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https://www.readbyqxmd.com/read/29240567/theoretical-evaluation-and-experimental-validation-of-localized-therapeutic-hypothermia-application-to-preserve-residual-hearing-after-cochlear-implantation
#1
Ilmar Tamames, Curtis King, Chin-Yuh Huang, Fred F Telischi, Michael E Hoffer, Suhrud M Rajguru
OBJECTIVES: Cochlear implantation surgery has been shown to result in trauma to inner ear sensory structures, resulting in loss of residual hearing. Localized therapeutic hypothermia has been shown in clinical care to be a neuroprotective intervention. Previously, we have shown in an experimental model that localized hypothermia protects cochlear hair cells and residual hearing function against surgical and cochlear implantation trauma. Using experimental temperature measurements carried out in human cadaver temporal bones and a finite element model of the inner ear, the present study examined the temperature distribution of a custom-designed hypothermia delivery system in the human inner ear organs...
December 13, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29240202/effectiveness-of-two-different-lingual-flap-advancing-techniques-for-vertical-bone-augmentation-in-the-posterior-mandible-a-comparative-split-mouth-cadaver-study
#2
Istvan Urban, Hannes Traxler, Miguel Romero-Bustillos, Sandor Farkasdi, Barry Bartee, Gabor Baksa, Gustavo Avila-Ortiz
Vertical ridge augmentation in the posterior mandible is a technique-sensitive procedure that requires adequate anatomical knowledge and precise surgical skills to minimize the risk of complications. One of the most important but also challenging aspects of the surgical technique is proper flap management to allow for passive flap closure and reduce the chances of postoperative complications affecting deep anatomical spaces. This article presents a detailed description of a novel lingual flap advancement technique and its validation via a split-mouth, comparative study using a cadaver model...
January 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29239925/the-validity-of-training-endoscopic-sinus-and-skull-base-surgery-techniques-on-the-experimental-head-model
#3
Ranko Mladina, Neven Skitarelić, Cemal Cingi, Lei Chen, Nuray Bayar Muluk
OBJECTIVES: The aim of this study was to better understand the usual learning curve in acquiring endonasal endoscopic sinus and skull base surgery (ESSBS) techniques during the novice training on the lamb's head model. METHODS: Ten novices were asked to perform 10 bilateral dissections on the particular lamb's head each. The dissections were uniform, consisted of 10 well-defined steps, beginning from the simple removal of the inferior turbinate, and ending with more complicated procedures like cerebrospinal fluid leak repair, Draf 3 procedure for the frontal sinus and elevation of the nasal septal flap...
December 12, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29239853/averaged-head-phantoms-from-magnetic-resonance-images-of-korean-children-and-young-adults
#4
Miran Han, Ae-Kyoung Lee, Hyung-Do Choi, Yong Wook Jung, Jin Seo Park
Increased use of mobile phones raises concerns about the health risks of electromagnetic radiation. Phantom heads are routinely used for radiofrequency dosimetry simulations, and the purpose of this study was to construct averaged phantom heads for children and young adults. Using magnetic resonance images (MRI), sectioned cadaver images, and a hybrid approach, we initially built template phantoms representing 6-, 9-, 12-, 15-year-old children and adult. Our subsequent approach revised the template phantoms using 29 averaged items that were identified by averaging the MRI data from 500 children and young adults...
December 14, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29239252/single-bundle-vs-double-bundle-anatomical-reconstruction-of-the-thumb-ulnar-collateral-ligament-biomechanical-study
#5
Megan L Jimenez, Stephen D Hioe, Amir R Kachooei, Jonathan W Shearin, Christopher M Jones, Michael Rivlin
BACKGROUND: The goal of this study is to compare the biomechanical properties of anatomic (double-bundle) versus single-bundle reconstruction of the thumb metacarpophalangeal (MCP) joint ulnar collateral ligament (UCL) in a cadaveric model. METHODS: Twelve fresh frozen cadaver hands were randomly assigned to single- or double-bundle reconstruction groups using a palmaris longus autograft and tenodesis screws. Two blinded examiners performed mechanical testing and measurements using fluoroscopic imaging...
December 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29238630/hematoma-in-the-bucco-mandibular-space-first-case-report
#6
Joe Iwanaga, Charlotte Wilson, Emre Yilmaz, Cameron K Schmidt, Rod J Oskouian, R Shane Tubbs
Our previous studies based on intraoral dissection of fresh cadavers revealed that the fissure and loose connective tissues deep to the mucosa between the incisivus labii inferioris muscle and buccinator muscle form the entrance of the newly discovered bucco-mandibular space. To support the clinical significance of this space, we report the finding of a hematoma within this space in an adult fresh cadaver. Such a finding lends credence to studying the bucco-mandibular space and might help better understand the spread of some infections in the oral region...
October 12, 2017: Curēus
https://www.readbyqxmd.com/read/29237482/extraction-of-amplifiable-dna-from-embalmed-human-cadaver-tissue
#7
Lindsay Gielda, Stefanie Rigg
OBJECTIVE: The expansion of molecular techniques in medical diagnosis, forensics, and education requires the development of improved techniques of DNA extraction from fixed tissues. Cadaver tissues are not commonly used for genetic analysis due to DNA degradation resulting from the embalming fixation. Modification of existing techniques of tissue disruption combined with phenol-chloroform treatment was done to produce an efficient method of extracting amplifiable DNA of high quality and quantity from non-paraffin embedded embalmed cadaver tissue...
