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https://www.readbyqxmd.com/read/28943236/force-direction-and-arm-position-affect-contribution-of-clavicular-and-sternal-parts-of-pectoralis-major-muscle-during-muscle-strength-testing
#1
Hsin-Min Lee
STUDY DESIGN: Cross-sectional study. PURPOSE OF THE STUDY: The study aims to determine the effects of force direction and arm position in differentiating the clavicular (PMc) and sternal (PMs) parts of the pectoralis major (PM) muscle during maximal voluntary isometric contraction (MVIC) to provide basic evidence to support the clinical thinking behind muscle strength testing of PM. METHODS: Nine experimental conditions with 3 force directions of horizontal adduction (+30° oblique, horizontal, and -30° oblique to the transverse plane) and 3 arm rotation positions (0°, 45°, and 90° shoulder external rotation from the transverse plane) were randomly tested for 26 healthy male participants...
September 21, 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/28942510/limited-diagnostic-accuracy-of-magnetic-resonance-imaging-and-clinical-tests-for-detecting-partial-thickness-tears-of-the-rotator-cuff
#2
Matthias Brockmeyer, Cornelia Schmitt, Alexander Haupert, Dieter Kohn, Olaf Lorbach
INTRODUCTION: The reliable diagnosis of partial-thickness tears of the rotator cuff is still elusive in clinical practise. Therefore, the purpose of the study was to determine the diagnostic accuracy of MR imaging and clinical tests for detecting partial-thickness tears of the rotator cuff as well as the combination of these parameters. MATERIALS AND METHODS: 334 consecutive shoulder arthroscopies for rotator cuff pathologies performed during the time period between 2010 and 2012 were analyzed retrospectively for the findings of common clinical signs for rotator cuff lesions and preoperative MR imaging...
September 23, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28939274/functional-and-sports-specific-outcome-after-surgical-repair-of-rotator-cuff-tears-in-rock-climbers
#3
Michael Simon, Dominik Popp, Christoph Lutter, Volker Schöffl
OBJECTIVE: The purpose of this study was to analyze the general (Constant Murley score) and sports-specific (change in International Climbing and Mountaineering Federation [UIAA] grade) outcome after surgical repair of rotator cuff injuries in rock climbers. METHODS: In a retrospective study, 12 rock climbers (10 men, 2 women; age 55 years; SD±9; range 28-66 years [mean±SD with range] with rotator cuff lesions were re-evaluated 27±16 (12-72) months after arthroscopic surgical repair of the rotator cuff of the shoulder...
September 19, 2017: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/28937577/trajectories-of-musculoskeletal-pain-from-adolescence-to-middle-age-the-role-of-early-depressive-symptoms-a-27-year-follow-up-of-the-northern-swedish-cohort
#4
Päivi Leino-Arjas, Kristiina Rajaleid, Gashaw Mekuria, Tapio Nummi, Pekka Virtanen, Anne Hammarström
Depression and musculoskeletal pain are associated, but long-term follow-up studies are rare. We aimed to examine the relationship of early depressive symptoms with developmental patterns of musculoskeletal pain from adolescence to middle age. Adolescents ending compulsory school (age 16) in Luleå, Northern Sweden, in 1981 (n = 1083) were studied and followed up in 1986, 1995, and 2008 (age 43) for musculoskeletal pain. Attrition was very low. Indicators for any and severe pain were based on pain in the neck-shoulders, low back, and the extremities...
September 19, 2017: Pain
https://www.readbyqxmd.com/read/28937490/the-relationship-between-body-mass-index-and-fatty-infiltration-in-the-shoulder-musculature
#5
David F Dow, Kaushal Mehta, Yuanfang Xu, Eric England
OBJECTIVE: Fatty infiltration in the rotator cuff muscles has been well studied in the setting of rotator cuff tendon tears to help predict outcomes of surgical repair. Fatty infiltration in the rotator cuff has also been independently correlated to the variables of age and sex. The purpose of our study was to determine if there is a relationship between body mass index and fatty infiltration in patients with no imaging evidence of rotator cuff tendinosis or tear. METHODS: Radiology reports of all magnetic resonance imaging examinations of the shoulder were searched over a 2-year period...
