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https://www.readbyqxmd.com/read/29139158/macro-anatomical-and-morphometric-studies-of-the-hindlimb-of-grasscutter-thryonomys-swinderianus-temminck-1827
#1
K T Onwuama, S A Ojo, J O Hambolu, T Dzenda, F O Zakari, S O Salami
The hindlimb of the grasscutter (Thryonomys swinderianus, Temminck-1827) was studied using 12 adult (≥6 months) rats of either sex with the mean weights of 1.42 ± 0.20 kg and 0.82 ± 0.13 kg for buck (n = 6) and doe (n = 6), respectively (p < .05). Characteristics of the bones were studied by gross observation after their preparation. Measurements of different segments of the hindlimb were also taken, giving a total average length of 31.80 cm. Correlation coefficients between length of bone and weight of rats were positive (p < ...
November 14, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/29138871/revision-shoulder-arthroplasty-with-a%C3%A2-reverse-shoulder-prosthesis-use-of-structural-allograft-for-glenoid-bone-loss
#2
S E Ozgur, R Sadeghpour, T R Norris
INTRODUCTION: Revision shoulder arthroplasty presents many unique and complex challenges when glenoid bone loss is involved. A distorted and medialized anatomy prevents the proper mechanics of the reverse prosthesis with regard to deltoid tension and ultimate function. This paper highlights one surgeon's experience using structural allograft for glenoid bone loss. PATIENTS AND METHODS: In all, 20 patients for a total of 24 surgeries with a medialized glenoid and/or substantial glenoid bone loss of grade IIB or higher were evaluated in this retrospective study...
November 14, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/29137339/meta-analysis-of-differences-in-constant-murley-scores-for-three-mid-shaft-clavicular-fracture-treatments
#3
Wei Jiang, Hua Wang, Yu-Sheng Li, Tian-Jian Zhou, Xin-Jia Hu
There is no consensus on the optimal treatment for mid-shaft clavicular fracture. We conducted a meta-analysis to compare the effectiveness of non-operative treatment, plate fixation, and intramedullary pin fixation in terms of the Constant-Murley Score (CMS) for treatment of mid-shaft clavicular fracture. Comprehensive search of the Embase, Cochrane Library and PubMed was conducted to retrieve relevant randomized controlled trials (RCTs). A random-effect network meta-analysis was conducted within a Bayesian framework using Markov Chain Monte Carlo (MCMC) in OpenBUGS 3...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137023/a-case-report-of-schatzker-type-vi-tibial-plateau-fracture-treated-with-double-reverse-traction-closed-reduction-combined-with-minimally-invasive-percutaneous-plate-osteosynthesis-technique-a-case-report
#4
Dian-Qing Li, De-Ye Song, Jiang-Dong Ni, Mu-Liang Ding, Jun Huang
RATIONALE: The knee joint is an important weight-bearing joint, tibial plateau fractures affect knee function and stability. High-energy intra-articular fractures involving the tibial plateau can cause management-related problems such as wound dehiscence; severe comminution leading to malalignment; and delayed complications such as varus collapse, implant failure, and arthritis of the knee joint. The treatment of severe or complex tibial plateau fractures can be quite difficult. Traditional methods of open reduction and plating require extensive exposures, which may further compromise soft tissue and devascularize bone fragments, leading to infection...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29132641/force-spectroscopy-with-9-%C3%AE-s-resolution-and-sub-pn-stability-by-tailoring-afm-cantilever-geometry
#5
Devin T Edwards, Jaevyn K Faulk, Marc-André LeBlanc, Thomas T Perkins
Atomic force microscopy (AFM)-based single-molecule force spectroscopy (SMFS) is a powerful yet accessible means to characterize the unfolding/refolding dynamics of individual molecules and resolve closely spaced, transiently occupied folding intermediates. On a modern commercial AFM, these applications and others are now limited by the mechanical properties of the cantilever. Specifically, AFM-based SMFS data quality is degraded by a commercial cantilever's limited combination of temporal resolution, force precision, and force stability...
