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Muscle rupture

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https://www.readbyqxmd.com/read/28499903/utilization-of-paine-s-technique-projecting-puncture-point-to-the-skull-and-skin
#1
Hiroaki Matsuzaki, Tadahiro Otsuka, Ken Uekawa, Takashi Nakagawa, Nobuyuki Tsubota
OBJECTIVE: Ventriculostomy from Paine's point is an effective technique to obtain a slack brain for aneurysm surgery. This study aimed to use Paine's point for other neurosurgical procedures (except for those that require pterional approach) by delineation of surface landmarks for identification of Paine's point on the cranium and scalp. METHODS: Based on the anatomical knowledge and examination of 3D CT images of skull, we determined novel surface landmarks to identify Paine's point on cranium and scalp...
May 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28495756/cystic-fibrosis-transmembrane-conductance-regulator-mediates-tenogenic-differentiation-of-tendon-derived-stem-cells-and-tendon-repair-accelerating-tendon-injury-healing-by-intervening-in-its-downstream-signaling
#2
Yang Liu, Jia Xu, Liangliang Xu, Tianyi Wu, Yuxin Sun, Yuk-Wai Lee, Bin Wang, Hsiao-Chang Chan, Xiaohua Jiang, Jinfang Zhang, Gang Li
Tendons are a mechanosensitive tissue, which enables them to transmit to bone forces that are derived from muscle. Patients with tendon injuries, such as tendinopathy or tendon rupture, were often observed with matrix degeneration, and the healing of tendon injuries remains a challenge as a result of the limited understanding of tendon biology. Our study demonstrates that the stretch-mediated activation channel, cystic fibrosis transmembrane conductance regulator (CFTR), was up-regulated in tendon-derived stem cells (TDSCs) during tenogenic differentiation under mechanical stretching...
May 11, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28495576/quantitative-assessment-of-fatty-infiltration-and-muscle-volume-of-the-rotator-cuff-muscles-using-3-dimensional-2-point-dixon-magnetic-resonance-imaging
#3
Noboru Matsumura, Sota Oguro, Shigeo Okuda, Masahiro Jinzaki, Morio Matsumoto, Masaya Nakamura, Takeo Nagura
BACKGROUND: In patients with rotator cuff tears, muscle degeneration is known to be a predictor of irreparable tears and poor outcomes after surgical repair. Fatty infiltration and volume of the whole muscles constituting the rotator cuff were quantitatively assessed using 3-dimensional 2-point Dixon magnetic resonance imaging. METHODS: Ten shoulders with a partial-thickness tear, 10 shoulders with an isolated supraspinatus tear, and 10 shoulders with a massive tear involving supraspinatus and infraspinatus were compared with 10 control shoulders after matching age and sex...
May 8, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28493801/imaging-of-hydatid-disease-with-a-focus-on-extrahepatic-involvement
#4
Eugenio Zalaquett, Christine Menias, Francisco Garrido, Matías Vargas, José Francisco Olivares, Daniel Campos, Natalia Pinochet, Antonio Luna, Nirvikar Dahiya, Álvaro Huete
Hydatid disease (HD) is a parasitic infection caused by the larvae of a tapeworm that is endemic to many regions around the world-South America, Africa, and Asia, in particular. Humans are infected as intermediate hosts in the parasite's life cycle; thus, HD can be seen in persons living in areas where animal husbandry is practiced. However, owing to the varied patterns of migration and immigration during the past several decades, HD can be diagnosed in individuals living anywhere. The liver is the most common organ involved, with hepatic HD accounting for the majority of published cases...
May 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28490606/comparison-of-10-murine-models-reveals-a-distinct-biomechanical-phenotype-in-thoracic-aortic-aneurysms
#5
C Bellini, M R Bersi, A W Caulk, J Ferruzzi, D M Milewicz, F Ramirez, D B Rifkin, G Tellides, H Yanagisawa, J D Humphrey
Thoracic aortic aneurysms are life-threatening lesions that afflict young and old individuals alike. They frequently associate with genetic mutations and are characterized by reduced elastic fibre integrity, dysfunctional smooth muscle cells, improperly remodelled collagen and pooled mucoid material. There is a pressing need to understand better the compromised structural integrity of the aorta that results from these genetic mutations and renders the wall vulnerable to dilatation, dissection or rupture. In this paper, we compare the biaxial mechanical properties of the ascending aorta from 10 murine models: wild-type controls, acute elastase-treated, and eight models with genetic mutations affecting extracellular matrix proteins, transmembrane receptors, cytoskeletal proteins, or intracellular signalling molecules...
