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https://www.readbyqxmd.com/read/29777714/efficiency-of-neuromuscular-electrical-stimulation-and-transcutaneous-nerve-stimulation-on-hemiplegic-shoulder-pain-a-prospective-randomized-controlled-trial
#1
Meimei Zhou, Fang Li, Weibo Lu, Junfa Wu, Song Pei
OBJECTIVE: To compare the efficacy of neuromuscular electrical stimulation (NMES) and transcutaneous nerve stimulation (TENS) on hemiplegic shoulder pain (HSP). DESIGN: This is a prospective randomized controlled trial (RCT). SETTING: A total of 184 HSP patients, aged 18-80 years, were recruited in the Rehabilitation Hospital from February 2014 to July 2016. The Ethics approval was obtained from the Institutional Review Board of the Hospital...
May 16, 2018: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29767810/a-novel-remaining-tendon-preserving-repair-technique-leads-to-improved-outcomes-in-special-rotator-cuff-tear-patterns
#2
Yoon Sang Jeon, Rag Gyu Kim, Sang-Jin Shin
INTRODUCTION: The purpose of this study was to identify the tear pattern that could be anatomically repaired by preserving the remaining tendon on footprint and evaluate clinical outcomes of patients who underwent remaining tendon preserving cuff repair. MATERIALS AND METHODS: Of 523 patients with full-thickness rotator cuff tears who underwent arthroscopic repair, 41 (7.8%) patients had repairable rotator cuff tear while preserving the remaining tendon. Among them, 31 patients were followed-up for more than 2 years, including 26 patients with posterior L-shaped tear and 5 patients with transtendinous tear patterns...
May 16, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29765879/quantitative-measurement-of-muscle-atrophy-and-fat-infiltration-of-the-supraspinatus-muscle-using-ultrasonography-after-arthroscopic-rotator-cuff-repair
#3
Yong Ki Kim, Eun Seok Choi, Keon Tae Kim, Jung Ro Yoon, Sang Han Chae
Objective: To investigate the utility of ultrasonography to objectively examine morphological changes (i.e., muscle atrophy and fatty infiltration) of the supraspinatus muscle. Methods: Thirty-four patients were prospectively enrolled in this study. The degrees of muscle atrophy and fat infiltration were measured using ultrasonography 3-4 months after arthroscopic supraspinatus tendon repair. Shoulder function (i.e., shoulder active range of motion, visual analogue scale, and constant score) was examined...
April 2018: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/29757693/a-rotator-cuff-tear-concomitant-with-shoulder-stiffness-is-associated-with-a-lower-retear-rate-after-1-stage-arthroscopic-surgery
#4
In-Bo Kim, Dong-Wook Jung
BACKGROUND: Few studies have reported on the radiological characteristics and repair integrity of coexistent rotator cuff tears (RCTs) and shoulder stiffness after simultaneous arthroscopic rotator cuff repair and capsular release. PURPOSE: To evaluate the radiological characteristics and repair integrity of 1-stage arthroscopic surgery of RCTs concomitant with shoulder stiffness. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Among patients who underwent arthroscopic repair of full-thickness RCTs, the stiff group underwent simultaneous capsular release for shoulder stiffness, and the nonstiff group had no stiffness...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29754845/do-magnetic-resonance-imaging-and-computed-tomography-provide-equivalent-measures-of-rotator-cuff-muscle-size-in-glenohumeral-osteoarthritis
#5
Peter N Chalmers, Lindsay Beck, Irene Stertz, Alexander Aleem, Jay D Keener, Heath B Henninger, Robert Z Tashjian
BACKGROUND: Rotator cuff muscle volume is associated with outcomes after cuff repair and total shoulder arthroplasty. Muscle area on select magnetic resonance imaging (MRI) slices has been shown to be a surrogate for muscle volume. The purpose of this study was to determine whether computed tomography (CT) provides an equivalent measurement of cuff muscle area to a previously validated MRI measurement. METHODS: We included 30 patients before they were undergoing total shoulder arthroplasty with both preoperative CT and MRI scans performed within 30 days of one another at 1 institution using a consistent protocol...
