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https://www.readbyqxmd.com/read/28319258/ct-derived-indices-of-canine-osteosarcoma-affected-antebrachial-strength
#1
Tanya C Garcia, Michele A Steffey, Allison L Zwingenberger, Leticia Daniel, Susan M Stover
OBJECTIVE: To improve the prediction of fractures in dogs with bone tumors of the distal radius by identifying computed tomography (CT) indices that correlate with antebrachial bone strength and fracture location. STUDY DESIGN: Prospective experimental study. ANIMALS: Dogs with antebrachial osteosarcoma (n = 10), and normal cadaver bones (n=9). METHODS: Antebrachia were imaged with quantitative CT prior to biomechanical testing to failure...
March 20, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28318074/perforating-and-deep-lymphatic-vessels-in-the-knee-region-an-anatomical-study-and-clinical-implications
#2
Wei-Ren Pan, Fan-Qiang Zeng, De-Guang Wang, Zhi-Qiang Qiu
BACKGROUND: To determine the relationship between the perforating and deep lymphatic vessels in the knee region for clinical implications. METHODS: Four lower limbs from two unembalmed human cadavers were used. Under a surgical microscope, 6% hydrogen peroxide was employed to detect lymph vessels accompanying the small saphenous vein, anterior tibial, posterior tibial and fibular blood vessels all commencing from distal ends of specimens. Each lymphatic vessel was inserted by a 30-gauge needle and injected with a barium sulphate mixture...
March 20, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28317554/chimpanzee-and-human-midfoot-motion-during-bipedal-walking-and-the-evolution-of-the-longitudinal-arch-of-the-foot
#3
Nicholas B Holowka, Matthew C O'Neill, Nathan E Thompson, Brigitte Demes
The longitudinal arch of the human foot is commonly thought to reduce midfoot joint motion to convert the foot into a rigid lever during push off in bipedal walking. In contrast, African apes have been observed to exhibit midfoot dorsiflexion following heel lift during terrestrial locomotion, presumably due to their possession of highly mobile midfoot joints. This assumed dichotomy between human and African ape midfoot mobility has recently been questioned based on indirect assessments of in vivo midfoot motion, such as plantar pressure and cadaver studies; however, direct quantitative analyses of African ape midfoot kinematics during locomotion remain scarce...
March 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28315184/epiphyseal-arterial-network-and-inferior-retinacular-artery-seem-critical-to-femoral-head-perfusion-in-adults-with-femoral-neck-fractures
#4
Dewei Zhao, Xing Qiu, Benjie Wang, Zihua Wang, Wei Wang, Jun Ouyang, Rona M Silva, Xiaotian Shi, Kai Kang, Dachuan Xu, Chuang Li, Shizhen Zhong, Yu Zhang, Kent E Pinkerton
BACKGROUND: A better understanding of the blood supply of the femoral head is essential to guide therapeutic strategies for patients with femoral neck fractures. However, because of the limitations of conventional techniques, the precise distribution and characteristics of intraosseous arteries of the femoral head are not well displayed. QUESTIONS/PURPOSES: To explore the characteristics and interconnections of the intraosseous vessel system between different areas of the femoral head and the possible blood supply compensatory mechanism after femoral neck fracture...
March 17, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28314939/triticeal-cartilage-the-forgotten-cartilage
#5
Iain Wilson, J Stevens, J Gnananandan, A Nabeebaccus, A Sandison, A Hunter
INTRODUCTION: The triticeal cartilage (TC) is a small cartilage found within the thyrohyoid membrane. The TC has a variable prevalence between and within individuals. It has been suggested that absence of a TC results from its failure to separate from the superior horn of the thyroid cartilage (SHTC) and that individuals without a TC will have a longer SHTC. This study aims to identify the prevalence of the TC and investigate the relationship between the length of the SHTC and presence of a TC...
