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cadaver dissection

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https://www.readbyqxmd.com/read/28632564/accuracy-of-percutaneous-pedicle-screw-placement-does-training-level-matter
#1
Evan O Baird, Steven J McAnany, Samuel Overley, Branko Skovrlj, Javier Z Guzman, Sheeraz A Qureshi
STUDY DESIGN: In vitro human cadaveric surgical technique study. OBJECTIVE: To assess the accuracy of percutaneous pedicle screw placement in a human cadaveric model using standard fluoroscopic guidance technique, compared across varying levels of experience. SUMMARY OF BACKGROUND DATA: The current literature varies widely in the reported frequency of facet violation during placement of percutaneous pedicle screws. However, as of yet there are no studies examining the effect that training level has on accuracy of placement...
July 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28623105/transfer-of-the-lateral-antebrachial-cutaneous-nerve-to-the-dorsal-branch-of-the-ulnar-nerve-without-nerve-graft-in-case-of-lower-brachial-plexus-injuries-anatomical-and-feasibility-study
#2
J Pauchot, U Assouline, S Valmary-Degano, B Constantinou, L Obert, D Lepage
In the context of lower (C8-T1) brachial plexus injury, transfer of the lateral antebrachial cutaneous nerve (LABCN) to the dorsal branch of the ulnar nerve (DBUN) with an interposed sural nerve graft has been proposed to restore sensitivity on the ulnar side of the hand. The purpose of this study was to assess the feasibility of performing this transfer directly - without interposition of a nerve graft - by intraneural dissection of the DBUN. An anatomical study was performed with 20 upper limbs from adult human cadavers...
June 13, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28619496/injury-to-the-lumbar-plexus-and-its-branches-following-lateral-fusion-procedures-a-cadaver-study
#3
Peter Grunert, Doniel Drazin, Joe Iwanaga, Cameron Schmidt, Fernando Alonso, Marc Moisi, Jens R Chapman, Rod J Oskouian, R Shane Tubbs
INTRODUCTION: Neurological deficits from lumbar plexus nerve injuries commonly occur in patients undergoing lateral approaches. However, it is not yet clear what types of injury occur, where anatomically they are located, or what mechanism causes them. We aimed, to study (a) the topographic anatomy of lumbar plexus nerves and their injuries in human cadavers after lateral transpsoas approaches to the lumbar spine, (b) the structural morphology of those injuries, (c) the topographic anatomy of the lumbar plexus throughout the mediolateral approach corridor...
June 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28616759/is-dual-semitendinosus-allograft-stronger-than-turndown-for-achilles-tendon-reconstruction-an-in-vitro-analysis
#4
Michael C Aynardi, Lara C Atwater, Roshan Melvani, Brent G Parks, Adrian G Paez, Stuart D Miller
BACKGROUND: Large Achilles tendon defects pose a treatment challenge. The standard treatment with a turndown flap requires a large extensile incision, puts the sural nerve at risk, and demands slow, careful rehabilitation. Dual allograft semitendinosus reconstruction is a new clinical alternative that has the theoretical advantages of a smaller incision, less dissection, and a stronger construct that may allow for faster rehabilitation. QUESTIONS/PURPOSES: In a cadaver biomechanical model, we compared the dual allograft semitendinosus reconstruction with the myofascial turndown in terms of (1) mechanical strength and resistance to deformation and (2) failure mechanisms in reconstruction of large segmental Achilles defects...
June 14, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28615814/an-anatomical-study-for-localisation-of-zygomatic-branch-of-facial-nerve-and-masseteric-nerve-an-aid-to-nerve-coaptation-for-facial-reanimation-surgery-a-cadaver-based-study-in-eastern-india
#5
Ratnadeep Poddar, Alipta Bhattacharya, Iman Sinha, Asis Kumar Ghosal
CONTEXT: In cases of chronic facial palsy, where direct neurotisation is possible, ipsilateral masseteric nerve is a very suitable motor donor. We have tried to specifically locate the masseteric nerve for this purpose. AIMS: Describing an approach of localisation and exposure of both the zygomatic branch of Facial nerve and the nerve to masseter, with respect to a soft tissue reference point over face. SETTINGS AND DESIGN: Observational cross sectional study, conducted on 12 fresh cadavers...
