Developmental Coxa Vara

Question 1

Cause of coxa vara?

Answer 1

ossification defect in the inferior femoral neck

- a proximal femoral cartgilaginous physis defect

Question 2

associated conditions

Answer 2

• femoral neck stress fracture

- early hip OA

Question 3

radiographic definition?

Answer 3

NSA < 125 deg

Hilgenreiner’s epiphyseal angle >25 deg

Question 4

indications for observation?

Answer 4

Hilgenreiner’s angle < 45 deg

- only 20% will spontaneously correct

Question 5

Indications for corrective Valgus-DRO?

Answer 5

Physeal angle >60
45-60 deg with limp and progression
NSA < 110