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Tibial plateau

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https://www.readbyqxmd.com/read/29331302/bone-matrix-microdamage-and-vascular-changes-characterize-bone-marrow-lesions-in-the-subchondral-bone-of-knee-osteoarthritis
#1
Dzenita Muratovic, David M Findlay, Flavia M Cicuttini, Anita E Wluka, Yea-Rin Lee, Julia S Kuliwaba
INTRODUCTION: Bone marrow lesions (BMLs) in the subchondral bone in osteoarthritis (OA) are suggested to be multifactorial, although the pathogenic mechanisms are unknown. Bone metabolism and cardiovascular risk factors associate with BML in epidemiologic studies. However, there are no studies at the tissue level investigating the relationship between these processes and BML. The aim of this study was to investigate the relationship between BMLs in the tibial plateau (TP) of knee OA and bone matrix microdamage, osteocyte density and vascular changes...
January 10, 2018: Bone
https://www.readbyqxmd.com/read/29331230/lower-limb-articular-scaling-and-body-mass-estimation-in-pliocene-and-pleistocene-hominins
#2
Christopher B Ruff, M Loring Burgess, Nicole Squyres, Juho-Antti Junno, Erik Trinkaus
Previous attempts to estimate body mass in pre-Holocene hominins have relied on prediction equations derived from relatively limited extant samples. Here we derive new equations to predict body mass from femoral head breadth and proximal tibial plateau breadth based on a large and diverse sample of modern humans (avoiding the problems associated with using diaphyseal dimensions and/or cadaveric reference samples). In addition, an adjustment for the relatively small femoral heads of non-Homo taxa is developed based on observed differences in hip to knee joint scaling...
January 10, 2018: Journal of Human Evolution
https://www.readbyqxmd.com/read/29327559/-combined-surgical-approaches-in-the-treatment-of-complex-tibial-plateau-fractures
#3
Guang-Hua Yuan, Xiao Zheng, Kang Chen
OBJECTIVE: To explore the early clinical efficacy of a posteromedial inverted "L" shape approach combined an assisted antero lateral assisted approach for the treatment of complex fractures of tibial plateau. METHODS: From March 2011 to June 2014, the posteromedial inverted "L" shape approach combined with the antero lateral assisted approach in the treatment of Schatzker type IV, V, VI tibial plateau fracture were performed in 34 cases. There were 23 males and 11 females, ranging in age from18 to 67 years old, averaged 34...
January 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29322320/is-there-a-relationship-between-the-load-distribution-on-the-tibial-plateau-and-hip-knee-ankle-angle-after-tka
#4
Takao Kaneko, Norihiko Kono, Yuta Mochizuki, Hiroyasu Ikegami, Yoshiro Musha
INTRODUCTION: This study asked whether differences in coronal alignment after total knee arthroplasty (TKA) affect the load distribution on the tibial plateau. The aim of this study was to investigate the correlation between coronal alignment and the load distribution on the tibial plateau after TKA, using three-dimensional multi-detector-row-computed tomography (3D-MDCT). MATERIALS AND METHODS: In this study, we performed 84 cementless TKA with porous tantalum modular tibial component (PTMT) and divided into three groups based on post-operative hip-knee-ankle (HKA) angle: varus alignment group (n = 22), (176° ≧) neutral alignment group (n = 45), (180° ± 3°), and valgus alignment group (n = 17) (184° ≦)...
