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https://www.readbyqxmd.com/read/28641241/influence-of-shoulder-kinematic-estimate-on-joint-and-muscle-mechanics-predicted-by-musculoskeletal-model
#1
Yoann Blache, Mickael Begon
Little information is available in the existing literature regarding the influence of the scapular kinematic estimate method on musculoskeletal analysis. This study aimed to assess the propagation of errors due to the method used for scapular kinematics reconstruction in the workflow of musculoskeletal modeling (joint kinematics, joint torques, muscle force and joint reaction force) in shoulder and upper-limb movements. Two participants performed functional (arm elevation and rotation), daily life (eating and reaching pants pockets) and sports movements (a simulated throwing maneuver)...
June 15, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28634854/micrornas-associated-with-inflammation-in-shoulder-tendinopathy-and-glenohumeral-arthritis
#2
Finosh G Thankam, Chandra S Boosani, Matthew F Dilisio, Devendra K Agrawal
Inflammation is associated with glenohumeral arthritis and rotator cuff tendon tears. Epigenetically, miRNAs tightly regulate various genes involved in the inflammatory response. Alterations in the expression profile of miRNAs and the elucidation of their target genes with respect to the pathophysiology could improve the understanding of their regulatory role and therapeutic potential. Here, we screened key miRNAs that mediate inflammation and linked with JAK2/STAT3 pathway with respect to the coincidence of glenohumeral arthritis in patients suffering from rotator cuff injury (RCI)...
June 20, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28632288/all-arthroscopic-superior-shoulder-capsule-reconstruction-with-partial-rotator-cuff-repair
#3
E Grant Sutter, Jonathan A Godin, Grant E Garrigues
Massive irreparable rotator cuff tears are difficult to treat. Although several treatment options exist, none provides superior long-term results. There is no consensus on optimal surgical technique. Superior capsular reconstruction is an operative treatment option aimed at restoring native biomechanics of the glenohumeral joint by providing a restraint to superior subluxation. Partial rotator cuff repair for massive tears has also been shown to improve shoulder kinematics and can be performed in conjunction with superior capsule reconstruction...
June 20, 2017: Orthopedics
https://www.readbyqxmd.com/read/28626630/arthroscopic-removal-of-proximal-humerus-plates-in-chronic-post-traumatic-shoulder-stiffness
#4
Deepak N Bhatia
Proximal humerus fracture fixation may be complicated by persistent postsurgical stiffness or implant-related problems. Arthroscopic plate removal is a cosmetic and functionally beneficial procedure; however, the procedure is technically difficult in the presence of severe subdeltoid scarring. The technique described here shows an arthroscopic subdeltoid adhesiolysis and proximal humerus plate removal using systematic access to 5 regions of screw positions on the plate. After initial glenohumeral adhesiolysis, a thorough subacromial and subdeltoid bursectomy is performed...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28619059/critical-shoulder-angle-combined-with-age-predict-five-shoulder-pathologies-a-retrospective-analysis-of-1000-cases
#5
Philipp R Heuberer, Fabian Plachel, Lukas Willinger, Philipp Moroder, Brenda Laky, Leo Pauzenberger, Fritz Lomoschitz, Werner Anderl
BACKGROUND: Acromial morphology has previously been defined as a risk factor for some shoulder pathologies. Yet, study results are inconclusive and not all major shoulder diseases have been sufficiently investigated. Thus, the aim of the present study was to analyze predictive value of three radiological parameters including the critical shoulder angle, acromion index, and lateral acromion angle in relationship to symptomatic patients with either cuff tear arthropathy, glenohumeral osteoarthritis, rotator cuff tear, impingement, and tendinitis calcarea...
June 15, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28596975/patient-satisfaction-after-biceps-tenotomy
#6
Brett D Meeks, Natalie M Meeks, Andrew W Froehle, Emily Wareing, Kevin F Bonner
BACKGROUND: Biceps tenotomy and tenodesis are frequently performed for proximal biceps lesions; however, there continues to be debate as to which method is superior. This study examined patient-reported outcomes after biceps tenotomy. HYPOTHESIS: Biceps tenotomy in the setting of concomitant shoulder pathology is a reasonable option with high satisfaction rates and a low incidence of pain and cramping in middle-aged to older individuals. STUDY DESIGN: Case series; Level of evidence, 4...
May 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28594490/patients-in-whom-arthroscopic-bankart-repair-is-not-enough-evaluation-and-management-of-complex-anterior-glenohumeral-instability
#7
John M Tokish, Laurent Lafosse, Giovanni Di Giacomo, Robert Arciero
Arthroscopic Bankart repair has become the most common treatment option for patients who have anterior shoulder instability. Although arthroscopic Bankart repair is generally an effective treatment method, it may be insufficient for the treatment of many patients who have anterior shoulder instability. Risk factors for failure of arthroscopic Bankart repair include younger age, level and type of sport, and shoulder specific risks, such as ligamentous laxity and the presence of bone loss. Recently, researchers have defined the limits of arthroscopic Bankart repair and more clearly defined treatment options for patients who have a high risk for failure after arthroscopic Bankart repair...
