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https://www.readbyqxmd.com/read/28791659/three-dimensional-analysis-of-the-tibial-resection-plane-relative-to-the-arthritic-tibial-plateau-in-total-knee-arthroplasty
#1
J Michael Johnson, Mohamed R Mahfouz, Mehmet Rüştü Midillioğlu, Alexander J Nedopil, Stephen M Howell
BACKGROUND: Kinematically aligned total knee arthroplasty strives to correct the arthritic deformity by restoring the native tibial joint line. However, the precision of such surgical correction needs to be quantified in order to reduce recuts of the resection and to design assisting instrumentation. This study describes a method for novel three-dimensional analysis of tibial resection parameters in total knee arthroplasty. Pre-operative versus post-operative differences in the slopes of the varus-valgus and flexion-extension planes and the proximal-distal level between the tibia resection and the arthritic tibial joint line can reliably be measured using the three-dimensional models of the tibia and fibula...
August 8, 2017: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/28760373/advantages-of-external-hybrid-fixatorsfor-treating-schatzker-v-vi-tibial-plateau-fractures-a-retrospective-study-of-40-cases
#2
Jean-Baptiste Gross, Bertrand Gavanier, Rémi Belleville, Henry Coudane, Didier Mainard, Didier Mainard
INTRODUCTION: Proximal tibia fractures make up 1% of all fractures in adults. The fractures classified as Schatzker V and VI fractures can compromise knee structure and function. They are challenging to treat and often have complications. While plate fixation is the gold standard, the resulting infection rate has led us to favor external hybrid fixation. The aims of this study were to assess the radiographical and functional outcomes along with the complication rate when using this method and to compare them to historical plate fixation data...
July 28, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28735430/approaches-and-fixation-of-the-posterolateral-fracture-fragment-in-tibial-plateau-fractures-a-review-with-an-emphasis-on-rim-plating-via-modified-anterolateral-approach
#3
REVIEW
Jae-Woo Cho, Jinil Kim, Won-Tae Cho, Jin-Kak Kim, Puspak Samal, Pranay H Gujjar, William T Kent, Jong-Keon Oh
PURPOSE: To review available approaches and fixation methods for posterolateral fracture fragment (PLF) in tibial plateau fracture, and to propose an algorithm to treat various types of plateau fractures which all involve the PLF. METHODS: This article reviews multiple surgical approaches for PLF and suggests an algorithm for suitable approach and fixation method according to PLF with combined plateau fracture. RESULTS: The modified anterolateral approach is a suitable single approach for fractures with a PLF combined with an anterolateral plateau fracture and for isolated posterolateral fracture fragments...
July 22, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28720297/comparison-of-tibial-anatomical-mechanical-axis-angle-between-predisposed-dogs-and-dogs-at-low-risk-for-cranial-cruciate-ligament-rupture
#4
L Guénégo, M Payot, P Charru, P Verwaerde
The purpose of this prospective, radiographic, descriptive study was to compare measurements of tibial anatomical-mechanical axis angle (AMA-angle), tibial plateau angle (TPA), relative tibial tuberosity width (rTTW) and Z-angle from mediolateral radiographs of the tibia between two canine breeds (72 dogs) not predisposed to cranial cruciate ligament rupture (CCLR) and those from a consecutive series of 185 large dogs and 17 West Highland white terriers (WHWT) diagnosed with unilateral, surgically confirmed CCLR...
July 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28720096/clinical-and-radiographic-predictors-of-acute-compartment-syndrome-in-the-treatment-of-tibial-plateau-fractures-a-retrospective-cohort-study
#5
Axel Gamulin, Anne Lübbeke, Patrick Belinga, Pierre Hoffmeyer, Thomas V Perneger, Matthieu Zingg, Gregory Cunningham
BACKGROUND: The aim of the study was to evaluate the relation between demographic, injury-related, clinical and radiological factors of patients with tibial plateau fractures and the development of acute compartment syndrome. METHODS: All consecutive adult patients with intra-articular tibial plateau fractures admitted in our urban academic medical centre between January 2005 and December 2009 were included in this retrospective cohort study. The main outcome measurement was the development of acute compartment syndrome...
