<prompt> Fracture shaft of humerus is associated with which nerve damage?MedianUlnarRadialMusculocutaneous  <response>: Ans. c Radial. Ref. Orthopedics Maheshwari, 2nd77; Das surgery, 330;Last Anatomy8th70, 83,94 Radial nerve is in contact with the periosteum of the humerus, at the lower end of the radial groove. Radial nerve may be injured at time of injury or later when involved in callus formation tardy palsy. In closed fracture the nerve injury is usually neuropraxia recovery is the rule. 