Ver el código de «Legg-Calve-Perthes disease»

==Background==
*[[Avascular necrosis of hip|Avascular necrosis of femoral head]]
**Capital femoral epiphysis fails to grow because of lack of blood supply
*Affects children 4-9yr old
*Male:female 4:1
*Bilateral in 10%

==Clinical Features==
*Insidious onset of mild [[hip pain]] and [[limp]]
**May have painless limp
**May have referred pain to groin, thigh, knee
*Pain often exacerbated by activity, relieved with rest
*Decreased hip abduction and internal rotation

==Differential Diagnosis==
{{Pediatric hip DDX}}

==Evaluation==
[[File:Roe-perthes.jpg|thumb|]]
*Plain radiographs of the hip
**May be normal early in disease
**If high suspicion obtain bone scan or MRI
*Imaging findings:
**Widening of cartilage space of affected hip
**Small size ossific nucleus of femoral head 
**Subchondral stress fracture line in femoral head

==Management==
*Orthopedic surgery consultation
*Non-weight bearing
*Protection of hip joint (maintain in abduction and internal rotation)

==Disposition==
*Generally may be discharged
**Should be done in consultation with orthopedic surgery to ensure appropriate therapy and close follow-up

==See Also==
*[[Pediatric hip pain]]

==References==
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[[Category:Pediatrics]]
[[Category:Orthopedics]]