Exam 4 Hip joint Part 1 Hip joint

Question 1

Articulating surface of the hip joint are:

Answer 1

Head of the femur with the acetabulum of the pelvis

Question 2

Articulating surface of the acetabulum is horseshoe shaped & is deficient inferiorly at the:

Answer 2

Acetabular notch

Question 3

The cavity of the acetabulum is deepened by the presence of the _________ _______ , which increases the depth of the articulation by about 10%

Answer 3

Acetabular labrum

Question 4

The part of the acetabular labrum which bridges the notch is known as the:

Answer 4

Transverse acetabular ligament

Question 5

The hip joint is classified as what type of joint:

Answer 5

Ball & socket joint

Question 6

Ligaments of the Hip Joint:(5)

Answer 6

1. Iliofemoral
2. Pubofemoral
3. Ischiofemoral
4. Transverse Acetabular ligament
5. Capitis Femoris Ligament

Question 7

• Surrounds the entire hip joint
• Strong, fairly loose capsular ligament permits free movement at the hip joint but cannot maintain the integrity of the joint w/o reinforcing ligaments

Answer 7

Capsular

Question 8

• Reinforces the capsular lig. anteriorly & posteriorly
• Strongest lig in the body
• Attaches to the AIIS (superiorly) & to the interochanteric line (inferiorly)
• Becomes tight upon full extension of the femur
• Literally “screws” the head of the femur into the acetabulum

Answer 8

Iliofemoral Ligament

Question 9

Nerve Supply to the hip joint:

Answer 9

Femoral nerve
Obturator nerve
Sciatic nerve

Question 10

• Reinforces the capsule ant. & inferiorly
• Attaches from the Superior ramus of the pubis (superiorly) to the intertrochanteric line (inferiorly)
• Prevents ABDUCTION @ the hip joint

Answer 10

Pubofemoral

Question 11

• Reinforces the capsule posteriorly
• Runs from the body of the ischium (superiorly) to the neck & greater trochanter of the femur (inferiorly)
• Prevents HYPERextension & ABDuction @ the hip joint

Answer 11

Ischiofemoral

Question 12

• Intrinsic lig. which is formed by the acetabular labrum as it bridges the acetabular notch
• Lig. converts the notch into a tunnel, through which blood vessels & nerves enter the joint

Answer 12

Transverse Acetabular Ligament

Question 13

• Weak intrinsic lig. which function mainly to conduct a blood vessel to the head of the femur
• It is of little importance in strengthening the joint

Answer 13

Capitis femoris ligament (lig. of the head of the femur)