The Hip Joint

Question 1

Bones of the pelvic girdle

Answer 1

Left and right innominate bones

Sacrum

Question 2

Joints of the Pelvic Girdle

Answer 2

2 Sacroiliac Joints

Pubic Symphisis joints

Question 3

Anatomical position of the pelvic girdle

Answer 3

ASIS and Pubic tubercles in same Coronal Plane

Question 4

Area of fusion of Ilium, Ischium and Pubis

Answer 4

Acetabulum

Question 5

Type of joint at the acetablulum

Answer 5

Ball and Socket Synovial Joint

Question 6

Ligament completing the Acetabular labrum

Answer 6

Transverse Acetabular Ligament

Question 7

Fibrous Capsule attachments

Answer 7

Proximally: Rim of Acetabulum

Distally: Femoral Neck (Intertrochanteric line and greater trochanter)

Question 8

Ligaments of the Hip Joint?

Answer 8

Iliofemoral
Ischiofemoral
Pubofemoral

Question 9

Which is the strongest ligament

Answer 9

Iliofemoral

Question 10

Which is the weakest ligament

Answer 10

Ischiofemoral

Question 11

Which ligament covers the joint posteriorly

Answer 11

Ischiofemoral

Question 12

When are the ligaments taut?

Answer 12

When the hip is extended- they pull the femoral head into the acetabulum

Question 13

Which ligament prevents excessive abduction

Answer 13

Pubofemoral

Question 14

Which ligament presents hyperextension

Answer 14

Iliofemoral

Question 15

Which ligament covers the joint Anteriorly and Inferiorly

Answer 15

Pubofemoral

Question 16

Which ligament covers the joint Anteriorly and Superiorly

Answer 16

Iliofemoral

Question 17

Movements of the Hip

Answer 17

Flexion/Extension
Abduction/Adduction
Medial/Lateral Rotation

Question 18

Features of a Pubic Rami #

Answer 18

Indicates fall if unilateral

Significant TRM if bilateral

Question 19

Features of Open Book Pelvic #

Answer 19

Opening of Pubic Symphysis

Significant Anterior Trauma

Question 20

Features of #NOF

Answer 20

Often due to Osteoporosis
20% cases have AVASCULAR NECROSIS (secondary to vessel rupture/stretching)

May require a hip replacement

Question 21

Features of DDH (Developmental Dysplasia of Hip)

Answer 21

Common In Females

Due to low Amniotic Fluid levels/baby born in breech

Laxity of ligaments causes dislocation

Question 22

Features of Anterior Hip Dislocation

Answer 22

Force applied to Abducted/ Laterally rotate hip

Head levered out Anteriorly

Femoral Neurovasculature at risk of damage

Question 23

Features of Posterior Hip Dislocation

Answer 23

Trauma to Adducted/Medially Rotated/Flexed hip

e.g. car crash

Sciatic Nerve at risk of damage

Question 24

Features of Medial Dislocation (Acetabular #)

Answer 24

Femoral Head is forced through acetabulum on lateral impact

May be associated with internal damage