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https://www.readbyqxmd.com/read/28107242/an-in-vitro-biomechanical-study-evaluating-cervical-extension-plates-for-stabilizing-degenerated-adjacent-levels
#1
Kamran Majid, Mark Moldavsky, Saif Khalil, Manasa Gudipally
STUDY DESIGN: To evaluate the biomechanical stability of 2 extender plates in a human cervical cadaveric model. OBJECTIVES: To evaluate 2 extender plates, placed adjacent to initially implanted plates and to compare their biomechanical stability with traditional techniques. SUMMARY OF BACKGROUND DATA: Traditionally, adjacent level degeneration is surgically treated by removing the previously implanted plate and extending the instrumentation to the new degenerated level...
February 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28106949/atherectomy-using-a-solid-state-laser-at-355-nm-wavelength
#2
Amir Herzog, Grzegorz Oszkinis, David Planer, Krzysztof Ziaja, Łukasz Kruszyna, Michał Goran Stanisić, Damian Ziaja, Amiel A Ishaaya, Wacław Kuczmik
Peripheral arterial disease (PAD), caused by atherosclerotic processes, is allied with an increased risk of ischemic events, limb loss, and death. Recently, the use of a solid-state laser at 355 nm within a hybrid catheter was suggested for that purpose. In this work, short nanosecond pulses of a solid-state laser at 355 nm delivered through a hybrid catheter, composed of optical fibers and a blunt mechanical blade, are used to conduct a pre-clinical study and two clinical cases. The pre-clinical study consisted of an atherosclerotic calcified cadaveric leg and a porcine in vivo trial within the iliac artery, respectively...
January 20, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28106648/effect-of-concurrent-prolapse-surgery-on-stress-urinary-incontinence-outcomes-after-tvto
#3
David E Rapp, Mary Ellen Dolat, Joshua Wiley, Bruce Rowe
OBJECTIVES: A variety of pelvic organ prolapse (POP) surgeries are performed concomitant to midurethral sling (MUS) placement. It is unknown whether differing POP surgeries may affect stress urinary incontinence outcomes after MUS placement. METHODS: We performed a retrospective cohort analysis of patients undergoing TVT obturator system in conjunction with a variety of POP repair (cystocele with mesh graft, cystocele with cadaveric fascia, colpocleisis, and sacrocolpopexy)...
January 18, 2017: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/28104229/computational-analysis-of-the-safe-zone-for-the-antegrade-lag-screw-in-posterior-column-fixation-with-the-anterior-approach-in-acetabular-fracture-a-cadaveric-study
#4
Gu-Hee Jung, Yongkoo Lee, Joon-Woo Kim, Ji-Wan Kim
OBJECTIVE: The fluoroscopically-guided procedure of antegrade posterior lag screw in posterior column fixation through anterior approach is technique-dependent and requires an experienced surgeon. The purpose of this study was to establish the safe zone for the antegrade posterior lag screw by using computational analysis. METHOD: The virtual three-dimensional model of 178 hemi-pelvises was created from the CT data (DICOM format) by using Mimics(®) program, and were used to measure the safe zone of antegrade lag screw fixation on the inner table of the iliac wing, and the largest diameter of cylindrical implant inside safe zone...
