A 6-month-old female infant is brought to the orthopedic clinic by her mother. The child was born with bilateral clubfeet and was treated with Ponseti casting from age 2 weeks. Serial casts were applied weekly for 8 weeks, followed by a percutaneous Achilles tenotomy at 8 weeks of age. The feet now appear well-corrected on clinical examination. However, the mother reports poor compliance with the Denis Browne abduction brace, wearing it only 4–5 hours per day instead of the recommended 23 hours per day. What is the most likely consequence of this non-compliance?