March 17, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28314887/mechanical-strains-passing-through-the-acetabular-labrum-modify-its-shape-during-hip-motion-an-anatomical-study
#6
Matthieu Ollivier, Thomas Le Corroller, Sebastien Parratte, Patrick Chabrand, Jean-Noël Argenson, Olivier Gagey
PURPOSE: The function of the hip labrum during hip motion remains poorly known. Our hypothesis was that acetabular labrum will deform and change its shape during adduction to abduction movement consecutively to variation of strains passing from the acetabulum to the femoral head. An ex vivo anatomical study was conducted to analyse the morphological parameters variation of the mid-portion of the labrum (length, thickness, shape, deformation) as well as femoro-labral strains during hip adduction to abduction movement...
March 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28314067/the-effect-of-polydioxanone-hemicerclage-suture-on-the-occurrence-of-fracture-during-tibial-tuberosity-advancement-with-an-elongated-bi-directional-hinged-osteotomy
#7
Seth Bleakley, Ross H Palmer, Stephen Bresina, Sy Ping Roca, Slobodan Tepic
OBJECTIVE: To investigate the effect of hemicerclage suture on the occurrence of fractures during advancement of an elongated bi-directional hinged osteotomy (EBHO) for tibial tuberosity advancement (TTA) in dogs. STUDY DESIGN: Experimental ex vivo study. ANIMALS: Canine cadavers (n = 14) METHODS: A uniform EBHO was performed in 28 cadaveric hind limbs (n = 28) from 14 skeletally mature, medium-sized, mixed breed dogs. Paired limbs were randomly assigned with or without hemicerclage suture...
March 17, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28306334/impact-of-prone-supine-and-oblique-patient-positioning-on-cbct-image-quality-contrast-to-noise-ratio-and-figure-of-merit-value-in-the-maxillofacial-region
#8
Juha Koivisto, Maureen van Eijnatten, Jorma Järnstedt, Kirsi Holli-Helenius, Prasun Dastidar, Jan Wolff
OBJECTIVES: To assess the impact of supine, prone and oblique patient imaging positions on the image quality, contrast-to-noise ratio and figure of merit value in the maxillofacial region using a cone beam computed tomography scanner. Furthermore, the CBCT supine images were compared to supine MSCT images. METHODS: One fresh frozen cadaver head was scanned in prone, supine and oblique imaging positions using a mobile CBCT scanner. MSCT images of the head were acquired in a supine position...
March 17, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28304240/posterior-arch-c-1-screw-technique-a-cadaveric-comparison-study
#9
Marc Moisi, Christian Fisahn, Lara Tkachenko, Shiveindra Jeyamohan, Stephen Reintjes, Peter Grunert, Daniel C Norvell, R Shane Tubbs, Jeni Page, David W Newell, Peter Nora, Rod J Oskouian, Jens Chapman
OBJECTIVE Posterior atlantoaxial stabilization and fusion using C-1 lateral mass screw fixation has become commonly used in the treatment of instability and for reconstructive indications since its introduction by Goel and Laheri in 1994 and modification by Harms in 2001. Placement of such lateral mass screws can be challenging because of the proximity to the spinal cord, vertebral artery, an extensive venous plexus, and the C-2 nerve root, which overlies the designated starting point on the posterior center of the lateral mass...
March 17, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28303870/-transoral-approach-to-thyroid-gland-in-the-experiment
#10
A M Shulutko, V I Semikov, S E Gryaznov, A V Gorbacheva, A R Patalova, G T Mansurova, Yu A Boblak
AIM: To develop minimally invasive and safe endoscopic access to thyroid gland. MATERIAL AND METHODS: Transoral pre-mandibular video-assisted gas-free access to thyroid gland was developed in experimental study that included 19 human cadavers. Stereometric modeling defined the evaluation criteria including the form of basal arch of lower jaw and its height. There was no conflict of instruments in working chamber under platysma. Additional trocar was deployed to resolve the conflict between working parts of instruments during thyroid gland mobilization...
2017: Khirurgiia
https://www.readbyqxmd.com/read/28303414/identification-of-muscidae-diptera-of-medico-legal-importance-by-means-of-wing-measurements
#11
Andrzej Grzywacz, Jakub Ogiela, Adam Tofilski
Cadavers attract numerous species and genera of Muscidae, both regular elements of carrion insect assemblages, and accidental visitors. Identification of adult Muscidae may be considered difficult, particularly by non-experts. Since species identification is a vital first step in the analysis of entomological material in any forensic entomology orientated experiment and real cases, various alternative methods of species identification have been proposed. We investigated possibility of semiautomated identification by means of wing measurements as an alternative for classic morphology and DNA-based approaches...
