Cruciate anastomoses and hip joint (dave's notes) Flashcards
Where are the cruciate anastomoses of the hip joint?
At the level of the lesser trochanter
What are the contributors to the cruciate anastomoses?
Transverse branch of the medial circumflex
Transverse branch of lateral circumflex
Ascending branch of first perforating
Descending branch of the inferior gluteal artery
What forms the acetabulum? When?
Formed from the ilium, ischium, and pubis with the epiphysis closing after puberty
What occupies the central non-articular part of the acetabulum?
A fat pad (haversian pad)
Describe the non-articulating part of the head of the femur. What attaches here?
Excavated into a pit (fovea) for attachment of the ligamentum teres.
Where is the hip joint capsule attached?
Circumferentially around the labrum and transverse ligament
What reflects back from the attachment of the hip joint capsule?
From the attachment, fibres are reflected back blending with the periosteum and constituting the reticula fibres. These bind down the nutrient arteries to supply the head.
What does an intracapsular fracture result in?
Avascular necrosis of the femoral head
What 3 ligaments spiral around the femoral neck?
Iliofemoral
Pubofemoral
Ischiofemoral
Describe the iliofemoral ligament
The strongest of the three ligaments around the femoral neck, V shaped, from AIIS/acetabular rim to intertrochanteric line
Describe the attachments of the pubofemoral ligament
From iliopubic eminence/obturator crest
What are the attachments of the ischiofemoral ligament?
From acetabulum to the capsule
Where does the synovial membrane attach?
To the articular margins
What is the blood supply to the hip joint?
Via the T-anastomoses
What is the nerve supply to the hip joint?
Via the femoral nerve (nerve to rectus femoris), sciatic nerve (nerve to QF??), and the obturator nerve