January 2017: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/28615807/soft-embalming-of-cadavers-for-training-purposes-optimising-for-long-term-use-in-tropical-weather
#6
Raghuveer Reddy, Subramania Iyer, Minnie Pillay, Krishnakumar Thankappan, Janarthanan Ramu
BACKGROUND: Surgical and anatomical training has been found to be most optimally simulated in a cadaver than any other available methods. Soft embalming methods have made the bodies more 'lifelike' and better suited for training. The widely accepted soft embalming techniques, including Thiel embalming, are designed for temperate climates. Their use in tropical locations has been found to be associated with poor short-term and long-term preservation of the bodies. In fact, adequate reports from tropical countries on effective methods for soft embalming are lacking...
January 2017: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/28614090/three-dimensional-topography-of-the-supratrochlear-nerve-with-reference-to-the-lacrimal-caruncle-and-its-danger-zone-in-asians
#7
Young-Chun Gil, Shin-Hyo Lee, Kang-Jae Shin, Wu-Chul Song, Ki-Seok Koh, Hyun Jin Shin
BACKGROUND: The supratrochlear nerve (STN) is relatively superficial and therefore vulnerable to iatrogenic injury. OBJECTIVE: To elucidate the course of STN with reference to the lacrimal caruncle, with the aim of preventing nerve injury during surgery in the forehead region. MATERIALS AND METHODS: Thirty-four hemifaces from 18 Korean cadavers were dissected. The vertical line through the apex of lacrimal caruncle and the horizontal line through the supraorbital margin were used as horizontal and vertical reference lines, respectively...
June 12, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28608954/experience-from-an-optional-dissection-course-in-a-clinically-orientated-concept-to-complement-system-based-anatomy-in-a-reformed-curriculum
#8
Elisabeth Eppler, Steffen Serowy, Karl Link, Luis Filgueira
Profound anatomical knowledge is the basis for modern demands in medicine and surgery, but many countries worldwide including Australia and New Zealand have discontinued offering dissection courses to medical and dental students during the past decades. This educational project done in Australia aimed at enhancing basic and advanced anatomy teaching by engaging a sub-group of second-year undergraduate students of a compulsory prosection- and model-based anatomy course (n = 54/170) in an optional multimodal course, which should easily articulate with a vertical curriculum...
June 13, 2017: Anatomical Sciences Education
https://www.readbyqxmd.com/read/28608859/residua-of-thymus-in-the-mediastinum-clinical-aspects-cadaveric-study
#9
Ewa Mizia, Wiesława Klimek-Piotrowska, Jarosław Kużdżał, Tomasz Konopka, Monika Lis, Juliusz Pankowski, Artur Pasternak, Jarosław Zawiliński, Andrzej Wrona
The main goal of this study was to investigate possible residua of thymic tissue in 100 adult cadavers with no thoracic pathology known before, by dissection of standard locations of thymic tissue in perithyroid, periaortic, peritracheal and retrotracheal spaces, as well as areas located next to the course of phrenic, vagus and left recurrent laryngeal nerves. Thus obtained tissue samples were studied by two pathologists independently. The remnants of the thymic tissue were found in 61 out of 100 specimens studied...
2017: Folia Medica Cracoviensia
https://www.readbyqxmd.com/read/28608239/transnasal-endoscopic-ultrasound-guided-reduction-of-maxillary-sinus-wall-fracture
#10
Hyung Chae Yang, Young Yoon Kim, Seoung Min Jin, Hyesu You, Jung Hyun Han, Kwang Il Nam
Surgical morbidity from open reduction and internal fixation (ORIF) of maxillary sinus wall fracture often surpasses the benefits of ORIF. Hence, the authors devised transnasal endoscopic-assisted reduction of maxillary sinus wall fracture (TERM) without internal fixation as a minimally invasive surgery for maxillary sinus wall fracture. The purpose of this study was to investigate the feasibility of TERM in cadavers and patients. Six cadavers were dissected to evaluate the feasibility of TERM. In addition, 20 patients with maxillary sinus wall fractures who underwent TERM in a tertiary hospital from August of 2013 to December of 2015 were enrolled in this study...
