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cadaver dissection

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https://www.readbyqxmd.com/read/28338438/learning-brain-aneurysm-microsurgical-skills-in-a-human-placenta-model-predictive-validity
#1
Marcelo Magaldi Ribeiro de Oliveira, Carlos Eduardo Ferrarez, Taise Mosso Ramos, Jose Augusto Malheiros, Arthur Nicolato, Carla Jorge Machado, Mauro Tostes Ferreira, Fellype Borges de Oliveira, Cecília Félix Penido Mendes de Sousa, Pollyana Helena Vieira Costa, Sebastiao Gusmao, Giuseppe Lanzino, Rolando Del Maestro
OBJECTIVE Surgery for brain aneurysms is technically demanding. In recent years, the process to learn the technical skills necessary for these challenging procedures has been affected by a decrease in the number of surgical cases available and progressive restrictions on resident training hours. To overcome these limitations, surgical simulators such as cadaver heads and human placenta models have been developed. However, the effectiveness of these models in improving technical skills is unknown. This study assessed concurrent and predictive validity of brain aneurysm surgery simulation in a human placenta model compared with a "live" human brain cadaveric model...
March 24, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28333253/resident-and-program-director-perceptions-of-aesthetic-training-in-plastic-surgery-residency-an-update
#2
Ahmed M Hashem, Joshua T Waltzman, Gehaan F D'Souza, Cagri Cakmakoglu, Kayshap Komarraju Tadisina, Jeffrey M Kenkel, James E Zins
Background: This is the third survey exploring the quality of cosmetic training in plastic surgery residency. We focused on determining: (1) the applied modalities and extent of resident exposure; and (2) resident confidence in performing variable cosmetic procedures. Objectives: To analyze trends in resident exposure and confidence in aesthetic plastic surgery procedures from the standpoint of program directors (PDs) and residents. Methods: The survey was developed and e-mailed to 424 residents enrolled in the ASAPS Residents Program and 95 PDs...
March 3, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28333197/bilayered-structure-of-the-superficial-facial-fascia
#3
Hyun Gu Kang, Kwan-Hyun Youn, In-Beom Kim, Yong Seok Nam
Background: The superficial facial fascia comprises the superficial musculoaponeurotic system (SMAS) and the temporoparietal fascia (TPF) and is regarded as a continuous monolayer. However, some evidence indicates that the superficial facial fascia consists of 2 layers in specific areas. Objectives: The authors evaluated the superficial facial fascia for bilayered regions. Methods: Twenty fresh cadavers (40 hemifaces) were dissected to observe the superficial facial fascia...
February 20, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28324130/the-oblique-popliteal-ligament-an-anatomic-and-mri-investigation
#4
Mandy Hedderwick, Mark D Stringer, Liam McRedmond, Grant R Meikle, Stephanie J Woodley
PURPOSE: Despite being the largest ligament on the posterior aspect of the knee, relatively little is known about the normal morphology of the oblique popliteal ligament (OPL). The aim of this study was to investigate the detailed anatomy of the OPL in cadavers and healthy volunteers. METHODS: The posterior knee was investigated in 25 cadaver lower limbs (mean age 76 ± 9.5 years; 7 men) by dissection, histology, and serial plastination and in 14 healthy individuals (mean age 23 ± 3...
