This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Humerus Fractures, Subject name: Orthopaedics
Which of the following nerve injury is most commonly associated with a humerus shaft fracture? 
Select and explain. 
A. Radial nerve, B. Median nerve, C. Axillary nerve, D. Ulnar nerve
A: Radial nerve
Answer: A: Radial nerve 
Explanation: Ans. is 'a' i.e., Radial nerve NERVE INJURIES ASSOCIATED WITH VARIOUS FRACTURESFRACTURENERVE INVOLVEDFracture Shaft HumerusRadial NerveSupracondylar humerus fractureAnterior Interosseus nervePosterior dislocation of hipSciatic nerveFracture neck of fibulaCommon peroneal nerveFracture medial epicondyle of humerusUlnar nerveFracture radial headPosterior interosseus nerve