Pharmacology All India exam e1b757a9 All are features of anterior interosseous nerve (AIN) syndrome except NOT RELATED A There is sensory loss on the medial 2 fingers B Inability to perform OK-sign (approximate thumb and tip of index finger) C AIN is entrapped under pronator teres, flexor digitorum profundus, flexor carpi radialis D Conservative treatment generally, surgery rarely High-Yield Explanation There is sensory loss on the medial 2 fingersThere is no sensory impairment in anterior interossous nerve (AIN) syndrome.