It is not known why blood supply does not reach the head of the thigh bone.
This problem is more common in males and children who are 4 to 8 years of age. It is also more common in children who are White.
Other things that may raise the risk are:
Problems with blood clotting
Limping is a common first symptom. Other problems may be:
Hip or groin pain
Thigh or knee pain
Pain that is worse with activity
Limited motion in the hip
You will be asked about your child’s symptoms and health history. A physical exam will be done. It will focus on the hip. This may be enough to suspect LCPD. Your child may be sent to a doctor who treats bones and joints.
Images of the hip may be taken. This can be done with:
Legg-Calve-Perthes disease. EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/legg-calve-perthes-disease. Accessed September 18, 2020.
Mazloumi SM, Ebrahimzadeh MH, et al. Evolution in diagnosis and treatment of Legg-Calve-Perthes disease. Arch Bone Jt Surg. 2014 Jun;2(2):86-92.
Perthes disease. Ortho Info—American Academy of Orthopaedic Surgeons website. Available at: http://orthoinfo.aaos.org/topic.cfm?topic=A00070. Accessed September 18, 2020.
Last reviewed March 2020 by
EBSCO Medical Review Board
Kari Kassir, MD
Last Updated: 4/13/2021
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