Shoulder

• Fracture to surgical neck of humerus = Injury to axillary nerve

  Injury to axillary nerve = loss of sensation over deltoid muscle and unable to complete abduction of arm
• Injury to midshaft of humerus = injury to radial nerve Injury to radial nerve = wrist drop (radial nerve is extensor nerve)
• Supracondylar fracture = injury to median nerve

  Injury to median nerve = flexors and pronators in arm paralysed. Unable to abduct thumb
• Fracture of medial epicondyle (common paediatric fracture) = ulnar nerve injury

  Ulnar nerve injury = sensation loss of 4th and 5th digit and clawing of these digits