November 10, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/29129131/increased-wound-complication-with-intramedullary-screw-fixation-of-clavicle-fractures-is-it-thermal-necrosis
#6
Peter Domos, Graham Tytherleigh-Strong, Lee Van Rensburg
PURPOSE: Adult mid-shaft clavicle fractures are common injuries. For displaced fractures, open reduction with plate or intramedullary (IM) fixation is the widely used techniques. All methods have their own potential drawbacks, especially related to local soft tissue complications. There is little information about outcome and management of local wound complications after clavicle fracture fixations. METHODS: Ninety-seven patients underwent open reduction and internal fixation, 17 were treated with IM screw fixation and 80 with plate fixation...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29128913/radiographic-markers-for-measuring-tibial-rotation-based-on-ct-reconstructed-radiographs-an-accuracy-and-feasibility-study
#7
David Hakimian, Amal Khoury, Rami Mosheiff, Meir Liebergall, Yoram A Weil
OBJECTIVES: Malreduction in the axial plane (malrotation) following tibial fracture surgery is often undiagnosed. A few clinical and radiographic methods have been proposed for measuring tibial rotation intraoperatively, yet have failed to match the accuracy of computed tomography (CT). The aim of this study was to develop radiographic tools for future intraoperative assessment of the tibial shaft rotation profile. METHODS: The setting was a laboratory computerized analysis...
November 11, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/29125034/the-memo-slide-an-explorative-study-into-a-novel-mechanical-follow-the-leader-mechanism
#8
Paul Wj Henselmans, Stefan Gottenbos, Gerwin Smit, Paul Breedveld
Follow-the-leader propagation allows for the insertion of flexible surgical instruments along curved paths, reducing the access required for natural orifice transluminal endoscopic surgery. Currently, the most promising follow-the-leader instruments use the alternating memory method containing two mechanical memory-banks for controlling the motion of the flexible shaft, which reduces the number of actuators to a minimum. These instruments do, however, require concentric structures inside the shaft, limiting its miniaturization...
November 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29123840/a-system-of-delivering-medical-staff-members-by-helicopter-to-manage-severely-wounded-patients-in-an-area-where-medical-resources-are-limited
#9
Kohei Ishikawa, Kazuhiko Omori, Hiromichi Ohsaka, Kei Jitsuiki, Toshihiko Yoshizawa, Yasumasa Oode, Mutsumi Sakurada, Atsuhiko Mogami, Youichi Yanagawa
Aim: We review the case of a severely injured patient to evaluate the system of delivering medical staff by helicopter in areas with limited medical resources. Methods: The patient's chart was reviewed, summarized, and presented. Results: A 22-year-old woman attempted a suicidal fall after using a knife to stab herself. She was transported to a local hospital. A radiological study revealed fractures to the patient's face and the base of her skull, pneumocephalus, traumatic subarachnoid hemorrhage, stab wounds to the neck and chest, pneumothorax, unstable pelvic fracture, and right femoral shaft fracture...
January 2017: Acute Medicine & Surgery
https://www.readbyqxmd.com/read/29122411/comparative-investigation-of-percutaneous-plating-and-intramedullary-nailing-effects-on-il-6-production-in-patients-with-tibia-shaft-fracture
#10
Adel Ebrahimpour, Mohammad-Ali Okhovatpour, Mehrdad Sadighi, Amir-Hossein Sarejloo, Mohammad-Reza Minator Sajjadi
OBJECTIVE: The aim of this study was to analyze the effect of intramedullary nailing (IMN), open plating and percutaneous plating on the induction of IL-6 in patients with tibia fractures. METHODS: A total of 30 patients with tibia shaft fracture underwent either intramedullary nailing (IMN, n = 15; 14 males and 1 female; mean age: 32.1 ± 15.6), ORIF plating (n = 8; 5 males and 3 females; mean age: 60.0 ± 17.8), or percutaneous plating (n = 7; 6 males and 1 female; mean age: 43...
