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https://www.readbyqxmd.com/read/29898601/gas-phase-photoluminescence-and-photodissociation-of-silver-capped-hexagold-clusters
#1
Jean-Francois Greisch, Ana Ballester-Caudet, Sebastian Volker Kruppa, Zhen Lei, Quan-Ming Wang, Christoph Riehn, Francoise Remacle
We report on the radiative and non-radiative deactivation pathways of selected charge states of the stoichiometric hexagold phosphine-stabilized ionic clusters, [(C)(AuDppy)6 Ag2 ⋅ (BF4 )x ](4-x)+ with x=2 and 3 (Dppy = diphenylphosphino-2-pyridine), combining gas-phase photoluminescence and photodissociation with quantum chemical computations. These clusters possess an identical isostructural core made of a hyper-coordinated carbon at their center octahedrally surrounded by six gold ions, and two silver ions at their apexes...
June 14, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29889776/activity-of-shoulder-stabilizers-and-prime-movers-during-an-unstable-overhead-press
#2
Martin R Williams, Dustin S Hendricks, Michael J Dannen, Andrea M Arnold, Michael A Lawrence
Williams, MR Jr, Hendricks, DS, Dannen, MJ, Arnold, AM, and Lawrence, MA. Activity of shoulder stabilizers and prime movers during an unstable overhead press. J Strength Cond Res XX(X): 000-000, 2018-Overhead reaching is a common movement that relies heavily on muscles for dynamic stability. Stabilizer muscle activation increased during squatting and bench pressing with an unstable load, but the overhead press (OHP) has yet to be examined. The purpose of this study is to compare muscle activity of the shoulder stabilizers and prime movers and excursions of the center of pressure (CoP) during the OHP in 2 unstable and one stable conditions...
June 8, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29885723/effects-of-standing-on-typing-task-performance-and-upper-limb-discomfort-vascular-and-muscular-indicators
#3
Larissa M Fedorowich, Julie N Côté
Standing is a popular alternative to traditionally seated computer work. However, no studies have described how standing impacts both upper body muscular and vascular outcomes during a computer typing task. Twenty healthy adults completed two 90-min simulated work sessions, seated or standing. Upper limb discomfort, electromyography (EMG) from eight upper body muscles, typing performance and neck/shoulder and forearm blood flow were collected. Results showed significantly less upper body discomfort and higher typing speed during standing...
October 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29881209/fixation-methods-and-implants-in-shoulder-stabilization-a-historical-perspective
#4
Jonathan D Kramer, Sean Robinson, Eric Hohn, Connor Purviance, Eugene M Wolf
Background: Treatment for shoulder instability has changed significantly over the past decade from open procedures to arthroscopic procedures using a variety of different fixation methods and implants. The development of these implants has been highly influenced by the numerous complications that have arisen using early designs. Methods: A review of the literature was performed to describe the history of shoulder stabilization. Conclusion: As biomedical technology improves, we should continue to see changes to implant design and manufacturing...
June 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29881192/surgical-technique-and-clinical-outcome-of-arthroscopic-shoulder-stabilization-via-suture-anchors-using-the-lasso-loop-stitch
#5
Christian Konrads, Sebastian Jovic, Kilian Rueckl, Annabel Fenwick, Thomas Barthel, Maximilian Rudert, Piet Plumhoff
During arthroscopic Bankart-repair the lasso-loop-stitch can be used. The clinical outcome of this technical modification to a broadly used procedure is not known. We followed-up 24 patients treated with this technique over 30 months. We found an excellent clinical outcome in 96% of all cases. The average Rowe-score was 96.3 points. The mean QuickDash was 2.8 points. Using the lasso-loop-stitch in arthroscopic Bankart-repair is safe and results in very good clinical outcomes. It might lead to an accentuated labral bump and enables secure knot-tying with knot-positioning away from the articular cartilage while avoiding the suture cutting through the tissue...
