legg-calvé-perthes disease by john a. herring, hui taek kim, and richard browne j bone joint surg...

Legg-Calvé-Perthes Disease

by John A. Herring, Hui Taek Kim, and Richard Browne

J Bone Joint Surg AmVolume 86(10):2103-2120

October 1, 2004

©2004 by The Journal of Bone and Joint Surgery, Inc.

An example of a hip in group A of the lateral pillar classification in a patient who was 9.7 years old at presentation.

John A. Herring et al. J Bone Joint Surg Am 2004;86:2103-2120


An example of a hip in the B/C border group of the lateral pillar classification in a patient who was 7.1 years old at presentation.



An example of a hip in group C of the lateral pillar classification in a patient who was 8.3 years old at presentation.



An example of a hip in group B of the lateral pillar classification in a patient who was 7.4 years old at presentation.



An example of a class-I hip according to the Stulberg classification in a patient who was 9.8 years old at presentation, when the hip was categorized as group B according to the lateral pillar

classification.



Frog-leg lateral radiograph, made at the age of seventeen years, showing no differences between the two hips.



An example of a class-II hip according to the Stulberg classification in a patient who was 8.8 years old at presentation, when the hip was categorized as group B according to the lateral pillar

classification.



Frog-leg lateral radiograph, made at the age of 17.0 years, showing a round femoral head on the right, which is slightly larger than the left femoral head.



A method for distinguishing between Stulberg class-II and III hips.



A perpendicular is erected at the center of the line.



A best-fit circle is drawn to match the surface of the femoral head.



With use of the same radius, a best-fit circle is drawn over the surface of the femoral head on the frog-leg lateral radiograph.



In this example, the circle fails to fall within 2 mm of the surface of the femoral head on the frog-leg lateral radiograph.



An example of a class-III hip according to the Stulberg classification.



Frog-leg lateral radiograph, made at the age of sixteen years and seven months, showing an ovoid femoral head.



An example of a class-IV hip according to the Stulberg classification.



Frog-leg lateral radiograph, made at the age of fifteen years and three months, showing more severe flattening of the femoral head.



Another class-IV hip according to the Stulberg classification.



Frog-leg lateral radiograph, made at the age of seventeen years and four months, showing severe flattening of both femoral heads.



A class-V hip according to the Stulberg classification.



Frog-leg lateral radiograph, made at the age of thirteen years and three months, showing marked subluxation and incongruity between the femoral head and the acetabulum.



legg-calvé-perthes disease by john a. herring, hui taek kim, and richard browne j bone joint surg...

Documents

journal of bone

joint surgery

lateral pillar classification

years old

stulberg classification

group b

bc border group

group c