Foot and ankle deformities are frequent in patients with post-polio residual paralysis (PPRP), and can be attributed to abnormal muscle balance, abnormal posture, gravitation forces, and continued walking over the deformed foot. Equinocavovarus is the most common foot and ankle deformity in PPRP patients. Late presenting or neglected deformities can lead to gait abnormalities, abnormal pressure areas, increased energy expenditure, and arthritis of foot joints. Management of post-poliomyelitis equinocavovarus requires an in-depth understanding of the pathoanatomy as well as the interplay of muscle dynamics.
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