An active 70-year-old female presents to your office with increasing foot pain over the last several years. She enjoys walking however is limited to 2 blocks due to pain. Her pain is greatest with "push off". She has attempted shoe wear modifications, orthotics, physical therapy and non steroidal anti-inflammatories with limited relief of her symptoms. Her current weight bearing radiographs are seen in Figures A, B and C. What is the most appropriate treatment at this time?