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Hiroyuki Kato - One of the best experts on this subject based on the ideXlab platform.
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pathological findings of hourglass like constriction in spontaneous Posterior Interosseous Nerve palsy
Journal of Hand Surgery (European Volume), 2020Co-Authors: Masatoshi Komatsu, Kensuke Ochi, Hitoshi Nukada, Masanori Hayashi, Hiroshi Yamazaki, Hiroyuki KatoAbstract:We report the pathological findings of hourglass-like fascicular constriction (HLFC) under optical and electron microscopy. A 24-year-old man with spontaneous Posterior Interosseous Nerve palsy was treated by interfascicular neurolysis at 29 weeks after onset. One fascicle in the radial Nerve presented severe HLFC with torsion at 5 cm proximal to the elbow. Functional recovery was achieved by resection of the enlarged fascicle including HLFC and sural Nerve grafting. Proximal to the HLFC, the endoneurium was filled with clusters of regenerating Nerve fibers. At the level of the HLFC, a complete loss of myelinated Nerve fibers and vascular occlusion of endo- and perineurial vessels were found. Few regenerating Nerve fibers were observed. Distal to the HLFC, severe endoneurial edema, a complete loss of myelinated and unmyelinated Nerve fibers, and bands of Bungner were noted. These electron microscopic findings demonstrated a detailed pathology of the Nerve around the HLFC.
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pathophysiology and treatment of spontaneous anterior Interosseous Nerve palsy and spontaneous Posterior Interosseous Nerve palsy
Brain and nerve, 2014Co-Authors: Kensuke Ochi, Hiroyuki KatoAbstract:Abstract Spontaneous anterior or Posterior Interosseous Nerve palsy is usually treated as a part of neuralgic amyotrophy. However, recent studies have shown that many of these cases involved fascicular constriction in the affected Nerves, and interfascicular neurolysis may be a better option than conservative treatment in cases that do not show spontaneous recovery within several months. Here, we review recent studies on these palsies.
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acute Posterior Interosseous Nerve palsy caused by septic arthritis of the elbow a case report
Journal of Hand Surgery (European Volume), 2003Co-Authors: Hiroyuki Kato, Akio Minami, Norimasa Iwasaki, Tamotsu KamishimaAbstract:Abstract A rare case of acute Posterior Interosseous Nerve palsy caused by septic elbow arthritis is reported. The Nerve was compressed beneath the arcade of Frohse by hypertrophied synovium and joint fluid at the anterior aspect of the radial neck. Decompression of the Nerve, synovectomy, and irrigation of the elbow joint were done. effective. Six months after the surgery the Nerve palsy had recovered completely. Two years after surgery there was no recurrence of the infection or Nerve palsy. (J Hand Surg 2003;28A:44–47. Copyright © 2003 by the American Society for Surgery of the Hand.)
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clinical features and management of traumatic Posterior Interosseous Nerve palsy
Journal of Hand Surgery (European Volume), 1998Co-Authors: Kazuhiko Hirachi, Hiroyuki Kato, Akio Minami, Toshihiko Kasashima, Kiyoshi KanedaAbstract:The clinical features and results of treatment were reviewed in 17 traumatic palsies of the Posterior Interosseous Nerve. Variations in clinical features depended on whether the recurrent branch or descending branch of the Posterior Interosseous Nerve was injured. Seven patients had Nerve repair, and two were treated by tendon transfers. Eight patients were treated conservatively. Sixteen of 17 patients recovered to more than M4 motor power at final follow-up. Associated muscle damage worsened the functional result.
Jayme Augusto Bertelli - One of the best experts on this subject based on the ideXlab platform.
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transfer of supinator motor branches to the Posterior Interosseous Nerve to reconstruct thumb and finger extension in tetraplegia case report
Journal of Hand Surgery (European Volume), 2010Co-Authors: Jayme Augusto Bertelli, Cristiano Paulo Tacca, Marcos Flavio Ghizoni, Paulo Roberto Kechele, Marcos Antonio SantosAbstract:We treated a patient with tetraplegia who had paralysis of thumb and finger extension by transferring supinator motor branches to the Posterior Interosseous Nerve. Surgery was performed bilaterally, 7 months after a spinal cord injury. Six months after surgery, with the wrist in neutral, extension of the thumb and finger were almost full, bilaterally. In tetraplegic patients with strong wrist extensors, supinator motor branch transfer is a promising new alternative for the reconstruction of thumb and finger extension.
