Flashcards in 1.2.4. Stabilizing Factors of the Hip Joint Deck (16)
What is the primary function of the Hip Joint?
What factors help to stabilize the Hip Joint?
1. The Acetabulum Depth
2. The Acetabular Labrum
What, about the Acetabulum, helps stabilize the Hip Joint?
It is Deep, encompassing nearly all of the Head of the Femur
How does the Depth of the Acetabulum help in stabilizing the Hip Joint?
It decreases the chance of the Head of the Femur slipping out (Hip Dislocation)
What is the Acetabular Labrum?
A Fibrocartilaginous Collar around the Acetabulum
What does the Acetabular Labrum do?
Further increases the Depth of the Hip Joint
What advantage does the increase in Depth, due to the Acetabular Labrum, bring?
An increased articulating surface area, increasing the stability of the Hip Joint
How many stabilizing Ligaments of the Hip Joint are there?
What are the 3 stabilizing Ligaments of the Hip Joint?
1. Iliofemoral Ligament
2. Pubofemoral Ligament
3. Ischiofemoral Ligament
How do Ligaments help stabilize the Hip Joint?
They are very strong and prevent hyperextension of the Hip Joint
What orientation are the stabilising ligaments of the hip joint in?
They are arranged in a spiral orientation
What is the advantage of the stabilizing Ligaments being arranged in a spiral orientation?
They become tighter as the joint is extended
What works in a reciprocal fashion with the Ligaments of the Hip Joint?
Muscles of the Hip Joint
Which, Muscles or Ligaments, are more prevalent (stronger) Anteriorly?
1. Ligaments are strongest
2. Medial Flexors (located anteriorly) are fewer and weaker
Which, Muscles or Ligaments, are more prevalent (stronger) Posteriorly?
1. Ligaments are weakest
2. Medial Rotators are greater in number and stronger