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https://www.readbyqxmd.com/read/30334740/shear-waves-reveal-viscoelastic-changes-in-skeletal-muscles-after-hemispheric-stroke
#1
Ghulam Rasool, Allison B Wang, William Z Rymer, Sabrina S M Lee
We investigated alterations in material properties such as elasticity and viscoelasticity of stroke-affected muscles using ultrasound induced shear waves and mechanical models. We used acoustic radiation force to generate shear waves along fascicles of biceps muscles and measured their propagation velocity. The shear wave data were collected in muscles of 13 hemiplegic stroke survivors under passive conditions at 90°, 120°, and 150° elbow flexion angles. In a viscoelastic medium, as opposed to a purely elastic medium, the shear wave propagation velocity depends on the frequency content of the induced wave...
October 2018: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/30326526/biceps-tendon-changes-in-youth-softball-pitchers-following-an-acute-bout-of-pitching
#2
Jeff W Barfield, Hillary A Plummer, Adam W Anz, James R Andrews, Gretchen D Oliver
Because pitch counts do not exist for softball, pitchers may throw between 1200 and 1500 pitches over 3-day tournaments. With this workload, a common symptom among softball pitchers is anterior shoulder pain. The purpose of this study was to examine long-head biceps tendon (LHBT) changes in youth softball pitchers following an acute bout of pitching. Nineteen softball pitchers (11.89±1.2 years; 158.23±9.71 cm; 61.59±14.76 kg) participated. Images of the LHBT were obtained prior to and immediately following a simulated game protocol...
October 16, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30310840/inferior-shoulder-dislocation-after-shortening-osteotomy-of-the-humerus-a-case-report
#3
M Ceynowa, M Treder, F Dąbrowski, M Piotrowski, R Pankowski, M Rocławski
We present a case of a post-surgical complete dislocation after excessive proximal humeral shortening osteotomy performed in a patient operated on for atrophic non-union of a proximal humeral fracture. This complication has not been previously reported. The dislocation occurred due to extensive laxity of the soft tissue envelope, predominantly the deltoid muscle, as well as rotator cuff tear. The reconstructive procedurę consisted of vertical duplication of the capsule, reinforcement of the repair with coracoacromial ligament, tenodesis of the long head of the biceps tendon to the conjoined tendon and distal transfer of the deltoid muscle...
October 2018: Trauma Case Reports
https://www.readbyqxmd.com/read/30306456/genes-interconnecting-ampk-and-trem-1-and-associated-micrornas-in-rotator-cuff-tendon-injury
#4
Finosh G Thankam, Chandra S Boosani, Matthew F Dilisio, R Michael Gross, Devendra K Agrawal
Fatty infiltration and inflammation delay the healing responses and raise major concerns in the therapeutic management of rotator cuff tendon injuries (RCTI). Our evaluations showed the upregulation of 'metabolic check point' AMPK and inflammatory molecule, TREM-1 from shoulder biceps tendons collected from RCTI subjects. However, the epigenetic regulation of these biomolecules by miRNAs is largely unknown and it is likely that a deeper understanding of the mechanism of action can have therapeutic potential for RCTI...
October 10, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/30306097/patient-preferences-for-the-treatment-of-shoulder-and-proximal-biceps-disorders-are-associated-with-patient-age-race-sex-and-activity-level
#5
Matthew V Smith, Michelle Gosselin, Karen Steger-May, Matthew J Matava, Rick W Wright, Robert H Brophy
Background: Patient preference information has become increasingly more important in clinical decision making. Purpose: To assess patient preferences when making treatment decisions in the shoulder to determine which features are more important according to patient age, race, activity level, and sex. Study Design: Cross-sectional study; Level of evidence, 3. Methods: Study participants aged ≥18 years were surveyed as to their preferences regarding surgical treatment for shoulder and proximal biceps abnormalities...
