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Definition
Knock knees are an outward angulation of the lower legs, such that when the knees are touching the ankles are separated.Causes, incidence, and risk factors
Most children develop a slight knock-kneed stance by the time they are 2 or 3 years old, often with significant separation at the ankles when the knees are touching. This is part of normal development and often persists through age 5 or 6, at which time the legs begin to straighten fully. By puberty, most children can stand with the knees and ankles touching (without forcing the position).Signs and tests
If a physical examination and review of the child's medical history indicate a specific cause for the knock knees other than normal development, your health care provider will order the appropriate studies.Treatment
Knock knees are usually not treated. Surgery may be considered for knock knees that persist beyond late childhood and in which the separation between the ankles is severe.Expectations (prognosis)
Children normally outgrow knock knees without treatment, unless there is an underlying disease. For cases requiring surgery, the procedure provides excellent cosmetic results.Complications
Calling your health care provider
Call your health care provider to schedule an evaluation if you suspect your child has knock knees.Prevention
There is no known prevention for normal knock knees. Update Date: 5/28/2003 Updated by: David M. Scher, M.D., Department of Orthopaedic Surgery, NYU-Hospital for Joint Diseases, New York, NY. Review provided by VeriMed Healthcare Network.
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Page last updated: 28 October 2004 |