September 20, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28937426/seborrheic-keratosis-with-prominent-clear-cell-changes-a-rare-but-important-diagnostic-variant
#6
Thomas H Long, David Zlotnick, Stanley L Hurst, Zsolt Argenyi
Seborrheic keratoses, although exceedingly common, occasionally have morphologic similarities to other lesions that complicate a typically straightforward diagnosis. The authors present a case of a 69-year-old man with a left shoulder lesion that displayed characteristic clinical and microscopic features of seborrheic keratosis on biopsy. However, diffuse and prominent clear cells were also noted. These stained strongly with Periodic acid-Schiff and were diastase sensitive, suggestive of glycogen accumulation and possible trichilemmal differentiation...
September 12, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28933238/staged-decrease-of-physical-ability-on-the-locomotive-syndrome-risk-test-is-related-to-neuropathic-pain-nociceptive-pain-shoulder-complaints-and-quality-of-life-in-middle-aged-and-elderly-people-the-utility-of-the-locomotive-syndrome-risk-test
#7
Shiro Imagama, Yukiharu Hasegawa, Kei Ando, Kazuyoshi Kobayashi, Tetsuro Hida, Kenyu Ito, Mikito Tsushima, Yoshihiro Nishida, Naoki Ishiguro
OBJECTIVES: A locomotive syndrome (LS) risk test for evaluation of physical ability is recently proposed. The objective of this study is to evaluate the utility of this test by examining physical ability, neuropathic pain, nociceptive pain, shoulder complaints, and quality of life (QOL). METHODS: A prospective cohort study was conducted in 523 subjects (240 males, 283 females; mean age: 63.3 years) at a health checkup. Data collected using visual analog scales (VAS) for shoulder pain, low back pain, sciatica, and knee pain, neuropathic pain, shoulder complaint, body mass index (BMI), osteoporosis, and SF-36 were compared among three LS risk stages...
February 16, 2017: Modern Rheumatology
https://www.readbyqxmd.com/read/28932190/empirical-evaluation-of-voluntarily-activatable-muscle-synergies
#8
Shunta Togo, Hiroshi Imamizu
The muscle synergy hypothesis assumes that individual muscle synergies are independent of each other and voluntarily controllable. However, this assumption has not been empirically tested. This study tested if human subjects can voluntarily activate individual muscle synergies extracted by non-negative matrix factorization (NMF), the standard mathematical method for synergy extraction. We defined the activation of a single muscle synergy as the generation of a muscle activity pattern vector parallel to the single muscle synergy vector...
2017: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/28929926/three-dimensional-kinematic-analysis-and-power-output-of-elite-flat-water-kayakers
#9
Anna Bjerkefors, Olga Tarassova, Johanna S Rosén, Pascal Zakaria, Anton Arndt
The purpose was to examine power output and three-dimensional (3D) kinematic variables in the upper limbs, lower limbs and trunk in elite flat-water kayakers during kayak ergometer paddling. An additional purpose was to analyse possible changes in kinematics with increased intensity and differences between body sides. Six male and four female international level flat-water kayakers participated. Kinematic and kinetic data were collected during three tasks; low (IntL), high (IntH) and maximal (IntM) intensities...
September 20, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28926848/-parsonage-turner-syndrome-case-report
#10
Alexander Katzer, Wolf-Peter Niedermauntel, Jörg Rump
Neuralgic amyotrophy of the shoulder (Parsonage-Turner syndrome) is a rare condition of unknown aetiology which manifests as acute neuropathy of the brachial plexus. Diagnosis is based on typical symptoms and physical examination. In addition, magnetic resonance imaging of the affected shoulder and the cervical spine is advisable, in order to distinguish this syndrome from other conditions with similar symptoms. There is no specific treatment for neuralgic amyotrophy, but in about 50 - 67% of cases complete recovery occurs within two to three years, depending on the severity of the symptoms when they first appear...
