Other than Legg-Calvé-Perthes disease, what conditions can cause unilateral avascular necrosis of the hip ?

Other than Legg-Calvé-Perthes disease, what conditions can cause unilateral avascular necrosis of the hip ?

1. Multiple epiphyseal dysplasia
2. Spondyloepiphyseal dysplasia
3. Gaucher’s disease