May 10, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29750541/fatty-infiltration-is-a-prognostic-marker-of-muscle-function-after-rotator-cuff-tear
#6
Ana P Valencia, Jim K Lai, Shama R Iyer, Katherine L Mistretta, Espen E Spangenburg, Derik L Davis, Richard M Lovering, Mohit N Gilotra
BACKGROUND: Massive rotator cuff tears (RCTs) begin as primary tendon injuries and cause a myriad of changes in the muscle, including atrophy, fatty infiltration (FI), and fibrosis. However, it is unclear which changes are most closely associated with muscle function. PURPOSE: To determine if FI of the supraspinatus muscle after acute RCT relates to short-term changes in muscle function. STUDY DESIGN: Controlled laboratory study. METHODS: Unilateral RCTs were induced in female rabbits via tenotomy of the supraspinatus and infraspinatus...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29746144/effects-of-allogenic-dermal-fibroblasts-on-rotator-cuff-healing-in-a-rabbit-model-of-chronic-tear
#7
Jieun Kwon, Yun Hee Kim, Sung-Min Rhee, Tae In Kim, Jimin Lee, Saewha Jeon, Joo Han Oh
BACKGROUND: The failure of rotator cuffs to heal after repair is an unresolved surgical issue. There have been substantial efforts, including the use of biological supplements, to enhance tendon healing. Dermal fibroblasts are a good candidate for tendon tissue engineering because they are similar to the tenocytes used for collagen synthesis. In addition, they are easily accessible because autologous dermal fibroblasts can be obtained from individual skin without major skin defects and allogenic dermal fibroblasts (ADFs) have already been commercialized in the field of skin engineering...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29741391/relationship-between-deltoid-and-rotator-cuff-muscles-during-dynamic-shoulder-abduction-a-biomechanical-study-of-rotator-cuff-tear-progression
#8
Felix Dyrna, Neil S Kumar, Elifho Obopilwe, Bastian Scheiderer, Brendan Comer, Michael Nowak, Anthony A Romeo, Augustus D Mazzocca, Knut Beitzel
BACKGROUND: Previous biomechanical studies regarding deltoid function during glenohumeral abduction have primarily used static testing protocols. HYPOTHESES: (1) Deltoid forces required for scapular plane abduction increase as simulated rotator cuff tears become larger, and (2) maximal abduction decreases despite increased deltoid forces. STUDY DESIGN: Controlled laboratory study. METHODS: Twelve fresh-frozen cadaveric shoulders with a mean age of 67 years (range, 64-74 years) were used...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29728740/arthroscopic-rotator-cuff-surgery-following-shoulder-trauma-improves-outcome-despite-additional-pathologies-and-slow-recovery
#9
Barak Haviv, Tal Frenkel Rutenberg, Shlomo Bronak, Mustafa Yassin
PURPOSE: To compare the outcome, recovery and surgical findings after shoulder arthroscopy of clinically defined traumatic and non-traumatic rotator cuff pathology in middle-aged patients. METHODS: Of the patients who underwent rotator cuff surgery, 37 patients who reported a preceding shoulder injury related to their shoulder symptoms (traumatic group) were compared to a control group of 58 patients without a preceding injury (non-traumatic group), matched by age, body mass index and comorbidities...
May 4, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29723798/maximal-voluntary-isometric-contraction-tests-for-normalizing-electromyographic-data-from-different-regions-of-supraspinatus-and-infraspinatus-muscles-identifying-reliable-combinations
#10
Talia Alenabi, Rachel Whittaker, Soo Y Kim, Clark R Dickerson
This study aimed to identify optimal sets of maximal voluntary isometric contractions (MVICs) for normalizing EMG data from anterior and posterior regions of the supraspinatus, and superior, middle and inferior regions of the infraspinatus. 31 right-handed young healthy individuals (15 males, 16 females) participated. EMG activity was obtained from two regions of supraspinatus and three regions of infraspinatus muscles via fine wire electrodes. Participants performed 15 MVIC tests against manual resistance...
