perthes

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

Aetiology & Classification

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