Abstract
Subtalar joint arthroereisis is a surgical modality that has been shown to be an effective procedure for flexible flatfoot in both pediatric and adult populations. Despite advances in understanding its mechanics and function, complication and implant removal rates remain as high as 30% to 40%. Analysis was performed to determine the survivability of 2 subtalar joint arthroereisis implants, absorbable and nonabsorbable, used alone and in combination with other procedures in both the adult and pediatric populations. The 95 total arthroereisis procedures were analyzed in several major categories: absorbable implants versus nonabsorbable implants and adult versus pediatric patients. Each major group was then further subdivided to create further subgroups: absorbable isolated procedures, absorbable combined procedures, nonabsorbable isolated procedures, and nonabsorbable combined procedures. The overall survival rates were 83% for absorbable implants and 81% for nonabsorbable implants. A total of 11 (17%) absorbable implants and 6 (19%) nonabsorbable implants were removed, respectively, at an average of 9 months and 23 months postoperatively. When used alone and in combination with other procedures, 36% and 13% of absorbable implants and 18% and 19% of nonabsorbable implants, respectively, were removed. When comparing adult versus pediatric populations, the overall survival rates of the absorbable and nonabsorbable implants were 81% for absorbable implants and 79% for nonabsorbable implants in the adult population and 85% for absorbable implants and 100% for nonabsorbable implants in the pediatric population.
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