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Muscular rupture

Mona Alilet, Julien Behr, Jean-Philippe Nueffer, Benoit Barbier-Brion, Sébastien Aubry
: The subscapularis (SSC) muscle is the most powerful of the rotator cuff muscles, and plays an important role in shoulder motion and stabilization. SSC tendon tear is quite uncommon, compared to the supraspinatus (SSP) tendon, and, most of the time, part of a large rupture of the rotator cuff. Various complementary imaging techniques can be used to obtain an accurate diagnosis of SSC tendon lesions, as well as their extension and muscular impact. Pre-operative diagnosis by imaging is a key issue, since a lesion of the SSC tendon impacts on treatment, surgical approach, and post-operative functional prognosis of rotator cuff injuries...
October 17, 2016: Insights Into Imaging
Ryuta Kinugasa, Naoto Yamamura, Shantanu Sinha, Shu Takagi
Tendon curvature plays a key role in mechanical gain (amplifying the joint excursion relative to fiber length change) during joint motion, but the mechanism remains unresolved. A three-dimensional finite element (FE) model was used to investigate the influence of intramuscular fiber orientation upon the curvature pattern of the Achilles tendon during active muscular contraction. Two simulation models, with fiber pennation angles of θ = 25° and 47° were tested for the gastrocnemius and soleus muscles. A smaller pennation angle (25°) of the soleus muscle fibers was accompanied by a large change in curvature whereas a larger pennation angle (47°) of the soleus muscle was accompanied by small effects...
October 3, 2016: Journal of Biomechanics
Hiroyuki Hashimoto, Tetsuro Tamaki, Maki Hirata, Yoshiyasu Uchiyama, Masato Sato, Joji Mochida
Background. Significant and/or complete rupture in the musculotendinous junction (MTJ) is a challenging lesion to treat because of the lack of reliable suture methods. Skeletal muscle-derived multipotent stem cell (Sk-MSC) sheet-pellets, which are able to reconstitute peripheral nerve and muscular/vascular tissues with robust connective tissue networks, have been applied as a "bio-bond". Methods. Sk-MSC sheet-pellets, derived from GFP transgenic-mice after 7 days of expansion culture, were detached with EDTA to maintain cell-cell connections...
2016: PeerJ
Noriyuki Egawa, Junji Ueda, Masatsugu Hiraki, Takao Ide, Satoshi Inoue, Yuichiro Sakamoto, Hirokazu Noshiro
Gallbladder rupture due to blunt abdominal injury is rare. There are few reports of traumatic gallbladder injury, and it is commonly associated with other concomitant visceral injuries. Therefore, it is difficult to diagnose traumatic gallbladder rupture preoperatively when it is caused by blunt abdominal injury. We report a patient who underwent laparoscopic cholecystectomy after an exact preoperative diagnosis of traumatic gallbladder rupture. A 43-year-old man was admitted to our hospital due to blunt abdominal trauma...
May 2016: Case Reports in Gastroenterology
Yue-Qi Zhu, Da-Ying Dai, Hai-Xia Xing, Yong-Hong Ding, Ramanathan Kadirvel, David F Kallmes
OBJECTIVE: To assess the feasibility of using MicroFil polymer perfusion to detect concomitant saccular aneurysms in an intracranial arterial dolichoectasia (IADE) model in mice, and to report detailed histomorphometric features of these aneurysms. MATERIALS AND METHODS: IADE models were created in C57/BL6 mice via microsurgical injection of 25 mU elastase into the cisterna magna. The cerebral vasculature was perfused with MicroFil polymer and harvested at 1, 3, and 7 days, and 2 and 4 weeks (n=8 for each group)...
July 5, 2016: Journal of Neurointerventional Surgery
Jieru Zhou, Min Yao, Husheng Wang, Weilin Tan, Pin Chen, Xipeng Wang
STUDY OBJECTIVE: Owing to the increase in cesarean sections (C-sections) worldwide, long-term complications such as postmenstrual spotting, chronic pelvic pain, and C-section scar ectopic pregnancies have created a new medical era of gynecologic disease. A new type of vaginal repair is evaluated to repair C-section diverticulum (CSD) and rebuild the muscular layer to improve symptoms of abnormal uterine bleeding and decrease the risk of uterine rupture. DESIGN: Retrospective cohort study (Canadian Task Force classification II-2)...
September 2016: Journal of Minimally Invasive Gynecology
Mohammed Mohammed El-Naggar, Joanne Cable, Safaa Zaky Arafa, Samir Ahmed El-Abbassy, Graham C Kearn
Scanning and transmission electron microscopy (TEM) were used to study the histopathological effects of the monogenean Macrogyrodactylus clarii Gussev, 1961 on the gills of the catfish Clarias gariepinus (Burchell). Suction generated during attachment created 'footprints' on host surfaces in which the host tissues were elevated above the general gill surface. 'Footprints' were bordered by four clefts caused by the muscular flaps on the anterior, lateral and posterior margins of the haptor. The hamuli points penetrate the gill tissue but no evidence was found for the insertion of the marginal hooklets...