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transfer of supinator motor branches to the Posterior Interosseous Nerve in c7 t1 brachial plexus palsy
Journal of Neurosurgery, 2010Co-Authors: Jayme Augusto Bertelli, Marcos Flavio GhizoniAbstract:Object In C7–T1 palsies of the brachial plexus, shoulder and elbow function are preserved, but finger motion is absent. Finger flexion has been reconstructed by tendon or Nerve transfers. Finger extension has been restored ineffectively by attaching the extensor tendons to the distal aspect of the dorsal radius (termed tenodesis) or by tendon transfers. In these palsies, supinator muscle function is preserved, because innervation stems from the C-6 root. The feasibility of transferring supinator branches to the Posterior Interosseous Nerve has been documented in a previous anatomical study. In this paper, the authors report the clinical results of supinator motor Nerve transfer to the Posterior Interosseous Nerve in 4 patients with a C7–T1 root lesion. Methods Four adult patients with C7–T1 root lesions underwent surgery between 5 and 7 months postinjury. The patients had preserved motion of the shoulder, elbow, and wrist, but they had complete palsy of finger motion. They underwent finger flexion reconst...
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Anatomical feasibility of transferring supinator motor branches to the Posterior Interosseous Nerve in C7-T1 brachial plexus palsies. Laboratory investigation.
Journal of neurosurgery, 2009Co-Authors: Jayme Augusto Bertelli, Paulo Roberto Kechele, Marcos Antonio Santos, Bruno Adler Maccagnan Pinheiro Besen, Hamilton DuarteAbstract:Object In C7–T1 palsies of the brachial plexus, shoulder and elbow function is preserved, but finger motion is absent. Finger flexion has been reconstructed using tendon or Nerve transfers. Finger extension has been restored ineffectively by attaching the extensor tendons to the distal side of the dorsal radius (that is, tenodesis). In these types of Nerve palsy, supinator muscle function is preserved because innervation stems from the C-6 root. In the present study, the authors investigated the anatomy and the feasibility of transferring the supinator motor branches to the Posterior Interosseous Nerve. Sacrifice of the supinator motor branches does not abolish supination because biceps muscle function is preserved in lower-type injuries of the brachial plexus. Methods The Posterior Interosseous Nerve was dissected in 20 formalin-fixed forearms. Through Posterior forearm access, the Posterior Interosseous Nerve and its motor branches to the supinator muscle were dissected. Specimens were removed for histo...
Lei Zhang - One of the best experts on this subject based on the ideXlab platform.
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clinical use of supinator motor branch transfer to the Posterior Interosseous Nerve in c7 t1 brachial plexus palsies clinical article
Journal of Neurosurgery, 2010Co-Authors: Zhen Dong, Chenggang Zhang, Lei ZhangAbstract:Object In C7–T1 brachial plexus palsies, finger extension and flexion are absent. At the authors' institution, finger flexion has been successfully reconstructed by transferring the brachialis motor branch to the anterior Interosseous Nerve. However, there is no reliable method for restoring finger extension. In the present study, the authors examined the surgical results of transferring the supinator motor branch to the Posterior Interosseous Nerve. Methods Since October 2007, the authors have performed a supinator motor branch transfer to the Posterior Interosseous Nerve in 4 patients. The patients underwent follow-up every 3–4 months postoperatively. Results Finger extension appeared between 5 and 9 months in the first 3 cases and demonstrated promising improvement over time. One recent case remains under follow-up. Conclusions A supinator motor branch to Posterior Interosseous Nerve transfer leads to reliable recovery of thumb and finger extension. Therefore, it is a viable option for C7–T1 brachial p...
Marcos Flavio Ghizoni - One of the best experts on this subject based on the ideXlab platform.
