Joints of the hip conplex Flashcards
Name the ligaments indicated by the arrows.
Pubofemoral ligament
Ischiofemoral ligament
the acetabulum is made up of the convergence of which 3 bones?
What type of joint is the acetabulum?
iliac, ischeum and pubic bone
Ball and socket joint
which parts of the acetabulum are articular? non-articular?
articular: lunate surface (weight bearing.)
Non-articular:
- acetabular notch (rough, trabecular surface)
- fossa are non-articulating (fat pad)
What is the arrow pointing to here?
What function does this structure serve?
Psoas Bursa.
the psoas bursa protects the anterior head of the femur (which lies outside the acetabulum). Also protects the tendons of the psoas major muscle as they pass over the acetabulum.
which trabecular networks are involved in the head of the femur? Whats their respective function?
Superiorly:
(due to compression through head and neck)
- Vertical: weight bearing fibres that are important for maintaining stance
- Arcuate: resist bending forces on the neck of the femur
(tend to degenerate with ageing, esp osteoporotic individual)
Inferiorly:
- Medial fibres
- Lateral fibres
Both are involved in responding to forces applied to greater and lesser trochanter
The neck-shaft angle enables femur to swing free of pelvis in locomotion. A normal angle is […..].
A larger angle is termed […], smaller angle is [….]. (pathological)
120 degrees
>120deg is coxa valga
<120 is coxa vara
NB: angle is typically 155deg in newborn.
Adult females have smaller angle than males.
The [….] of the acetabulum bridges the acetabular notch, deepens the socket, and increases the area of the articular surface.
Labrum
NB: often torn in hip injury (dislocation)
what are the 3 ligamenous supports attaching the capsule to the base of neck of the femur? describe their relative positions.
iliofemoral ligament
- located anteriorly
- attached
