The Hip Joint Flashcards
Bones of the pelvic girdle
Left and right innominate bones
Sacrum
Joints of the Pelvic Girdle
2 Sacroiliac Joints
Pubic Symphisis joints
Anatomical position of the pelvic girdle
ASIS and Pubic tubercles in same Coronal Plane
Area of fusion of Ilium, Ischium and Pubis
Acetabulum
Type of joint at the acetablulum
Ball and Socket Synovial Joint
Ligament completing the Acetabular labrum
Transverse Acetabular Ligament
Fibrous Capsule attachments
Proximally: Rim of Acetabulum
Distally: Femoral Neck (Intertrochanteric line and greater trochanter)
Ligaments of the Hip Joint?
Iliofemoral
Ischiofemoral
Pubofemoral
Which is the strongest ligament
Iliofemoral
Which is the weakest ligament
Ischiofemoral
Which ligament covers the joint posteriorly
Ischiofemoral
When are the ligaments taut?
When the hip is extended- they pull the femoral head into the acetabulum
Which ligament prevents excessive abduction
Pubofemoral
Which ligament presents hyperextension
Iliofemoral
Which ligament covers the joint Anteriorly and Inferiorly
Pubofemoral
Which ligament covers the joint Anteriorly and Superiorly
Iliofemoral
Movements of the Hip
Flexion/Extension
Abduction/Adduction
Medial/Lateral Rotation
Features of a Pubic Rami #
Indicates fall if unilateral
Significant TRM if bilateral
Features of Open Book Pelvic #
Opening of Pubic Symphysis
Significant Anterior Trauma
Features of #NOF
Often due to Osteoporosis
20% cases have AVASCULAR NECROSIS (secondary to vessel rupture/stretching)
May require a hip replacement
Features of DDH (Developmental Dysplasia of Hip)
Common In Females
Due to low Amniotic Fluid levels/baby born in breech
Laxity of ligaments causes dislocation
Features of Anterior Hip Dislocation
Force applied to Abducted/ Laterally rotate hip
Head levered out Anteriorly
Femoral Neurovasculature at risk of damage
Features of Posterior Hip Dislocation
Trauma to Adducted/Medially Rotated/Flexed hip
e.g. car crash
Sciatic Nerve at risk of damage
Features of Medial Dislocation (Acetabular #)
Femoral Head is forced through acetabulum on lateral impact
May be associated with internal damage