May 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28473100/coronary-artery-calcification-from-mechanism-to-molecular-imaging
#6
REVIEW
Takehiro Nakahara, Marc R Dweck, Navneet Narula, David Pisapia, Jagat Narula, H William Strauss
Vascular calcification is a hallmark of atherosclerosis. The location, density, and confluence of calcification may change portions of the arterial conduit to a noncompliant structure. Calcifications may also seed the cap of a thin cap fibroatheroma, altering tensile forces on the cap and rendering the lesion prone to rupture. Many local and systemic factors participate in this process, including hyperlipidemia, ongoing inflammation, large necrotic cores, and diabetes. Vascular cells can undergo chondrogenic or osteogenic differentiation, causing mineralization of membranous bone and formation of endochondral bone...
May 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28467100/augmented-versus-nonaugmented-repair-of-acute-achilles-tendon-rupture-a-systematic-review-and-meta-analysis
#7
Yi-Jun Zhang, Chi Zhang, Quan Wang, Xiang-Jin Lin
BACKGROUND: Although simple end-to-end repair of the Achilles tendon is common, many augmented repair protocols have been implemented for acute Achilles tendon rupture. However, whether augmented repair is better than nonaugmented repair of an acute Achilles tendon rupture is still unknown. PURPOSE: To conduct a meta-analysis to determine whether augmented surgical repair of an acute Achilles tendon rupture improved subjective patient satisfaction without an increase in rerupture rates...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28465195/extensor-indicis-proprius-tendon-transfer-using-shear-wave-elastography
#8
J Lamouille, C Müller, S Aubry, S Bensamoun, W Raffoul, S Durand
The means for judging optimal tension during tendon transfers are approximate and not very quantifiable. The purpose of this study was to demonstrate the feasibility of quantitatively assessing muscular mechanical properties intraoperatively using ultrasound elastography (shear wave elastography [SWE]) during extensor indicis proprius (EIP) transfer. We report two cases of EIP transfer for post-traumatic rupture of the extensor pollicis longus muscle. Ultrasound acquisitions measured the elasticity modulus of the EIP muscle at different stages: rest, active extension, active extension against resistance, EIP section, distal passive traction of the tendon, after tendon transfer at rest and then during active extension...
March 7, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28461956/distal-triceps-ruptures
#9
REVIEW
Mehmet Demirhan, Ali Ersen
Distal triceps ruptures are rare injuries due to the special anatomical features of the muscle and tendon-bone junction.This injury typically occurs at the tendon-bone junction due to an eccentric contraction of the muscle.The treatment is controversial, especially in partial ruptures; surgical repair is indicated for complete ruptures of the distal triceps tendon.Several repair techniques have been described for acute complete ruptures.Chronic ruptures often require reconstruction rather than direct repair...
June 2016: EFORT Open Rev
https://www.readbyqxmd.com/read/28460654/myocarditis-flail-tricuspid-valve-and-normal-rhythm-an-exceptional-form-of-neonatal-cardiac-lupus
#10
María-Teresa González-López, Ramón Pérez-Caballero-Martínez, Juan-Miguel Gil-Jaurena
Neonatal cardiac lupus is a rare, passively acquired autoimmune disease. We report a case of in utero myocarditis, confirmed postnatally, with papillary muscle rupture and severe tricuspid regurgitation after birth in the absence of conduction disturbances. Tricuspid repair was successfully performed with polytetrafluoroethylene neochordae. In this article, we discuss the pathophysiology, medical and surgical management, and implications at follow-up in this unique scenario.