June 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29881163/recurrent-shoulder-stabilization-with-open-bankart-repair-and-long-head-biceps-transfer
#6
Steven F DeFroda, Joseph A Gil, Brett D Owens
There are several treatment options for recurrent shoulder instability. The Latarjet addresses bone loss via coracoid transfer, and creates a "sling effect" on the humeral head with the conjoint tendon. It does however carry a high potential risk of complications including graft resorption, hardware failure, and neurologic injury. It is hypothesized that the long head of the biceps can function similarly, without the donor site morbidity of a coracoid transfer. We present a case of recurrent instability and musculocutaneous nerve palsy following primary arthroscopic stabilization three years prior, and treatment via long head of the biceps stabilization...
June 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29876495/biplanar-fixation-of-acromio-clavicular-joint-dislocation-associated-with-coracoid-process-fracture-case-report
#7
Radwan G Metwaly, Kareem Edres
Introduction: Acromioclavicular (AC) joint injury associated with coracoid process (CP) fracture is a rare injury and only case reports had been published in the literature. Although AC joint injury is not uncommon, there is controversy as regard the best stabilization method whether to use wires, hook plate, arthroscopic reconstruction or the recently described techniques of anatomic restoration of both the coracoclavicular (CC) and acromioclavicular (AC) ligaments to add stability in both the vertical as well as the horizontal plane for the AC joint...
June 2018: Trauma Case Reports
https://www.readbyqxmd.com/read/29876242/arthroscopic-load-shift-technique-for-intraoperative-assessment-of-shoulder-translation
#8
Steven F DeFroda, Brett D Owens
Shoulder instability represents a spectrum of disease, ranging from subluxation to dislocation. It may present acutely after trauma or chronically as a result of multiple events. Physical examination is a key component in evaluating the degree of instability and laxity present; however, in-office guarding or apprehension may limit the examination. In addition, patient anatomy or operator technique may limit the accuracy and reproducibility of examination maneuvers such as the load-shift test. We propose an arthroscopic modification to the load-shift technique involving direct visualization to assess the direction and degree of shoulder instability...
March 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29868426/anterior-shoulder-stabilization-using-a-single-portal-technique-with-suture-lasso
#9
Nicholas Elena, Brittany M Woodall, Sohyun Ahn, Patrick J McGahan, Neil P Pathare, Edward C Shin, James L Chen
Open Bankart repair was the standard technique used in the past, but the request for less invasiveness, always pursued by every surgeon, pushed the development of the arthroscopic procedure. Nowadays the stabilization of the anteroinferior labrum is usually performed with an arthroscopic technique that uses the classic posterior portal and 2 anterior working portals. Because arthroscopy is progressing steadily under every aspect, there is now the chance to use only one working portal with the aid of a suture passer...
May 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29868408/the-arthroscopic-bankart-plus-procedure-for-treatment-of-anterior-shoulder-instability-with-small-to-intermediate-glenoid-defects
#10
Philipp Moroder, Elisabeth Böhm, Markus Scheibel
To date, specific surgical procedures are available for the treatment of anterior shoulder instability with substantial bony glenoid defects, as well as for patients without osseous lesions. However, specific treatment options are lacking for the frequently observed small to intermediate glenoid defects, which may not necessitate glenoid reconstruction surgery according to current guidelines but can still jeopardize the outcome after mere soft-tissue stabilization procedures. This article describes the so-called arthroscopic Bankart-Plus procedure for the treatment of anterior shoulder instability with small to intermediate bony glenoid defects...
April 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29862094/splenic-trauma-during-colonoscopy-the-role-of-intra-abdominal-adhesions
#11
Chukwunonso Chime, Charbel Ishak, Kishore Kumar, Venkata Kella, Sridhar Chilimuri
Splenic rupture following colonoscopy is rare, first reported in 1974, with incidence of 1-21/100,000. It is critical to anticipate splenic trauma during colonoscopy as one of the causes of abdominal pain after colonoscopy especially when located in the left upper quadrant or left shoulder. Postoperative adhesions is a predisposing factor for splenic injury, and management is either operative or nonoperative, based on hemodynamic stability and/or extravasation which can be seen on contrast-enhanced CT scan of the abdomen...
