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Tibia plateau

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https://www.readbyqxmd.com/read/29786151/time-dependent-loss-of-trabecular-bone-in-human-tibial-plateau-fractures
#1
Lucian Bogdan Solomon, David Kitchen, Paul Hamill Anderson, Dongqing Yang, Yolandi Starczak, Masakazu Kogawa, Egon Perilli, Peter Jonathan Smitham, Mark Sean Rickman, Dominic Thewlis, Gerald James Atkins
We investigated if time between injury and surgery affects cancellous bone properties in patients suffering tibial plateau fractures (TPF), in terms of structural integrity and gene expression controlling bone loss. A cohort of 29 TPF, operated 1-17 days post-injury, had biopsies from the fracture and an equivalent contralateral limb site, at surgery. Samples were assessed using micro-computed tomography and real-time RT-PCR analysis for the expression of genes known to be involved in bone remodeling and fracture healing...
May 22, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29777960/utility-of-cement-injection-to-stabilize-split-depression-tibial-plateau-fracture-by-minimally-invasive-methods-a-finite-element-analysis
#2
D Belaid, T Vendeuvre, A Bouchoucha, F Brémand, C Brèque, P Rigoard, A Germaneau
BACKGROUND: Treatment for fractures of the tibial plateau is in most cases carried out by stable fixation in order to allow early mobilization. Minimally invasive technologies such as tibioplasty or stabilization by locking plate, bone augmentation and cement filling (CF) have recently been used to treat this type of fracture. The aim of this paper was to determine the mechanical behavior of the tibial plateau by numerically modeling and by quantifying the mechanical effects on the tibia mechanical properties from injury healing...
May 8, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29776425/combined-application-of-latissimus-dorsi-myocutaneous-flap-and-iliac-bone-flap-in-the-treatment-of-chronic-osteomyelitis-of-the-lower-extremity
#3
Jihui Ju, Lei Li, Rong Zhou, Ruixing Hou
BACKGROUND: To evaluate the clinical efficacy and safety of latissimus dorsi myocutaneous flap (stage I) combined with iliac bone flap (stage II) in the treatment of chronic osteomyelitis of the lower extremity. METHODS: Clinical data of 18 patients undergoing latissimus dorsi myocutaneous flap in combination with iliac bone flap grafting were retrospectively analyzed. Among them, 2 patients developed chronic osteomyelitis of the lower segment of the femur, 4 were diagnosed with chronic osteomyelitis of the tibial plateau, and 12 with chronic osteomyelitis of the lower segment of the tibia...
May 18, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29770583/angle-stable-interlocking-intramedullary-nails-for-tibial-plateau-fractures
#4
Peng Jia, Feng-Cheng Lu, Kifayat Ullah, Man Zhang, Yan-Sheng Dong, Chao Xiong, Zhi-Hui Zhao, Jin-Feng Wang, Ju-Wen Chen, Yong-Qing Wang
OBJECTIVE: Angle stable interlocking intramedullary nail (ASIN), a novel technique, has rarely been used for treatment of tibial plateau fractures (TPF). This retrospective study was designed to introduce this novel technique, ASIN, as well as to describe the initial experience and verify the effectiveness when ASIN was used for the management for TPF. METHODS: A cohort of 19 cases with closed TPF aged from 18-70 years with at least 23 months follow-up from November 2008 to September 2013 was analyzed retrospectively...
May 16, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29762184/histomorphometric-comparison-of-3-osteotomy-techniques
#5
Frederic B Slete, Paul Olin, Hari Prasad
PURPOSE: This pilot study compares the histomorphometric structure of osteotomy preparation through standard extraction drilling (SD), Summers osteotomes (SO), and a new method of nonextraction drilling called osseodensification (OD). METHOD AND MATERIALS: Fresh porcine tibia plateau was used as the surgical specimen. Three preparation methods (N = 6 for each) were used to prepare 18 osteotomies according to manufacturer protocols. Eighteen tapered screw-vent (4...
