Fig. 3From: Tips and tricks to achieve osteotomy healing and prevent refracture after ulnar shortening osteotomyThe second metacarpal cortical percentage (2MCP) for assessment of the bone quality. 2MCP is calculated by the formula [(a, b)/A] × 100 (a outer diameter of the second metacarpal isthmus, b inner diameter of the second metacarpal isthmus)Back to article page