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injury of the suprascapular nerve

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https://www.readbyqxmd.com/read/29475786/injury-to-the-axillary-and-suprascapular-nerves-in-rotator-cuff-arthropathy-and-after-reverse-shoulder-arthroplasty-a-prospective-electromyographic-analysis
#1
Yaiza Lopiz, Alberto Rodriguez-González, Susana Martín-Albarrán, Hector Marcelo, Carlos García-Fernández, Fernando Marco
BACKGROUND: Neurologic pre- and postoperative injuries to the axillary and/or suprascapular nerve (SSN) have a higher incidence than expected and may lead to significantly decreased functional outcomes and increased risk of reverse shoulder arthroplasty (RSA) failure. METHODS: Patients who underwent a RSA for rotator cuff tear arthropathy (RCTA) were included from December 2014 to December 2015. This study focused on the clinical (Constant score), radiographic, and pre- and postoperative electromyographic evaluations at 3 and 6 months...
February 20, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29473814/restoration-of-shoulder-motion-using-single-versus-dual-nerve-repair-in-obstetrical-brachial-plexus-injury
#2
Alain Joe Azzi, Hassan AlNaeem, Camille Aubin-Lemay, Julie Chakriya Kvann, Peter Alam, Helene Retrouvey, Salah Aldekhayel, Teanoosh Zadeh
OBJECTIVE The purpose of this study was to compare shoulder abduction and external rotation (ER) after single-nerve repair of the upper trunk alone versus dual-nerve repair of both the upper trunk and the suprascapular nerve. METHODS A retrospective chart review of a single surgeon's experience repairing obstetrical brachial plexus injuries between June 1995 and June 2015 was performed. Eight patients underwent repair of the upper trunk alone, and 10 patients underwent repair of the upper trunk and the suprascapular nerve...
May 2018: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29364045/isolated-infraspinatus-atrophy-secondary-to-suprascapular-nerve-neuropathy-results-in-altered-shoulder-muscles-activity
#3
Samuele Contemori, Andrea Biscarini
CONTEXT: Isolated infraspinatus atrophy (IIA) is a common condition among overhead-activity athletes, which affects the hitting shoulder and is caused by suprascapular nerve injury. The loss of infraspinatus function could lead to altered activity of the glenohumeral and scapulothoracic muscles and compromise the optimal shoulder function. OBJECTIVE: To assess the surface electromyographic (sEMG) activity patterns, relationships, and response latencies of relevant shoulder girdle muscles in professional volleyball players with IIA and in healthy control players...
January 24, 2018: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28956117/glenoid-morphology-and-the-safe-zone-for-protecting-the-suprascapular-nerve-during-baseplate-fixation-in-reverse-shoulder-arthroplasty
#4
Yuhui Yang, Jianlin Zuo, Tong Liu, Pu Shao, Haihe Wu, Zhongli Gao, Jianlin Xiao
PURPOSE: The purpose of this study was to investigate glenoid morphology and define the safe zone for protecting the suprascapular nerve baseplate screw during baseplate fixation in reverse shoulder arthroplasty (RSA) in a Chinese population. METHODS: Shoulder computed tomography (CT) scans from 56 subjects were retrospectively reviewed. Three-dimensional (3D) reconstruction was performed using Mimics software, and corresponding bony references were used to evaluate glenoid morphology...
March 2018: International Orthopaedics
https://www.readbyqxmd.com/read/28935431/evaluation-of-risk-to-the-suprascapular-nerve-during-arthroscopic-slap-repair-is-a-posterior-portal-safer
#5
Mark J Sando, Jason A Grieshober, Hyunchul Kim, James C Dreese, R Frank Henn
PURPOSE: The purpose of this study was to compare the risk of glenoid perforation during SLAP repair for suture anchors placed through an anterolateral portal versus a posterolateral portal of Wilmington. METHODS: Ten bilateral cadaveric shoulders were randomized to suture anchor placement through an anterolateral portal on one shoulder and a posterolateral portal on the contralateral shoulder. Anchors were placed into anterior, posterior, and far posterior positions on the glenoid rim (1 o'clock, 11 o'clock, and 10 o'clock positions for right shoulders)...