December 13, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29236126/-structural-damage-after-shoulder-dislocation-and-development-of-surgical-treatment-from-a-historical-perspective
#8
REVIEW
P Habermeyer, P Magosch
In the nineteenth century there was a high incidence of habitual shoulder instability caused by epileptic seizures and accompanied by therapeutic dilettantism, which led to socioeconomic problems in the working population. In the preradiography era the pathomechanism of shoulder dislocation was only known on the basis of cadaver studies and autopsy findings. The underlying structural disorders of habitual shoulder instability in the Bismarck era were published by Malgaigne, Broca and Hartmann. In1898 the first surgical reconstructive stabilization procedure for habitual shoulder dislocation was performed by Wilhelm Müller in Rostock...
December 13, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/29234558/length-change-of-the-short-external-rotators-of-the-hip-in-common-stretch-positions-a-cadaveric-study
#9
Ryan P McGovern, Benjamin R Kivlan, RobRoy L Martin
Background: Stretching of the deep rotators of the hip is commonly employed in patients with lumbosacral, sacroiliac, posterior hip, and buttock pain. There is limited research demonstrating the effectiveness of common stretching techniques on the short external rotators of the hip. Purpose: The objective of this study was to evaluate length change during stretching of the superior and inferior fibers of the piriformis, superior gemellus, obturator internus, and inferior gemellus...
December 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29229139/comparison-of-the-lund-and-browder-table-to-computed-tomography-scan-three-dimensional-surface-area-measurement-for-a-pediatric-cohort
#10
R Wolfgang Rumpf, William C L Stewart, Stephen K Martinez, Chandra Y Gerrard, Natalie L Adolphi, Rajan Thakkar, Alan Coleman, Adrian Rajab, William C Ray, Renata Fabia
BACKGROUND: Treating burns effectively requires accurately assessing the percentage of the total body surface area (%TBSA) affected by burns. Current methods for estimating %TBSA, such as Lund and Browder (L&B) tables, rely on historic body statistics. An increasingly obese population has been blamed for increasing errors in %TBSA estimates. However, this assumption has not been experimentally validated. We hypothesized that errors in %TBSA estimates using L&B were due to differences in the physical proportions of today's children compared with children in the early 1940s when the chart was developed and that these differences would appear as body mass index (BMI)-associated systematic errors in the L&B values versus actual body surface areas...
January 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29228508/cranial-backspatter-pattern-production-utilizing-human-cadavers
#11
Celestina Rossi, Lynne D Herold, Tom Bevel, Leslie McCauley, Stephanie Guadarrama
A backspatter pattern results from blood drops that travel retrograde to an applied external force. Historically, an array of animals and nonhuman objects have been used to create and study backspatter patterns. In this study, backspatter patterns captured on foam core targets that were placed 45.72 cm (18 in) behind the impact site (occipital area of the skull) were produced by cranial gunshots to human cadavers that were reinfused with fresh defibrinated bovine blood. These patterns were compared to the backspatter patterns produced by shooting blood-soaked sponges, a typical simulant used in controlled studies of backspatter pattern production and characteristics...
December 11, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/29226739/rutin-phospholipid-complex-in-polymer-matrix-for-long-term-delivery-of-rutin-via-skin-for-the-treatment-of-inflammatory-diseases
#12
Bhupen Kalita, Malay K Das
The drug with poor oral bioavailability necessitates the development of novel carrier for efficient drug delivery. This paper reports the rutin-phospholipid complex in polymer matrix for sustained delivery of rutin via the skin for the treatment of acute and chronic inflammatory diseases. Rutin in phospholipid complex (RNPs) are better soluble and permeable than the free rutin. The RNPs-loaded polymeric matrix patch with moderate adhesiveness was developed for convenient means of long term drug application on the skin...
December 9, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29226469/surgical-anatomy-of-the-superficial-temporal-artery-to-prevent-facial-nerve-injury-during-arterial-biopsy
#13
Kang-Jae Shin, Hyun Jin Shin, Shin-Hyo Lee, Ki-Seok Koh, Wu-Chul Song
PURPOSE: To investigate the topographical relationship between the frontal branch of the superficial temporal artery (FSTA) and the temporal branch of the facial nerve (TFN) with the aim of preventing nerve injury during FSTA biopsy. METHODS: Fifty-seven hemifaces of 33 cadavers were dissected. Vertical lines drawn to the lateral orbital margin (LOM) and the superior root of the helix were used as the anterior and posterior reference positions, respectively. Horizontal lines drawn through the supraorbital margin and lateral canthus were used as the superior and inferior reference points, respectively...
