Chapter Five: The Lower Limb Hip Joint

Question 1

hip joint

Answer 1

• hip is a secure ball and socket joint
• superficially similar to the shoulder joint
• much more stable and less mobile

Question 2

movements of the hip joint

Answer 2

• flexion and extension
• adduction and abduction
• medial and lateral rotation

Question 3

bony parts of hip joint

Answer 3

• head of femur is two thirds of a ball and fits into acetabulum securely
• acetabulum is augmented in two ways
• inferior deficiency, the acetabular notch: is filled by a ligament (transverse acetabular ligament)
• lip of fibrocartilage around the socket: the acetabular labrum

Question 4

synovial and fibrous capsule of the hip joint

Answer 4

• synovial capsule runs from the edge of the acetabulum to the base of the femoral neck
• fibrous capsule is thickened into three ligaments

Question 5

iliofemoral ligament

Answer 5

• most important
• has an inverted V shape running rom the AIIS to the intertrochanteric line
• prevents hyperexternsion

Question 6

pubofemoral and ischiofemoral ligaments

Answer 6

• less important
• protect the medial and posterior aspects of the joint

Question 7

blood and nerve supply of the hip bone

Answer 7

• major anastomosis around the hip joint, receiving branches from the obturator artery, the superior and inferior gluteal arteries and the medial and lateral femoral circumflex arteries (branches of the femoral artery)
• small artery that runs from the deepest part of the acetabulum to the head of the femur, running into the depression in the head the fovea capitis
• innervation of the joint is from all the nerves that cross the joint