September 19, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28921995/the-angel-and-the-devil-on-your-shoulder-friends-mitigate-and-exacerbate-21st-birthday-alcohol-related-consequences
#11
Jennifer Fillo, Lindsey M Rodriguez, Amber M Anthenien, Clayton Neighbors, Christine M Lee
Twenty-first birthdays are associated with heavier drinking and more negative consequences than any other high-risk drinking event. Friends are the strongest social influence on young adult drinking; however, previous research on college students' drinking has often only examined individuals' perceptions of "friends" generally. Unfortunately, this may obscure the positive influence of some friends and the negative influence of others. Using data drawn from a larger intervention study aimed at reducing 21st birthday drinking, this research examined how specific friends (N = 166) who were present at 21st birthday celebrations may have exacerbated or mitigated celebrants' (N = 166) experience of alcohol-related consequences, as well as how characteristics of that friendship moderate these effects...
September 18, 2017: Psychology of Addictive Behaviors: Journal of the Society of Psychologists in Addictive Behaviors
https://www.readbyqxmd.com/read/28920546/blood-supply-and-vascularity-of-the-glenoid-labrum-its-clinical-implications
#12
Abduelmenem Alashkham, Abdulrahman Alraddadi, Paul Felts, Roger Soames
BACKGROUND: Tears of the glenoid labrum are common after dislocation of the glenohumeral joint. The outcome for healing or surgical reconstruction of the glenoid labrum relies on the extent of its vascularization. This study aims to evaluate the glenoid labrum blood supply and to determine its regional vascularity. MATERIALS AND METHODS: A total of 140 shoulders (30 male and 40 female cadavers) were examined: mean age 81.5 years, range 53-101 years. All blood vessels around the glenohumeral joint were dissected and recorded...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28919494/shoulder-injury-in-water-polo-a-systematic-review-of-incidence-and-intrinsic-risk-factors
#13
REVIEW
Andrea H Miller, Kerrie Evans, Roger Adams, Gordon Waddington, Jeremy Witchalls
OBJECTIVES: Water polo is a popular water-based contact sport that involves swimming, throwing and defending. Cumulatively, these repetitive overhead activities are thought to increase the risk of shoulder injury and, subsequently to affect players' physical conditioning as well as team performance. The purpose of this review was to examine available evidence relating to shoulder injury rates and risk factors for shoulder injury in water polo. DESIGN: Systematic review METHODS: CINAHL, AUSPORT, Pubmed, Pedro and SPORTDiscus databases were searched for original research papers using the predefined terms ("water polo") AND (shoulder OR glenohumeral* OR arm OR "upper limb")...
August 31, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28918579/analysis-of-undesirable-sequelae-of-sentinel-node-surgery-in-breast-cancer-patients-a-prospective-cohort-study
#14
Dominika Kozak, Iwona Głowacka-Mrotek, Tomasz Nowikiewicz, Zygmunt Siedlecki, Wojciech Hagner, Magdalena Sowa, Wojciech Zegarski
Use of sentinel lymph node biopsy limits the frequency and severity of sequelae of surgical treatment. However, the procedure itself may not be completely free of complications. The goal of this work was to analyze prospectively the occurrence of undesirable sequelae in patients undergoing sentinel lymph node biopsy as an isolated intervention in the axillary fossa. This prospective observational study was conducted on a group of 104 women. Patients were examined on five occasions: one day before the procedure, one day after the procedure, one month, three months, and six months after the procedure...
September 16, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28916789/whole-body-and-hematopoietic-adam8-deficiency-does-not-influence-advanced-atherosclerotic-lesion-development-despite-its-association-with-human-plaque-progression
#15
Kosta Theodorou, Emiel P C van der Vorst, Marion J Gijbels, Ine M J Wolfs, Mike Jeurissen, Thomas L Theelen, Judith C Sluimer, Erwin Wijnands, Jack P Cleutjens, Yu Li, Yvonne Jansen, Christian Weber, Andreas Ludwig, Jacob F Bentzon, Jörg W Bartsch, Erik A L Biessen, Marjo M P C Donners
Although A Disintegrin And Metalloproteinase 8 (ADAM8) is not crucial for tissue development and homeostasis, it has been implicated in various inflammatory diseases by regulating processes like immune cell recruitment and activation. ADAM8 expression has been associated with human atherosclerosis development and myocardial infarction, however a causal role of ADAM8 in atherosclerosis has not been investigated thus far. In this study, we examined the expression of ADAM8 in early and progressed human atherosclerotic lesions, in which ADAM8 was significantly upregulated in vulnerable lesions...
