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Patients with midfoot arthrosis had a different ratio of the first to the second metatarsal length than did a similarly aged cohort without midfoot arthrosis. The patients had a relatively short first metatarsal or a relatively long second metatarsal, or both. Midfoot arthrosis may have a mechanical etiology. Recognition of risk factors is the first step in developing prevention strategies.
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Davitt et al. (2005) studied this question.
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