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20 maj 2024 · Overview. Nerve roots – C5-T1. Sensory – Innervates most of the skin of the posterior forearm, the lateral aspect of the dorsum of the hand, and the dorsal surface of the lateral three and a half digits. Motor – Innervates the triceps brachii and the extensor muscles in the forearm.
29 kwi 2023 · The superficial branch continues the course of the radial nerve and enters the hand from the radial side. This branch is also known as the " sensory branch " because of its primary role to provide sensation to the thenar eminence and dorsal aspect of the radial 3 and a half digits of the hand.
13 lis 2015 · The radial nerve is responsible for the sensory supply to: Posterior arm and forearm; Lateral ⅔ of dorsum of hand; Proximal dorsal aspect of lateral 3½ fingers (thumb, index, middle and half of ring finger) Motor supply. The radial nerve supplies the triceps in the posterior compartment of the arm. The triceps extends and adducts shoulder ...
The radial nerve is formed from nerve fibres from all the roots of the brachial plexus. After it is formed, it spirals down the arm in the radial groove of the humerus, giving motor innervation to the triceps brachii muscle, it also innervates the extensor muscles in the forearm.
29 paź 2019 · bottom line = Safe zone posteriorly of 10 cm distal to the lateral acromion and 10 cm proximal to lateral epicondyle. branches in spiral groove. inferior lateral cutaneous nerve of the arm. posterior cutaneous nerve of the forearm. branch to lateral head of triceps.
5 lis 2023 · The radial nerve is a peripheral nerve supplying specific parts of the arm, forearm, wrist, and hand (see Image. Posterior Upper Extremity Nerves). This nerve has both motor and sensory functions. The motor branches stimulate the posterior arm muscles, posterior forearm muscles, and extrinsic wrist and hand extensors.
13 lis 2023 · The important nerves from the brachial plexus that innervate the hand and wrist are the median, ulnar, and radial nerves: The median nerve passes through the carpal tunnel under the flexor retinaculum of the hand and distally divides into recurrent and common palmar digital branches.
