Anatomy A patient presented with the extension of the MCP joint and flexion of IP which muscle is affected A Extensor digitorum B Abductor pollicis brevis C Abductor pollicis longus D Interossei and lumbricalis 💡 Explanation A patient presented with the extension of the MCP joint and flexion of IP which muscle is affected ✓ Correct Answer: D. Interossei and lumbricalis