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https://www.readbyqxmd.com/read/29457408/-double-plate-fixation-via-combined-approaches-for-the-treatment-of-old-tibial-plateau-fractures-of-schatzker-type-iv
#1
Hong-Lue Tan, Peng-Yi Dai, Wei-Feng Liu, Yan-Hao Yuan
OBJECTIVE: To explore the clinical efficacy of double-plate fixation for the treatment of old tibial plateau fractures with Schatzker type IV through anterior midline and posteromedial approaches. METHODS: From July 2013 to July 2015, 15 patients with old tibial plateau fractures were treated with internal fixation using locking reconstructive plate for the posteromedial fragment and anatomical locking plate for anteromedial fragment through antero midline and posteromedial approaches...
October 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29429245/-effects-of-expanded-anterolateral-approach-for-tibial-plateau-fractures-involved-the-posterolateral-column
#2
Y W Zhao, J B Xie, G Z Ding
Objective: To explore the short-term effects of expanded anterolateral approach in treating fracture involved the posterolateral tibial plateau. Methods: A retrospective analysis of the clinical data from 16 patients undergoing extended anterolateral approach for fracture involved the posterolateral tibial plateau in the First Affiliated Hospital of Wannan Medical College between January 2013 and July 2016 was done. The patients were treated with 3.5 mm proximal "L" type proximal tibial locking compression plate with four locking screws through the nail row technique...
January 30, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29426792/twelve-year-follow-up-of-navigated-computer-assisted-versus-conventional-total-knee-arthroplasty-a-prospective-randomized-comparative-trial
#3
Johannes Cip, Florian Obwegeser, Thomas Benesch, Christian Bach, Paul Ruckenstuhl, Arno Martin
BACKGROUND: Navigated computer-assisted total knee arthroplasty (TKA) was introduced to expedite long-term survival based on improved postoperative implantation accuracy. However, long-term outcome data after 10 years or more are rare, even available meta-analyses show controversial study results. METHODS: In a prospective randomized trial, 100 conventional TKAs (group CONV) were compared with 100 computer-assisted TKAs (group NAV) after a mean follow-up of 12 years postoperatively...
December 21, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29426012/mri-ute-t2-profile-characteristics-correlate-to-walking-mechanics-and-patient-reported-outcomes-2-years-after-acl-reconstruction
#4
Ashley A Williams, Matthew R Titchenal, Thomas P Andriacchi, Constance R Chu
OBJECTIVE: Quantitative MRI Ultrashort echo time (UTE) T2* is sensitive to cartilage deep tissue matrix changes after anterior cruciate ligament reconstruction (ACLR). This study was performed to determine whether UTE-T2* profile analyses is a useful clinical metric for assessing cartilage matrix degeneration. This work tests the hypotheses that UTE-T2* depthwise rates of change (profile slopes) correlated with clinical outcome metrics of walking mechanics and patient reported outcomes (PRO) in patients 2 years after ACLR...
February 6, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29399591/underappreciated-factors-to-consider-in-revision-anterior-cruciate-ligament-reconstruction-a-current-concepts-review
#5
REVIEW
Brendan R Southam, Angelo J Colosimo, Brian Grawe
Primary anterior cruciate ligament (ACL) reconstructions (ACLRs) are being performed with increasing frequency. While many of these will have successful outcomes, failures will occur in a subset of patients who will require revision ACLRs. As such, the number of revision procedures will continue to rise as well. While many reviews have focused on factors that commonly contribute to failure of primary ACLR, including graft choice, patient factors, early return to sport, and technical errors, this review focused on several factors that have received less attention in the literature...
