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Wilson's sign (osteochondritis dissecans of the medial femoral condyle)

For: Osteochondritis dissecans (medial femoral condyle)

A patch of bone just beneath the joint cartilage weakens and may loosen or separate, with its cartilage, from the inner knuckle (condyle) at the lower end of the thigh bone. Seen mainly in older children, teenagers and young adults.

Not enough published figures to judge
Sensitivity25%
Specificitynot calculable (no patients without the condition)
LR+ (positive)not calculable
LR− (negative)not calculable

What the numbers mean

  • Too few published figures to say how much a result changes the picture.

Source

Conrad JM, Stanitski CL. Osteochondritis dissecans: Wilson's sign revisited. Am J Sports Med. 2003;31(5):777–778. Journal article (DOI) · single study

Figures as they will appear in Rule It In, Rule It Out (Trokos, forthcoming). If a newer or better study changes them, this page changes with the book. Figures last updated from the book on 6 October 2026.

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