77 results match your criteria fresh clamped

First Report of Fomitopsis meliae Causing Brown Wood Rot on Living Lemon Trees in Arizona and California.

Plant Dis 2021 Mar 5. Epub 2021 Mar 5.

University of Arizona, School of Plant Sciences, Yuma, Arizona, United States;

Arizona is one of the largest producers of premium lemons for fresh market in the world. In 2018, 54,000 metric tons of lemons were produced on more than 7,300 acres. In recent years, wood rot diseases have become increasingly important in desert citrus production, with an incidence rate of 70 to 100% in some lemon orchards in Yuma, and lower rates in lemon orchards in the California desert. Read More

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Biomechanical comparison of semirigid junctional fixation techniques to prevent proximal junctional failure after thoracolumbar adult spinal deformity correction.

Spine J 2021 Jan 23. Epub 2021 Jan 23.

Department of Orthopedic Surgery, Research School CAPHRI, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX, Maastricht, The Netherlands.

Background Context: Adult spinal deformity patients treated operatively by long-segment instrumented spinal fusion are prone to develop proximal junctional kyphosis (PJK) and failure (PJF). A gradual transition in range of motion (ROM) at the proximal end of spinal instrumentation may reduce the incidence of PJK and PJF, however, previously evaluated techniques have not directly been compared.

Purpose: To determine the biomechanical characteristics of five different posterior spinal instrumentation techniques to achieve semirigid junctional fixation, or "topping-off," between the rigid pedicle screw fixation (PSF) and the proximal uninstrumented spine. Read More

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January 2021

Distal Metaphyseal Osteotomy Allows for Greater Ulnar Shortening Compared to Diaphyseal Osteotomy for Ulnar Impaction Syndrome: A Biomechanical Study.

J Wrist Surg 2020 Apr 28;9(2):100-104. Epub 2019 Aug 28.

Department of Orthopaedic Surgery, Wake Forest Baptist Medical Center, Winston Salem, North Carolina.

 To compare the biomechanical characteristics between diaphyseal and metaphyseal ulnar-shortening osteotomy with respect to (1) maximal shortening achieved at each osteotomy site and (2) force required to achieve shortening at each site.  Nine fresh frozen cadaveric upper extremities were affixed through the proximal ulna to a wooden surgical board. A metaphyseal 20-mm bone wedge was resected from the distal ulna and sequential shortening was performed. Read More

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Posterior Medial Meniscus Root Tears Potentiate the Effect of Increased Tibial Slope on Anterior Cruciate Ligament Graft Forces.

Am J Sports Med 2020 02 10;48(2):334-340. Epub 2019 Dec 10.

Twin Cities Orthopedics, Edina, Minnesota, USA.

Background: Increased posterior tibial slope and posterior medial meniscus root tears increase the force experienced by the anterior cruciate ligament (ACL) and predispose patients to higher rates of primary ACL injury or ACL graft failure after an ACL reconstruction (ACLR). However, the interplay among sagittal plane tibial slope, medial meniscus root tears, and ACLR graft force remains inadequately defined.

Purpose/hypothesis: The purpose was to quantify the effect of sagittal plane tibial slope on ACLR graft force at varying knee flexion angles with an intact medial meniscus, a posterior medial meniscus root tear, and a medial meniscus root repair. Read More

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February 2020

The effect of estrogen and progesterone on porcine corneal biomechanical properties.

Graefes Arch Clin Exp Ophthalmol 2019 Dec 17;257(12):2691-2695. Epub 2019 Oct 17.

Department of Ophthalmology, Faculty of Health Sciences, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel.

Purpose: To determine the effect of the hormones estrogen and progesterone on the biomechanical properties of porcine corneas.

Methods: Thirty fresh porcine corneas were acquired from an abattoir. The corneas were equally divided into three groups. Read More

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December 2019

Tibial Slope and Its Effect on Force in Anterior Cruciate Ligament Grafts: Anterior Cruciate Ligament Force Increases Linearly as Posterior Tibial Slope Increases.

Am J Sports Med 2019 02 14;47(2):296-302. Epub 2019 Jan 14.

The Steadman Clinic, Vail, Colorado, USA.