2018: Case Reports in Gastrointestinal Medicine
https://www.readbyqxmd.com/read/29851867/what-are-the-effects-of-capsular-plication-on-translational-laxity-of-the-glenohumeral-joint-a-study-in-cadaveric-shoulders
#12
Stephanie W Mayer, Andrew P Kraszewski, Anne Skelton, Andreas Kontaxis, Russell Warren
BACKGROUND: Surgical treatment for shoulder instability generally involves labral repair with a capsular plication or imbrication. Good results are reported in both open and arthroscopic procedures, but there is no consensus on the amount or location of capsular plication that is needed to achieve stability and anatomic anterior, posterior, and inferior translation of the joint. QUESTIONS/PURPOSES: (1) What are the separate and combined effects of increasing plication magnitude and sequential additive plications in the anterior, posterior, and inferior locations of the joint capsule on glenohumeral joint translation in the anterior, posterior, and inferior directions? (2) What plication location and magnitude restores anterior, posterior, and inferior translation to a baseline level? METHODS: Fourteen cadaveric shoulders were dissected down to the glenohumeral capsule and underwent instrumented biomechanical testing...
May 30, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29845835/effects-of-4-week-self-cross-body-stretching-with-scapular-stabilization-on-shoulder-motions-and-horizontal-adductor-strength-in-subjects-with-limited-shoulder-horizontal-adduction
#13
Ha-Na Joung, Chung-Hwi Yi, Hye-Seon Jeon, Ui-Jae Hwang, Oh-Yun Kwon
BACKGROUND: Posterior shoulder tightness (PST) is related to shoulder conditions such as shoulder impingement and limited shoulder horizontal adduction (SHA). The purpose of this study was to compare the effects of self cross body stretching (CBS) with and without scapular stabilization (SS) on SHA and shoulder internal rotation (SIR) range of motion (ROM) and shoulder horizontal adductor strength (SHAS) in subjects with limited SHA. METHODS: Twenty-six subjects (14 males, 12 females) with limited SHA was participated in this study...
May 29, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29804952/clinical-outcomes-and-recurrence-rates-after-arthroscopic-stabilization-procedures-in-young-patients-with-a-glenoid-bone-erosion-a-comparative-study-between-glenoid-erosion-more-and-less-than-20
#14
In Park, Chan-Jae Park, Jae-Hoo Lee, Hwan-Sub Hyun, Jin-Young Park, Sang-Jin Shin
PURPOSE: To evaluate the clinical outcomes and recurrence rates of arthroscopic stabilization procedures in young patients who had recurrent anterior shoulder instability with a glenoid bone erosion more than 20%, and to compare with those in patients with a glenoid bone erosion less than 20%. METHODS: A total of 161 patients who underwent an arthroscopic stabilization procedure for recurrent anterior shoulder instability with anterior glenoid bone erosions and at least 2 years of follow-up were included...