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transfer of supinator motor branches to the Posterior Interosseous Nerve to reconstruct thumb and finger extension in tetraplegia case report
Journal of Hand Surgery (European Volume), 2010Co-Authors: Jayme Augusto Bertelli, Cristiano Paulo Tacca, Marcos Flavio Ghizoni, Paulo Roberto Kechele, Marcos Antonio SantosAbstract:We treated a patient with tetraplegia who had paralysis of thumb and finger extension by transferring supinator motor branches to the Posterior Interosseous Nerve. Surgery was performed bilaterally, 7 months after a spinal cord injury. Six months after surgery, with the wrist in neutral, extension of the thumb and finger were almost full, bilaterally. In tetraplegic patients with strong wrist extensors, supinator motor branch transfer is a promising new alternative for the reconstruction of thumb and finger extension.
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transfer of supinator motor branches to the Posterior Interosseous Nerve in c7 t1 brachial plexus palsy
Journal of Neurosurgery, 2010Co-Authors: Jayme Augusto Bertelli, Marcos Flavio GhizoniAbstract:Object In C7–T1 palsies of the brachial plexus, shoulder and elbow function are preserved, but finger motion is absent. Finger flexion has been reconstructed by tendon or Nerve transfers. Finger extension has been restored ineffectively by attaching the extensor tendons to the distal aspect of the dorsal radius (termed tenodesis) or by tendon transfers. In these palsies, supinator muscle function is preserved, because innervation stems from the C-6 root. The feasibility of transferring supinator branches to the Posterior Interosseous Nerve has been documented in a previous anatomical study. In this paper, the authors report the clinical results of supinator motor Nerve transfer to the Posterior Interosseous Nerve in 4 patients with a C7–T1 root lesion. Methods Four adult patients with C7–T1 root lesions underwent surgery between 5 and 7 months postinjury. The patients had preserved motion of the shoulder, elbow, and wrist, but they had complete palsy of finger motion. They underwent finger flexion reconst...
Srinath Kamineni - One of the best experts on this subject based on the ideXlab platform.
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Posterior Interosseous Nerve localization within the proximal forearm a patient normalized parameter
PMC, 2017Co-Authors: Srinath Kamineni, Crystal R Norgren, Evan M Davidson, Ellora P Kamineni, Andrew S DeaneAbstract:Posterior Interosseous Nerve localization within the proximal forearm - a patient normalized parameter
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tardy Posterior Interosseous Nerve palsy associated with radial head fracture a case report
Cases Journal, 2009Co-Authors: Jas S Daurka, Alvin Chen, Kashif Akhtar, Srinath KamineniAbstract:A 55 year old gentleman presented with tardy Posterior Interosseous Nerve palsy associated with radial head fracture. The patient developed symptoms of wrist drop 24 hours after the injury whilst awaiting surgery for his Mason III radial head fracture. EMG studies confirmed the presence of a Posterior Interosseous Nerve lesion. Open exploration revealed oedematous soft tissues surrounding the Nerve. The proximity of the Nerve to the fracture and its course through the arcade of Frohse make it susceptible to injury, from the initial traumatic event and the following oedema. A full recovery occurred after exploration and decompression of the Nerve.
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tardy Posterior Interosseous Nerve palsy associated with radial head fracture a case report
Cases Journal, 2009Co-Authors: Jas S Daurka, Alvin Chen, Kashif Akhtar, Srinath KamineniAbstract:Background A 55 year old gentleman presented with tardy Posterior Interosseous Nerve palsy associated with radial head fracture.
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the Posterior Interosseous Nerve and the posterolateral approach to the proximal radius
Journal of Bone and Joint Surgery American Volume, 1998Co-Authors: J D Witt, Srinath KamineniAbstract:We dissected 21 cadaver elbows to determine the relationship of the Posterior Interosseous Nerve to the posterolateral approach to the elbow and head of the radius. At the distal end of the exposure the first branches at risk, those to extensor carpi ulnaris, were on average 6.0 ± 1.0 cm (4.0 to 8.4) from the articular surface of the radial head. When using the posterolateral approach it is important that the interval between extensor carpi ulnaris and anconeus is clearly identified with the forearm fully pronated. The supinator should be released close to its ulnar border. It is safe to expose the proximal radius as far as the distal aspect of the bicipital tuberosity.