March 16, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28302427/association-between-tibial-plateau-slopes-and-anterior-cruciate-ligament-injury-a-meta-analysis
#12
Yi-Lun Wang, Tuo Yang, Chao Zeng, Jie Wei, Dong-Xing Xie, Yuan-Heng Yang, Hui-Zhong Long, Bei Xu, Yu-Xuan Qian, Shi-de Jiang, Guang-Hua Lei
PURPOSE: To investigate the associations of medial tibial plateau slope (MTPS), lateral tibial plateau slope (LTPS), and coronal tibial plateau slope (CTPS) with anterior cruciate ligament (ACL) injury both in the general population and in different gender subgroups. METHODS: PubMed, Ovid, Embase, and Scopus databases were searched through from inception to August 31, 2016. Observational studies reporting associations of MTPS/LTPS/CTPS with ACL injury were retrieved for analysis...
March 13, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28301396/can-hyper-realistic-physical-models-of-peripheral-vessel-exposure-and-fasciotomy-replace-cadavers-for-performance-assessment
#13
Jeremy Holzmacher, Babak Sarani, Adam Puche, Guinevere Granite, Valerie Shalin, Kristy Pugh, William Teeter, Samuel Tisherman, Stacy Shackelford, Colin F Mackenzie
BACKGROUND: Work-hour restrictions have reduced operative experience for residents. The Advanced Surgical Skills for Exposure in Trauma course fills this training gap. Cadaver use has limitations including cost and availability. Hyper-realistic synthetic models may provide an alternative to cadavers. We compared same surgeon performance between synthetic and cadaveric models to determine interchangeability for formative evaluation. METHODS: 40 residents (<4wks after ASSET) and 35 faculty (mean 2...
March 15, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28299444/the-ethmoidal-arteries-a-cadaveric-study-based-on-cone-beam-computed-tomography-and-endoscopic-dissection
#14
Marco Ferrari, Luca Pianta, Andrea Borghesi, Alberto Schreiber, Marco Ravanelli, Davide Mattavelli, Vittorio Rampinelli, Francesco Belotti, Luigi Fabrizio Rodella, Roberto Maroldi, Piero Nicolai
PURPOSE: To describe the anatomical variability of the ethmoidal arteries (EAs). To evaluate the reliability of cone beam computed tomography (CBCT) in preoperative assessment of EAs. METHODS: Fourteen cadaver heads underwent CBCT and endoscopic dissection. The following anatomical features were evaluated for anterior (AEA), middle (MEA), and posterior (PEA) EAs: presence, cranio-caudal position, antero-posterior position, and dehiscence of the bony canal. Accuracy of radiological assessment was calculated...
March 15, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28298747/benefits-and-pitfalls-of-cadavers-as-learning-tool-for-ultrasound-guided-regional-anesthesia
#15
REVIEW
Chhavi Sawhney, Sanjeev Lalwani, Bikash Ranjan Ray, Sumit Sinha, Abhyuday Kumar
Ultrasound-guided regional anesthesia (UGRA), like other basic skills, should be learnt in a simulation laboratory before performing on the patient. Cadavers provide an ideal tool for learning sonoanatomy and skills required for performing UGRA. On the basis of preservation technique used, the cadavers can be formalin embalmed cadavers, Thiel cadavers (soft cadavers), and fresh frozen cadavers. We compared three types of cadavers for performing ultrasound-guided upper and lower limb blocks. We observed that fresh frozen and Thiel cadavers were less smelling and had more realistic appearance as compared to formalin embalmed cadavers...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28298044/a-novel-method-of-lengthening-the-accessory-nerve-for-direct-coaptation-during-nerve-repair-and-nerve-transfer-procedures
#16
R Shane Tubbs, Andrés A Maldonado, Yolanda Stoves, Fabian N Fries, Rong Li, Marios Loukas, Rod J Oskouian, Robert J Spinner
OBJECTIVE The accessory nerve is frequently repaired or used for nerve transfer. The length of accessory nerve available is often insufficient or marginal (under tension) for allowing direct coaptation during nerve repair or nerve transfer (neurotization), necessitating an interpositional graft. An attractive maneuver would facilitate lengthening of the accessory nerve for direct coaptation. The aim of the present study was to identify an anatomical method for such lengthening. METHODS In 20 adult cadavers, the C-2 or C-3 connections to the accessory nerve were identified medial to the sternocleidomastoid (SCM) muscle and the anatomy of the accessory nerve/cervical nerve fibers within the SCM was documented...