February 15, 2017: Instructional Course Lectures
https://www.readbyqxmd.com/read/28593094/anodal-transcranial-direct-current-stimulation-tdcs-increases-isometric-strength-of-shoulder-rotators-muscles-in-handball-players
#8
Fuad Ahmad Hazime, Ronaldo Alves da Cunha, Renato Rozenblit Soliaman, Ana Clara Bezerra Romancini, Alberto de Castro Pochini, Benno Ejnisman, Abrahão Fontes Baptista
BACKGROUND: Weakness of the rotator cuff muscles can lead to imbalances in the strength of shoulder external and internal rotators, change the biomechanics of the glenohumeral joint and predispose an athlete to injury. Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique that has demonstrated promising results in a variety of health conditions. However few studies addressed its potential approach in the realm of athletics. HYPOTHESIS/PURPOSE: The purpose of this study was to investigate if transcranial direct current stimulation (tDCS) technique increases the isometric muscle strength of shoulder external and internal rotators in handball athletes...
June 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28588657/analysis-of-hydrodilatation-as-part-of-a-combined-service-for-stiff-shoulder
#9
Rajendranath Sinha, Priyesh Patel, Nicky Rose, John Tuckett, Anurag N Banerjee, John Williams, Stephen Aldridge, Paul Stuart
BACKGROUND: Adhesive capsulitis is a common cause of stiff shoulder and may result in pain and restriction of movement. The study aimed to investigate the role of hydrodilatation of the glenohumeral joint in the management of adhesive capsulitis. METHODS: Patients referred from the shoulder clinic underwent hydrodilatation under ultrasound guidance. Of 209 referred for hydrodilatation, 163 underwent the procedure and attended follow-up physiotherapy. Outcome measures were available for 118 patients (58 men and 60 women)...
July 2017: Shoulder & Elbow
https://www.readbyqxmd.com/read/28588656/measurement-of-combined-glenoid-and-hill-sachs-lesions-in-anterior-shoulder-instability
#10
Dominique M Rouleau, Laurianne Garant-Saine, Fanny Canet, Emilie Sandman, Jérémie Ménard, Julien Clément
BACKGROUND: Recurrent glenohumeral anterior instability (RGAI) frequently induces combined glenoid and Hill-Sachs bone lesions and is a risk factor for soft tissue repair failure. This cohort study describes a simple preoperative quantification method for bone loss, the Clock method, the first that combines glenoid and humeral lesions. METHODS: Computed tomography scans of 34 shoulders with RGAI were twice reviewed by three independent observers, who measured bone lesions using the new Clock method and existing validated methods...
July 2017: Shoulder & Elbow
https://www.readbyqxmd.com/read/28580270/anatomical-glenoid-reconstruction-using-fresh-osteochondral-distal-tibia-allograft-after-failed-latarjet-procedure
#11
Anthony Sanchez, Marcio B Ferrari, Ramesses A Akamefula, Rachel M Frank, George Sanchez, Matthew T Provencher
In the treatment of recurrent anterior glenohumeral instability, the Latarjet procedure has been shown to fail. This results in a need for viable revisional procedures for patients who present with this challenging pathology. We report our preferred technique for anatomical glenoid reconstruction using a fresh osteochondral distal tibia allograft after a failed Latarjet procedure. This bony augmentation technique employs a readily available dense, weight-bearing osseous tissue source that has excellent conformity, as well as the added benefit of a cartilaginous surface to correct chondral deficiencies...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28580254/use-of-a-cutting-instrument-for-fresh-osteochondral-distal-tibia-allograft-preparation-treatment-of-glenoid-bone-loss
#12
Marcio B Ferrari, Anthony Sanchez, George Sanchez, Ramesses Akamefula, Bradley M Kruckeberg, Matthew T Provencher
Glenoid bone loss presents a major risk for glenohumeral instability that has been well recognized as a cause of instability recurrence after attempted Bankart repair, and although most surgeons consider the Latarjet procedure as the gold standard, failures can occur with this technique as well and the search for alternative grafts to address glenoid bone loss is a major topic of ongoing research in the field. Of these techniques, the distal tibia allograft (DTA) has been shown to provide an excellent option to restore glenoid biomechanics, due to its congruency with the humeral head, dense bony quality, and the facility of harvest...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28580248/management-of-the-stiff-shoulder-with-arthroscopic-circumferential-capsulotomy-and-axillary-nerve-release
#13
Matthew A Tao, Vasili Karas, Jonathan C Riboh, Lior Laver, Grant E Garrigues
Management of the stiff shoulder is a common and frequently daunting clinical scenario. Arthroscopic capsular release is usually an option for management of severe, chronic glenohumeral joint contractures when conservative treatment fails. Technical hurdles including a thickened capsule, reduction in joint volume, and difficulty with positioning the shoulder intraoperatively can make this procedure challenging. In addition, incomplete release and recalcitrant stiffness are frequent issues. We believe a complete release of the capsule entails special attention to the axillary pouch and requires identification and protection of the axillary nerve...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28577712/management-and-surgical-options-for-articular-defects-in-the-shoulder
#14
REVIEW
Bryan M Saltzman, Timothy Leroux, Brian J Cole
Isolated, full-thickness chondral lesions of the glenohumeral joint are a significant pathology encountered by laborers, athletes, and the elderly. A thorough history should be obtained in any patient presenting to the office with shoulder pain and concern for the etiology being an articular cartilage defect. The first-line imaging should include plain radiographs of the glenohumeral joint; MRI and CT can be ordered as necessary to provide greater detail. Typically, the initial treatment of glenohumeral chondral disease is nonsurgical; however, many surgical treatment options have been refined to provide pain relief, create reparative tissue, or restore the articular surface...