May 2, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/28460192/proton-density-fat-fraction-of-rotator-cuff-muscles-is-associated-with-isometric-strength-10-years-after-rotator-cuff-repair-a-quantitative-magnetic-resonance-imaging-study-of-the-shoulder
#11
Dimitrios C Karampinos, Christian Holwein, Stefan Buchmann, Thomas Baum, Stefan Ruschke, Alexandra S Gersing, Reto Sutter, Andreas B Imhoff, Ernst J Rummeny, Pia M Jungmann
BACKGROUND: Quantitative muscle fat-fraction magnetic resonance (MR) imaging techniques correlate with semiquantitative Goutallier scores with failure after rotator cuff (RC) repair. PURPOSE: To investigate the relationship of proton density fat fraction (PDFF) of the RC muscles with semiquantitative MR scores, cartilage T2 relaxation times, and clinical isometric strength measurements in patients 10 years after unilateral RC repair. STUDY DESIGN: Cross-sectional study; Level of evidence, 3...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28449573/a-case-of-ruptured-hepatic-angiomyolipoma-in-a-young-male
#12
Sun Hwa Kim, Tae Wook Kang, Kyunghee Lim, Hyun Sung Joh, Jiseok Kang, Dong Hyun Sinn
A 31-year-old male visited a local hospital due to sudden-onset severe abdominal pain. Abdominal computed tomography revealed a solid cystic mass with a size of approximately 12 cm and exhibiting both hemorrhage and fluid collection in the pelvic cavity. Emergency angiography and embolization were performed, and a large hepatic tumor was subsequently surgically resected. The tumor cells stained positive for human melanoma black-45 and smooth-muscle actin, and the pathologic diagnosis was hepatic angiomyolipoma...
April 28, 2017: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/28445290/efficacy-of-quadriceps-vastus-medialis-dry-needling-in-a-rehabilitation-protocol-after-surgical-reconstruction-of-complete-anterior-cruciate-ligament-rupture
#13
Jorge Velázquez-Saornil, Beatriz Ruíz-Ruíz, David Rodríguez-Sanz, Carlos Romero-Morales, Daniel López-López, Cesar Calvo-Lobo
BACKGROUND: Several new rehabilitation modalities have been proposed after anterior cruciate ligament (ACL) reconstruction. Among these, trigger point dry needling (TrP-DN) might be useful in the treatment of myofascial pain syndrome associated with ACL reconstruction to reduce pain intensity, increase knee flexion range and modify the mechanical properties of the quadriceps muscle during late-stage rehabilitation. To date, this is the first randomized clinical trial to support the use of TrP-DN in the early rehabilitation process after ACL reconstruction...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28443250/pectoralis-major-tear-an-unusual-and-rare-presentation
#14
Vikram V Kadu, K A Saindane, Ninad Godghate, Neha Godghate
INTRODUCTION: The pectoralis major is a very powerful muscle that forms the chest prominence and. It moves the shoulder forward and across your chest. It is best known as the muscle that you develop with the bench press exercise in gymnasium. The pectoralis major attaches to the humerus bone and is divided into two parts. The upper part is known as the "clavicular head" and the lower part the "sternal head," based on their origins from the clavicle and sternal bones, respectively. Ruptures of the pectoralis major muscle are becoming more common due to the increase in power sports weight training...
September 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28442075/passive-stiffness-of-the-ankle-and-plantar-flexor-muscle-performance-after-achilles-tendon-repair-a-cross-sectional-study
#15
Pollyana R T Borges, Thiago R T Santos, Paula R S Procópio, Jessica H D Chelidonopoulos, Roberto Zambelli, Juliana M Ocarino
BACKGROUND: Deficits in ankle muscle strength and ankle stiffness may be present in those subjects who underwent surgical treatment for an Achilles tendon rupture. The presence of these long-term deficits may contribute to a lower performance during daily activities and may be linked to future injuries. OBJECTIVE: To compare the ankle passive stiffness and the plantar flexor muscle performance in patients who underwent unilateral surgical treatment of Achilles tendon rupture with nonsurgical subjects...
January 2017: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/28439304/is-percutaneous-medial-hamstring-myofascial-lengthening-as-anatomically-effective-and-safe-as-the-open-procedure
#16
T Mansour, J Derienne, M Daher, D Sarraf, Y Zoghbi, I Ghanem
BACKGROUND: Medial hamstring fractional lengthening is commonly performed in children with cerebral palsy (CP) to decrease contracture and/or to improve gait. Percutaneous procedures are gaining more and more popularity, even in the paediatric population, with equivocal results. The purpose of this paper was to determine the efficacy and safety of percutaneous medial hamstring myofascial lengthening (PHL). METHODS: This is a prospective randomised controlled trial including 31 knees from 18 consecutive patients with CP scheduled for medial hamstring lengthening in the setting of multilevel tendon lengthening procedures in a university hospital...
