Stage of Fragmentation: In this stage there is progressive sclerosis and flattening of the capital femoral epiphysis.
Figure: Perthes coxa-breva
Transient synovitis (Toxic synovitis)
- Residual proximal femoral deformities, including:
- Coxa breva
- Coxa magna
- Coxa plana
- Many go on to develop degenerative hip disease