<prompt> Fracture of shaft of humerus leads to:Radial nerve injuryUlnar nerve injuryMedian nerve injuryMusculocutaneous nerve injury  <response>: Ans. A Radial nerve injuryRef: BDC, 6th ed. vol. I pg. 98 Radial nerve gets injured in cases of humerus shaft fracture. Ulnar nerve injury may take place when there is damage to medial epicondyle of humerus and in cases of tardive ulnar palsy. Median nerve damage can be secondary to compression for ex- carpal tunnel syndrome, which may lead to gun stock deformity, ape thumb deformity.Extra Mile Median nerve aka labourers nerve as it supplies most of the long muscles of the front of forearm. Ulnar nerve aka musicians nerve as it controls the fine movements of hand. 