Orthopaedics A patient of supracondylar humerus fracture is unable to flex interphalangeal joint of the thumb. Which nerve is most likely injured? A Median nerve B Superficial branch of ulnar nerve C AIN D Pin 💡 Explanation A patient of supracondylar humerus fracture is unable to flex interphalangeal joint of the thumb. Which nerve is most likely injured? ✓ Correct Answer: C. AIN