February 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28872413/restoration-of-active-pick-up-function-in-patients-with-total-brachial-plexus-avulsion-injuries
#6
Feng Li, Shu-Feng Wang, Peng-Cheng Li, Yun-Hao Xue, Ji-Yao Zou, Wen-Jun Li
We designed multiple nerve transfers in one surgery to restore active pick-up function in patients with total brachial plexus avulsion injuries. Forty patients with total brachial plexus avulsion injuries first underwent multiple nerve transfers. These included transfer of the accessory nerve onto the suprascapular nerve to recover shoulder abduction, contralateral C7 nerve onto the lower trunk via the modified prespinal route with direct coaptation to restore lower trunk function and onto the musculocutaneous nerve with interpositional bridging by medial antebrachial cutaneous nerve arising from lower trunk to restore elbow flexion, and the phrenic nerve onto the posterior division of lower trunk to recover elbow and finger extension...
March 2018: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28711169/the-risk-of-suprascapular-and-axillary-nerve-injury-in-reverse-total-shoulder-arthroplasty-an-anatomic-study
#7
Tim Leschinger, Michael Hackl, Eduard Buess, Sebastian Lappen, Martin Scaal, Lars Peter Müller, Kilian Wegmann
PURPOSE: Implantation of a reverse total shoulder arthroplasty (rTSA) places the axillary and suprascapular nerves at risk. The aim of this anatomic study was to digitally analyse the location of these nerves in relation to bony landmarks in order to predict their path and thereby help to reduce the risk of neurological complications during the procedure. METHODS: A total of 22 human cadaveric shoulder specimens were used in this study. The axillary and suprascapular nerves were dissected, and radiopaque threads were sutured onto the nerves without mobilizing the nerves from their native paths...
October 2017: Injury
https://www.readbyqxmd.com/read/28691025/protective-and-predisposing-morphological-factors-in-suprascapular-nerve-entrapment-syndrome-a-fundamental-review-based-on-recent-observations
#8
REVIEW
Piotr Łabętowicz, Marek Synder, Mariusz Wojciechowski, Krzysztof Orczyk, Hubert Jezierski, Mirosław Topol, Michał Polguj
Suprascapular nerve entrapment syndrome (SNES) is a neuropathy caused by compression of the nerve along its course. The most common compression sites include the suprascapular notch and the spinoglenoid notch. The aim of this article was to review the anatomical factors influencing the occurrence of SNES in the light of the newest reports. Potential predisposing morphological factors include a V-shaped, narrow, or "deep" suprascapular notch; a band-shaped, bifurcated, or completely ossified superior transverse scapular ligament (STSL); particular arrangements of the suprascapular nerve and vessels at the suprascapular notch...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28605232/sensorimotor-control-of-the-shoulder-in-professional-volleyball-players-with-isolated-infraspinatus-muscle-atrophy
#9
Samuele Contemori, Andrea Biscarini, Fabio Massimo Botti, Daniele Busti, Roberto Panichi, Vito Enrico Pettorossi
CONTEXT: Isolated infraspinatus muscle atrophy (IIMA) only affects the hitting shoulder of overhead-activity athletes, and is caused by suprascapular nerve neuropathy. No study has assessed the static and dynamic stability of the shoulder in overhead professional athletes with IIMA to reveal possible shoulder sensorimotor alterations. OBJECTIVE: To assess the shoulder static stability, dynamic stability, and strength in professional volleyball players with IIMA and in healthy control players...
June 12, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28555532/insights-into-the-epidemiology-aetiology-and-associations-of-infraspinatus-atrophy-in-overhead-athletes-a-systematic-review
#10
REVIEW
Dimitrios Challoumas, Georgios Dimitrakakis
Infraspinatus atrophy (IA) is much more prevalent in overhead sports compared with the general population. Its exact aetiology in this group of athletes remains unclear and definitive associations with pathology and performance have not yet been reached. The aim of this systematic review is to present the evidence on IA in overhead athletes focussing on the proposed mechanisms of suprascapular neuropathy and its associations with shoulder pathology and performance. A thorough literature search via Medline, EMBASE and Scopus was performed...