January 13, 2017: Injury
https://www.readbyqxmd.com/read/28104162/hypoxia-inducible-factor-1%C3%AE-expression-in-kidney-transplant-biopsy-specimens-after-reperfusion-is-associated-with-early-recovery-of-graft-function-after-cadaveric-kidney-transplantation
#5
T Oda, T Ishimura, N Yokoyama, S Ogawa, H Miyake, M Fujisaw
BACKGROUND: Ischemia/reperfusion injury during kidney transplantation (KTx) delays allograft recovery. Hypoxia-inducible factor-1α (HIF-1α) is the key regulator of the protective response to ischemia/reperfusion injury. We evaluated the impact of the HIF-1α signaling pathway on allograft recovery during cadaveric KTx. METHODS: Between 1996 and 2015, 46 patients underwent cadaveric KTx. The expression levels of HIF-1α-related proteins, including phosphoinositide 3-kinase, phosphorylated (p)-Akt, p-mammalian target of rapamycin, p-Eukaryotic translation initiation factor 4E, p-S6 ribosomal protein, and HIF-1α, were immunohistochemically evaluated and semi-quantitatively scored in graft biopsy specimens after 1 hour of revascularization...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28104160/effect-of-gender-differences-on-transplant-kidney-function
#6
T Yoneda, Y Iemura, K Onishi, S Hori, Y Nakai, M Miyake, S Anai, K Torimoto, K Aoki, T Saka, N Tanaka, K Yoshida, K Fujimoto
BACKGROUND: Transplant kidney function is thought to be affected by sex differences, such as physical conditions including muscle volume, sex hormones, immune responses, and so forth. We examined the effect of sex differences on transplant kidney function. METHODS: The subjects were selected from kidney transplant recipients, who received kidney transplantation on our hospital between January 2000 and August 2015. Cadaveric donors and parent-child pairs with an age difference were excluded, then we included 47 recipients whose sex was different from the sex of the donor...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28104154/cost-analysis-of-transplantation-in-japan-performed-with-the-use-of-the-national-database
#7
T Kitazawa, K Matsumoto, S Fujita, K Seto, T Hasegawa
BACKGROUND: When assessing the cost of transplants in Japan, earlier studies have been limited to case series that investigated inpatient cost alone. Few studies have evaluated total cost, which includes inpatient, outpatient, and pharmaceutical costs, or compared costs before and after transplantation. Using the National Database of Health Insurance Claims and Specific Health Checkups of Japan (NDB), we investigated the total cost of major transplantation and contributing factors. METHODS: We analyzed the cost and complications of patients who underwent a cadaveric renal transplantation (CRT), living renal transplantation (LRT), living-donor liver transplantation (LDLT), allogeneic bone marrow transplantation, autologous bone marrow transplantation, allogeneic peripheral blood stem cell transplantation, or autologous peripheral blood stem cell transplantation (auto-PBSCT) from April 2009 to March 2010...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28104144/pancreas-transplantation-after-liver-transplantation-a-case-report
#8
J H Ryu, T B Lee, Y M Park, K H Yang, C W Chu, J H Lee, B H Choi
Our aim was to describe the clinical indications, surgical technique, and clinical outcomes of a pancreas transplantation, performed 4 years after liver transplantation, as treatment for new-onset, uncontrolled diabetes mellitus in a 53-year-old man. Liver transplantation was performed for end-stage liver disease secondary to hepatitis B virus infection and hepatocellular carcinoma. The patient had no history of diabetes prior to the liver transplantation. The decision to proceed with a pancreas transplantation was made when the patient's blood sugar levels could not be normalized despite insulin doses >100 IU/d...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28104126/analysis-of-donor-factors-for-non-heart-beating-donors-with-regard-to-cadaveric-kidney-transplantation-in-the-western-region-of-japan
#9
N Nakamura, M Tanaka, M Tsukamoto, Y Shimano, M Yasuhira, J Ashikari
BACKGROUND: Kidneys from non-heart-beating donors are thought to be marginal, and careful evaluation is required. Mass analyzed data are limited, and each transplant surgeon must evaluate these organs on the basis of their own experience. METHODS: We analyzed the data of 589 kidneys used for kidney transplantation from 304 non-heart-beating donors from January 2002 through December 2013 at the Japan Organ Transplant Network West Japan Division. The age of the donors, cause of death, and total ischemic time of more than 24 hours were factors that influenced the graft survival of the organs...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28104121/liver-failure-from-ultra-short-bowel-syndrome-on-the-intestinal-transplant-waiting-list-a-retrospective-study
#10
Y Noguchi, T Ueno, R Matsuura, T Kodama, K Deguchi, S Umeda, T Yamamichi, K Nakahata, M Zenitani, Y Takama, H Yamanaka, Y Tazuke, H Okuyama
BACKGROUND: Patients with intestinal failure (IF) are candidates for intestinal transplantation (ITx). In Japan, these patients have few opportunities to undergo cadaveric ITx because of low rates of organ donation. The donor criteria and recipient priority for ITx are still unknown. We reviewed our cases of IF to investigate which patients should be prioritized for ITx. METHODS: Patients with IF who were registered as candidates for cadaveric ITx between January 2010 and November 2015 in our institute were included in this retrospective study...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28103921/manually-defining-regions-of-interest-when-quantifying-paravertebral-muscles-fatty-infiltration-from-axial-magnetic-resonance-imaging-a-proposed-method-for-the-lumbar-spine-with-anatomical-cross-reference
#11
Rebecca J Crawford, Jon Cornwall, Rebecca Abbott, James M Elliott
BACKGROUND: There is increasing interest in paravertebral muscle composition as a potential prognostic and diagnostic element in lumbar spine health. As a consequence, it is becoming popular to use magnetic resonance imaging (MRI) to examine muscle volume and fatty infiltration in lumbar paravertebral muscles to assess both age-related change and their clinical relevance in low back pain (LBP). A variety of imaging methods exist for both measuring key variables (fat, muscle) and for defining regions of interest, making pooled comparisons between studies difficult and rendering post-production analysis of MRIs confusing...
