Perthes Association
- Information and support for parents of children with Perthes disease and related conditions, including all forms of osteochondritis and M.E.D. (Multiple Epiphyseal Dysplasia).
- http://www.perthes.org.uk

The Children's Hospital at Westmead - Perthes' disease
- Fact sheet for parents describing the disease, causes, diagnosis and treatment.
- http://www.chw.edu.au/parents/factsheets/perthesj.htm

Arthritis in Children
- Provides information for parents about the disease, available management options and associated problems. By the University of Washington Orthopaedics.
- http://www.orthop.washington.edu/bonejoint/jzzzzzzz1_1.html

Pediatric Rheumatology Home Page
- A resource for families and health professionals caring for children with arthritis, lupus, scleroderma, kawasaki disease, SLE, and other rheumatic diseases.
- http://www.goldscout.com/