July 18, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28702392/subchondroplasty-for-treating-bone-marrow-lesions-in-the-knee-initial-experience
#6
Marcelo Batista Bonadio, Pedro Nogueira Giglio, Camilo Partezani Helito, José Ricardo Pécora, Gilberto Luis Camanho, Marco Kawamura Demange
OBJECTIVE: To evaluate the use of subchondroplasty in the treatment of bone marrow lesions in an initial series of five cases. METHODS: The study included patients aged between 40 and 75 years old, with pain in the knee for at least six months, associated with high-signal MRI lesion on T2 sequences, on the tibia or femur. Patients were assessed using the visual analog pain scale and the KOOS score, one week before surgery and one, three, six, 12, and 24 weeks after the procedure...
May 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28696780/evaluation-of-the-effectiveness-of-toe-board-energy-absorbing-material-for-foot-ankle-and-lower-leg-injury-reduction
#7
John P Patalak, Joel D Stitzel
OBJECTIVE: Since 2000 numerous improvements have been made to the National Association for Stock Car Auto Racing, Incorporated (NASCAR®) driver restraint system, resulting in improved crash protection for motorsports drivers. Advancements have included seats, head and neck restraints (HNR), seat belt restraint systems, driver helmets and others. These enhancements have increased protection for drivers from severe crash loading. Extending protection to the driver's extremities remains challenging...
July 11, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28696495/robotic-arm-assisted-total-knee-arthroplasty-demonstrated-soft-tissue-protection
#8
Anton Khlopas, Morad Chughtai, Emily L Hampp, Laura Y Scholl, Michael Prieto, Ta-Cheng Chang, Abdullah Abbasi, Manoshi Bhowmik-Stoker, Jason Otto, David J Jacofsky, Michael A Mont
INTRODUCTION: While total knee arthroplasty (TKA) procedures have demonstrated clinical success, occasionally intraoperative complications can occur. Collateral or posterior cruciate ligament injury, instability, extensor mechanism disruption, and tibiofemoral or patellofemoral dislocation are among a few of the intraoperatively driven adverse events prevalently ranked by The Knee Society. Robotic-arm assisted TKA (RATKA) provides a surgeon the ability to three-dimensionally plan a TKA and use intraoperative visual, auditory, and tactile feedback to ensure that only the desired bone cuts are made...
July 11, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28656456/modifications-of-femoral-component-design-in-multi-radius-total-knee-arthroplasty-lead-to-higher-lateral-posterior-femoro-tibial-translation
#9
Tilman Pfitzner, Philippe Moewis, Patrick Stein, Heide Boeth, Adam Trepczynski, Philipp von Roth, Georg N Duda
PURPOSE: As the aims of changes in total knee arthroplasty (TKA) designs are to reinstate more natural kinematics, the current study evaluated the in vivo kinematics in patients who underwent a cruciate retaining gradually changing femoral radius ("G-CURVE") against a cruciate retaining conventional changing femoral radius ("J-CURVE") geometry TKA design. The hypothesis of the study is that the G-CURVE design would allow a substantial increase in the femoral rollback compared to the J-CURVE design...
June 27, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28642164/joint-loading-and-proximal-tibia-subchondral-trabecular-bone-microarchitecture-differ-with-walking-gait-patterns-in-end-stage-knee-osteoarthritis
#10
B C Roberts, L B Solomon, G Mercer, K J Reynolds, D Thewlis, E Perilli
OBJECTIVES: To (1) stratify subgroups according to their distinct walking gait patterns in end-stage knee osteoarthritis (OA) patients; (2) compare measures of joint loading and proximal tibia subchondral trabecular bone (STB) microarchitecture among subgroups. DESIGN: Twenty-five knee OA patients undergoing total knee arthroplasty (TKA) had pre-operative gait analysis. Following surgery, excised tibial plateaus were micro-CT-scanned and STB microarchitecture analysed in four tibial condylar regions of interest...