November 6, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/29122128/carbon-fibre-reinforced-peek-radiolucent-intramedullary-nail-for-humeral-shaft-fracture-fixation-technical-features-and-a-pilot-clinical-study
#11
Niksa Kojic, Christoph Rangger, Celenk Özgün, Jakisa Lojpur, Jerome Mueller, Yoram Folman, Eyal Behrbalk, Bore Bakota
PURPOSE: This prospective pilot study investigated the safety and efficacy of a novel radiolucent intramedullary nail (IMN) made of Carbon-Fibre-Reinforced Polyaryl-Ether-Ether-Ketone (CFR-PEEK) for humeral shaft fracture fixation. STUDY DESIGN: A prospective, single-arm, four-centre study. PATIENTS AND METHODS: A total of 46 patients with 46 humeral fractures classified as 12 A-B were treated with a novel CFR-PEEK IMN and followed for 12 months...
November 2017: Injury
https://www.readbyqxmd.com/read/29122120/comparison-of-volar-and-dorsal-plate-osteosynthesis-for-radial-shaft-fractures-an-anatomical-pilot-study
#12
Patrick Holweg, Gloria M Hohenberger, Angelika M Schwarz, Mario Staresinic, Renate Krassnig, Stephan Grechenig
BACKGROUND: No publication has yet described the interface between the radius and the plate in various positions. Neither clinical examination nor assessment of fracture radiographs provides information about the anatomy of the radius before injury. PURPOSE: We investigated radius anatomy to analyse dorsal and volar plate-to-bone fit for radial shaft fracture management. METHODS: We examined 20 specimens from human adult cadavers. An 8-hole 3...
November 2017: Injury
https://www.readbyqxmd.com/read/29122119/avoiding-radial-nerve-palsy-in-proximal-radius-shaft-plating-a-cadaver-study
#13
Angelika M Schwarz, Gloria M Hohenberger, Andreas H Weiglein, Regina Riedl, Mario Staresinic, Stephan Grechenig
BACKGROUND: Opinions vary concerning the position of forearm rotation during detachment of the supinator in radial nerve palsy Henry's and Thompson's approaches. PURPOSE: To define the optimal forearm position for a safe detachment of the supinator during these approaches and to clarify their close relationship to the posterior interosseous nerve (PIN). METHODS: The study sample comprised 90 upper extremities of 45 human adult cadavers, embalmed using Thiel's method...
November 2017: Injury
https://www.readbyqxmd.com/read/29122115/humeral-shaft-cerclage-wiring-a-safe-technique-to-prevent-radial-nerve-injury
#14
Stephan Grechenig, Gloria Hohenberger, Bore Bakota, Mario Staresinic, Peter Grechenig, Antonio Ernstberger
Humeral periprosthetic fractures are a challenging problem and their occurrence has increased, particularly over the last decade. The role of cerclage wires or cables in these fractures includes revisions with longer stems, and augmentation of a plate osteosynthesis in which the stem does not allow additional screw placement or structural bone grafts as supplementary fixation. These procedures are demanding because of the proximity of the radial nerve within the operating field. Placing a cerclage wire or cable around the fractured fragments offers a simple and safe procedure to avoid radial nerve injury or palsy in the treatment of complex humeral shaft fractures...
November 2017: Injury
https://www.readbyqxmd.com/read/29120874/unusual-suicide-by-a-speargun-shot-through-the-mouth-a-case-report
#15
Youssef Nouma, Sami Krimi, Karama Regaieg
We report an unusual case of suicide committed with a speargun shot through the mouth, causing a penetrating brain injury. The special features of the present case are not only related to the method chosen for the purpose but also to the difficulties encountered in confirming the diagnosis. Although this type of suicide has been previously reported, this case is particularly interesting in terms of the shooting mechanism and manner of death. Because of the length of the weapon, which was apparently used and found at the scene, a suicidal manner of death first seemed unlikely and the possibility of a simulated suicide was raised...
