Lower limb - bones and joints Flashcards
What type of joint is the hip joint?
Ball and socket synovial
What is the only intracapsular ligament of the hip joint?
ligament of head of femur
What is enclosed in the ligament of head of femur?
Obturator artery (artery to head of femur)
What are the 3 extracapsular ligaments of the hip joint?
Ischiofemoral
Pubofemoral
Iliofemoral
What is the function of the iliofemoral ligament?
Prevents hyperextension
Y shaped
Anterior and superior
What is the function of the pubofemoral ligament?
Prevents excessive abduction and extension
Triangle shaped
Anterior and inferior
What is the function of the ischiofemoral ligament?
Prevents excessive extension
Spiral orientation
Which ligament is posterior?
Ischiofemoral
Which hip ligament is the weakest?
Ischiofemoral
Which arteries largely supply the hip joint?
Medial circumflex femoral artery
The circumflex femoral arteries are branches from which artery?
Profunda femoris
What factors help to stabilise the hip joint?
- Acetabulum - deep
- Acetabular labrum
- Strong extra capsular ligaments
- Reciprocal nature of muscles and ligaments
- posterior ligaments are weaker but medial rotators are strong
The ligaments have a spiral orientation. This means they are tighter when the joint is __________.
Extended
Extension at the hip is limited by which ligament?
iliofemoral
Which type of hip dislocation is most common, why?
Posterior as it tears through the posterior part of the joint capsule is the weakest
How would a posterior dislocated hip present?
Shortened, medially rotated
Which nerve is at risk with posterior dislocation?
Sciatic nerve
What type of joint is the knee joint?
Synovial
What are the 2 articulations of the knee joint?
Tibiofemoral
Patellofemoral