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Journal of Bone and Joint Surgery - British Volume, Vol 86-B, Issue 6, 887-891.
doi: 10.1302/0301-620X.86B6.14622  
Copyright © 2004 by British Editorial Society of Bone and Joint Surgery
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A new scoring system for Perthes’ disease based on combined lateral and posterior pillar classifications

Y. Sugimoto, MD, Orthopaedic Surgeon1; H. Akazawa, MD, PhD, Orthopaedic Surgeon1; Y. Miyake, MD, PhD, Orthopaedic Surgeon2; S. Mitani, MD, PhD, Orthopaedic Surgeon1; K. Asaumi, MD, PhD, Orthopaedic Surgeon1; K. Aoki, MD, PhD, Orthopaedic Surgeon1; and H. Inoue, MD, PhD, Professor1

1 Science of Functional Recovery and Reconstruction, Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine and Dentistry, 2-5-1 Shikata-cho, Okayama 700-8558, Japan.
2 Ehime Disabled Children’s Hospital, 7-2 Honmachi, Matsuyama, Ehime 790-0811, Japan.

Correspondence should be sent to Dr H. Akazawa.

We have devised a combined pillar score (CPS) system, based on the lateral pillar (LP) and the posterior pillar (PP) classifications, together with the age at onset of Perthes’ disease, and examined its correlation with prognosis. The correlation coefficient of the Catterall classification, LP, PP, and CPS systems with the Stulberg system was 0.39, 0.52, 0.50, and 0.70, respectively. Overall 21 of the 22 hips (95.4%) with a CPS of 0 to 1 point had a good outcome and 12 of the 13 hips (92.3%) with a CPS of 3 points or more had a fair or poor outcome. None with a CPS of 2 points, had a poor outcome. The study shows that an accurate prediction of the prognosis is not possible with the LP classification alone for patients classified as belonging to group B (LP height 50% to 100% of contralateral height). The CPS system does allow accurate prediction of outcome.






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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General