October 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/30306058/sonographic-appearance-of-fluid-in-peripheral-joints-and-bursae-of-healthy-asymptomatic-chinese-population
#6
Liyun Wang, Xi Xiang, Yuanjiao Tang, Yujia Yang, Li Qiu
Background: High frequency ultrasound is often used to measure the thickness of fluid in peripheral joints and bursae of healthy asymptomatic populations. Two major steps critical to this procedure are obtaining the detection rates and analyzing the relevant factors. Methods: Healthy Chinese adult volunteers with no history of arthritis, past trauma or surgery and joint pain were enrolled in this study. Ultrasonography was performed on the bilateral shoulders, elbows, wrists, metacarpophalangeal joints (MCP) 1-5, proximal interphalangeal joints (PIP) 1-5, distal interphalangeal joints (DIP) 2-5, suprapatellar knees, ankles, metatarsophalangeal joints (MTP) 1-5, subacromial and subdeltoid bursae, deep infrapatellar bursae, retrocalcaneal bursae and long biceps tendons in B mode...
September 2018: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/30305070/distal-biceps-tendon-rupture-advantages-and-drawbacks-of-the-anatomical-reinsertion-with-a-modified-double-incision-approach
#7
L Tarallo, M Lombardi, F Zambianchi, A Giorgini, F Catani
BACKGROUND: Distal biceps tendon rupture occurs more often in middle-aged male population, involving the dominant arm. In this retrospective study, it's been described the occurrence of the most frequent adverse events and the clinical outcomes of patients undergoing surgical repair of distal biceps tendon rupture with the modified Morrey's double-incision approach, to determine better indications for patients with acute tendon injury. METHODS: Sixty-three patients with acute distal biceps tendon rupture treated with a modified double-incision technique between 2003 and 2015 were retrospectively evaluated at a mean 24 months of follow-up...
October 10, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/30300219/individual-treatment-of-delayed-distal-biceps-tendon-rupture-case-report-and-literature-review
#8
Chenglun Yao, Weidong Weng, Xijie Zhou, Keshav Poonit, Jingquan Yang, Damu Lin, Chao Sun, Hede Yan
INTRODUCTION: Complicated elbow injuries (elbow injuries with bone and soft tissue injury) with distal biceps tendon ruptures (DBTRs) are not uncommon. There are several treatment modalities in different situations of injuries. In this article, we reported 3 successful individual treatments of delayed DBTR with complicated elbow injuries. MATERIALS AND METHODS: Three cases of complicated elbow injuries treated between 2010 and 2016 were reviewed. The delayed DBTR cases were summarized and treated...
October 9, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/30284028/antagonist-muscle-architecture-and-aponeurosis-tendon-strain-of-biceps-femoris-long-head-during-maximal-isometric-efforts
#9
Eleftherios Kellis
INTRODUCTION: Examination of the mechanical behavior of the hamstrings when acting as antagonists provides information about loading of this muscle group and its role for joint stability during forceful quadriceps contractions. The aim of this study was to quantify biceps femoris long head fascicle length (FL), angle of pennation (PA) and distal tendon/aponeurosis strain during maximum voluntary contraction efforts of the knee extensors using real-time ultrasound. METHODS: Fourteen participants performed passive joint movements and maximum voluntary knee extension and flexion efforts of the knee flexors at 0°, 45° and 90° of knee flexion...
October 3, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/30284007/more-tendon-degeneration-in-patients-with-shoulder-osteoarthritis
#10
Ibrahim Mustafa, Kartus Jüri-Toomas, E Steigen Sonja, Olsen Randi, Meknas Khaled
PURPOSE: Tendon disorders are a major problem in the general population. It is known that rotator cuff tendinopathy contributes to osteoarthritis (OA) of the shoulder. The aim of the study was to analyse the presence of tendinopathy in patients with shoulder OA and an intact rotator cuff, using a multimodal approach. METHODS: Thirteen consecutive patients median age 67 (52-84) years, with OA of the shoulder, and 13 consecutive control patients, with a fracture of the proximal humerus, median age 70 (51-84) years, underwent an open biopsy procedure from the biceps and subscapularis tendon in conjunction with shoulder arthroplasty...