Background: Previous work has reported that increased tibial slope is directly correlated with increased anterior tibial translation, possibly predisposing patients to higher rates of anterior cruciate ligament (ACL) tears and causing higher rates of ACL graft failures over the long term. However, the effect of changes in sagittal plane tibial slope on ACL reconstruction (ACLR) graft force has not been well defined.

Purpose/hypothesis: The purpose of this study was to quantify the effect of changes in sagittal plane tibial slope on ACLR graft force at varying knee flexion angles. Read More

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February 2019

Three new species of s.l. (Russulales, Basidiomycota) from southern China.

MycoKeys 2018 3(37):93-107. Epub 2018 Aug 3.

Beijing Advanced Innovation Centre for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, China Beijing Forestry University Beijing China.

Three new species of s.l. with corticioid basidiomata are described and illustrated from southern China based on morphological evidence and phylogenetic analyses of ITS and nrLSU sequence data. Read More

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[Chest drain injury of the heart].

Rozhl Chir Fall 2017;96(11):475-477

Introduction: Injury to the heart during chest drainage is a very rare but potentially fatal complication of the procedure.

Case Report: A 56-year-old, polymorbid, poorly co-operative and extremely obese patient with chronic cardiac subcompensation and pleural effusion was admitted to a district hospital. A drain was inserted into the left pleural cavity in order to evacuate the pleural effusion. Read More

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Anterior cement augmentation of adjacent levels after vertebral body replacement leads to superior stability of the corpectomy cage under cyclic loading-a biomechanical investigation.

Spine J 2018 03 21;18(3):525-531. Epub 2017 Nov 21.

Department of Spine Surgery, Johann Wolfgang Goethe University Frankfurt, Germany.

Background: In the operative treatment of osteoporotic vertebral body fractures, a dorsal stabilization in combination with a corpectomy of the fractured vertebral body might be necessary with respect to the fracture morphology, whereby the osteoporotic bone quality may possibly increase the risk of implant failure. To achieve better stability, it is recommended to use cement-augmented screws for dorsal instrumentation. Besides careful end plate preparation, cement augmentation of the adjacent end plates has also been reported to lead to less reduction loss. Read More

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Tissue Permeability Effects Associated with the Use of Mucoadhesive Cationic Nanoformulations of Docetaxel in the Bladder.

Pharm Res 2016 08 18;33(8):1850-61. Epub 2016 Apr 18.

Faculty of Pharmaceutical Science, The University of British Columbia, 2405 Wesbrook Mall, Vancouver, British Columbia, V6T 1Z3, Canada.

Purpose: Recently, efficacy studies in mice have shown that amine-terminated cationic (CNP) nanoparticulate carriers of DTX offer an improved formulation of the drug for intravesical delivery. It is hypothesized that this improved efficacy may arise from a carrier mediated bladder exfoliation process that removes the urothelial barrier allowing for increased drug uptake into bladder tissue. The objective of this study was to investigate exfoliation processes in fresh pig's bladders (ex vivo) exposed to three cationic polyglycerols with increasing degrees of amination (denoted 350, 580 and 780). Read More

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Viscoelastic characterization of extraocular Z-myotomy.

Invest Ophthalmol Vis Sci 2014 Dec 4;56(1):243-51. Epub 2014 Dec 4.

Department of Ophthalmology, Jules Stein Eye Institute, University of California, Los Angeles, Los Angeles, United States Biomedical Engineering Interdepartmental Program, University of California, Los Angeles, Los Angeles, United States.

Purpose: Z-myotomy is an extraocular muscle (EOM) weakening procedure in which two incisions are made from longitudinally-separated, opposite EOM margins for treatment of strabismus. We examined the in vitro biomechanics of Z-myotomy using tensile loading.

Methods: Fresh bovine rectus EOMs were reduced to 20 × 10 × 2-mm dimensions, and clamped in a microtensile load cell under physiological conditions. Read More

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December 2014

Biomechanics of superior oblique Z-tenotomy.

J AAPOS 2013 Dec;17(6):612-7

Department of Ophthalmology, Jules Stein Eye Institute, University of California, Los Angeles; Department of Mechanical and Aerospace Engineering, University of California, Los Angeles.

Background: A recent report suggests that 70%-80% Z-tenotomy of the superior oblique tendon is necessary to effectively treat A-pattern strabismus associated with over depression in adduction. To clarify the clinical effect, we compared the biomechanics of Z-tenotomy on the superior oblique tendon, superior rectus tendon, and isotropic latex material.

