Radiographic and clinical classification of acquired midtarsus deformities

Lew C. Schon, Steven B. Weinfeld, Greg A. Horton, Sylvia Resch

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96 Scopus citations


To develop a classification of midtarsus deformities, clinical examination and weightbearing radiographs were used to evaluate 131 feet in 109 patients (average age, 59 ± 11 years) with those deformities, Patients were classified into four types based on anatomic location of the maximum deformity. Type I (N - 43) shower deformity at the metatarsocuneiform joints medially and the forth and fifth metatarsocuboid laterally, with plantarmedial and/or medial prominence. Type II (N = 60) had deformity at the navicuilocuneiform joint laterally; and the fourth and fifth metatarsocuboid joints laterally; plantarlateral prominence was characteristic, although one- third had isolated or additional medial prominences. Type III (N = 17) had major deformity in the perinavicular region, with a prominence plantarcentrally or plantarlaterally. Type IV (N = 11) had deformity at the transverse tarsal joints with variable prominences. Each type was further subdivided into stages A, B, and C based on the severity of the deformity. In stage B, the midtarsus was coplanar with the metatarsocalcaneal plane. In stage A, the midtarsus was above this plane. In stage C, the midtarsus was below this plane. We concluded that midtarsus deformities can be classified as one of four types and one of three stages. Additional study is warranted to correlate this system with prognosis and treatment for this pathologic process.

Original languageEnglish
Pages (from-to)394-404
Number of pages11
JournalFoot and Ankle International
Issue number6
StatePublished - Jun 1998
Externally publishedYes


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