October 3, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/30271783/distal-pullout-strengths-of-the-biceps-long-head-tendon-for-different-adjacent-tissue-and-tendon-pathologies-during-rotator-cuff-repair
#11
Young Jun Kim, Ohhyo Kwon, Hwa-Ryeong Lee, Sae Hoon Kim
Purpose. Pathologies of the long head of the biceps tendon (LHBT) are frequently recognized in cases of rotator cuff tear. Recommendations for managing such pathologies remain debatable, and distal migration of tenotomized biceps is always a concern when only tenotomy is performed. Methods. Seventy patients of mean age 60.4 ± 6.9 years (range: 44 to 82 years) were included in this retrospective study. During subpectoral tenodesis in rotator cuff repair, pullout tensions were measured using a digital tensiometer...
2018: BioMed Research International
https://www.readbyqxmd.com/read/30267195/collagen-type-iii-content-of-the-long-head-of-the-biceps-tendon-as-an-indicator-of-glenohumeral-arthritis
#12
Finosh G Thankam, Daugherty K Evan, Devendra K Agrawal, Matthew F Dilisio
Tendonosis is characterized by an increase in collagen type III relative to collagen type I, but the precise ratio of collagen type I to collagen type III in pathologic shoulder tendons has not been reported. A tendon continuously bathed in an OA synovial environment may exhibit histomorphologic differences as compared to those from shoulders with a preserved articular surface. The purpose of this study was to evaluate the biochemical and histological differences in the proximal portion of the long head of the biceps tendon (LHBT) from a non-arthritic versus an arthritic glenohumeral joint...
September 28, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/30258833/reconstruction-of-the-distal-biceps-tendon-using-semitendinosus-grafting-description-of-the-technique
#13
Leandro Masini Ribeiro, Jose Inacio de Almeida Neto, Paulo Santoro Belangero, Alberto de Castro Pochini, Carlos Vicente Andreoli, Benno Ejnisman
Distal ruptures of the biceps are rare when compared to proximal ruptures, with a different epidemiology and mechanism of trauma. There is no exact pathophysiology, though the hypovascular distal insertion and the mechanical impact during movement should be considered important factors. The surgical treatment of chronic cases presents worse prognosis due to muscle shortening with tendon retraction, making anatomical repair of the injury difficult, requiring the use of grafts for its reconstruction. This is a prospective study involving four patients with chronic distal biceps injury...
September 2018: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/30258770/lesser-tuberosity-avulsion-fracture-repair-using-knotless-arthroscopic-fixation
#14
William M Cregar, Ian S MacLean, Nikhil N Verma, Scott W Trenhaile
Although some literature may suggest that acute nondisplaced lesser tuberosity fractures should undergo nonoperative management, there is a body of evidence that supports surgical stabilization of these injuries due to concern for fracture displacement, nonunion and malunion, anteromedial impingement, and possible biceps tendon subluxation or dislocation. In this Technical Note, we introduce a novel technique for arthroscopic fixation of lesser tuberosity avulsion fractures using a knotless repair. In the lateral decubitus position using standard arthroscopic portals, with the addition of the biceps accessory portal, 2 ULTRATAPE sutures are fixed to the avulsed fragment in luggage-tag fashion to create a secure, knotless fixation...
September 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/30257779/-tear-of-the-distal-biceps-brachii-tendon-correlation-of-ultrasound-and-operative-findings-surgical-therapy-results
#15
M Grinac, J Brtková, T Kučera, P Šponer
PURPOSE OF THE STUDY When treating tears of the distal biceps brachii muscle tendon, we repeatedly noticed a difference between the preoperative ultrasound findings and the operative findings. The aim of the study was to retrospectively correlate these findings in order to determine the sensitivity of the ultrasound examination in everyday orthopaedic practice. Moreover, we compared the results and complications of surgical treatment through two operative techniques used at our department. MATERIAL AND METHODS In the 2004-2016 period 20 patients underwent a surgery at our department for total tear of the distal tendon of the biceps brachii muscle...
