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Table 1 Clinical classification of HME

From: An unusual diagnosis for an usual test

I

No deformities and no functional limitations

A ≤ 5 sites with osteochondromas

B > 5 sites with osteochondromas

II

Deformities and no functional limitations

A ≤ 5 sites with deformities

B > 5 sites with deformities

III

Deformities and functional limitations

A Functional limitation of 1 site

B Functional limitation of > 1 site