The following are links to external websites and although the content is related to the Perthes disease, these sites and organisations are not necessarily linked to the Perthes Association in any way.
- Free Counselling – Find a counsellor near you.
- The Journal of Bone and Joint Surgery
- Perthes disease in Children – Mr J N O’Hara FRCS FRCSI MCh
- Avascular Necrosis (AVN) Charity UK
- Scheuermann’s disease – The Journal of Bone and Joint Surgery
- Contact a Family – for families with disabled children
- Perthes disease – the children’s hospital at Westmead
- Legg-Calve-Perthes disease – The National Osteonecrosis Foundation
- Perthes Disease – Patient UK
- Legg – Calve – Perthes Disease – Pediatric-Orthopedics.com
- A site based in Madrid about Perthes disease for Spanish Speaking Families
- Legg-Calvé-Perthes syndrome – Wikipedia
- Perthes Disease – American Academy of Orthopaedic Surgeons