July 2017: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/28576345/multidirectional-instability-of-the-glenohumeral-joint-etiology-classification-assessment-and-management
#15
Sarah Ann Warby, Lyn Watson, Jon J Ford, Andrew J Hahne, Tania Pizzari
Multidirectional instability of the shoulder is a type of glenohumeral joint shoulder instability. There are discrepancies in the definition and classification of this condition, which can make diagnosis and treatment selection challenging. Knowledge of contributing factors, the typical clinical presentation, and current best evidence for treatment options can assist in the diagnosis and appropriate treatment selection for this pathology. The purpose of this article is to present an overview of the current literature regarding the etiology, classification, assessment, and management of multidirectional instability of the glenohumeral joint...
May 30, 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/28573972/the-effect-of-in-vivo-rotator-cuff-muscle-contraction-on-glenohumeral-joint-translation-an-ultrasonographic-and-electromyographic-study
#16
Sangeeta Rathi, Nicholas F Taylor, Rodney A Green
The proposed stabilizing mechanism of rotator cuff muscles is to limit excessive humeral head translation. However, an accurate measurement of glenohumeral joint translation in vivo has been challenging. We aimed to measure the effect of rotator cuff muscle contraction on glenohumeral joint translation using real time ultrasound (RTUS) and electromyography. Twenty healthy adults with no history of shoulder pathology were recruited. Six intramuscular electrodes were inserted in the rotator cuff muscles (supraspinatus, upper and lower infraspinatus, teres minor, upper and lower subscapularis)...
December 8, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/28567223/reverse-total-shoulder-arthroplasty-salvage-procedure-for-failed-prior-arthroplasty
#17
Seong Hwan Jo, Jung Youn Kim, Nam Su Cho, Yong Girl Rhee
BACKGROUND: To evaluate the clinical outcome of revision of primary shoulder replacement by using reverse total shoulder arthroplasty (RTSA). METHODS: Seven patients underwent revision RTSA with a mean follow-up of 22.1 months (range, 12 to 54 months). Their mean age at the time of operation was 75.5 years (range, 70 to 80 years). Assessments were performed on the preoperative and postoperative visual analogue scale (VAS) score, muscle strength, range of motion, University of California at Los Angeles (UCLA) score, Constant score, subjective satisfaction and the anteroposterior and axillary views of the glenohumeral joint...
June 2017: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/28560144/biceps-tenoscopy-arthroscopic-evaluation-of-the-extra-articular-portion-of-the-long-head-of-biceps-tendon
#18
Adnan Saithna, Alison Longo, Jeff Leiter, Peter MacDonald, Jason Old
The recent literature shows that imaging modalities, physical examination tests, and glenohumeral arthroscopy all have low sensitivities and specificities with respect to the diagnosis of the long head of biceps tendon pathology. Biceps tenoscopy is a strategy that aims to reduce the rate of missed diagnoses by improving visualization of the extra-articular part of the tendon. This is an area of predilection of pathology that is not adequately visualized with conventional arthroscopic techniques. This technical note presents the surgical technique for biceps tenoscopy...
December 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28554714/analysis-of-shoulder-abduction-by-dynamic-shoulder-radiograph-following-suprascapular-nerve-repair-in-brachial-plexus-injury
#19
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/28554052/acute-effects-of-spinal-bracing-on-scapular-kinematics-in-adolescent-idiopathic-scoliosis
#20
Gozde Gur, Elif Turgut, Cigdem Ayhan, Gul Baltaci, Yavuz Yakut
BACKGROUND: Bracing is the most common nonsurgical treatment for adolescent idiopathic scoliosis. Spinal braces affect glenohumeral and scapulothoracic motion because they restrict trunk movements. However, the potential spinal-bracing effects on scapular kinematics are unknown. The present study aimed to investigate the acute effects of spinal bracing on scapular kinematics in adolescent idiopathic scoliosis. METHODS: Scapular kinematics, including scapular internal/external rotation, posterior/anterior tilting, and downward/upward rotation during scapular plane elevation, were evaluated in 27 in-brace and out-of-brace adolescent idiopathic scoliosis patients with a three-dimensional electromagnetic tracking system...
May 22, 2017: Clinical Biomechanics
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