Concave and convex reamer set creates a matching hemispherical PIP interface through uniform articular tissue removal Matching ball and socket geometry provides infinite degrees of freedom for correction while maintaining joint apposition Hemispherical reaming provides up to 200% more surface area compared to traditional linear cuts Allows for minimal joint resection to maintain toe length as needed for desired correction Enclosed circumferential cutting concave reamer minimizes potential soft tissue interference (patent pending)