and barely moving

• where pelvis joins with sacrum

Function of sacrospinous and sacrotuberous ligament

• Provides stability to sacroiliac joint

• Creates full openings on pelvis