January 10, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29311696/reliable-landmarks-for-precise-topographical-analyses-of-pathological-structural-changes-of-the-ovine-tibial-plateau-in-2-d-and-3-d-subspaces
#5
Tamás Oláh, Jan Reinhard, Liang Gao, Lars K H Goebel, Henning Madry
Selecting identical topographical locations to analyse pathological structural changes of the osteochondral unit in translational models remains difficult. The specific aim of the study was to provide objectively defined reference points on the ovine tibial plateau based on 2-D sections of micro-CT images useful for reproducible sample harvesting and as standardized landmarks for landmark-based 3-D image registration. We propose 5 reference points, 11 reference lines and 12 subregions that are detectable macroscopically and on 2-D micro-CT sections...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29310669/the-tibial-growth-plate-as-a-predictor-of-the-original-tibial-plateau-joint-line-as-a-reference-for-kinematically-aligned-total-knee-arthroplasty
#6
Katsuya Nagai, Yasuo Niki, Kengo Harato, Shu Kobayashi, Takeo Nagura, Takayuki Nakamura, Morio Matsumoto, Masaya Nakamura
BACKGROUND: Restoration of the natural joint line is a cornerstone for kinematically aligned total knee arthroplasty (TKA). The purpose of this study was to investigate the relative orientation of the tibial growth plate (GP) with respect to the tibial plateau (TP) for possible application in predicting natural joint line for knees with highly advanced osteoarthritis patient at the time of kinematically aligned TKA. METHODS: Images from computed tomography (CT) of 27 normal knees (9 males, 18 females; mean age, 31...
January 8, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29305450/in-vivo-three-dimensional-kinematics-of-normal-knees-during-different-high-flexion-activities
#7
K Kono, T Tomita, K Futai, T Yamazaki, S Tanaka, H Yoshikawa, K Sugamoto
AIMS: In Asia and the Middle-East, people often flex their knees deeply in order to perform activities of daily living. The purpose of this study was to investigate the 3D kinematics of normal knees during high-flexion activities. Our hypothesis was that the femorotibial rotation, varus-valgus angle, translations, and kinematic pathway of normal knees during high-flexion activities, varied according to activity. MATERIALS AND METHODS: We investigated the in vivo kinematics of eight normal knees in four male volunteers (mean age 41...
January 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29305289/prediction-models-to-improve-the-diagnostic-value-of-plain-radiographs-in-children-with-complete-discoid-lateral-meniscus
#8
Yong-Beom Park, Chul-Won Ha, Jae Won Jang, Manyoung Kim, Han-Jun Lee, Yong-Geun Park
PURPOSE: To develop prediction models to improve the diagnostic utility of plain radiographs for the diagnosis of complete discoid lateral meniscus by combining previously reported radiographic findings. METHODS: Patients ages 5 to 16 years with complete discoid lateral meniscus confirmed by arthroscopy or magnetic resonance imaging were included. Patients with insufficient radiographs were excluded. Normal control subjects were randomly sampled by age and sex matching...
January 2, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29299611/bone-morphology-and-morphometry-of-the-lateral-femoral-condyle-is-a-risk-factor-for-acl-injury
#9
Sebastiano Vasta, Renato Andrade, Rogério Pereira, Ricardo Bastos, Antonino Giulio Battaglia, Rocco Papalia, João Espregueira-Mendes
PURPOSE: The purpose of this study was to investigate the influence of the knee lateral compartment bony morphology and morphometry on risk of sustaining an anterior cruciate ligament (ACL) injury. METHODS: A total of 400 age and sex-matched patients (200 ACL-ruptured and 200 ACL-intact) were included. The lateral femoral and tibial bone morphology and morphometric parameters were measured on knee lateral radiographs, taken at 30° of knee flexion with overlapping of the femoral condyles...
January 3, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29299499/measurement-of-posterior-tibial-slope-using-magnetic-resonance-imaging
#10
Elham Karimi, Mohsen Norouzian, Ali Birjandinejad, Reza Zandi, Hadi Makhmalbaf
Background: Posterior tibial slope (PTS) is an important factor in the knee joint biomechanics and one of the bone features, which affects knee joint stability. Posterior tibial slope has impact on flexion gap, knee joint stability and posterior femoral rollback that are related to wide range of knee motion. During high tibial osteotomy and total knee arthroplasty (TKA) surgery, proper retaining the mechanical and anatomical axis is important. The aim of this study was to evaluate the value of posterior tibial slope in medial and lateral compartments of tibial plateau and to assess the relationship among the slope with age, gender and other variables of tibial plateau surface...
