Legg-Calve-Perthes disease

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[edit] Discussion

  • Idiopathic avascular necrosis of the femoral head.
  • Bilateral in 10-20% of patients and usually affects children aged 4-8 years.
  • When both hips are involved, they are usually affected successively, not simultaneously.
  • Rarely occurs in blacks
  • In adults, the corresponding condition is termed Chandler disease.

[edit] Imaging Findings

[edit] Plain films

  • Early signs
    • Small femoral epiphysis (96%)
    • Sclerosis of the femoral head with sequestration and collapse (82%)
  • Late signs
    • Radiolucent crescent line representing a subchondral fracture
    • Femoral head fragmentation and femoral neck cysts from intramedullary hemorrhage or extension of physeal cartilage into metaphysis, loose bodies, and coxa plana.
    • Coxa magna or remodeling of the femoral head, which becomes wider and flatter and similar in appearance to a mushroom.

[edit] Images

Patient #1

[edit] See Also

[edit] External Links

[edit] References