Anatomy - Hip Joint Flashcards
What type of joint is the hip joint?
Ball and socket, synovial.
What is the main function of the hip joint?
To bear weight - its range of movements is therefore limited.
What bones articulate in the hip joint?
The femoral head articulates with the acetabulum of the pelvis.
What is the intrascapular ligament of the hip joint?
The ligament of the head of the femur.
Name the 3 extrascapular ligaments of the hip joint.
- Iliofemoral. - Ischiofemoral. - Pubofemoral.
Which extrascapular ligament of the hip joint is located most posteriorly?
Ischiofemoral.
Give 2 features of the acetabulum which add stability to the hip joint.
- It is deep and encompasses nearly all of the head of the femur. 2. It is surrounded by the acetabular labrum which increases its depth and provides a larger articular surface.
What is the name of the fibrocartilage collar that surrounds the acetabulum?
The acetabular labrum.
Give 2 functions of the acetabular labrum.
- Increases the depth of the acetabulum. 2. Provides a larger articulating surface.
The circumflex femoral arteries supply the hip joint. What are they a branch of?
The profunda femoris artery.
What nerves innervate the hip joint?
Sciatic, obturator and femoral. (Any nerve supplying a muscles which moves a joint also innervates the joint).
What muscles support the pelvis when standing on one leg?
Gluteus medius and minimus.
In posterior dislocations of the hip which nerve is liable to injury?
Sciatic.
What accompanies the ligament of the head of the femur in children?
Blood vessels supplying the femoral head epiphyses.
What is the usual cause of avascular necrosis of the head of the femur in adults?
Fractured neck of the femur.
