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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 Articulations of the Upper Member
Published in Gene L. Colborn, David B. Lause, Musculoskeletal Anatomy, 2009
Gene L. Colborn, David B. Lause
Again identify the common interosseous artery and its posterior interosseous branch. Note the course of the deep branch of the radial nerve as it passes into, and through, the supinator muscle. Divide the biceps, brachialis and triceps at their insertions and reflect them away from the elbow. Also reflext the anconeus toward its ulnar insertion. Pronate and supinate the forearm to demonstrate the functions of the proximal and distal radio-ulnar joints.
Upper Limb
Published in Rui Diogo, Drew M. Noden, Christopher M. Smith, Julia Molnar, Julia C. Boughner, Claudia Barrocas, Joana Bruno, Understanding Human Anatomy and Pathology, 2018
Rui Diogo, Drew M. Noden, Christopher M. Smith, Julia Molnar, Julia C. Boughner, Claudia Barrocas, Joana Bruno
Keeping in mind the overall organization just discussed, it becomes relatively easy to learn the details (Figure 4.3). After providing motor innervation to the three anterior arm muscles—biceps brachii, coracobrachialis, and brachialis—the musculocutaneous nerve gives rise to the lateral cutaneous nerve of the forearm. The radial nerve runs through the radial (spiral) groove of the humerus and provides motor innervation to the posterior (extensor) muscles of the arm. It then divides, at the level of the elbow, into the deep branch of the radial nerve and the superficial branch of the radial nerve. The superficial branch is purely sensory; it follows the brachioradialis muscle toward the wrist, and then becomes subcutaneous at the level of the wrist to innervate the skin on the dorsum of the thumb and lateral wrist. The deep branch of the radial nerve, and its continuation after crossing deep to the supinator muscle—the posterior interosseous nerve, so named because it runs posteriorly (dorsally) to the interosseous membrane—provide motor innervation for all the posterior muscles of the forearm. At the level of the elbow, the median nerve also divides into two branches: One is the continuation of the median nerve itself that travels between the deep and superficial muscles of the anterior forearm; the other is named the anterior interosseous nerve because it runs anteriorly (ventrally) along the interosseous membrane. Therefore, a major difference between the anterior and posterior interosseous nerves, which is often not emphasized enough to students, is that the former is a branch of the median nerve, while the latter is the continuation of the deep branch of the radial nerve.
Effect of dry needling on radial tunnel syndrome: A case report
Published in Physiotherapy Theory and Practice, 2019
Though RTS has a small annual prevalence rate of 0.003% (Dang and Rodner, 2009), varied causes have been described in the literature. They broadly include anatomical anomalies (e.g. accessory muscle slips and fascial bands), trauma (i.e. fracture), tumor (e.g. lipoma and hemangioma), inflammation (e.g. Neuroma and synovitis), and repetitive stress or overuse (Moradi, Ebrahimzadeh, and Jupiter, 2015; Portilla Molina et al., 1998). Despite the fact that both RTS and PIN syndromes describe entrapment of the deep branch of the radial nerve, the latter presents as true motor weakness, a distinction that is useful in making a differential diagnosis between the two syndromes (Cha, York, and Tawfik, 2014; Stanley, 2006). Other differentials include lateral epicondylitis, anconeus muscle tendonitis, de Quervain’s tenosynovitis, and brachial neuritis/double crush syndrome (Stanley, 2006).
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.