June 20, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28638170/atlas-based-automatic-measurements-of-the-morphology-of-the-tibiofemoral-joint
#11
M Brehler, G Thawait, W Shyr, J Ramsay, J H Siewerdsen, W Zbijewski
PURPOSE: Anatomical metrics of the tibiofemoral joint support assessment of joint stability and surgical planning. We propose an automated, atlas-based algorithm to streamline the measurements in 3D images of the joint and reduce user-dependence of the metrics arising from manual identification of the anatomical landmarks. METHODS: The method is initialized with coarse registrations of a set of atlas images to the fixed input image. The initial registrations are then refined separately for the tibia and femur and the best matching atlas is selected...
February 11, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28634785/-imaging-and-preoperative-planning-for-osteotomies-around-the-knee
#12
REVIEW
D Pape, A Hoffmann, R Seil
Physiologic alignment of the human lower leg is well defined. The etiology for malalignment comprises constitutional, degenerative and posttraumatic conditions. Osteotomies around the knee can correct the malalignment, provided that the origin of deviation is in proximity of the knee center. Crucial factors for the evaluation of axis deviation are the weight-bearing line, the mechanical axes of femur and tibia, the joint line angles and the center of the hip, knee and upper ankle joint. Careful preoperative planning is mandatory for reproducible clinical results...
August 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28630761/partial-proximal-tibia-fractures
#13
Michael J Raschke, Christoph Kittl, Christoph Domnick
Partial tibial plateau fractures may occur as a consequence of either valgus or varus trauma combined with a rotational and axial compression component.High-energy trauma may result in a more complex and multi-fragmented fracture pattern, which occurs predominantly in young people. Conversely, a low-energy mechanism may lead to a pure depression fracture in the older population with weaker bone density.Pre-operative classification of these fractures, by Müller AO, Schatzker or novel CT-based methods, helps to understand the fracture pattern and choose the surgical approach and treatment strategy in accordance with estimated bone mineral density and the individual history of each patient...
May 2017: EFORT open reviews
https://www.readbyqxmd.com/read/28610776/two-stage-late-reconstruction-with-a-fresh-large-osteochondral-shell-allograft-transplantation-flocsat-for-a-large-ostechondral-defect-in-a-non-union-after-a-lateral-tibia-plateau-fracture-2-year-follow-up
#14
C Krettek, J Clausen, M Omar, S Noack, C Neunaber
This is the description of a 58-year-old female patient presenting 8 months after a horse riding accident with significant pain and inability to walk independently. Imaging revealed a large osseous defect of the lateral tibia plateau which was not united posteriorly. The patient refused knee replacement and we developed a patient specific two-step procedure for her. Step 1: Filling of the defect with a large cortico-cancellous autograft from the posterior iliac crest; step 2: Transplantation of a fresh large osteochondral shell allograft (FLOCSAT)...
July 2017: Injury
https://www.readbyqxmd.com/read/28602471/primary-stability-of-tibial-plateaus-under-dynamic-compression-shear-loading-in-human-tibiae-influence-of-keel-length-cementation-area-and-tibial-stem
#15
Thomas M Grupp, Khaled J Saleh, Melanie Holderied, Andreas M Pfaff, Christoph Schilling, Christian Schroeder, William M Mihalko
The objective of our study was to evaluate the impact of the tibial keel & stem length in surface cementation, of a full cemented keel and of an additional tibial stem on the primary stability of a posterior stabilised tibial plateau (VEGA® System Aesculap Tuttlingen, Germany) under dynamic compression-shear loading conditions in human tibiae. We performed the cemented tibial plateau implantations on 24 fresh-frozen human tibiae of a mean donor age of 70.7years (range 47-97). The tibiae were divided into four groups of matched pairs based on comparable trabecular bone mineral density...
