Waldenström classification of Perthes disease
Updates to Article Attributes
Body
was changed:
The Waldenström classification of Perthes disease refers to x-ray abnormalities, and represents four temporal phases of the disease. These stages have been further subdivided in the modified Elizabethtown classification 2.
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stage I: early
- asymmetric femoral epiphyseal size (smaller on the affected side)
- apparent increased density of the femoral head epiphysis
- widening of the medial joint space
- blurring of the physeal plate
- radiolucency of the proximal metaphysis
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stage II: fragmentation
- subchondral lucency (crescent sign)
- femoral epiphysis fragments
- femoral head outline is difficult to make out
- mottled density
- thickened trabeculae
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stage III: reparative
- re-ossification begins
- shape of the femoral head becomes better defined
- bone density begins to return
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stage IV: healed
- depending on the severity, the femoral head may be nearly normal or may demonstrate:
- flattening of the articular surface, especially superiorly
- widening of the head and neck of the femur
- depending on the severity, the femoral head may be nearly normal or may demonstrate:
History
The staging system originally described by J H Waldenström in 1922 had some differences (I: evolutionary period, II: healing period, III: growing period, IV: definite stage) 4. What is today widely known as Waldenström classification is probably better reflecting the classification used by S T Canale in 1972 5 and is therefore called Elisabethtown classification by some 2.
See also
-</ul><h4>See also</h4><ul>- +</ul><h4>History</h4><p>The staging system originally described by <strong>J H Waldenström</strong> in 1922 had some differences (I: evolutionary period, II: healing period, III: growing period, IV: definite stage) <sup>4</sup>. What is today widely known as Waldenström classification is probably better reflecting the classification used by S T Canale in 1972 <sup>5</sup> and is therefore called <strong>Elisabethtown classification</strong> by some <sup>2</sup>.</p><h4>See also</h4><ul>
References changed:
- 4. Waldenström H. The Definite Form of the Coxa Plana. (2016) Acta radiologica (Stockholm, Sweden : 1987). 57 (7): e79-94. <a href="https://doi.org/10.1177/0284185116642923">doi:10.1177/0284185116642923</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/27298484">Pubmed</a> <span class="ref_v4"></span>
- 5. Canale ST, D'Anca AF, Cotler JM, Snedden HE. Innominate osteotomy in Legg-Calvé-Perthes disease. (1972) The Journal of bone and joint surgery. American volume. 54 (1): 25-40. <a href="https://www.ncbi.nlm.nih.gov/pubmed/4559945">Pubmed</a> <span class="ref_v4"></span>
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