November 9, 2017: American Journal of Forensic Medicine and Pathology
https://www.readbyqxmd.com/read/29118524/collision-tumor-between-trichofolliculoma-and-melanocytic-nevus
#16
Christel Bolte, Roberto Cullen, Ivo Sazunic
Trichofolliculoma (TF) is a hamartomatous hair follicle-related tumor, clinically described as a dome-shaped papule with a central pore crossed by one or more silky white hairs. Histologically, it described as a cystic cavity containing keratinous debris, hair shaft fragments, and numerous hair follicles arising from its linings. Collision or compound tumors are a coexistence of two or more identifiable tumors in the same lesion. We present a case of a 47-year-old man with a lesion on his left cheek clinically characterized as a TF...
October 2017: International Journal of Trichology
https://www.readbyqxmd.com/read/29117099/field-tests-of-a-portable-mems-gravimeter
#17
Richard P Middlemiss, Steven G Bramsiepe, Rebecca Douglas, James Hough, Douglas J Paul, Sheila Rowan, Giles D Hammond
Gravimeters are used to measure density anomalies under the ground. They are applied in many different fields from volcanology to oil and gas exploration, but present commercial systems are costly and massive. A new type of gravity sensor has been developed that utilises the same fabrication methods as those used to make mobile phone accelerometers. In this study, we describe the first results of a field-portable microelectromechanical system (MEMS) gravimeter. The stability of the gravimeter is demonstrated through undertaking a multi-day measurement with a standard deviation of 5...
November 8, 2017: Sensors
https://www.readbyqxmd.com/read/29116576/bridging-hard-callus-at-48%C3%A2-days-in-an-open-femoral-shaft-fracture-with-segmental-defect-treated-with-a-first-stage-masquelet-technique-i-wasn-t-expecting-that
#18
Andrew James Hotchen, Lynne V Barr, Matija Krkovic
The Masquelet technique is a strategy for management of segmental bone defects. It is a two-stage procedure that involves inducing a synovial-like membrane that can be used for a bone graft. Segmental bone defects can occur following trauma and can accompany traumatic brain injury. There is a well-documented, albeit debated, association between traumatic brain injury and increased rate of new bone formation. Here, we present a case of unexpected callus formation in a segmental femoral fracture. The patient had a traumatic brain injury and was treated with the first stage of the Masquelet technique...
November 7, 2017: Strategies in Trauma and Limb Reconstruction
https://www.readbyqxmd.com/read/29115844/scalable-fabrication-framework-of-implantable-ultrathin-and-flexible-probes-with-biodegradable-sacrificial-layers
#19
Xiangbing Jiao, Yuan Wang, Quan Qing
For long-term biocompatibility and performance, implanted probes need further reduce their size and mechanical stiffness to match that of the surrounding cells, which, however, makes accurate and minimal invasive insertion operations difficult due to lack of rigidity, and brings additional complications in assembling and surgery. Here we report a scalable fabrication framework of implantable probes utilizing biodegradable sacrificial layers to address this challenge. Briefly, the integrated biodegradable sacrificial layer can dissolve in physiological fluids shortly after implantation, which allows in situ formation of functional ultrathin film structures off the initial small and rigid supporting backbone...
November 8, 2017: Nano Letters
https://www.readbyqxmd.com/read/29114149/cat-fur-mite-lynxacarus-radovskyi-in-india
#20
C Jayanthy, B Nagarajan, Bhaskaran Ravi Latha
A Persian cat with the complaint of lustreless dry coat, salt and pepper appearance was brought to the dermatology unit of Madras Veterinary College, Chennai. Microscopical examination of the tape impression and hair coat brushings revealed Lynxacarus radovskyi mites with eggs adhering to the hair shaft. The cat was treated with Ivermectin @ 300 µg/kg body weight subcutaneously once a week for 5 weeks after getting owner's consent. The cat was free from the parasites 5 weeks post treatment. Fomite and close contact might aid the spread of infestation...
December 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
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