May 14, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29748140/bone-microarchitecture-of-the-tibial-plateau-in-skeletal-health-and-osteoporosis
#6
Matthias Krause, Jan Hubert, Simon Deymann, Alexander Hapfelmeier, Birgit Wulff, Andreas Petersik, Klaus Püschel, Michael Amling, Thelonius Hawellek, Karl-Heinz Frosch
BACKGROUND: Impaired bone structure poses a challenge for the treatment of osteoporotic tibial plateau fractures. As knowledge of region-specific structural bone alterations is a prerequisite to achieving successful long-term fixation, the aim of the current study was to characterize tibial plateau bone structure in patients with osteoporosis and the elderly. METHODS: Histomorphometric parameters were assessed by high-resolution peripheral quantitative computed tomography (HR-pQCT) in 21 proximal tibiae from females with postmenopausal osteoporosis (mean age: 84...
May 7, 2018: Knee
https://www.readbyqxmd.com/read/29737002/lower-limb-reconstruction-with-chimeric-flaps-the-quad-flap
#7
Solomon M Azouz, Nikki A Castel, Aparna Vijayasekaran, Alanna M Rebecca, Salvatore C Lettieri
Early soft-tissue coverage is critical for treating traumatic open lower-extremity wounds. As free-flap reconstruction evolves, injuries once thought to be nonreconstructable are being salvaged. Free-tissue transfer is imperative when there is extensive dead space or exposure of vital structures such as bone, tendon, nerves, or blood vessels. We describe 2 cases of lower-extremity crush injuries salvaged with the quad flap. This novel flap consists of parascapular, scapular, serratus, and latissimus dorsi free flaps in combination on one pedicle...
May 7, 2018: Microsurgery
https://www.readbyqxmd.com/read/29704953/risk-factors-associated-with-amputation-in-civilian-popliteal-artery-trauma
#8
Michael J Ramdass, Alyssa Muddeen, Patrick Harnarayan, Richard Spence, David Milne
Popliteal artery trauma is uncommon but is associated with a high risk of limb loss depending on the scenario involving blunt or penetrating trauma as well as the severity and extent of injury that has occurred. In our setting there is a significant amount of gang and civilian warfare resulting in Vascular Trauma. There were 32 patients over a decade who sustained traumatic injury to the popliteal artery consisting of 30 males (94%) and 2 females with an age range 16-59 years with a mean of 32. There were 20 cases of penetrating trauma (63%) and 12 cases of blunt trauma (37%)...
April 24, 2018: Injury
https://www.readbyqxmd.com/read/29700856/defining-the-width-of-the-normal-tibial-plateau-relative-to-the-distal-femur-critical-normative-data-for-identifying-pathologic-widening-in-tibial-plateau-fractures
#9
Adam M Johannsen, Austin M Cook, Michael Gardner, Julius A Bishop
INTRODUCTION: Tibial plateau widening in the setting of fracture is an indication for surgical treatment, and restoring width is an important goal of surgery. In order to identify and correct pathological widening, the width of the normal tibial plateau must first be defined. The aim of this study was to establish normative data for the width of the tibial plateau relative to the distal femur to enable surgeons to identify and correct pathological widening in the setting of tibial plateau fracture...
April 26, 2018: Clinical Anatomy
https://www.readbyqxmd.com/read/29685499/how-does-the-inclination-of-the-tibial-component-matter-a-three-dimensional-finite-element-analysis-of-medial-mobile-bearing-unicompartmental-arthroplasty
#10
Xuesong Dai, Jinghua Fang, Lifeng Jiang, Yan Xiong, Miaofeng Zhang, Sunan Zhu
BACKGROUND: Medial unicompartmental knee arthroplasty (UKA) using Oxford mobile-bearing prosthesis is performed in the treatment of medial compartmental arthritis of the knee. However, little is known about the stress distributions for mobile-bearing UKA on the medial tibial plateau. METHODS: In this study, the stresses on the coronal plane were calculated in a three-dimensional model of the proximal tibia. The features of the stress distribution were investigated when the tibial tray was placed in 15°, 10°, six degrees, and three degrees varus, neutral (0°), and in three degrees, six degrees, 10°, and 15° valgus on the coronal plane of the medial plateau...
