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Piernas arqueadas - Overview

Nombres alternativos

Rodilla vara; Piernas en O

Definición:

Corresponden a una afección en la que las rodillas permanecen ampliamente separadas cuando una persona se para con los pies y tobillos juntos. En los niños menores de 18 meses, se considera normal.

Causas, incidencia y factores de riesgo:

Los niños nacen con las piernas arqueadas debido a su posición plegada en el útero, pero éstas comienzan a enderezarse una vez que el niño empieza a caminar y sus extremidades empiezan a soportar peso (aproximadamente entre los 12 y 18 meses de edad).

Hacia los tres años, el niño generalmente puede pararse con los tobillos separados y las rodillas apenas en contacto. Si persisten las piernas arqueadas, entonces se dice que el niño es patizambo.

Las piernas arqueadas pueden ser causadas por enfermedades tales como:

  • Enfermedad de Blount
  • Displasias óseas (desarrollo anormal)
  • Fracturas que no sanan correctamente
  • Intoxicación por plomo o fluoruro
  • Raquitismo, el cual es ocasionado por una deficiencia de vitamina D
  • Reviewed last on: 11/12/2010
  • Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

Referencias

Canale ST. Osteochondrosis or epiphysitis and other miscellaneous affections. In: Canale ST, Beatty JH, eds. Campbell's Operative Orthopaedics. 11th ed. Philadelphia, Pa: Mosby Elsevier; 2007:chap 29.

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