ligaments of the acetabulum and hip joint Flashcards
How is the femur bound to the ilium ischium and pubis?
by ligaments
What are the ligaments that attach the femur to the ilium ischium and pubis?
iliofemoral ligament
ischiafemoral ligament
pubicfemoral ligament
Where does the iliofemoral ligament attach to the femur?
anterior surface of the femur along the introtrochanteric line.
Where does the ichiofemoral ligament attach to the femur?
attaches to the superior aspect of the femoral neck, continuing onto the upper part of the intertrochanteric line
Where does the pubofemoral attach to the femur?
attaches to the inferior aspect of the femoral neck
What are the position of the ligaments in anatomical position (standing)?
they spiral and pull the head of the femur into the acetabulum
What is the position of the head of the femur while standing ?
part of the articular cartilage on the head of the femur is exposed—specifically, on the anterior and superior aspect of the articular “ball”.
because of the torsion angle of the femur
What is true anatomical position of the femur?
abducting and flexing the femur in standing position
this is position of development
Why are the ligaments taut in standing position?
because the femur head is no longer in anatomical position, and the anterior superior aspect of the femur is exposed so the head is pulled more into the fat pad
Why are the ligaments laxed while the femur is flexed??
because flexion and abduction is true anatomical position
this brings the femur head in maximum contact with the acetabulum. this is position of development and standing and walking are modifications of true anatomical position
What type of dislocations is the hip prone to in flexed seated position?
posterior dislocations
because ligaments are laxed position
happens in car accidents and falling on knees
What are the weak spots in the ligaments?
Anteriorly between iliofemoral and pubofemoral ligament POSTERIORLY between the iliofemoral and ischiofemoral ligaments
dislocations happen here the most
What are the parts of the hip joint from deep to superficial?
the acetabular labrum is inside the synovial membrane,
which is inside the fibrous capsule of the joint, of which the zona orbicularis is one part,
which is inside the tube of ligaments (iliofemoral, ischiofemoral, and pubofemoral) that bind the femur to the hip,
which is itself surrounded by the muscles of the hip,
which are covered by the fascia lata,
which is covered by subcutaneous fat and skin