March 21, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28322287/anatomy-of-the-retrohepatic-tunnel-in-a-chinese-population-and-its-clinical-application-in-liver-surgery
#5
Wang Zheng, Ding Zi-Hai, Zhou Jie, Zhong Shi-Zhen, Lin Jian-Hua, Lin Yi-Xiong
Liver hanging maneuver (LHM) is an important technique in liver surgery. However, applied anatomy of the retrohepatic tunnel for the surgical approach in Chinese population needs further study. In this study, to explore the basic anatomy of retrohepatic tunnel and its clinical application in a Chinese population, a total of 32 formalin-fixed cadavers were dissected, related parameters were measured, and their clinical applications were discussed. The length of the retrohepatic tunnel was (60.6 ± 9.9) mm...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28322125/anatomy-specific-virtual-reality-simulation-in-temporal-bone-dissection
#6
Garrett D Locketz, Justin T Lui, Sonny Chan, Kenneth Salisbury, Joseph C Dort, Patricia Youngblood, Nikolas H Blevins
Objective To evaluate the effect of anatomy-specific virtual reality (VR) surgical rehearsal on surgeon confidence and temporal bone dissection performance. Study Design Prospective pre- and poststudy of a novel virtual surgical rehearsal platform. Setting Academic otolaryngology-head and neck surgery residency training programs. Subjects and Methods Sixteen otolaryngology-head and neck surgery residents from 2 North American training institutions were recruited. Surveys were administered to assess subjects' baseline confidence in performing 12 subtasks of cortical mastoidectomy with facial recess...
March 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28321940/anatomy-of-psoas-muscle-innervation-cadaveric-study
#7
Mark A Mahan, Luke E Sanders, Jian Guan, Andrew T Dailey, William Taylor, David A Morton
INTRODUCTION: Hip flexion weakness is relatively common after lateral transpsoas surgery. Persistent weakness may result from injury to the innervation of the psoas major muscles (PMMs); however, anatomical texts have conflicting descriptions of this innervation, and the branching pattern of the nerves within the psoas major, particularly relative to vertebral anatomy, has not been described. The authors dissected human cadavers to describe the branching pattern of nerves supplying the PMMs...
March 21, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28321472/feasibility-and-benefits-of-the-ewe-as-a-model-for-vaginal-surgery-training
#8
Yohan Kerbage, Géraldine Giraudet, Chrystèle Rubod, Charles Garabedian, Géraldine Rivaux, Michel Cosson
INTRODUCTION AND HYPOTHESIS: The objective was to evaluate the ewe as an animal model for teaching and training in vaginal surgery. METHODS: Twenty-nine postgraduate surgeons attended a training course on vaginal prolapse surgery. After a review of human and sheep anatomy, the participants performed transvaginal meshes, vaginal hysterectomy, SSLF (Richter), and OAS repair in ewes and human cadavers. Participants completed questionnaires on the whole course. RESULTS: Questionnaires showed the significant superiority of ewes over human cadavers for all items evaluated regarding surgical dissections...
March 20, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28318074/perforating-and-deep-lymphatic-vessels-in-the-knee-region-an-anatomical-study-and-clinical-implications
#9
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/28314939/triticeal-cartilage-the-forgotten-cartilage
#10
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/28299444/the-ethmoidal-arteries-a-cadaveric-study-based-on-cone-beam-computed-tomography-and-endoscopic-dissection
#11
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/28296816/low-dose-radiation-3d-intraoperative-imaging-how-low-can-we-go-an-o-arm-%C3%A2-ct-scan-cadaveric-study
#12
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
#13
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
#14
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
https://www.readbyqxmd.com/read/28293514/platysma-motor-nerve-transfer-for-restoring-marginal-mandibular-nerve-function
#15
Andres Rodriguez-Lorenzo, David Jensson, Wolfgang J Weninger, Melanie Schmid, Stefan Meng, Chieh-Han John Tzou
BACKGROUND: Injuries of the marginal mandibular nerve (MMN) of the facial nerve result in paralysis of the lower lip muscle depressors and an asymmetrical smile. Nerve reconstruction, when possible, is the method of choice; however, in cases of long nerve gaps or delayed nerve reconstruction, conventional nerve repairs may be difficult to perform or may provide suboptimal outcomes. Herein, we investigate the anatomical technical feasibility of transfer of the platysma motor nerve (PMN) to the MMN for restoration of lower lip function, and we present a clinical case where this nerve transfer was successfully performed...