2018: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/30255288/platelet-rich-plasma-for-elbow-pathologies-a-descriptive-review-of-current-literature
#16
REVIEW
Adam Kwapisz, Sharad Prabhakar, Riccardo Compagnoni, Aleksandra Sibilska, Pietro Randelli
PURPOSE OF REVIEW: Platelet-rich plasma is used in many orthopedic pathologies such as tendinopathies and ligament injuries. The clinical results reported in the scientific literature are, however, confusing. The aim of this manuscript is to provide a narrative literature review regarding the role of PRP in the most common elbow soft tissue pathologies. RECENT FINDINGS: The response to PRP seems to be favorable when compared to steroid injection for pain management and for patient-reported outcomes in lateral epicondylitis...
September 25, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/30253987/management-of-massive-rotator-cuff-tears-prospective-study-in-218-patients
#17
Maxime Cavalier, Stéphane Jullion, Jean Kany, Jean Grimberg, Yves Lefebvre, Didier Oudet, Sophie Grosclaude, Christophe Charousset, Pascal Boileau, Thierry Joudet, Nicolas Bonnevialle
BACKGROUND: No consensus exists about the management of massive and symptomatic rotator cuff tears (RCTs). The objective of this study was to compare the 12-month clinical outcomes of various treatment options for massive RCTs. HYPOTHESIS: Arthroscopic surgery has a role to play in the treatment of massive and apparently irreparable RCTs. MATERIAL AND METHODS: A prospective multicentre non-randomised study was performed in patients with massive RCTs managed non-operatively (NONOP) or by arthroscopic tenotomy/tenodesis of the long head of biceps (aTLB), arthroscopic partial tendon repair (aPTR), arthroscopic latissimus dorsi transfer (aLDT), or reverse shoulder arthroplasty (RSA)...
September 22, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/30253949/bye-bye-biceps-case-report-describing-presentation-physical-examination-diagnostic-workup-and-treatment-of-acute-distal-biceps-brachii-tendon-rupture
#18
Nicholas Pflederer, Zacharias Zitterkopf, Shailendra Saxena
BACKGROUND: Rupture of the distal biceps tendon is seen in both the emergency and primary care settings. It most commonly occurs after excessive tension exerted on a flexed forearm. Knowledge of the anatomy, pathophysiology, historical and physical examination findings, as well as the workup, diagnosis, and treatment of distal biceps tendon rupture are essential in achieving good outcomes, as delays in treatment can make surgical repair more challenging and less efficacious. CASE REPORT: A healthy 38-year-old male presented to his primary care physician complaining of right elbow pain that started while lifting an all-terrain vehicle into a truck...
September 22, 2018: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/30233967/distal-biceps-tendon-anatomic-repair
#19
Christopher C Schmidt, Joseph F Styron, Edward A Lin, Brandon T Brown
Distal biceps injuries, which usually occur in active middle-aged men, can result in chronic pain and loss of supination and flexion strength3 ,4 . Surgical repair of a ruptured distal biceps tendon can reliably decrease pain and improve strength compared with nonoperative management3 ,4 . However, even following successful healing and rehabilitation of a surgically repaired biceps tendon, full supination strength is rarely restored5 -7 . The expected outcome following distal biceps repair using a traditional anterior approach is a measurable loss of rotational strength, especially from neutral to supinated positions5 ,7 ...
December 28, 2017: JBJS Essential Surgical Techniques
https://www.readbyqxmd.com/read/30233954/arthroscopic-tenodesis-of-the-long-head-of-the-biceps-tendon
#20
Yang-Soo Kim, Jin-Young Jeong, Hyo-Jin Lee
Lesions of the long head of the biceps brachii tendon (LHBT) are a common source of shoulder pain and dysfunction. Although the exact role of the LHBT in shoulder biomechanics is not clearly understood, pathological involvement of this tendon is a well-known pain generator and frequently the clinical presentation consists of both anterior pain and flexion loss. The initial treatment for lesions of the LHBT should be nonoperative, but if that fails or if the LHBT lesion is combined with rotator cuff lesions or other lesions that need to be repaired surgically, surgical intervention is indicated...
September 28, 2017: JBJS Essential Surgical Techniques
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