Review Question - QID 216661

A 52-year-old woman complains of progressive medial-sided foot pain for the past 4 years. She has tried multiple braces and completed several courses of physical therapy during this time. On examination, she has rigid forefoot abduction with "too many toes" sign, and rigid hindfoot valgus. She is unable to do a single-heel raise and has severe sinus tarsi pain. Her radiograph is seen in Figure A. Which treatment is most indicated for this patient?