December 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28291210/-long-association-tracts-of-the-human-white-matter-an-analysis-of-18-hemisphere-dissections-and-in-vivo-hardi-csd-tractography
#16
S A Goryainov, A V Kondrashov, M F Gol'dberg, A I Batalov, R A Sufianov, N E Zakharova, I N Pronin, D A Gol'bin, V Yu Zhukov, G F Dobrovol'sky, S Yu Shelyakin, V N Vorob'ev, S S Dadykin, A A Potapov
BACKGROUND: Anatomy of the conduction tracts of the cerebral cortex has been studied for a long time. Invention of diffusion tensor tractography renewed interest in this subject. The objectives of this work were to develop and improve protocols for dissection of the long association tracts of the human brain with studying the features of their segmentation, topography, and variability, compare the obtained data with the MR tractography data, and prepare for further clinical and anatomical studies...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28291184/lateral-radiographic-landmarks-for-acl-and-lcl-footprint-origins-during-all-epiphyseal-femoral-drilling-in-skeletally-immature-knees
#17
Kevin G Shea, Peter C Cannamela, Peter D Fabricant, E Bailey Terhune, John D Polousky, Matthew D Milewski, Theodore J Ganley, Allen F Anderson
BACKGROUND: This study was conducted to evaluate the spatial relationship of the anterior cruciate ligament (ACL) and lateral collateral ligament (LCL) femoral footprint origins in knee specimens from skeletally immature donors as viewed on lateral radiographs. METHODS: Fourteen cadaver specimens of skeletally immature knees from children between 7 and 11 years old at the time of death were examined through gross dissection. Metallic pins were placed at the center of the ACL and LCL femoral footprints, and computed tomography (CT) scans were performed...
March 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28289635/accuracy-of-ultrasound-guided-and-non-ultrasound-guided-botulinum-toxin-injection-into-cadaver-salivary-glands
#18
Jae In So, Dae Heon Song, Joo Hyun Park, Eunseok Choi, Jung Yoon Yoon, Yeonji Yoo, Myung Eun Chung
OBJECTIVE: To compare the accuracy of ultrasound (US)-guided and non-US-guided botulinum toxin (BTX) injection into the salivary glands (parotid and submandibular glands) of cadavers. METHODS: Two rehabilitation physician injected dye into three sites in the salivary glands (two sites in the parotid gland and one site in the submandibular gland) on one side of each cadaver (one was injected on the right side, while the other was injected on the left side), using either a non-US-guided injection procedure based on superficial landmarks or a US-guided procedure...
February 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28283881/a-case-of-double-inferior-vena-cava-with-renal-ovarian-and-iliac-vein-variation
#19
Taro Ito, Yayoi Ikeda
We encountered a rare case of an anatomic variant of inferior vena cava (IVC) duplication with renal, ovarian and iliac vein variation in an 81-year-old Japanese female cadaver during a student dissection course of anatomy at Aichi Gakuin University School of Dentistry. The two IVCs ran upwards bilaterally to the abdominal aorta. The left IVC joined with the left renal vein (RV) to form a common trunk that crossed anterior to the aorta and ended at the right IVC. We detected a vein [interiliac vein (IiV)] connecting the two IVCs at the level of the aortic bifurcation...
March 10, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28281725/langer-s-axillary-arch-a-rare-variant-and-prevalence-among-caucasians
#20
Mohammed Turki, Philip Adds
During the dissection of a 79-year-old Caucasian female cadaver, a variant of Langer's axillary arch was found unilaterally in the left axilla. While Langer's axillary arches are not uncommon, this particular variant, attaching to the biceps brachii, is much rarer with a reported prevalence of only 0.25%. The case reported here, however, is only the third example of a Langer's axillary arch that has been found in the last 14 years in the Dissecting Room at St George's, University of London, giving it an overall prevalence of approximately 1...
March 10, 2017: Folia Morphologica (Warsz)
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