perthes

Issues

Femur

Multiplanar deformity

- worsend by previous surgery

- may require osteotomy

Acetabulum

Dysplasia often present

- not as severe as in DDH

LLD

Can be significant

Abductors

Have been short for long time

- difficult to restore length

Definition

Idiopathic condition of the immature femoral capital epiphysis involving varying degrees of osteonecrosis

AKA

- Legg-Calve-Perthes disease

- coxa plana

Described in separate publications in 1912 by

- Legg (Boston)

- Calve (France)

- Perthes (Germany)

Epidemiology

M: F    4:1

1 in 740 males