Damage to the Radial nerve
{"Image DocumentName": "Damage to the Radial nerve", "Image ImageDescription": "Injury proximal to the origin of Triceps:  No extension of elbow (elbow is flexed)  No triceps reflex.  Wrist drop (all extensor muscles and the. Supinator are paralyzed), thumb is flexed. and adducted. Sensory loss: dorsolateral lower brachial. region, posterior surface of forearm, dorsum of the hand and radial side of. proximal phalanges. Injury of the nerve in radial groove: In fractures of humerus. Triceps muscle is usually functioning. Wirst drop and sensory loss in. dorsolateral aspect of the forearm and hand. Plus all other problems mentioned above. Nerve injury in forearm: Here the deep radial nerve is injured (wrist drop) Extension of the thumb and metacarpal joints is. disturbed. Sensation is usually preserved.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}