Final Exam Flashcards
What joint forms the connection between the lower extremity and pelvis?
Hip joint
Only the ________ joint is more moveable than the the hip joint?
Shoulder
The hip joint is subject to what diseases?
Inflammatory and degenerative diseases
T or F: The hip joint what one of the first joints for which a replacement prosthetic was designed?
True
T or F: The hip joint is commonly dislocated
False
What are the articulating surfaces of the hip joint?
Head of the femur + acetabulum of the pelvis
The cavity of the acetabulum is deepened by what?
The presence of the acetabular labrum
How much does the acetabular labrum increase the depth of the articulation of the hip joint?
10%
What is the transverse acetabular ligament?
Part of the acetabular labrum which bridges the notch
The hip joint is classified as what type of joint?
Ball and socket
T or F: The capsular ligament is strong and fairly loose allowing free movement?
True
T or F: The iliofemoral ligament is very weak
False, it’s the strongest ligament in the body
What is the strongest ligament of the body?
Illiofemoral
What are the attachments of the illiofemoral ligament?
Anterior inferior iliac spine (superiorly) and the intertrochanteric line (inferior)
What ligament “screws” the head of the femur into the acetabulum?
Illiofemoral ligament
Is the Illiofemoral ligament intrinsic or extrinsic?
Extrinsic
Does the Illiofemoral ligament act as a rope or as a wall?
Rope
What is the nerve supply of the hip joint?
Femoral, obturator, and sciatic
When bending backwards, what muscles are brought into action to prevent the body from falling backward?
Anterior hip and abdominal muscles
When bending forward, which muscles are brought into play and prevent the body from falling forward?
Gluteal, hamstring, and spinal muscles
T or F: the pubofemoral reinforces the capsule ligament posteriorly and superiorly?
False, it reinforces the capsule anteriorly and inferiorly
What are the attachments of pubofemoral ligament?
Superior ramus of pubis (superiorly) to the intertrochanteric line (inferiorly)
What ligament of the hip prevents abduction at the joint?
Pubofemoral
Is the pubofemoral ligament intrinsic or extrinsic?
Extrinsic
Does the pubofemoral ligament act as a rope or like a wall?
Rope
Where does the ischiofemoral ligament reinforce the capsular ligament?
Posteriorly
What are the attachments of the ischiofemoral ligament?
Body of the ischium (superiorly) + the neck and greater trochanter of the femur (inferiorly)
Which hip ligament prevents hyperextension and abduction?
Ischiofemoral
Does the ischiofemoral ligament act as a rope or like a wall?
Rope
Is the ischiofemoral ligament extrinsic or intrinsic?
Extrinsic
What is the ligament also known as the ligament of the head of the femur?
Capitis Femoral Ligament
What hip ligament is a weak intrinsic ligament?
Capitis femoris ligament
What is the main function of the Capitis femoris ligament?
Conduct blood vessels to the head of the femur
Why does the hip joint have less movement than the shoulder joint?
Some movements have been sacrificed in order to provide strength and stability.
What is a term used to describe an ongoing process which is variable in its manifestations and not always detectable at birth?
Developmental dysplasia
Developmental displasia is also called what?
Congenital disclocation
How often is developmental dysplasia found?
1.5 per 1,000 live birthda
How often is developmental dysplasia bilateral?
50% of cases. 8x more common in females
Ligamentous laxity is associated with what?
Developmental dysplasia