January 19, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28102950/quantitative-impact-of-changes-in-marrow-cellularity-skeletal-size-and-bone-mineral-density-on-active-marrow-dosimetry-based-upon-a-reference-model
#12
Amy M Geyer, Bryan C Schwarz, Robert F Hobbs, George Sgouros, Wesley E Bolch
PURPOSE: The hematopoietically active tissues of skeletal bone marrow are a prime target for computational dosimetry given potential risks of leukemia and, at higher dose levels, acute marrow toxicity. The complex three-dimensional geometry of trabecular spongiosa, however, complicates schema for dose assessment in such a way that only a few reference skeletal models have been developed to date, and which are based upon microimaging of a limited number of cadaveric bone spongiosa cores...
January 2017: Medical Physics
https://www.readbyqxmd.com/read/28101803/lung-retransplantation-in-an-adult-13%C3%A2-years-after-single-lobar-transplant-in-childhood
#13
Seiichiro Sugimoto, Shinji Otani, Takashi Ohki, Takeshi Kurosaki, Kentaroh Miyoshi, Masaomi Yamane, Shinichiro Miyoshi, Takahiro Oto
Single living-donor lobar lung transplantation provides acceptable results for critically ill children; however, an additional lung transplantation may be required in the future as the recipient grows. We describe a case of successful lung retransplantation in a grown-up patient after single lobar lung transplantation in childhood. A 23-year-old man underwent bilateral cadaveric lung retransplantation for chronic lung allograft dysfunction 13 years after right single living-donor lobar transplantation for idiopathic pulmonary arterial hypertension performed at the age of 10 years...
January 18, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28099269/bilateral-leg-replantation-in-a-3-month-old-baby-after-a-knee-level-crush-amputation-a-2-year-follow-up
#14
Kresimir Bulic, Anko Antabak, Anto Dujmovic, Hrvoje Kisic, Mia Lorencin
We present a case of a successful bilateral leg replantation in a 3-month-old baby after a knee-level crush amputation with the loss of both knee joints. The legs were replanted after 4 hours of warm and an additional 2.5 and 3.5 hours of cold ischemia time. Both legs show motor and sensory reinnervation, without additional procedures performed on the right leg, and after a nerve reconstruction with cadaveric allografts on the left leg. Both replanted legs exhibit excellent bony and soft tissue growth. Two years after the injury, the patient is progressing well with rehabilitation, with favourable odds of having knee reconstructions performed at a later age...
January 18, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28099204/narrowing-in-on-the-anti-%C3%AE-cell-specific-t-cells-looking-where-the-action-is
#15
Sally C Kent, Jenny Aurielle B Babon
PURPOSE OF THE REVIEW: By necessity, the vast majority of information we have on autoreactive T cells in human type 1 diabetes (T1D) has come from the study of peripheral blood of donors with T1D. It is not clear how representative the peripheral autoreactive T-cell repertoire is of the autoreactive T cells infiltrating the islets in T1D. We will summarize and discuss what is known of the immunohistopathology of insulitis, the T-cell receptor repertoire expressed by islet-infiltrating T cells, and the autoreactivity and function of islet-infiltrating T cells in T1D...
