We report the case of an eleven-year-old girl with untreated bilateral clubfoot. She had a total of nine long leg castings changed weekly, Achilles tendon Z-lengthening and posterior ankle release followed by another six weeks of long leg cast immobilization post-operatively. We encouraged using night-time foot abduction brace for twelve months. Independent walking was achieved six months post-treatment. No recurrence was noted at eighteen months following treatment. The modified Ponseti weekly casting method was successful up to adolescent age; however, more cast changes, longer stretching before each cast application and posterior ankle release will be needed to achieve functional correction.