March 3, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28297604/biomechanical-evaluation-of-classic-solid-and-all-soft-suture-anchors-for-medial-patellofemoral-ligament-reconstruction
#17
Michael G Saper, Karim Meijer, Scott Winnier, John Popovich, James R Andrews, Charles Roth
BACKGROUND: Multiple techniques for patellar fixation with classic solid suture anchors (SAs) in medial patellofemoral ligament (MPFL) reconstruction have been described. Fixation of the graft to the patella with all-soft suture anchors (ASAs) has not been studied. Purpose/Hypothesis: To evaluate the biomechanical performance of 2 different MPFL patellar fixation techniques: ASA fixation and SA fixation. We hypothesized that the ASA group would show no statistical difference in the ultimate failure load and stiffness compared with the SA group...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28296816/low-dose-radiation-3d-intraoperative-imaging-how-low-can-we-go-an-o-arm-%C3%A2-ct-scan-cadaveric-study
#18
Vishal Sarwahi, Monica Payares, Stephen Wendolowski, Beverly Thornhill, Yungtai Lo, Terry D Amaral
STUDY DESIGN: Cadaveric study OBJECTIVE.: The objective was to evaluate O-Arm®'s ability at low dose settings to assess intraoperative screw placement. SUMMARY OF BACKGROUND DATA: Accurate placement of pedicle screws is crucial because of proximity to vital structures. Malposition of screws may result in significant morbidity and potential mortality. O-arm® provides real-time, intra-op imaging of patient's anatomy and provides higher accuracy in scoliosis surgeries, avoiding risk to vital structures...
March 14, 2017: Spine
https://www.readbyqxmd.com/read/28296814/pedicle-screw-safety-how-much-anterior-breach-is-safe-a-cadaveric-and-ct-based-study
#19
Vishal Sarwahi, Monica Payares, Rachel Gecelter, Stephen Wendolowski, Kathleen Maguire, Dan Wang, Beverly Thornhill, Terry Amaral
STUDY DESIGN: Clinical retrospective chart review and basic science study OBJECTIVES.: To determine the safety limits of an anterior/anterorolateral misplaced pedicle screw on CT scan in spinal deformity. SUMMARY OF BACKGROUND DATA: While the limits of medial breaches (<4 mm) are known, the safe limits for anterior/anterolateral breaches in spine deformity are not yet defined. METHODS: This study had two parts. In part I, post-operative CT scans of 165 patients operated on for spine deformity were reviewed for screw misplacement (2800 screws)...
March 14, 2017: Spine
https://www.readbyqxmd.com/read/28296812/pedicled-vascularized-clavicular-graft-for-anterior-cervical-arthrodesis-cadaveric-feasibility-study-technique-description-and-case-report
#20
Michael A Bohl, Michael A Mooney, Joshua S Catapano, Kaith K Almefty, Mark C Preul, Steve W Chang, U Kumar Kakarla, Edward M Reece, Jay D Turner, Randall W Porter
STUDY DESIGN: Cadaveric feasibility study. OBJECTIVES: To assess the anatomic and technical feasibility of rotating a clavicular segment on a sternocleidomastoid muscle (SCM) pedicle into the ventral cervical spine using a cadaveric model and to provide the first clinical case description of performing this procedure. SUMMARY OF BACKGROUND DATA: Reconstruction of the anterior cervical spine in patients with a high risk of pseudoarthrosis may require the use of a vascularized bone graft (VBG)...
March 14, 2017: Spine
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