January 17, 2017: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/28095870/comparison-of-compressive-forces-caused-by-various-cannulated-cancellous-screws-used-in-arthroscopic-ankle-arthrodesis
#16
Satoshi Kamijo, Tsukasa Kumai, Shogo Tanaka, Tsuyoshi Mano, Yasuhito Tanaka
BACKGROUND: When performing arthroscopic ankle arthrodesis for end-stage ankle arthritis, internal fixation is performed using bone screws after appropriate preparation. However, optimal characteristics of bone screws have not been examined in terms of pressure force. Objective comparisons of bone-screw performance may provide information on procedures for arthroscopic ankle arthrodesis. The study objectives were to determine whether it was possible to measure compressive force changes using the newly developed device and to infer all screw characteristics from measurement results when used in actual surgeries...
January 17, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28094764/neuromorphic-meets-neuromechanics-part-ii-the-role-of-fusimotor-drive
#17
Kian Jalaleddini, Chuanxin Niu, Suraj Chakravarthi Raja, Won Joon Sohn, Gerald Loeb, Terence Sanger, Francisco Valero-Cuevas
OBJECTIVE: We studied the fundamentals of muscle afferentation by building a neuro-mechano-morphic system actuating a cadaveric finger. This system is a faithful implementation of the stretch reflex circuitry. It allowed the systematic exploration of the effects of different fusimotor drives to the muscle spindle on the closed-loop stretch reflex response. APPROACH: As in Part I of this work, sensory neurons conveyed proprioceptive information from muscle spindles (with static and dynamic fusimotor drive) to populations of ��-motor neurons (with recruitment and rate coding properties)...
January 17, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28094424/ex-vivo-torsional-properties-of-a-2-5-mm-veterinary-interlocking-nail-system-in-canine-femurs-comparison-with-a-2-4-mm-limited-contact-bone-plate
#18
Aline S Macedo, Noel M M Moens, John Runciman, Tom W G Gibson, Bruno W Minto
OBJECTIVE: To evaluate the torsional properties of the Targon(®) Vet Nail System (TVS) in small canine femurs and to compare these properties to those of the 2.4 mm LC-DCP(®) plates. METHODS: Thirty-six cadaveric femurs were allocated to three groups (n = 12). In all bones, points just distal to the lesser trochanter and just proximal to the fabellae were marked and a midshaft transverse osteotomy was performed. Group 1: bones were fixed with the 2.5 mm TVS with the bolts applied at the pre-identified marks...
January 17, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/28094422/predicting-the-need-for-trochleoplasty-in-canine-patellar-luxation-using-pre-and-intra-operative-assessments-of-trochlear-depth
#19
Julie Skovgaard Orthmand Hansen, Ken Lindeblad, Lene Buelund, James Miles
OBJECTIVES: To evaluate the repeatability and reproducibility of ultrasonographic femoral trochlear depth measurements and to compare ultrasonographic and intra-operative evaluations of femoral trochlear depth for predictive value in selecting trochleoplasty. METHODS: Repeatability and reproducibility of an ultrasonographic protocol were tested in a preclinical cadaveric study. Clinical patients undergoing corrective surgery for patellar luxation were evaluated preoperatively with ultrasound and intra-operatively using a depth gauge...
January 17, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/28094421/biomechanical-evaluation-of-simulated-feline-patellar-fracture-repairs
#20
Mark Longley, Sorrel Langley-Hobbs, John Tarlton
OBJECTIVE: To investigate four techniques for stabilization of feline patellar fracture. METHODS: Feline cadaveric stifles with simulated patellar fracture were stabilized with one of four techniques: Group A - circumferential wire, group B - figure-of-eight wire, group C - combined figure-of-eight and circumferential wire, group D - pin and tension band wire. All repairs were subjected to a period of cyclic loading prior to load to failure testing. Experiments were recorded by video capture to determine load at failure and failure mode...
January 17, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
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