Hip Joint Flashcards
Joint classification, how the joint achieve stability, movements and muscles, innervation and blood supply, what can go wrong and how to tell on examination.
Classify the hip joint structurally and functionally.
Synovial, ball and socket.
What are the articulating surfaces of the hip joint?
Pelvic acetabulum and head of femur.
How does the hip joint achieve stability?
Acetabuluar labrum, intracapsular ligamnets, extracapsular ligaments, muscles.
What is the role of the acetabular labrum?
Deepens the acetabulum so the hemispherical head of femur fits completely.
Where is the intracapsular ligament?
From acetabular fossa to fovea of the femur.
What is enclosed within the intracapsular ligament?
Artery to the head of the femur, minor arterial supply to the joint.
What are the extracapsular ligaments?
Iliofemoral, pubofemoral, ischiofemoral.
Where does the iliofemoral ligament run?
From anterior inferior iliac spine to intertrochanteric line of femur.
What is the role of the iliofemoral ligament?
Prevents hyperextension of the hip.
Where does the pubofemoral ligament run?
From superior pubic rami to intertrochanteric line of the femur.
What is the role of the pubofemoral ligament?
Anterior and inferior support to prevent excessive abduction and extension.
Where does the ischiofemoral ligament run?
From the body of the ischium to the greater trochanter of the femur.
What is the role of the ischiofemoral ligament?
Supports posteriorly, prevents hyperextension and holds femoral head in place.
What are the movements of the hip?
Flexion, extension, abduction, adduction, internal rotation, external rotation.
Which muscles power flexion of the hip?
Iliopsoas, rectus femoris, sartorius, pectineus.