Methods: Fresh bovine superior oblique tendons were trimmed to 20 mm × 10 mm dimensions similar to human superior oblique tendon and clamped in a microtensile load cell under physiological conditions of temperature and humidity. Read More

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December 2013

The influence of freezing on the tensile strength of tendon grafts : a biomechanical study.

Acta Orthop Belg 2013 Aug;79(4):435-43

Orthopaedic Department, KUL University Hospitals, Leuven, Belgium.

We investigated the influence of freezing on the tensile strength of fresh frozen tendon grafts. The biomechanical characteristics of tendons that are less commonly used in knee surgery (tibialis anterior, tibialis posterior, peroneus longus and medial and lateral half of Achilles tendons) were compared to those of a semitendinosus and gracilis graft harvested from the same 10 multi-organ donors. All right side tendons constituted the study group and were frozen at -80 degrees C and thawed at room temperature 5 times. Read More

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Height restoration of osteoporotic vertebral compression fractures using different intravertebral reduction devices: a cadaveric study.

Spine J 2015 May 5;15(5):1092-8. Epub 2013 Nov 5.

Department of Trauma and Reconstructive Surgery Philipps University of Marburg, University Hospital Giessen and Marburg, Baldingerstrasse, 35043 Marburg, Germany.

Background: The treatment of osteoporotic vertebral compression fractures using transpedicular cement augmentation has grown significantly during the past two decades. Balloon kyphoplasty was developed to restore vertebral height and improve sagittal alignment. Several studies have shown these theoretical improvements cannot be transferred universally to the clinical setting. Read More

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Molecular phylogeny and morphology reveal a new species of Amyloporia (Basidiomycota) from China.

Antonie Van Leeuwenhoek 2013 Nov 3;104(5):817-27. Epub 2013 Aug 3.

Institute of Microbiology, Beijing Forestry University, PO Box 61, Beijing, 100083, China,

Amyloporia pinea sp. nov. is described and illustrated on the basis of collections from southern China. Read More

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November 2013

Relationship between shear elastic modulus and passive muscle force: an ex-vivo study.

J Biomech 2013 Aug 13;46(12):2053-9. Epub 2013 Jun 13.

Department of Research, New York Chiropractic College, Seneca Falls, NY 13148, United States.

As muscle is stretched, it reacts with increasing passive resistance. This passive force component is important for normal muscle function. Unfortunately, direct measurement of passive muscle force is still beyond the current state-of-the-art. Read More

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Determination of poisson ratio of bovine extraocular muscle by computed X-ray tomography.

Biomed Res Int 2013 30;2013:197479. Epub 2012 Dec 30.

Department of Mechanical and Automotive Engineering, Gachon University, Seongnam-Si, Gyeonggi-do 461-701, Republic of Korea.

The Poisson ratio (PR) is a fundamental mechanical parameter that approximates the ratio of relative change in cross sectional area to tensile elongation. However, the PR of extraocular muscle (EOM) is almost never measured because of experimental constraints. The problem was overcome by determining changes in EOM dimensions using computed X-ray tomography (CT) at microscopic resolution during tensile elongation to determine transverse strain indicated by the change in cross-section. Read More

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September 2013

The routine intra-operative use of pulse oximetry for monitoring can prevent severe thromboembolic complications in anterior surgery.

Eur Spine J 2011 Dec 29;20(12):2097-102. Epub 2011 Jul 29.

The Centre for Spinal Studies and Surgery, Queens Medical Centre, Nottingham University Hospitals NHS Trust, Derby Road, Nottingham NG7 2UH, UK.

Introduction: Anterior access to the lumbar spine is established for disc replacement surgery and anterior interbody fusion in the lumbar spine. The spine is accessed normally from the left side either by a transperitoneal or retroperitoneal approach through a midline or oblique skin incision. After reaching the retroperitoneum and depending on the level of exposure, the surgeon has to mobilise and retract the aorta or left common iliac artery, as well as the left common iliac vein or internal vena cava to the right lateral border to address the whole disc space. Read More

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December 2011

Anatomical and biomechanical study on the interosseous membrane of the cadaveric forearm.

