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Perthes Lateral Pillar Classification

 Perthes group A  Group A=no involvement of lateral pillar
-Treatment Age < 8y/o: NSAIDs, ROM exercises, good outcomes regardless of treatment
-Treatment Age >8y/o: NSAIDs, ROM exercises
 perthes group a xray Group A Xray =no involvement of lateral pillar
-Treatment Age < 8y/o: NSAIDs, ROM exercises, good outcomes regardless of treatment
-Treatment Age >8y/o: NSAIDs, ROM exercises
 perthes group B Group B=>50% of lateral pillar height maintained
-Treatment Age < 8y/o: NSAIDs, ROM exercises, good outcomes regardless of treatment.
-Treatment Age >8y/o: femoral and/or rotational pelvic osteotomy. Gaol: keep femoral head contained within acetabulum. May require presurgical traction,
 perthes group B xray Group B=>50% of lateral pillar height maintained
-Treatment Age < 8y/o: NSAIDs, ROM exercises, good outcomes regardless of treatment.
-Treatment Age >8y/o: femoral and/or rotational pelvic osteotomy. Gaol: keep femoral head contained within acetabulum. May require presurgical traction,
perthes Group B/C 1  Group B/C 1=lateral pillar >50% height, but 2-3mm width
-Treatment Age < 8y/o: NSAIDs, ROM exercises, good outcomes regardless of treatment.
-Treatment Age >8y/o: femoral and/or rotational pelvic osteotomy. Gaol: keep femoral head contained within acetabulum. May require presurgical traction,
 perthes Group B/C 2  Group B/C 2 = lateral pillar >50% height, but little ossification
-Treatment Age < 8y/o: NSAIDs, ROM exercises, good outcomes regardless of treatment.
-Treatment Age >8y/o: femoral and/or rotational pelvic osteotomy. Gaol: keep femoral head contained within acetabulum. May require presurgical traction,
 perthes Group B/C 3 Group B/C 3 = lateral pillar 50% height, but depressed relative to central column.
-Treatment Age < 8y/o: NSAIDs, ROM exercises, good outcomes regardless of treatment.
-Treatment Age >8y/o: femoral and/or rotational pelvic osteotomy. Gaol: keep femoral head contained within acetabulum. May require presurgical traction,
 perthes group c  Group C=<50% of lateral pillar height maintained
-Treatment Age < 8y/o: poor outcome regardless of treatment.
-Treatment Age >8y/o: poor outcome regardless of treatment.
 perthes group c xray Group C=<50% of lateral pillar height maintained
-Treatment Age < 8y/o: poor outcome regardless of treatment.
-Treatment Age >8y/o: poor outcome regardless of treatment.

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