2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28428648/ultrasound-of-ankles-in-the-diagnosis-of-complications-of-chikungunya-fever
#17
Roberto Mogami, João Luiz Pereira Vaz, Yêdda de Fátima Barcelos Chagas, Rodrigo Sperling Torezani, André de Almeida Vieira, Ana Célia Baptista Koifman, Yasmin Baptista Barbosa, Mirhelen Mendes de Abreu
OBJECTIVE: To describe the main ultrasound findings of chikungunya fever in the ankle. MATERIALS AND METHODS: This was a cross-sectional observational study involving 52 patients referred to the Hospital Universitário Pedro Ernesto and presenting with clinical and biochemical evidence of chikungunya fever. The examinations were performed by a radiologist with more than 20 years of experience in ultrasound. RESULTS: The predominant gender was female (in 88...
March 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/28412911/pharmacological-therapy-of-abdominal-aortic-aneurysm-an-update
#18
Yi-Dong Wang, Zhen-Jie Liu, Jun Ren, Mei-Xiang Xiang
Abdominal aortic aneurysm (AAA), a progressive segmental abdominal aortic dilation, is associated with high mortality. AAA is characterized by inflammation, smooth muscle cell (SMC) depletion and extracellular matrix (ECM) degradation. Surgical intervention and endovascular therapy are recommended to prevent rupture of large AAAs. Unfortunately, there is no reliable pharmacological agent available to limit AAA expansion. In the past decades, extensive investigations and a body of ongoing clinical trials aimed at defining potent treatments to inhibit and even regress AAA growth...
April 13, 2017: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/28411243/potent-vasoconstrictor-kisspeptin-10-induces-atherosclerotic-plaque-progression-and-instability-reversal-by-its-receptor-gpr54-antagonist
#19
Kengo Sato, Remina Shirai, Mina Hontani, Rina Shinooka, Akinori Hasegawa, Tomoki Kichise, Tomoyuki Yamashita, Hayami Yoshizawa, Rena Watanabe, Taka-Aki Matsuyama, Hatsue Ishibashi-Ueda, Shinji Koba, Youichi Kobayashi, Tsutomu Hirano, Takuya Watanabe
BACKGROUND: Kisspeptin-10 (KP-10), a potent vasoconstrictor and inhibitor of angiogenesis, and its receptor, GPR54, have currently received much attention in relation to pre-eclampsia. However, it still remains unknown whether KP-10 could affect atherogenesis. METHODS AND RESULTS: We evaluated the effects of KP-10 on human umbilical vein endothelial cells, human monocyte-derived macrophages, human aortic smooth muscle cells in vitro, and atherosclerotic lesions in apolipoprotein E-deficient (ApoE(-/-)) mice in vivo...
April 14, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28409823/an-s1p1-agonist-asp4058-suppresses-intracranial-aneurysm-through-promoting-endothelial-integrity-and-blocking-macrophage-transmigration
#20
Rie Yamamoto, Tomohiro Aoki, Hirokazu Koseki, Miyuki Fukuda, Jun Hirose, Keiichi Tsuji, Katsumi Takizawa, Shinichiro Nakamura, Haruka Miyata, Nozomu Hamakawa, Hidetoshi Kasuya, Kazuhiko Nozaki, Yoshitaka Hirayama, Ichiro Aramori, Shuh Narumiya
BACKGROUND AND PURPOSE: Intracranial aneurysm (IA), common in general public, causes lethal subarachnoid hemorrhage on rupture. Prevention of rupture of IA is therefore socially important. However, there is currently no medical treatment. Recent studies suggest that IA is a disease of chronic inflammation in the arterial wall caused by endothelial dysfunction and infiltrated macrophages. Sphingosine-1-phosphate receptor type 1 (S1P1 ) is present on the endothelium and promotes its barrier function...
April 13, 2017: British Journal of Pharmacology
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