April 25, 2018: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29723034/large-critical-shoulder-angle-has-higher-risk-of-tendon-retear-after-arthroscopic-rotator-cuff-repair
#11
Hong Li, Yuzhou Chen, Jiwu Chen, Yinghui Hua, Shiyi Chen
BACKGROUND: The critical shoulder angle (CSA) is the angle created between the superior and inferior bone margins of the glenoid and the most lateral border of the acromion. A few studies recently investigated the relation between CSA and functional outcomes after rotator cuff repair. However, there is a lack of research investigating the effect of CSA on postoperative tendon integrity after rotator cuff repair. PURPOSE: To assess the effects of the CSA on postoperative tendon integrity after rotator cuff repair...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29709414/contractile-property-measurement-of-the-torn-supraspinatus-muscle-using-real-time-tissue-elastography
#12
Takuma Yuri, Nariyuki Mura, Issei Yuki, Hiromi Fujii, Yoshiro Kiyoshige
HYPOTHESIS: In the restoration of shoulder abduction, decreased contractility of the torn rotator cuff muscle may be a cause of a poor result. The aim of this study was to investigate the relationship between the contractile property of the torn supraspinatus muscle measured by real-time tissue elastography and the Goutallier stage as modified by Fuchs et al. METHODS: The muscular hardness of the torn supraspinatus muscle was measured in 32 patients at rest and during isometric contraction with the shoulder abducted to 60° in the scapular plane...
April 27, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29703680/the-greater-tuberosity-angle-a-new-predictor-for-rotator-cuff-tear
#13
Gregory Cunningham, Emilie Nicodème-Paulin, Margaret M Smith, Nicolas Holzer, Benjamin Cass, Allan A Young
BACKGROUND: The implication of scapular morphology in rotator cuff tears has been extensively studied. However, the role of the greater tuberosity (GT) should be of equal importance. The aim of this study was to propose a new radiographic marker, the GT angle (GTA), which measures the position of the GT in relation to the center of rotation of the humeral head. The hypothesis was that a higher angle value would be associated with a higher likelihood in detecting a rotator cuff tear. METHODS: During 1 year, patients were prospectively recruited from a single institution specialized shoulder clinic in 2 different groups...
April 24, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29698293/can-shoulder-muscle-activity-be-evaluated-with-ultrasound-shear-wave-elastography
#14
Kwanwoo Kim, Hyun-Jung Hwang, Seul-Gi Kim, Jin-Hyuck Lee, Woong Kyo Jeong
BACKGROUND: Quantitative assessment of rotator cuff muscle activity is important in the treatment of shoulder disorders. However, the known methods for assessing rotator cuff muscle activity thus far have been inaccurate, invasive, and inconvenient. QUESTIONS/PURPOSES: (1) Does the activity of the deltoid, supraspinatus, and infraspinatus muscles measured using ultrasound shear wave elastography have a linear correlation with muscle activity assessed using generally used methods, including isokinetic dynamometry and electromyography? (2) Does the activity of the deltoid, supraspinatus, and infraspinatus muscles measured using shear wave elastography show good intraobserver and interobserver reliability? METHODS: Twelve volunteers participated in intrasession reliability experiments...
April 24, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29685838/shear-wave-elastography-can-predict-passive-stiffness-of-supraspinatus-musculotendinous-unit-during-arthroscopic-rotator-cuff-repair-for-presurgical-planning
#15
Yoshiaki Itoigawa, Yuichiro Maruyama, Takayuki Kawasaki, Tomoki Wada, Keiichi Yoshida, Kai-Nan An, Kazuo Kaneko
PURPOSE: To determine the feasibility of shear wave elastography (SWE) with B-mode ultrasound in predicting the stiffness of the rotator cuff muscle before arthroscopic rotator cuff repair to evaluate the difficulty of the surgical procedure, as well as to compare SWE with the Goutallier stage on magnetic resonance imaging (MRI). METHODS: Thirty-eight patients with a full-thickness supraspinatus tear requiring arthroscopic rotator cuff repair participated. The Goutallier stage of fatty infiltration on MRI was measured before surgery, as was the SWE modulus of the anterior superficial, anterior deep, posterior superficial, and posterior deep (PD) regions of the supraspinatus muscle...
