ABSTRACT
Flexible flatfoot is among the most common skeletal disorders in childhood. This study
describes the dynamic and static correction effects of subtalar arthroereisis in adolescents
with flexible symptomatic flatfeet in comparison to normal subjects as well as to
results before and after removal of metal. Eighteen adolescents with 25 symptomatic
flexible flatfeet were treated surgically with a subtalar arthroereisis at a mean
of 12.5 (10-16) years. At follow-up (mean 3.9 years, range 0.4-8), patients filled
out the American Orthopaedic Foot and Ankle Society questionnaire, received radiographs
and were examined using dynamic and static pedobarography as well as static hindfoot
axis examination. Results were compared to healthy controls (n = 13; 26 feet). Surgically treated feet (n = 25) had better questionnaire results after surgery than before, but lower scores
than healthy feet. Radiological parameters improved significantly after surgery. Removal
of metal did not influence post-surgical results (follow-up 2.8 years). Surgically
treated feet had larger contact areas than normal feet with predominance to the midfoot
region. The relative maximum force, relative peak pressure and contact time were higher
in the midfoot of treated feet compared to controls. When comparing pedobarography
data of treated versus untreated feet of the same patients (subgroup n = 11 feet), there were no differences. Subtalar arthroereisis was able to effectively
treat symptomatic flexible flatfeet in this population. Results improved significantly
evaluating a questionnaire, radiographs, dynamic and static weight distribution, but
were still worse than results of healthy feet. There was no relapse after removal
of metal.
Level of Clinical Evidence
Keywords
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Article info
Publication history
Published online: July 28, 2021
Footnotes
Financial Disclosure: No funding was obtained for this study.
Conflict of Interest: All authors declare to have no conflict of interest.
Identification
Copyright
© 2021 by the American College of Foot and Ankle Surgeons. All rights reserved.
