Validation of Wagner's classification: a literature review.

To ensure high quality care, practitioners should base their practice on sound clinical evidence. Relying on quantitative measurements when evaluating this evidence demands measurement accuracy, reliability, and validity. Current diabetic foot ulcer classification systems include: Meggitt's, Wagner's, Knighton's, Pecoraro's, University of Texas San Antonio Diabetic Wound Classification, and Size (Area and Depth), Sepsis, Arteriopathy, and Denervation. Of these, the Wagner's classification system is the most widely used to describe the natural history of the dysvascular foot, even though evidence of its validity and reliability are lacking. A review of clinimetric properties and existing validation literature of the other diabetic classification systems suggest that the University of Texas San Antonio Diabetic Wound Classification and S(AD) SAD have the potential to fill the current void, once additional studies have been conducted.