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Wheeless' Textbook of Orthopaedics
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Hyperpronation of Rheumatoid Foot



- Discussion:
    - hyperpronation, by virtue of its mechanics, inevitably results in
          hallux being forced into valgus even in absence of RA dz
          in first metatarsal joint;
    - in this situation fusion of first MP joint is preferred option;
          - this does not apply when there is severe forefoot disease;
    - where foot has collapsed into pronated valgoid position, requirements
          are multiple;
    - heel is no longer under leg, midfoot is twisted, often to extent that
          talar head starts to bear wt medially, & gait becomes flat footed
          with the loss of the anterior rocker;

- Treatment:
    - simple medial translational calcaneal osteotomy can help put load
          bearing area of heel back under loadbearing line of leg;
          - this may relieve the pain due to turning moments generated in ankle-
              subtaloid complex on wt bearing;



Original Text by Clifford R. Wheeless, III, MD.