Hip & Pelvis Anomalies

Question 1

What’s the ratio of live births that have fixed dislocation of the hip? Developmental Dysplasia of the Hip (DDH), aka congenital hip dislocation

Answer 1

1:1000

Question 2

What gender is more likely to have DDH?

Answer 2

Females

Question 3

What % of DDH sufferers are bilateral?

Answer 3

25%

Question 4

Before a child is 4 months old, what imaging modality must be used to detect DDH?

Answer 4

Diagnostic Ultrasound

Question 5

The acetabular roof inclination must be above __ degrees in DDH

Answer 5

30

Question 6

The vertical line drawn on DDH evaluations is called?

Answer 6

Perkin’s line

Question 7

The horizontal line drawn on DDH x-ray evaluations is called?

Answer 7

Hilgenreiner’s line

Question 8

The femoral angle measures LESS than 120 degrees

Answer 8

Coxa Vara

Question 9

What is coxa valga?

Answer 9

Femoral angle measures OVER 130 degrees

Question 10

A “pit” usually found in the anterosuperior femoral neck is known as:

Answer 10

Synovial Herniation Pit (aka Pitt’s pit)

Question 11

An indentation/U-shape in the ilium, lateral to the sacrum, and in the superior portion of the pelvic ring is known as:

Answer 11

Paraglenoid sulcus

Question 12

Calcification of vasculature in the lower pelvic ring (basically look like little circles) are known as:

Answer 12

Phleboliths

Question 13

A particle of bone above the head of the femur, extending from the acetabulum is known as:

Answer 13

Os acetabulum