April 20, 2018: Knee
https://www.readbyqxmd.com/read/29678367/a-biomechanical-evaluation-of-different-fixation-strategies-for-posterolateral-fragments-in-tibial-plateau-fractures-and-introduction-of-the-magic-screw
#11
Hui Sun, Qi-Fang He, Bin-Bin Zhang, Yi Zhu, Wei Zhang, Yi-Min Chai
BACKGROUND: Posterior plate fixation is biomechanically the strongest fixation method for posterolateral column fracture (PLCF) of the tibial plateau; however, there are inherent deficiencies and risks of a posterior approach. Thus, the 'magic screw' was proposed to enhance fixation stability of the lateral rafting plate used for PLCF. The purpose of this study was to re-examine and compare the stability of different fixation methods for PLCF. METHODS: Synthetic tibiae models were used to simulate posterolateral split fractures...
April 17, 2018: Knee
https://www.readbyqxmd.com/read/29667235/contrast-enhanced-computed-tomography-cect-attenuation-is-associated-with-stiffness-of-intact-knee-cartilage
#12
Reza Nickmanesh, Rachel C Stewart, Brian D Snyder, Mark W Grinstaff, Bassam A Masri, David R Wilson
Contrast-enhanced computed tomography (CECT) using charged contrast-agents enables quantification of cartilage glycosaminoglycan content. Since glycosaminoglycan content is a key determinant of cartilage compressive stiffness, CECT measurements have the potential to non-invasively assess cartilage stiffness. The objective of this study was to determine whether CECT attenuation, using a cationic contrast-agent (CA4 +), correlates with the stiffness of intact cartilage. Six fresh femoral and six fresh tibial compartments with intact cartilage were obtained from patients undergoing total knee replacement surgery...
April 17, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29663495/three-dimensional-mapping-of-the-joint-space-for-the-diagnosis-of-knee-osteoarthritis-based-on-high-resolution-computed-tomography-comparison-with-radiographic-outerbridge-and-meniscal-classifications
#13
Houda Mezlini-Gharsallah, Rabaa Youssef, Stéphanie Uk, Jean Denis Laredo, Christine Chappard
One of the most important characteristic of knee osteoarthritis (OA) is the joint space (JS) width narrowing. Measurements are usually performed on two dimensional (2D) X-rays. We propose and validate a new method to assess the 3D joint space at the medial knee compartment using high resolution peripheral computed tomography images. A semi-automated method was developed to obtain a distance 3D map between femur an tibia with the following parameters: volume, minimum, maximum, mean, standard deviation, median, asymmetry and entropy...
April 16, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29662767/reconstruction-of-the-lateral-tibia-plateau-fracture-with-a-third-triangular-support-screw-a-biomechanical-study
#14
Eduardo Moran, Ivan Zderic, Kajetan Klos, Paul Simons, Miguel Triana, R Geoff Richards, Boyko Gueorguiev, Mark Lenz
Background: Split fractures of the lateral tibia plateau in young patients with good bone quality are commonly treated using two minimally invasive percutaneous lag screws, followed by unloading of the knee joint. Improved stability could be achieved with the use of a third screw inserted either in the jail-technique fashion or with a triangular support screw configuration. The aim of this study was to investigate under cyclic loading the compliance and endurance of the triangular support fixation in comparison with the standard two lag-screw fixation and the jail technique...
October 2017: Journal of Orthopaedic Translation
https://www.readbyqxmd.com/read/29622244/editorial-commentary-to-treat-or-not-to-treat-are-we-any-closer-to-knowing-what-to-do-with-cartilage-lesions-of-the-tibia
#15
EDITORIAL
William Bugbee
The increasing interest and use of cartilage repair procedures in the knee has led to a better understanding of when and how chondral lesions should be treated. Nonetheless, there are still key areas where we lack understanding and need better data to guide clinical decision making. One of these areas is how to manage lesions of the tibia, particularly when they occur in conjunction with the more commonplace lesions of the femoral condyle. In this setting, a tibial chondral lesion may reflect a bigger clinical problem-a "bipolar defect" or more advanced joint disease-"established osteoarthritis...
