A boy presents with an injury to the medial epicondyle of the humerus. Which of the following would not be seen -

Medial epicondyle fracture causes injury to the ulnar nerve. In ulnar nerve palsy only following muscles of 3rd & 4th fingers are paralysed:- i) Palmar & Dorsal interossei ii) 3rd & 4th lumbricals iii) Hypothenar muscles However, extensors of these two fingers are not paralysed which are supplied by the radial nerve. About other options The weakness of ulnar deviation & flexion is due to paralysis of FCU and medial half of FDP. There atrophy of hypothenar eminence and sensory loss over the hypothenar area.