September 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28554714/analysis-of-shoulder-abduction-by-dynamic-shoulder-radiograph-following-suprascapular-nerve-repair-in-brachial-plexus-injury
#11
Takashi Shimoe, Kazuteru Doi, Tomas Madura, Kannan K Kumar, Tristram D Montales, Yasunori Hattori, Sotetsu Sakamoto, Kiminori Yukata, Munehito Yoshida
BACKGROUND: Suprascapular nerve repair is a widely-prioritized procedure for shoulder reconstruction following brachial plexus injury. Although this procedure only reconstructs glenohumeral joint motion, the standard clinical assessment of shoulder function also includes the scapulothoracic joint contribution. The purpose of this preliminary study was to develop an objective method to accurately analyze shoulder abduction following suprascapular nerve repair in brachial plexus injury patients...
May 26, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28370538/shoulder-position-sense-in-volleyball-players-with-infraspinatus-atrophy-secondary-to-suprascapular-nerve-neuropathy
#12
S Contemori, A Biscarini
Isolated infraspinatus atrophy (IIA) is a common condition among overhead-activity athletes, which affects the hitting shoulder and is caused by suprascapular nerve injury. As the suprascapular nerve is a mixed nerve, such damage could lead to reduced afferent proprioceptive information and impaired shoulder sensorimotor control. This study aimed to evaluate the proprioception of the shoulder with IIA, through the assessment of shoulder position sense. The shoulder position sense was assessed in 24 professional volleyball players (12 players with IIA and 12 healthy players) with a blind dynamic shoulder repositioning test (all participants were blindfolded during the test)...
January 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28316590/rehabilitation-using-guided-cerebral-plasticity-of-a-brachial-plexus-injury-treated-with-intercostal-and-phrenic-nerve-transfers
#13
Lars B Dahlin, Gert Andersson, Clas Backman, Hampus Svensson, Anders Björkman
Recovery after surgical reconstruction of a brachial plexus injury using nerve grafting and nerve transfer procedures is a function of peripheral nerve regeneration and cerebral reorganization. A 15-year-old boy, with traumatic avulsion of nerve roots C5-C7 and a non-rupture of C8-T1, was operated 3 weeks after the injury with nerve transfers: (a) terminal part of the accessory nerve to the suprascapular nerve, (b) the second and third intercostal nerves to the axillary nerve, and (c) the fourth to sixth intercostal nerves to the musculocutaneous nerve...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28272927/muscle-degeneration-associated-with-rotator-cuff-tendon-release-and-or-denervation-in-sheep
#14
Christian Gerber, Dominik C Meyer, Martin Flück, Paola Valdivieso, Brigitte von Rechenberg, Mario C Benn, Karl Wieser
BACKGROUND: The effect of an additional neurological injury (suprascapular nerve traction injury) to a chronically retracted rotator cuff muscle is incompletely understood and warrants clarification. PURPOSE: To investigate the microscopic and macroscopic muscle degeneration patterns caused by tendon release and/or muscle denervation in a sheep rotator cuff model. STUDY DESIGN: Controlled laboratory study. METHODS: Infraspinatus muscle biopsy specimens (for histological analysis) were obtained from 18 Swiss alpine sheep before and 16 weeks after release of the infraspinatus tendon (tenotomy [T] group; n = 6), transection of the suprascapular nerve (neurectomy [N] group; n = 6), or tendon release plus nerve transection (tenotomy + neurectomy [T&N] group; n = 6)...
March 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28003075/editorial-commentary-arthroscopically-assisted-acromioclavicular-joint-reconstruction-not-seeing-does-not-mean-do-not-worry
#15
EDITORIAL
Andreas B Imhoff, Felix Dyrna
To minimize risks during arthroscopic-assisted reduction and internal fixation of acromioclavicular dislocation, drilling should only be performed with an anatomically reduced clavicle. This re-creates the important distances to the neurovascular structures because a posteriorly displaced clavicle reduces the distance to the suprascapular nerve. In addition, visualization is of high importance for the arthroscopic coracoid preparation, as are mini-open incisions, to create an accurate and well-placed tunnel for drilling...