May 24, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29791191/effects-of-bone-incorporation-after-arthroscopic-stabilization-surgery-for-bony-bankart-lesion-based-on-preoperative-glenoid-defect-size
#15
In Park, Jae-Hoo Lee, Hwan-Sub Hyun, Min-Joon Oh, Sang-Jin Shin
BACKGROUND: Recurrent shoulder instability occurs more frequently after soft tissue surgery when the glenoid defect is greater than 20%. However, for lesions less than 20%, no scientific guidance is available regarding what size of bone fragments may affect shoulder functional restoration after bone incorporation. Purpose/Hypothesis: The purpose was to analyze how preoperative glenoid defect size and bone fragment incorporation alter postoperative clinical outcomes, we compared the functional outcomes of shoulders with and without bony Bankart lesion...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29780821/a-role-for-postoperative-negative-pressure-wound-therapy-in-multitissue-hand-injuries
#16
Hyung Sup Shim, Ji Seon Choi, Sang Wha Kim
In this study, we compared outcomes in patients with acute hand injury, who were managed with or without negative pressure wound therapy (NPWT) after reconstructive surgery. All of the patients who sustained acute and multitissue injuries of the hand were identified. After reconstructive surgery, a conventional dressing was applied in Group 1 and NPWT was applied in Group 2. The dressing and NPWT were changed every 3 days. The mean age and Hand Injury Severity Scoring System score of both groups were not significantly different...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29772854/-observation-of-early-clinical-effect-of-percutaneous-transforaminal-endoscopic-technology-in-treating-cervical-spondylotic-radiculopathy
#17
Ying-Chun Zhang, Tai-Sheng Chen, Hua Zhu
OBJECTIVE: To explore the early clinical effect and safety of percutaneous transforaminal endoscopic technology for cervical spondylotic radiculopathy. METHODS: From August 2016 to September 2017, 14 patients with cervical spondylotic radiculopathy who responded poorly to non-surgical treatment for at least 6 weeks underwent percutaneous transforaminal endoscopic discectomy via posterior approach. There were 6 males and 8 females, aging from 32 to 68 years old with an average of (40...
April 25, 2018: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29769141/single-coracoclavicular-suture-fixation-with-mersilene-tape-versus-hook-plate-in-the-treatment-of-acute-type-v-acromioclavicular-dislocation-a-retrospective-analysis
#18
Ying-Cheng Huang, Shan-Wei Yang, Chun-Yu Chen, Kai-Cheng Lin, Jenn-Huei Renn
BACKGROUND: Here, we compared the clinical and radiographic outcomes between coracoclavicular (CC) fixation with Mersilene tape and hook plate for acute unstable acromioclavicular (AC) joint dislocation treatment. METHODS: We enrolled 49 patients with unstable acute AC dislocation who, between January 2010 and January 2014, underwent surgery with single CC suture fixation with Mersilene tape (M group, 25 cases) or clavicle hook plate (H group, 24 cases). In M and H groups, the average age was 43...
May 16, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29768337/variation-in-origin-of-the-long-head-of-the-biceps-brachii-tendon-in-a-cadaver-a-case-report
#19
Shuji Katsuki, Hayato Terayama, Ryuta Tanaka, Ning Qu, Osamu Tanaka, Kanae Umemoto, Kaori Suyama, Kou Sakabe
INTRODUCTION: In general, the long head of the biceps brachii (LHB) tendon arises from the supraglenoid tubercle in the shoulder joint, and it has an important stabilizing mechanism for the humeral head in the shoulder joint. This case demonstrates that even if the LHB tendon can be palpated outside of the shoulder joint, it may disappear in the intertubercular sulcus (IS) and in the glenohumeral (GH) joint because of abnormal articulation. PATIENT CONCERNS: This case involved the cadaver of an 82-year-old Japanese man (number 1936, cause of death: hepatocellular tumor), who was selected from the bodies used for gross anatomy practice at the Tokai University School of Medicine in 2017...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29752508/comparison-of-shoulder-replacement-to-treat-osteoarthritis-secondary-to-instability-surgery-and-primary-osteoarthritis-a-retrospective-controlled-study-of-patient-outcomes
#20
Giovanni Merolla, Simone Cerciello, Stefano Marenco, Elisabetta Fabbri, Paolo Paladini, Giuseppe Porcellini
PURPOSE: We hypothesized that osteoarthritis developing after instability surgery is radiographically similar to primary arthritis and that arthroplasty provides comparable outcomes in patients with these two types of osteoarthritis. METHODS: Patients with osteoarthritis due to instability surgery (group I) and with primary osteoarthritis (group II) were included. Mean follow-up was 52.6 and 41.6 months, respectively. Hemiarthroplasties (HA) were 32% in group I and 27% in group II; total shoulder arthroplasties (TSA) were 68 and 73% respectively...
May 12, 2018: International Orthopaedics
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