April 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29598844/effect-of-bmi-on-outcomes-of-surgical-treatment-for-tibial-plateau-fractures-a-comparative-retrospective-case-series-study
#16
Yaşar Mahsut Dinçel, Ali Öner, Yavuz Arikan, Sever Çaglar, Raşit Özcafer, Mehmet Akif Güleç
PURPOSE: Tibia plateau fracture (TPF) treatment aims at achieving a stable, aligned, mobile, painless knee and preventing post-traumatic osteoarthritis. To achieve this goal, surgeons consider criteria such as patients' characteristics, severity, risk of complications, fracture displacement/depression, degree of soft tissue injury. However, body mass index (BMI) is not considered as a risk factor in literature. Our study was conducted to find out any possible correlation between BMI and functional scores or radiological score separately...
March 2, 2018: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/29588122/autologous-impaction-bone-grafting-for-bone-defects-of-the-medial-tibia-plateau-during-primary-total-knee-arthroplasty-propensity-score-matched-analysis-with-a-minimum-of-7-year-follow-up
#17
Jong M Sohn, Yong In, Sang H Jeon, Jin Y Nho, Man S Kim
BACKGROUND: The aims of this study were to (1) describe a novel technique for appropriate treatment of bone defects in medial tibial plateau grafted with autologous resected bone and (2) compare clinical outcomes, radiographic results, and survivorship of these knees with those of standard total knee arthroplasty (TKA) without bone defect. METHODS: We retrospectively reviewed 50 cases of primary TKA involving bone defects of medial tibial plateau managed with bone grafting for a minimum follow-up of 7 years...
March 6, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29571819/reliability-evaluation-of-inter-eminence-line-akagi-and-dalury-lines-for-intraoperative-tibial-rotation-an-osteology-based-study
#18
Rhodri Williams, Amal Thomas, Stefan Bajada, Tony Antonios, Rhidian Morgan-Jones, Jelena Bekvalac, Philip Adds
BACKGROUND: This large osteology study examined the reliability, reproducibility and correlation between previously described tibial tray rotation alignment lines (including Akagi and Dalury lines). In addition, it described a novel inter-eminence line utilising the tibial plateau inter-condylar eminences as a landmark. METHODS: A total of 214 post-medieval (18-19th centuries) skeletal tibia were examined. The inter/intra-observer variation and correlation between reference lines were measured...
March 20, 2018: Knee
https://www.readbyqxmd.com/read/29554904/relationship-between-tibial-conformation-cage-size-and-advancement-achieved-in-tta-procedure
#19
R L Meeson, L Corah, M C Conroy, I Calvo
BACKGROUND: Previous studies have suggested that there is a theoretical discrepancy between the cage size and the resultant tibial tuberosity advancement, with the cage size consistently providing less tibial tuberosity advancement than predicted. The purpose of this study was to test and quantify this in clinical cases. The hypothesis was that the advancement of the tibial tuberosity as measured by the widening of the proximal tibia at the tibial tuberosity level after a standard TTA, will be less than the cage sized used, with no particular cage size providing a relative smaller or higher under-advancement, and that the conformation of the proximal tibia will have an influence on the amount of advancement achieved...
March 20, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29534412/-revision-of-schatzker-type-%C3%A2-tibial-plateau-fracture-failure-focus-on-the-recovery-of-lower-limb-alignment
#20
R J Cong, J F Liu, Y Jiang, Duolikun Dilixiati, X D Hou, L P Zheng
Objective: To explore the influence of the lower extremity abnormal alignment and the joint surface, and to explore the surgical skills. Methods: Twenty-two cases of tibial plateau Schatzker Ⅵ fracture internal fixation failure revision from January 2012 to January 2017 in Department of Orthopedics, Shanghai 10(th) Hospital.One year follow-up after initial surgery to make sure of failure.Three-dimensional CT scan, radiography, infection index, gait analysis, knee joint ROM, femur tibia angle, tibial plateau tibial shaft angle and posterior slope if tibial plateau were observed...
March 1, 2018: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
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