November 2017: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/29285147/expression-of-the-deubiquitinase-cylindromatosis-in-articular-cartilage-and-subchondral-bone-is-associated-with-the-severity-of-knee-osteoarthritis
#11
Liu Hong, Yu Shanjiang, Wang Qian, Li Chunguo, Zhou Fei, Yu Jinming, Gao Jiyou, Li Na, Li Yang, Du Feng
Cylindromatosis (CYLD) is a deubiquitinating enzyme that regulates multiple key signaling pathways involved in the pathophysiology of knee osteoarthritis (KOA). Previous studies have indicated that the expression of CYLD in the articular cartilage of patients with KOA is significantly higher than in healthy controls. However, limited data are available regarding the association between CYLD expression and the severity of KOA. The aim of the present study was to investigate the association between CYLD expression in joint tissues and the severity of KOA...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29276713/participation-in-recreational-athletics-after-operative-fixation-of-tibial-plateau-fractures-predictors-and-functional-outcomes-of-those-getting-back-in-the-game
#12
David N Kugelman, Abdullah M Qatu, Jack M Haglin, Sanjit R Konda, Kenneth A Egol
Background: Tibial plateau fractures can be devastating traumatic injuries to the knee, particularly in active athletes. Purpose/Hypothesis: The purpose of this study was to report on the return to participation in recreational athletics after operatively managed tibial plateau fractures. In addition, this study assessed factors associated with the ability to return to participation in recreational athletics after tibial plateau fractures treated with open reduction internal fixation and compared final outcomes between patients who were able to return to recreational athletics and those who could not...
December 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29249013/results-with-nine-years-mean-follow-up-on-one-hundred-and-three-kaps%C3%A2-uni-knee-arthroplasties-eighty-six-medial-and-seventeen-lateral
#13
Dominique Saragaglia, Adrien Bevand, Ramsay Refaie, Brice Rubens-Duval, Régis Pailhé
PURPOSE: The purpose of this study was to present the results of the KAPS® uni knee arthroplasty system, both mobile and fixed bearing with reference to function, alignment and complications in 103 implants with a mean follow-up of nine years. METHODS: This was a retrospective study of 103 unicompartimental knee arthroplasties in 89 patients operated on between March 2005 and March 2010. The population was composed of 50 males and 39 females, with a mean age of 70...
December 17, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29248848/the-coupled-effects-of-crouch-gait-and-patella-alta-on-tibiofemoral-and-patellofemoral-cartilage-loading-in-children
#14
Scott C E Brandon, Darryl G Thelen, Colin R Smith, Tom F Novacheck, Michael H Schwartz, Rachel L Lenhart
BACKGROUND: Elevated tibiofemoral and patellofemoral loading in children who exhibit crouch gait may contribute to skeletal deformities, pain, and cessation of walking ability. Surgical procedures used to treat crouch frequently correct knee extensor insufficiency by advancing the patella. However, there is little quantitative understanding of how the magnitudes of crouch and patellofemoral correction affect cartilage loading in gait. METHODS: We used a computational musculoskeletal model to simulate the gait of twenty typically developing children and fifteen cerebral palsy patients who exhibited mild, moderate, and severe crouch...
December 5, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29244701/reconstruction-of-a-neglected-tibial-plateau-fracture-malunion-with-an-open-book-osteotomy-a-case-report
#15
Dimitrios S Mastrokalos, Georgios N Panagopoulos, Dimitrios Koulalis, Konstantinos C Soultanis, Vasileios A Kontogeorgakos, Panayiotis J Papagelopoulos
CASE: Surgical management of tibial plateau fractures can be challenging, and complications can be devastating. We report the case of a lateral tibial plateau fracture malunion with an associated intra-articular depression, which we treated with an open-book osteotomy, obviating the need for an early corrective osteotomy or knee arthroplasty. CONCLUSION: A tibial plateau fracture malunion can be reconstructed. The surgical team should give priority to salvage options, which can obviate or delay the need for and the implications of an early total knee arthroplasty, especially in a young and active patient...
