Salter-Thompson classification

 

Salter-Thompson classification for Legg-Calve-Perthes disease simplifies the Catterall classification into 2 groups. Based on the radiographic crescent sign, we can distinguish:

  • group a: including Catteral groups I and II, where the crescent sign involves less than 50% of the femoral head.
  • group b: including Catterall groups III and IV, where the crescent sign involves more than 50% of the femoral head.

 

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rID: 44065
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    Figure 1: Salter-Thompson classification
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