July 5, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28595814/extremity-compartment-syndrome-following-blunt-trauma-a-level-i-trauma-center-s-5-year-experience
#16
Daniel Zuchelli, Nicholas Divaris, Jane E McCormack, Emily C Huang, Neeta D Chaudhary, James A Vosswinkel, Randeep S Jawa
BACKGROUND: Extremity compartment syndrome is a recognized complication of trauma. We evaluated its prevalence and outcomes at a suburban level 1 trauma center. METHODS: The trauma registry was reviewed for all blunt trauma patients aged ≥18 years, admitted between 2010 and 2014. Chart review of patients with extremity compartment syndrome was performed. RESULTS: Of 6180 adult blunt trauma admissions, 83 patients developed 86 extremity compartment syndromes; two patients had compartment syndromes on multiple locations...
May 10, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28580241/lateral-capsular-fixation-an-implant-free-technique-to-prevent-meniscal-allograft-extrusion
#17
Joan C Monllau, Maximiliano Ibañez, Angel Masferrer-Pino, Pablo E Gelber, Juan I Erquicia, Xavier Pelfort
Although several surgical techniques have been described to perform meniscal allograft transplantation with good clinical results and although different methods of capsular stabilization can be found in the literature, there is no standard surgical technique to prevent a common complication in the most of series: the tendency to a radial displacement or extrusion of the transplanted menisci. We present a simple, reproducible, and implant-free technique to perform a lateral capsular fixation (capsulodesis) at the time of only the soft-tissue fixation technique of meniscal allograft transplantation in an effort to reduce or prevent the risk of graft extrusion...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28579444/three-dimensional-computed-tomography-analysis-of-the-posterior-tibial-slope-in-100-knees
#18
Jade Pei Yuik Ho, Azhar M Merican, Muhammad Sufian Hashim, Azlina A Abbas, Chee Ken Chan, Jamal A Mohamad
BACKGROUND: The posterior tibial slope (PTS) is an important consideration in knee arthroplasty. However, there is still no consensus for the optimal slope. The objectives of this study were (1) to reliably determine the native PTS in this population using 3-dimensional computed tomography scans and (2) to determine the normal reference range for PTS in this population. METHODS: One hundred computed tomography scans of disease-free knees were analyzed. A 3-dimensional reconstructed image of the tibia was generated and aligned to its anatomic axis in the coronal and sagittal planes...
May 10, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28571921/variability-in-static-alignment-and-kinematics-for-kinematically-aligned-tka
#19
Willy Theodore, Joshua Twiggs, Elizabeth Kolos, Justin Roe, Brett Fritsch, David Dickison, David Liu, Lucy Salmon, Brad Miles, Stephen Howell
BACKGROUND: Total knee arthroplasty (TKA) significantly improves pain and restores a considerable degree of function. However, improvements are needed to increase patient satisfaction and restore kinematics to allow more physically demanding activities that active patients consider important. The aim of our study was to compare the alignment and motion of kinematically and mechanically aligned TKAs. METHODS: A patient specific musculoskeletal computer simulation was used to compare the tibio-femoral and patello-femoral kinematics between mechanically aligned and kinematically aligned TKA in 20 patients...
May 29, 2017: Knee
https://www.readbyqxmd.com/read/28566780/radiologic-assessment-of-femoral-and-tibial-tunnel-placement-based-on-anatomic-landmarks-in-arthroscopic-single-bundle-anterior-cruciate-ligament-reconstruction
#20
Sandeep Kumar Nema, Gopisankar Balaji, Sujiv Akkilagunta, Jagdish Menon, Murali Poduval, Dilip Patro
BACKGROUND: Accurate tibial and femoral tunnel placement has a significant effect on outcomes after anterior cruciate ligament reconstruction (ACLR). Postoperative radiographs provide a reliable and valid way for the assessment of anatomical tunnel placement after ACLR. The aim of this study was to examine the radiographic location of tibial and femoral tunnels in patients who underwent arthroscopic ACLR using anatomic landmarks. Patients who underwent arthroscopic ACLR from January 2014 to March 2016 were included in this retrospective cohort study...
May 2017: Indian Journal of Orthopaedics
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