December 11, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/29225009/anatomic-implications-of-lesser-trochanterplasty
#14
Onur Hapa, Nihat Demirhan Demirkıran, Buğra Hüsemoğlu, Mete Edizer, Hasan Havitçioğlu
OBJECTIVE: The aim of this study was to measure the area of iliopsoas tendon attachment and the distance of sciatic nerve, medial circumflex femoral artery (MCFA) and quadratus muscle to lesser trochanter tip, before and after 5, 10, 15 mm depth excision of lesser trochanter. METHODS: A total 15 hips of 8 adult male cadavers were evaluated. Distances between lesser trochanter tip, sciatic nerve, the lower edge of quadratus muscle and MCFA; length and width of quadratus muscle insertion; area of iliopsoas muscle and quadratus muscle insertion was measured before and after sequential 5,10 and 15 mm depth trochanterplasties using 5 mm wide burr parallel to the posterior cortex...
December 7, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/29224992/experience-influences-the-agreement-and-reliability-of-tibial-component-positioning-in-total-knee-arthroplasty
#15
Derek F Amanatullah, Graham D Pallante, Matthieu P Ollivier, Alexander W Hooke, Matthew P Abdel, Michael J Taunton
BACKGROUND: Poor rotation of the tibial component is associated with unfavorable total knee arthroplasty outcomes. Some surgeons utilize the tibial tubercle (TT method), while others utilize the femoral cam (Box method) as a rotational landmark during total knee arthroplasty. Our purpose is to determine the reproducibility of 2 methods for establishing intra-operative tibial component rotation, while also comparing the effect of level of training. METHODS: Twelve surgeons positioned and sized a symmetric tibial component on 7 cadaver knees...
November 13, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29224268/-applied-anatomy-study-of-posterior-approach-via-sacrectomy-for-reaching-the-deep-intrapelvic-sacral-plexus
#16
F Li, S F Wang, P C Li, Y H Xue
Objective: To observe the possibility of posterior approach via sacrectomy for reaching intrapelvic sacral plexus and expose the deep intrapelvic origin of sciatic nerve from sacral plexus in order to perform nerve graft. Methods: Five adult cadaver specimens were used in the study with prone position in May 2012. Cut off the gluteus maximus along the origins and lift to the lateral side, the piriformis was lay beneath. The sciatic nerve and the inferior gluteal nerve pierced from the infrapiriformis foramen in the operative field...
December 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29223688/comparison-of-color-flow-with-standard-ultrasound-for-the-detection-of-endotracheal-intubation
#17
Michael Gottlieb, Dallas Holladay, Anthony Serici, Shital Shah, Damali Nakitende
INTRODUCTION: Intubation is a frequently performed procedure in emergency medicine that is associated with significant morbidity and mortality when unrecognized esophageal intubation occurs. However, it may be difficult to visualize the endotracheal tube (ETT) in some patients. This study assessed whether the addition of color Doppler was able to improve the ability to visualize the ETT location. METHODS: This study was performed in a cadaver lab using three different cadavers chosen to represent varying neck circumference...
November 28, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29222730/morphology-and-morphometry-of-lacrimal-drainage-system-in-relation-to-bony-landmarks-in-caucasian-adults-a-cadaveric-study
#18
Mohammad Javed Ali, Martin Schicht, Friedrich Paulsen
PURPOSE: The objective of this study is to examine the morphometry of the lacrimal drainage system with reference to bony landmarks in the vicinity. METHODS: Twenty midsaggitalized heads obtained from sixteen preserved cadavers were studied. Measurements involved detailed morphometry of anterior and posterior lacrimal crests, bony lacrimal sac fossa, entrance and length of the bony nasolacrimal duct (NLD), attachment of Horner's muscle, and characteristics of the inferior meatal opening of the NLD...
December 8, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/29222673/ureteric-entrapment-in-sacroiliac-joint-causing-hydroureter-and-ipsilateral-kidney-hypertrophy
#19
Yurie Otsuru, Chuichi Kondo, Shohei Hara, Hideo Takahashi, Kenjiro Matsuno
A unilateral megaureter was found in an elderly female cadaver during routine dissection. The left proximal ureter, which was thick and convolute, descended and entered into the pelvic cavity, where the distal ureter was attached to the posterior pelvic wall at the inlet level. Removal of connective tissue surrounding the attached region revealed ureteric entrapment in the sacroiliac joint. The ipsilateral kidney, from which the megaureter originated, showed no pelvicalyceal dilatation. In contrast, the left kidney was enlarged, weighing 24% more than the right kidney...
December 8, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/29222564/primary-blast-brain-injury-mechanisms-current-knowledge-limitations-and-future-directions
#20
Elizabeth Fievisohn, Zachary Bailey, Allison Guettler, Pamela VandeVord
Mild blast traumatic brain injury (bTBI) accounts for the majority of brain injury in United States service members and other military personnel worldwide. The mechanisms of primary blast brain injury continue to be disputed with little evidence to support one or a combination of theories. The main hypotheses addressed in this review are blast wave transmission through the skull orifices, direct cranial transmission, skull flexure dynamics, thoracic surge, acceleration, and cavitation. Each possible mechanism is discussed using available literature with the goal of focusing research efforts to address limitations and challenges that exist in blast injury research...
December 9, 2017: Journal of Biomechanical Engineering
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