April 20, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29683224/evaluating-the-role-of-subacromial-impingement-in-rotator-cuff-tendinopathy-development-and-analysis-of-a-novel-murine-model
#16
Guang-Ting Cong, Amir H Lebaschi, Christopher L Camp, Camila B Carballo, Yusuke Nakagawa, Susumu Wada, Xiang-Hua Deng, Scott A Rodeo
Subacromial impingement of the rotator cuff is understood as a contributing factor in the development of rotator cuff tendinopathy. However, changes that occur in the impinged tendon are poorly understood and warrant further study. To enable further study of rotator cuff tendinopathy, we performed a controlled laboratory study to determine feasibility and baseline characteristics of a new murine model for subacromial impingement. This model involves surgically inserting a microvascular clip into the subacromial space in adult C57Bl/6 mice...
April 23, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29681126/structural-and-molecular-study-of-the-supraspinatus-muscle-of-modern-humans-homo-sapiens-and-common-chimpanzees-pan-troglodytes
#17
J M Potau, A Casado, M de Diego, N Ciurana, J Arias-Martorell, G Bello-Hellegouarch, M Barbosa, F J de Paz, J F Pastor, A Pérez-Pérez
OBJECTIVES: To analyze the muscle architecture and the expression pattern of the myosin heavy chain (MyHC) isoforms in the supraspinatus of Pan troglodytes and Homo sapiens in order to identify differences related to their different types of locomotion. MATERIALS AND METHODS: We have analyzed nine supraspinatus muscles of Pan troglodytes and ten of Homo sapiens. For each sample, we have recorded the muscle fascicle length (MFL), the pennation angle, and the physiological cross-sectional area (PCSA)...
April 21, 2018: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29679207/the-swimmer-s-shoulder-multi-directional-instability
#18
REVIEW
Ivan De Martino, Scott A Rodeo
PURPOSE OF REVIEW: Swimmer's shoulder is the term used to describe the problem of shoulder pain in swimmers. Originally described as supraspinatus tendon impingement under the coracoacromial arch, it is now understood that several different pathologies can cause shoulder pain in competitive swimmers, including subacromial impingement syndrome, overuse and subsequent muscle fatigue, scapular dyskinesis, and laxity and instability. RECENT FINDINGS: Swimmers may develop increased shoulder laxity over time due to repetitive use...
April 20, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29664803/posterior-shoulder-dislocation-associated-with-the-head-splitting-and-humeral-neck-fracture-impact-of-understanding-radiologic-signs-and-experience-with-an-extended-deltopectoral-approach
#19
Kemal Gokkus, Ergin Sagtas, Hasan Kara, Ahmet T Aydin
In this paper, our main objective was to emphasize the competency of extended deltopectoral exposure, enforced with the supraspinatus and subscapularis detachment, to gain access to the entire head. The second important point in this paper was to underline the importance of the knowledge that is necessary for interpreting classic radiologic signs of posterior fracture-dislocation of the shoulder. A 47-year-old woman fell down directly onto her shoulder while she was skiing. She was diagnosed with posterior shoulder dislocation, associated with fracture of the head (head splitting) and humeral neck fracture, with the aid of plain radiographs and computed tomographic results...
April 11, 2018: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/29659428/rotator-cuff-tear-morphologic-parameters-at-magnetic-resonance-imaging-relationship-with-muscle-atrophy-and-fatty-infiltration-and-patient-reported-function-and-health-related-quality-of-life
#20
Nathalie J Bureau, Maguy Deslauriers, Marianne Lepage-Saucier, Dominique M Rouleau, André Roy, Patrice Tétreault, Nicola Hagemeister
OBJECTIVE: The aim of this study was to determine the relationship between rotator cuff tear (RCT) morphologic parameters and muscle atrophy and fatty infiltration, and patient-reported outcome measures, in patients with symptomatic full-thickness RCT. METHODS: Rotator cuff tear location, length, width, thickness, and musculotendinous junction position were assessed in 57 magnetic resonance imaging scans and correlated to the outcome measures using multivariate regression analysis...
April 13, 2018: Journal of Computer Assisted Tomography
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