June 12, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28608130/evaluation-of-fibular-muscles-and-prevalence-of-accessory-fibular-muscles-on-fetal-cadavers
#11
Soner Albay, Busra Candan
PURPOSE: The purpose of this study was to determine clinical importance and morphology of the fibularis longus, brevis, tertius muscles (presented as fibular muscles in this study), and prevalence of accessory fibular muscles (AFM) on fetal cadavers. MATERIALS AND METHODS: In this study, 200 limbs from 100 embalmed fetuses (54 male and 46 female) were studied. Morphology of fibular muscles and the presence of AFM were observed through dissection on fetal legs bilaterally...
June 12, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28604497/potential-mechanism-for-some-post-operative-c5-palsies-an-anatomical-study
#12
Fernando Alonso, Vlad Voin, Joe Iwanaga, David Hanscom, Jens R Chapman, Rod J Oskouian, Marios Loukas, R Shane Tubbs
STUDY DESIGN: Anatomical Study. OBJECTIVE: Determine if shoulder depression (e.g., taping the shoulders) might result in C5 nerve traction and subsequent injury. SUMMARY OF BACKGROUND DATA: Postoperative C5 nerve palsy is a recognized entity that is still often enigmatic. Inferior shoulder depression is usually employed to assist with surgical visualization during cervical spine procedures. METHODS: In the supine position, ten adult fresh frozen human cadavers underwent dissection of the spinal cord and its adjacent dorsal, ventral roots and spinal nerves from C4 to T1...
June 9, 2017: Spine
https://www.readbyqxmd.com/read/28593582/morphological-size-evaluation-of-the-mid-substance-insertion-areas-and-the-fan-like-extension-fibers-in-the-femoral-acl-footprint
#13
Makoto Suruga, Takashi Horaguchi, Takanori Iriuchishima, Yoshiyuki Yahagi, Genki Iwama, Yasuaki Tokuhashi, Shin Aizawa
PURPOSE: The purpose of this study was to evaluate the detailed anatomy of the femoral anterior cruciate ligament (ACL) insertion site, with special attention given to the morphology of the mid-substance insertion areas and the fan-like extension fibers. METHODS: Twenty-three non-paired human cadaver knees were used (7 Males, 16 Females, median age 83, range 69-96). All soft tissues around the knee were resected except the ligaments. The ACL was divided into antero-medial (AM) and postero-lateral (PL) bundles according to the difference in macroscopic tension patterns...
June 7, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28593429/ultrasound-imaging-of-the-thenar-motor-branch-of-the-median-nerve-a-cadaveric-study
#14
David Petrover, Jonathan Bellity, Marie Vigan, Remy Nizard, Antoine Hakime
INTRODUCTION: Anatomic variations of the median nerve (MN) increase the risk of iatrogenic injury during carpal tunnel release surgery. We investigated whether high-frequency ultrasonography could identify anatomic variations of the MN and its thenar motor branch (MBMN) in the carpal tunnel. METHODS: For each volar wrist of healthy non-embalmed cadavers, the type of MN variant (Lanz classification), course and orientation of the MBMN, and presence of hypertrophic muscles were scored by 18-MHz ultrasound and then by dissection...
June 7, 2017: European Radiology
https://www.readbyqxmd.com/read/28593340/a-previously-unclassified-variant-of-sternalis-muscle
#15
Sarah N Dudgeon, Kayla M Marcotte, Glenn M Fox, B Kathleen Alsup
PURPOSE: We propose an addition to the Snosek et al. classification to include a subtype variant of sternalis muscle: mixed type and triple subtype. METHODS: Dissection of the anterior thorax of a 96-year-old female cadaver revealed bilateral sternalis muscles with an undocumented variant of the right sternalis muscle. RESULTS: The left sternalis muscle presented as a simple type-left single using the Snosek et al. classification scheme. The right sternalis muscle revealed a previously undocumented classification type...