January 2017: JBJS Case Connector
https://www.readbyqxmd.com/read/29242795/head-on-allograft-transplantation-a-unique-case-report-where-a-large-piece-of-femoral-bone-was-extruded-from-one-patient-s-body-and-impaled-another-patient-s-tibia
#16
Stephen R Rossman, M Kareem Shaath, Kenneth W Graf
Introduction: Open femoral fractures are relatively uncommon occurrences, with few reports addressing their management. They are caused by high-energy mechanisms, and bone loss is a possible, but infrequent occurrence. We present a case in which two friends, 20- and 21-year-old males, were involved in a motorcycle collision. A large piece of bone was ejected from one patient's femur as a bony projectile and impaled the other patient's tibia, resulting in an open tibial plateau fracture...
September 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/29232748/-combined-posteromedial-and-anterolateral-approach-in-the-floating-position-two-column-fracture-of-the-tibia-head
#17
Maike Reul, Harm Hoekstra
Background The posterior tibial plateau is often affected in intra-articular tibial fractures. Moreover, treating these posterior fractures is recognised as an important prognostic factor. Open reduction and internal fixation of lateral and posterior two column tibial plateau fractures can be achieved via a combined reversed L-shape approach and an anterolateral approach in the floating position without intraoperative repositioning of the patient. Material and Methods The operative procedure starts in the posterior position with visualisation of the posterior column after lateral retraction of the medial head of the M...
December 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/29230821/tibial-plateau-levelling-osteotomy-locking-compression-plates-for-stabilisation-of-canine-and-feline-ilial-body-fractures
#18
J W Guthrie, S Kalff
OBJECTIVES: To evaluate the clinical and radiographic outcomes following surgical stabilisation of ilial fractures in dogs and cats using a laterally applied Synthes TPLO locking compression plate. MATERIALS AND METHODS: Medical records and radiographs of seven dogs and two cats which had undergone surgical repair of an ilial body fracture with a TPLO locking compression plate were reviewed. Long-term clinical follow-up was obtained from an owner or referring veterinarian questionnaire...
December 12, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/29229562/electromechanical-properties-of-human-osteoarthritic-and-asymptomatic-articular-cartilage-are-sensitive-and-early-detectors-of-degeneration
#19
I Hadjab, S Sim, S S Karhula, S Kauppinen, M Garon, E Quenneville, P Lavigne, P P Lehenkari, S Saarakkala, M D Buschmann
OBJECTIVE: To evaluate cross-correlations of ex vivo electromechanical properties with cartilage and subchondral bone plate thickness, as well as their sensitivity and specificity regarding early cartilage degeneration in human tibial plateau. METHOD: Six pairs of tibial plateaus were assessed ex vivo using an electromechanical probe (Arthro-BST) which measures a quantitative parameter (QP) reflecting articular cartilage compression-induced streaming potentials...
December 8, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29204489/the-cyclops-lesion-after-bicruciate-retaining-total-knee-replacement
#20
Mark A Klaassen, Jerry L Aikins
The cyclops lesion is a localized anterior arthrofibrosis most commonly seen following anterior cruciate ligament reconstruction. The lesion forms at the anterior cruciate ligament insertion creating a painful extension block between femoral intercondylar notch and tibial plateau. We present 2 cases (3 knees) in which cyclops lesions appeared atypically following bicruciate-retaining total knee replacement. Two lesions occurred in a single patient following bilateral knee replacement. One lesion occurred in an active sportswoman...
December 2017: Arthroplasty Today
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