Chin J Traumatol 2011 Jun;14(3):147-50

Department of Orthopaedics, Second Affiliated Hospital of Wenzhou Medical College, Wenzhou 325027, China.

Objective: To study the anatomical and biomechanical features of the interosseous membrane (IOM) of the cadaveric forearm.

Methods: Ten radius-IOM-ulna structures were harvested from fresh-frozen cadavers to measure the length, width and thickness of the tendinous portion of IOM. Then, the tendinous portion was isolated along with the ulnar and radial ends to which the tendon attached after measurement. Read More

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Orthotopic liver transplantation without venovenous bypass using the conventional and piggyback techniques.

Transplant Proc 2011 May;43(4):1327-33

Department of Surgery and Liver Transplantation, Oswaldo Cruz University Hospital, University of Pernambuco, Recife City, Pernambuco State, Brazil.

Introduction: Orthotopic liver transplantation is a widely used procedure for the treatment of irreversible liver diseases for which there is no possibility of medical treatment. When this procedure is performed by the conventional technique, the retrohepatic vena cava is removed along with the native liver. The inferior vena cava (IVC) remains clamped until the revascularization of the graft, and in this period there is a reduction in the venous return, which may induce a fall by up to 50% in the cardiac output with hemodynamic instability and a fall in renal perfusion pressure. Read More

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Biomechanical comparison of extensile exposures in total knee arthroplasty.

Orthopedics 2010 Jun 9;33(6):387. Epub 2010 Jun 9.

International Center for Orthopaedic Advancement, Department of Orthopaedic Surgery, Johns Hopkins Bayview Medical Center, The Johns Hopkins University, Baltimore, Maryland, USA.

The "banana peel" exposure is a novel technique for knee joint exposure that consists of partially peeling the patellar tendon off the tibia, leaving the extensor mechanism intact distally and laterally. Although good clinical results have been reported with this technique with no disruption of the extensor mechanism, concerns exist that it could cause extensor lag, quadriceps weakness, or patellar tendon rupture. We compared the banana peel exposure repair to tibial tubercle osteotomy repair, which we chose as our benchmark procedure because much is known about its associated healing and rehabilitation protocols. Read More

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Ablation of subretinal tissue with optical fiber delivered 266 nm laser pulses.

Exp Eye Res 2010 Aug 25;91(2):257-63. Epub 2010 May 25.

Centre for Ophthalmology and Visual Science, The University of Western Australia, Perth, Australia.

New and more precise subretinal surgical techniques would be useful in a range of retinal diseases. The purpose of this study is to determine the feasibility of using fiberoptically delivered ultraviolet laser energy to transect or ablate subretinal tissues. Choroid segments dissected from fresh porcine eyes, with or without the retinal pigment epithelium (RPE), were clamped in a fluid bath. Read More

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[Protective effects of sevoflurane preconditioning on cerebral ischemia-reperfusion injury in rats].

Zhonghua Yi Xue Za Zhi 2009 Nov;89(41):2943-5

Department of Anesthesiology, Children's Hospital of Zhejiang University School of Medicine, Hangzhou 310003, China.

Objective: To investigate if sevoflurane preconditioning attenuate neuronal apoptosis induced by ischemia-reperfusion.

Methods: Thirty-six male SD rats weighing 250 - 300 g were randomly divided into three groups (n = 12 each): control group (group C), ischemia-reperfusion group (group IR) (rats were established cerebral artery clamped and reperfusion model), sevoflurane preconditioning group (group S) (rats were established cerebral artery clamped and reperfusion model after 1 h 2.4% sevoflurane preconditioning). Read More

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November 2009

Static frictional resistance with the slide low-friction elastomeric ligature system.

Aust Orthod J 2009 Nov;25(2):136-41

Unit of Orthodontics, UCL Eastman Dental Institute for Oral Health Care Sciences, London, UK.

Aim: This ex-vivo study compared the static frictional resistance of a low-friction ligation system against a conventional elastomeric module, and studied the effect of storage in a simulated oral environment on the static frictional resistance of both ligation systems.

Methods: Eighty stainless steel brackets were tested by sliding along straight lengths of 0.018 inch round and 0. Read More

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November 2009

Molecular analysis of the microbial communities of Mars analog lakes in Western Australia.