2016: Folia Parasitologica
Hiroyuki A Watanabe, Taketoshi Fujimoto, Yo Kato, Mayumi Sasaki, Toshikazu Ikusue
A man in his early thirties presented to our clinic with right lower abdominal pain. Computed tomography (CT) and ultrasonography (US) revealed a swollen appendix and an appendicolith. Abscess formation was not observed but ongoing appendiceal rupture was not ruled out. Three months after successful conservative therapy, the lumen of the apical portion was kept dilated and laparoscopic interval appendectomy was performed. No tumorous findings were observed macroscopically. However, histology revealed many tiny nests infiltrating the submucosa, muscular layer, and subserosa at the root of the appendix...
August 2016: Clinical Journal of Gastroenterology
Kristina L Cohen, Marc A Seid, Karen M Warkentin
Environmentally cued hatching allows embryos to escape dangers and exploit new opportunities. Such adaptive responses require a flexibly regulated hatching mechanism sufficiently fast to meet relevant challenges. Anurans show widespread, diverse cued hatching responses, but their described hatching mechanisms are slow, and regulation of timing is unknown. Arboreal embryos of red-eyed treefrogs, Agalychnis callidryas, escape from snake attacks and other threats by very rapid premature hatching. We used videography, manipulation of hatching embryos and electron microscopy to investigate their hatching mechanism...
June 15, 2016: Journal of Experimental Biology
Soykan Barlas, Arzu Akan, Yavuz Eryavuz, Refik Bademci, Giray Yavuz, Sedat Kamali, Gülçin Kamali
Hydatid disease is a parasitic infestation of humans and herbivorous animals, caused by Echinococcus granulosus. A 55-year-old woman had no prior surgery for hydatid disease earlier. Total cystopericystectomy was performed without cyst rupture. Albendazole was given postoperatively. Neither systemic or local complications nor recurrences were found after minimum follow-up of 12 months, and the laboratory test results were within the normal ranges. Since primer muscular hydatidosis is a very rare disease, care should be taken in diagnosis of cystic mass of skeletal muscle, especially in endemic areas...
April 2016: Indian Journal of Surgery
Deepak N Bhatia
Distal biceps rupture is associated with significant functional disability, and surgical treatment involves open or endoscopic-assisted repair of the ruptured tendon through an anterior incision. This report describes an endoscopic approach that is performed with 2 portals for visualization and instrumentation. Preoperative sonography is used to identify bony and soft-tissue landmarks. The viewing portal is a proximal anterolateral "parabiceps portal" developed by the author, and the landmarks and relevant anatomic relations have been derived from a preliminary anatomic study...
December 2015: Arthroscopy Techniques
Birgitte Hede Christensen, Kathrine Skov Andersen, Sten Rasmussen, Elizabeth Lykholt Andreasen, Lotte Mejlvig Nielsen, Steen Lund Jensen
BACKGROUND: Rotator cuff rupture is associated with dysfunction, pain and muscular weakness related to the upper extremity. Some evidence exists to support the beneficial effect of exercises but there is lack of evidence of which exercises imply the best effect and how physiotherapy should be administered. Therefore, the purpose of this study was to examine the effect of a neuromuscular exercise program for patients with irreparable rotator cuff rupture. METHODS: Based on sample-size calculations thirty patients with chronic irreparable rotator cuff tears (of at least m...
2016: BMC Musculoskeletal Disorders
Mario Carminati, Luca Giugno, Massimo Chessa, Gianfranco Butera, Luciane Piazza, Claudio Bussadori
Coronary-cameral fistulas (CCF) are anomalous connections between one or more coronary arteries and a cardiac chamber, most commonly the right ventricle or right atrium. The major indications for closure are: significant left to right shunt, myocardial ischaemia, prevention of endoarteritis or rupture. Nowadays, the first option for treatment is transcatheter closure. According to the morphology of the fistulas the most appropriate occluder device should be selected: coils (e.g., Gianturco coils, controlled-release coils, PFM coils), vascular plugs or a patent ductus arteriosus (PDA) device or muscular ventricular septal defect (VSD) device...
