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Neuroanatomy overview
Published in Michael Y. Wang, Andrea L. Strayer, Odette A. Harris, Cathy M. Rosenberg, Praveen V. Mummaneni, Handbook of Neurosurgery, Neurology, and Spinal Medicine for Nurses and Advanced Practice Health Professionals, 2017
In the hand, the ulnar divides into superficial and deep branches: Deep branch (hypothenar muscles) Abductor digiti minimiFlexor digiti minimiOpponens digitiThe deep branch then turns laterally around the hook of the hamate to supply theInterosseiLumbricals III, and IVAdductor pollicisThe superficial branch supplies the palmar surface of ulnar 1 and 1/2 fingers
Upper limb
Published in David Heylings, Stephen Carmichael, Samuel Leinster, Janak Saada, Bari M. Logan, Ralph T. Hutchings, McMinn’s Concise Human Anatomy, 2017
David Heylings, Stephen Carmichael, Samuel Leinster, Janak Saada, Bari M. Logan, Ralph T. Hutchings
A 22-year-old man suffered a laceration of his hand while handling a knife. Physical examination reveals that he is able to extend the metacarpophalangeal joints of all his fingers of the injured hand. He cannot extend the interphalangeal (IP) joints of the fourth and fifth digits, and extension of the IP joints of the second and third digits is very weak. Which of the following nerves has most likely been injured?Deep branch of the ulnar nerve.Recurrent branch of the median nerve.Deep branch of the radial nerve.Superficial branch of the radial nerve.Median nerve in the carpal tunnel.
The Triple Heater (TH)
Published in Narda G. Robinson, Interactive Medical Acupuncture Anatomy, 2016
Radial nerve (C5-C8): Supplies all the muscles in the posterior compartment of the brachium, including the triceps brachii muscle. It divides into superficial and deep branches near the elbow. The deep branch further splits into muscular and articular branches. The posterior interosseous nerve is a continuation of the deep branch. The superficial branch only supplies cutaneous nerves, providing sensation to the dorsum of the hand and the digits. The posterior cutaneous nerve of the forearm is a branch of the radial nerve that supplies the skin along the posterior aspect of the forearm to the wrist. The posterior antebrachial cutaneous nerve arises from the radial nerve to supply the skin along the lateral arm and posterior forearm and wrist. Note in Figure 10-26 that the radial nerve branch deep to TH 10 is on its way to supply the anconeus muscle.
Management of posterior interosseous nerve (PIN) palsies after distal biceps tendon repair using a single incision technique- a conclusive approach to diagnostics and therapy
Published in Journal of Plastic Surgery and Hand Surgery, 2021
Inga S. Besmens, Marco Guidi, Andreas Schiller, David Jann, Pietro Giovanoli, Maurizio Calcagni
Nerve ultrasound is a technique regularly employed in our department. It is conducted starting proximal to a suspected lesion typically at the distal upper arm following the radial nerve distally towards its division in superficial and deep branch. The deep branch is then followed through its insertion in the supinator tunnel after which by definition it is referred to as the posterior interosseous nerve. Edema and volume changes throughout the nerve’s course can visualized by ultrasound as well as a general change in nerve caliber or a continuity interruption. As Agarwal et al. pointed out technological advances in ultrasonography allow for direct visualization of the involved nerve with assessment of the exact site, extent and type of injury. It yields unmatched information about anatomical details of the nerve [10]. This way lesions to the nerve can be identified.
Effect of dry needling on radial tunnel syndrome: A case report
Published in Physiotherapy Theory and Practice, 2019
The radial tunnel is an anatomical space extending from the radial head to the distal border of the supinator, bounded medially by the biceps tendon and brachialis and laterally by the brachioradialis, extensor carpi radialis longus, and extensor carpi radialis brevis (Portilla Molina et al., 1998). The radial nerve divides into a terminal superficial sensory and a deep branch (predominantly motor, also known as the PIN) at the level of the lateral epicondyle following which the deep branch enters the radial tunnel (Cha, York, and Tawfik, 2014; Lutz, 1991) (Figure 1). RTS describes the entrapment of the deep branch within the radial tunnel which can potentially occur at five different sites (Naam and Nemani, 2012). They include the fibrous bands anterior to the radial head, leash of Henry (anastomosing branches of the recurrent radial artery and its vein) at the radius neck, proximal edge of the supinator (also known as the arcade of Frohse), distal border of the supinator (which forms the distal edge of the radial tunnel), and the fibrous medial part of the extensor carpi radialis brevis (Moradi, Ebrahimzadeh, and Jupiter, 2015).
Therapeutic Effect of Resection, Prosthetic Replacement and Open Reduction and Internal Fixation for the Treatment of Mason Type III Radial Head Fracture
Published in Journal of Investigative Surgery, 2021
Hong-Wei Chen, Jia-Liang Tian, Yong-Zhao Zhang
The ORIF group: patients were in the supine position. The operative approach of the ORIF group was the same as that of the resection group. Care was taken not to damage the deep branch of the radial nerve, and restoration was performed under direct vision. Internal fixation was conducted using appropriate screws, absorbable rods, and a micro type-T compression plate. The approaches to treating and repairing the ligament injury were the same as those in the resection group.