September 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28915847/absence-of-ultrasound-inflammation-in-patients-presenting-with-arthralgia-rules-out-the-development-of-arthritis
#16
Myrthe van der Ven, M van der Veer-Meerkerk, D F Ten Cate, N Rasappu, M R Kok, D Csakvari, J M W Hazes, A H Gerards, J J Luime
BACKGROUND: To decrease the burden of disease of rheumatoid arthritis (RA), patients at risk for RA need to be identified as early as possible, preferably when no clinically apparent synovitis can be detected. Up to now, it has been fairly difficult to identify those patients with arthralgia who develop inflammatory arthritis (IA), but recent studies using ultrasound (US) suggest that earlier detection is possible. We aimed to identify patients with arthralgia developing IA within 1 year using US to detect subclinical synovitis at first consultation...
September 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28914349/reverse-total-shoulder-arthroplasty-for-type-i-fracture-sequelae-after-internal-fixation-of-proximal-humerus-fractures
#17
Benedikt Schliemann, Christina Theisen, Clemens Kösters, Michael J Raschke, Andre Weimann
INTRODUCTION: Complications after internal fixation of proximal humerus fracture are common and may require surgical revision. Reverse total shoulder arthroplasty (RTSA) is frequently performed in such cases. The aim of the present study was to evaluate the functional results and complications after RTSA for the treatment of type I fracture sequelae after internal fixation of proximal humerus fractures. MATERIALS AND METHODS: 26 patients (18 female, 8 male) underwent surgical revision of type I fracture sequelae of the proximal humerus after locking plate (n = 22) or intramedullary nail (n = 4) fixation...
September 15, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28904847/correlation-between-scapular-asymmetry-and-differences-in-left-and-right-side-activity-of-muscles-adjacent-to-the-scapula
#18
Seong-Gil Kim
OBJECTIVES: The aim of this study was to analyze the correlation between scapular asymmetry in young female adults and differences in left and right side activity of muscles adjacent to the scapula. METHODS: This study included 60 female students from U university in Korea. In order to examine scapular asymmetry, the lateral scapular slide test (LSST) was used. The LSST was performed in 3 different postures (LSST-1, LSST-2, and LSST-3; i.e., 0°, 45°, and 90° of upper limb abduction, respectively)...
August 2017: Osong Public Health and Research Perspectives
https://www.readbyqxmd.com/read/28900673/eye-hand-coordination-during-visuomotor-adaptation-effects-of-hemispace-and-joint-coordination
#19
Miya K Rand, Sebastian Rentsch
We previously examined adaptive changes of eye-hand coordination during learning of a visuomotor rotation. Gazes during reaching movements were initially directed to a feedback cursor in early practice, but were gradually shifted toward the target with more practice, indicating an emerging gaze anchoring behavior. This adaptive pattern reflected a functional change of gaze control from exploring the cursor-hand relation to guiding the hand to the task goal. The present study further examined the effects of hemispace and joint coordination associated with target directions on this behavior...
September 12, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28899384/systematic-review-of-quantitative-imaging-biomarkers-for-neck-and-shoulder-musculoskeletal-disorders
#20
Judith E Gold, David M Hallman, Fredrik Hellström, Martin Björklund, Albert G Crenshaw, Svend Erik Mathiassen, Mary F Barbe, Sayed Ali
BACKGROUND: This study systematically summarizes quantitative imaging biomarker research in non-traumatic neck and shoulder musculoskeletal disorders (MSDs). There were two research questions: 1) Are there quantitative imaging biomarkers associated with the presence of neck and shoulder MSDs?, 2) Are there quantitative imaging biomarkers associated with the severity of neck and shoulder MSDs? METHODS: PubMed and SCOPUS were used for the literature search. One hundred and twenty-five studies met primary inclusion criteria...
September 12, 2017: BMC Musculoskeletal Disorders
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