Knee & Hip Joint Flashcards
The hip joint is an articulation between the femoral head and the acetabulum of the pelvis. What type of joint is it?
Ball-and-socket
***Inherently stable
Acetabulum means “Little vinegar cup” in latin, and is formed by the fusion of what?
Ilium
Ischium
Pubis
The acetabulum begins as triradiate cartilage, with the fusion process occurring during what ages?
15-25 yo
This is the ligament that bridges the acetabular notch.
Transverse Acetabular Ligament
The femoral head forms 2/3 of a sphere with over ______ percent of it within the acetabulum.
50
What is the femoral head mostly covered with?
Articular cartilage (except fovea)
This is a dense, vertically oriented bone in the posteromedial aspect of the proximal femur (inside of the femur).
Calcar Femorale
This ligament is “Y-shaped” and extends from the AIIS to the Intertrochanteric Line. Sometimes considered the “strongest ligament in the body”.
Iliofemoral Ligament
The Iliofemoral Ligament prevents what?
Hyperextension
This ligament extends from the Obturator Crest to the Intertrochanteric Line. It blends laterally with the Iliofemoral Ligament.
Pubofemoral Ligament
What is the purpose of the Pubofemoral Ligament?
Primarily prevents hyperabduction
Prevents hyperextension
This ligament extends from the Ischial component of the Acetabular Rim to the Femoral Neck. It does NOT reach the Intertrochanteric Crest.
Ischiofemoral Ligament
T/F. The posterior capsule of the hip does not extend as far lateral as the anterior capsule.
True
This is the weakest of all the hip ligaments, but is balanced by robust external rotators. This is why posterior hip dislocations are most likely!
Ischiofemoral Ligament
This ligament stretches from the Acetabular Notch/Transverse Acetabular Ligament to the Fovea of the Femur.
Ligament of Head of Femur
In the Ligament of Head of Femur, there is a synovial fold conducting an artery to the head of the the Femur. Where does this artery come from?
Obturator A.
T/F. The Ligament of Head of Femur provides a large amount of stability to the Femoral Head.
False. It provides minimal stability.
This is the fibrocartilaginous rim that goes to the margin of the Acetabulum. It increases the Acetabular articular area by 10 percent.
Acetabular Labrum
This ligament is a continuation of the Labrum inferiorly and courses over the Acetabular Notch.
Transverse Acetabular Ligament
The Labrum and Transverse Acetabular Ligament contribute to ________ for the hip joint.
Stability
What arteries supply the Femoral Head and Neck?
Medial Circumflex Femoral A.
– Retinacular As.
Lateral Circumflex Femoral A.
- Ascending Branch
- Transverse Branch
Obturator A.
– Acetabular Branch (**this one goes through ligament)
The Acetabular Branch of the Obturator A. contributes to the Femoral Head at birth but diminishes by what age?
4 yo
The (LATERAL/MEDIAL) Circumflex Femoral A. courses underneath the Iliofemoral Ligament and capsule posteriorly.
Medial
The (LATERAL/MEDIAL) Circumflex Femoral A. pierces the Iliofemoral Ligament.
Lateral