Astrobiology 2009 Dec;9(10):919-30

Department of Biological Sciences, Missouri University of Science and Technology, Rolla, Missouri 65409-1120, USA.

Unique, shallow interdune lakes and groundwaters with extremely low pH and high salinity exist in Australia, along with nearby lakes that possess higher pH values. These acidic hypersaline environments are possibly the best modern terrestrial analogues for past martian environments. However, no previous microbiological analyses of these lakes have been conducted. Read More

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December 2009

Inactivation of pathogens in single units of therapeutic fresh plasma by irradiation with ultraviolet light.

Transfusion 2009 Oct 27;49(10):2144-51. Epub 2009 May 27.

Blood Center of the German Red Cross Chapters of NSTOB, Institute Springe, Springe, Germany.

Background: Ultraviolet (UV) light, especially UVC, is germicidal but its ability to penetrate layers of protein containing solutions is poor. This hampers its use to inactivate pathogens in therapeutic fresh plasma (FP).

Study Design And Methods: FP units were spiked with lipid-enveloped or nonenveloped viruses. Read More

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October 2009

Stimulation of large-conductance Ca2+-activated K+ channels by the Na+/Ca2+ exchanger inhibitor dichlorobenzamil in cultured human umbilical vein endothelial cells and mouse aortic smooth muscle cells.

J Physiol Pharmacol 2009 Mar;60(1):43-50

Department of Physiology and Medical Research Institute, School of Medicine, Ewha Womans University, Seoul, Republic of Korea.

We investigated the effects of the selective inhibitor of Na(+)/Ca(2+) exchanger (NCX), 2',4'- and 3',4'-dichlorobenzamil (DCB), on large-conductance Ca(2+)-activated K(+) (BK(Ca)) channels in cultured human umbilical vein endothelial cells (HUVECs) and fresh isolated mouse aortic smooth muscle cells (MASMCs) using the patch clamp techniques. Both kinds of DCB reversibly activated BK(Ca) currents in whole-cell clamped HUVECs or MASMCs. The EC(50) of 2',4'-DCB for BK(Ca) current activation in HUVECs was 2. Read More

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Can the left hepatic vein always be safely selectively clamped during hepatectomy? The contribution of anatomy.

Surg Radiol Anat 2009 Nov;31(9):657-63

Department of Surgery, Hospital Ambroise Paré, 9 Avenue Charles de Gaulle, 92100 Boulogne, France.

The minimization of blood loss is the main objective during hepatic resection to minimize perioperative mortality and morbidity. Selective clamping of the hepatic veins, combined with pedicle clamping, may make it possible to spare the non-resected territories from ischemia. These clamping procedures are particularly useful in the treatment of hepatic metastases of colorectal cancers, because preoperative chemotherapy may temporarily alter the hepatic parenchyma, increasing its susceptibility to ischemia. Read More

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November 2009

The effect of repair of the lacertus fibrosus on distal biceps tendon repairs: a biomechanical, functional, and anatomic study.

Am J Sports Med 2009 Jan 24;37(1):120-3. Epub 2008 Nov 24.

Department of Orthopaedic Surgery, NYU Hospital for Joint Diseases, New York, NY 10003, USA.

Background: To date, repair of the lacertus in distal biceps tendon ruptures, recommended by some, has not been evaluated. The goal of these biomechanical experiments was to evaluate the degree to which its repair increases the strength of a distal biceps tendon repair.

Hypothesis: An intact or repaired lacertus fibrosus will increase the strength of a distal biceps tendon repair. Read More

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January 2009

Cadaveric biomechanical analysis of the distal radioulnar joint: influence of wrist isolation on accurate measurement and the effect of ulnar styloid fracture on stability.

J Hand Surg Am 2008 May-Jun;33(5):683-90

Department of Orthopedics, Oregon Health and Science University, Portland, OR 97239, USA.

Purpose: Distal radioulnar joint (DRUJ) instability can be tested using biomechanical cadaveric models, but inadequate isolation of the DRUJ during instability testing may introduce measurement error. The first goal of this investigation was to develop an effective model for isolating the DRUJ during biomechanical cadaveric testing. The second goal was to use this model to measure the effect of ulnar styloid fracture and subsequent repair on DRUJ kinematics in cadaveric specimens. Read More

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October 2008