January 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27913804/restoration-of-shoulder-abduction-in-brachial-plexus-avulsion-injuries-with-double-neurotization-from-the-spinal-accessory-nerve-a-report-of-13-cases
#16
K W S J Huan, J S W Tan, S H Tan, L C Teoh, F C Yong
In upper (C5-C7) and total (C5-T1) root avulsion brachial plexus injury, a method of double neurotization from a single donor spinal accessory nerve to two target nerves (suprascapular nerve and axillary nerve) may be done, leaving donor nerves available for reconstruction procedures to restore other aspects of upper limb function. A mean range of shoulder abduction of 91° (SD 25°) was achieved through this procedure in our study of 13 cases, of which seven cases were C5-C7 root avulsion and six cases were C5-T1 root avulsion brachial plexus injuries...
September 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/27823370/peripheral-neuropathy-of-a-forelimb-in-horses-27-cases-2000-2013
#17
Anne-Laure Emond, Lélia Bertoni, Maeva Seignour, Virginie Coudry, Jean-Marie Denoix
OBJECTIVE To describe the clinical features, diagnostic procedures, management, and outcome of horses with peripheral neuropathy of a forelimb. DESIGN Retrospective case series. ANIMALS 27 horses. PROCEDURES Records from 2000 to 2013 were reviewed to identify horses with peripheral neuropathy of a forelimb. Horses were grouped as having predominant lesions of a suprascapular nerve, axillary nerve, or radial nerve (alone or in association with other brachial plexus nerves) on the basis of physical examination and diagnostic imaging findings...
November 15, 2016: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/27781982/rhomboid-nerve-transfer-to-the-suprascapular-nerve-for-shoulder-reanimation-in-brachial-plexus-palsy-a-clinical-report
#18
J-N Goubier, F Teboul
Recovery of shoulder function is a real challenge in cases of partial brachial plexus palsy. Currently, in C5-C6 root injuries, transfer of the long head of the triceps brachii branch is done to revive the deltoid muscle. Spinal accessory nerve transfer is typically used for reanimation of the suprascapular nerve. We propose an alternative technique in which the nerve of the rhomboid muscles is transferred to the suprascapular nerve. A 33-year-old male patient with a C5-C6 brachial plexus injury with shoulder and elbow flexion palsy underwent surgery 7 months after the injury...
October 2016: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/27734111/reliability-of-a-ct-reconstruction-for-preoperative-surgical-planning-in-the-arthroscopic-latarjet-procedure
#19
Alexandre Hardy, Philippe Loriaut, Benjamin Granger, Ahmed Neffati, Audrey Massein, Laurent Casabianca, Hugues Pascal-Moussellard, Antoine Gerometta
PURPOSE: The arthroscopic Latarjet procedure has provided reliable results in the treatment of anterior shoulder instability. However, this procedure remains technically challenging and is related to several complications. The morphology of the coracoid and the glenoid are inconsistent. Inadequate coracoid and glenoid preparing may lead to mismatching between their surfaces. Inadequate screws lengthening and orientation are a major concern. Too long screws can lead to suprascapular nerve injuries or hardware irritation, whereas too short screws can lead to nonunions, fibrous unions or migration of the bone block...
January 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27589914/an-anatomical-investigation-of-clock-face-landmarks-around-the-glenoid-for-shoulder-arthroscopy-orientation
#20
Ryuzo Arai, Hideto Harada, Hiroyuki Tsukiyama, Yoshimitsu Takahashi, Masahiko Kobayashi, Takahiko Saji, Shuichi Matsuda
BACKGROUND: For shoulder arthroscopy, few anatomical landmarks are available and inexperienced surgeons tend to be adrift due to the limited visual field of the scope. The purpose of this study was to demonstrate the useful landmarks around the glenoid for accurate orientation, and also the safe distance to avoid suprascapular nerve injury during surgical procedures around the glenoid. METHODS: In 15 human solution-fixed cadavers, a cross-section of the shoulder joint on the labrum surface was created...
November 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
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