June 7, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28589650/validity-and-reliability-of-a-structured-light-3d-scanner-and-an-ultrasound-imaging-system-for-measurements-of-facial-skin-thickness
#16
Kang-Woo Lee, Sang-Hwan Kim, Young-Chun Gil, Kyung-Seok Hu, Hee-Jin Kim
INTRODUCTION: Three-dimensional (3 D)-scanning-based morphological studies of the face are commonly included in various clinical procedures. This study evaluated validity and reliability of a 3 D scanning system by comparing the ultrasound (US) imaging system versus the direct measurement of facial skin. MATERIALS AND METHODS: The facial skin thickness at 19 landmarks was measured using the three different methods in 10 embalmed adult Korean cadavers. Skin thickness was first measured using the ultrasound device, then 3 D scanning of the facial skin surface was performed...
June 7, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28584749/accessory-flexor-carpi-ulnaris-and-bilaterally-variant-vascular-anatomy-of-upper-limb-an-unusual-presentation
#17
Sulochana Sakthivel, Suman Verma
We report a rare combination of variations in the upper limb of a human cadaver. Accessory flexor carpi ulnaris with absent palmaris longus was observed in the left forearm during routine dissection of a male cadaver. Variant vascular pattern was observed bilaterally. Brachial artery bifurcated at a higher level. Ulnar artery gave rise to persistent median artery (PMA) which pierced the median nerve and accompanied it deep into flexor retinaculum to terminate as two common palmar digital arteries. Superficial palmar arch was not formed as the PMA did not anastomose with either the radial or ulnar artery...
April 2017: International Journal of Applied and Basic Medical Research
https://www.readbyqxmd.com/read/28583461/repair-of-v2-vertebral-artery-injuries-sustained-during-anterior-cervical-discectomy
#18
Evgenii Belykh, David S Xu, Kaan Yağmurlu, Ting Lei, Vadim A Byvaltsev, Curtis A Dickman, Mark C Preul, Peter Nakaji
BACKGROUND: The V2 segment of the vertebral artery (VA) typically runs through the transverse foramen of C2-C6. V2 injury may occur during anterior approaches to the cervical spine and can cause significant morbidity. We aimed to describe landmarks and microsurgical V2 repair techniques through the standard anterolateral cervical discectomy approach. METHODS: Five silicone-injected cadaveric heads (necks-C7) were dissected bilaterally. An anterolateral approach with C3-4, C4-5, and C5-6 discectomies and an ipsilateral VA injury were simulated...
June 2, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28581279/improved-software-to-browse-the-serial-medical-images-for-learning
#19
Koojoo Kwon, Min Suk Chung, Jin Seo Park, Byeong Seok Shin, Beom Sun Chung
The thousands of serial images used for medical pedagogy cannot be included in a printed book; they also cannot be efficiently handled by ordinary image viewer software. The purpose of this study was to provide browsing software to grasp serial medical images efficiently. The primary function of the newly programmed software was to select images using 3 types of interfaces: buttons or a horizontal scroll bar, a vertical scroll bar, and a checkbox. The secondary function was to show the names of the structures that had been outlined on the images...
July 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28575538/willingness-toward-organ-and-body-donation-among-anatomy-professors-and-students-in-mexico
#20
Alejandro Quiroga-Garza, Cynthia Guadalupe Reyes-Hernández, Pablo Patricio Zarate-Garza, Claudia Nallely Esparza-Hernández, Jorge Gutierrez-de la O, David de la Fuente-Villarreal, Rodrigo Enrique Elizondo-Omaña, Santos Guzman-Lopez
Most anatomists agree that cadaver dissection serves as a superior teaching tool in human anatomy education. However, attitudes toward body donation vary widely between different individuals. A questionnaire was developed to determine the attitudes toward body and organ donation among those who learn the most from cadavers: medical students, medical student teaching assistants, medical students involved in research, and anatomy professors. A cross-sectional, prospective study was designed in which the questionnaire was distributed among first-year human anatomy students before undertaking cadaver dissection at the beginning of the semester, and then again after a commemoration service at the end of the course...
June 2, 2017: Anatomical Sciences Education
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