May 17, 2016: EuroIntervention
DănuŢ Nicolae TarniŢă, Daniela TarniŢă, Dan Cristian Grecu, Dan Marian Calafeteanu, Bogdan Căpitănescu
The Achilles tendon is the widest tendon of the human body. Achilles tendon belongs to the extrasynovial tendons group and this allows it a faster recovery, thanks to local hematoma from the peritenon, necessary for the scarification. We concluded that in Achilles tendon rupture treatment it is essential to maintain the tendon covering skin integrity, the peritendinous integrity, to maintain the local hematoma formed during and after tendon rupture, reattaching the ruptured tendon heads and maintain them in this position by suturing them and by relaxing the sural triceps muscle...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
Thilo Wedel, Martina Barrenschee, Christina Lange, François Cossais, Martina Böttner
Diverticula of the colon are pseudodiverticula defined by multiple outpouchings of the mucosal and submucosal layers penetrating through weak spots of the muscle coat along intramural blood vessels. A complete prolapse consists of a diverticular opening, a narrowed neck, and a thinned diverticular dome underneath the serosal covering. The susceptibility of diverticula to inflammation is explained by local ischemia, translocation of pathogens due to retained stool, stercoral trauma by fecaliths, and microperforations...
April 2015: Viszeralmedizin
Joanna Kacperczyk, Paweł Bartnik, Ewa Romejko-Wolniewicz, Agnieszka Dobrowolska-Redo
Uterine fibroids (leiomyomas) are benign smooth muscle tumors of the uterus. Fibroids can develop anywhere within the muscular wall. Leiomyomas may be associated with infertility. Laparoscopic myomectomy is often used to remove symptomatic intramural or subserosal fibroids. Advantages of the procedure include short recovery time and minimal perioperative morbidity. At the same time, the multilayer suture technique is more complicated during laparoscopy. A rare but serious complication of laparoscopic myomectomies is uterine rupture...
March 2016: Anticancer Research
Andoria Tjondrokoesoemo, Tobias G Schips, Michelle A Sargent, Davy Vanhoutte, Onur Kanisicak, Vikram Prasad, Suh-Chin J Lin, Marjorie Maillet, Jeffery D Molkentin
Duchenne muscular dystrophy (DMD) is an X-linked recessive disease caused by mutations in the gene encoding dystrophin. Loss of dystrophin protein compromises the stability of the sarcolemma membrane surrounding each muscle cell fiber, leading to membrane ruptures and leakiness that induces myofiber necrosis, a subsequent inflammatory response, and progressive tissue fibrosis with loss of functional capacity. Cathepsin S (Ctss) is a cysteine protease that is actively secreted in areas of tissue injury and ongoing inflammation, where it participates in extracellular matrix remodeling and healing...
May 6, 2016: Journal of Biological Chemistry
Akira Mitsuyoshi, Shinshichi Hamada, Tsuyoshi Tachibana, Teppei Momono, Hiroki Aoyama, Yuhei Kondo, Kenta Inoguchi, Daiju Yokoyama, Masayuki Nakau, Sato Suzaki, Hiroshi Okabe, Ken Yanagibashi
We aimed to histologically observe portal venous gas (PVG)-causing intestinal pneumatosis (IP) and evaluate pathogenic mechanisms and therapeutic strategies, including decisions on whether emergency surgery should be performed. Autopsy was performed in two cases of nonocclusive mesenteric ischemia (NOMI). We directly histologically observed the pathogenic mechanisms of IP caused by gas-producing bacteria and IP considered to be caused by mechanical damage to the intestinal mucosa. IP can be classified hypothetically into the following types according to pathogenesis: (1) infection, (2) rupture (damage) of the intestinal mucosa + increased intestinal intraluminal pressure, and (3) mixed type...
December 2015: Surgical Case Reports
Xin Yang, Jianhua Wei, Delin Lei, Yanpu Liu, Wei Wu
Cell-free approach represents a philosophical shift from the prevailing focus on cells in vascular tissue engineering. Porous elastomeric grafts made of poly(glycerol sebacate) (PGS) enforced with polycaprolactone (PCL) nano-fibers degrade rapidly and yield neoarteries nearly free of foreign materials in rat abdominal aorta. However, considering the larger variation of blood pressure and slower host remodeling in human body than in rat, it is important to investigate the in vivo performance of PGS-PCL graft with enhanced mechanical properties, so that optimized arterial grafts could be developed for clinical translation...
May 2016: Biomaterials
Salomon Jasqui-Remba, Ruy Ernesto Rodriguez-Corlay
In this case report, we present an acute rupture in the muscular tendinous junction of a posterior tibialis muscle in a bimalleolar closed ankle fracture after a high-energy trauma in a 30-year-old patient with no significant medical history. Fracture was confirmed by simple X-rays, and was treated with an open reduction in which both of the fractures were treated with osteosynthesis material and reparation of the syndesmosis. If left untreated, this uncommon finding can result in a bad postsurgical outcome; we believe this injury is more common but under-reported in the literature...
2016: BMJ Case Reports
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