January 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29399459/opening-wedge-high-tibial-osteotomy-and-anterior-cruciate-ligament-reconstruction-or-revision
#6
Davide Edoardo Bonasia, Federico Dettoni, Anna Palazzolo, Roberto Rossi
High tibial osteotomy (HTO) is a valid treatment option for young active patients with medial tibiofemoral osteoarthrosis (OA) and varus deformity. Sometimes medial OA is combined with symptomatic anterior cruciate ligament (ACL) deficiency. Although isolated HTO (with possible delayed ACL reconstruction) might be indicated in the older population, young active patients may require combined HTO and ACL reconstruction. In addition, an abnormally increased tibial slope may predispose to ACL reconstruction failure and should be addressed for a successful ACL revision...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29354410/opening-wedge-high-tibial-osteotomy-using-combined-computed-tomography-based-and-image-free-navigation-system
#7
Yasushi Akamatsu, Hideo Kobayashi, Yoshihiro Kusayama, Ken Kumagai, Tomoyuki Saito
For opening wedge high tibial osteotomy (OWHTO), it is recommended that the osteotomy line is parallel to the medial tibial posterior slope (TPS) in the sagittal view and that the alignments are simultaneously controlled in the coronal and sagittal views. Here combined computed tomography (CT)-based and image-free navigation systems were used for intraoperative reference during OWHTO. Using the CT-based navigation, 2 entry points for insertion of Kirschner wires were preoperatively set up and an accurate osteotomy plane was intraoperatively duplicated...
August 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29352685/factors-associated-with-posterior-cruciate-ligament-tightness-during-cruciate-retaining-total-knee-arthroplasty
#8
Kazuhisa Hatayama, Masanori Terauchi, Shogo Hashimoto, Kenichi Saito, Hiroshi Higuchi
BACKGROUND: The purpose of our study was to identify factors affecting posterior cruciate ligament (PCL) tightness during cruciate-retaining total knee arthroplasty. METHODS: A total of 225 varus osteoarthritic knees that underwent cruciate-retaining total knee arthroplasty were included in this study. When the flexion gap was tighter than the extension gap after all bone resection and the lift-off sign was positive during surgery, the PCL was released. The association between PCL release and potential risk factors, such as age, gender, body mass index, preoperative range of motion, anterior cruciate ligament status, preoperative hip-knee-ankle angle (HKA), decrease in posterior condylar offset, and also change in tibial posterior slope angle (TPSA) from preoperative to postoperative measurement, was evaluated by univariate and multivariate logistic regression analyses...
December 28, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29349013/open-wedge-valgus-high-tibial-osteotomy-technique-with-inverted-l-shaped-configuration
#9
Juan C Monllau, Juan I Erquicia, Federico Ibañez, Maximiliano Ibañez, Pablo E Gelber, Angel Masferrer-Pino, Xavier Pelfort
High tibial osteotomy (HTO) is a useful alternative in the treatment of symptomatic varus malalignment. However, among its drawbacks is the tendency to decrease patellar height and increase the posterior tibial slope. The increased tibial slope increases anterior cruciate ligament tension and may compromise its function. On the other hand, patella baja often causes anterior knee pain and, over time, may favor degeneration of the patellofemoral joint. The aim of this study is to describe a technical modification of the standard open-wedge HTO...
December 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29330345/a-computational-simulation-study-to-determine-the-biomechanical-influence-of-posterior-condylar-offset-and-tibial-slope-in-cruciate-retaining-total-knee-arthroplasty
#10
K-T Kang, Y-G Koh, J Son, O-R Kwon, J-S Lee, S K Kwon
OBJECTIVES: Posterior condylar offset (PCO) and posterior tibial slope (PTS) are critical factors in total knee arthroplasty (TKA). A computational simulation was performed to evaluate the biomechanical effect of PCO and PTS on cruciate retaining TKA. METHODS: We generated a subject-specific computational model followed by the development of ± 1 mm, ± 2 mm and ± 3 mm PCO models in the posterior direction, and -3°, 0°, 3° and 6° PTS models with each of the PCO models...
January 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29327559/-combined-surgical-approaches-in-the-treatment-of-complex-tibial-plateau-fractures
#11
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/29311146/impact-of-broad-regulatory-regions-on-gdf5-expression-and-function-in-knee-development-and-susceptibility-to-osteoarthritis
#12
Steve K Pregizer, Ata M Kiapour, Mariel Young, Hao Chen, Michael Schoor, Zun Liu, Jiaxue Cao, Vicki Rosen, Terence D Capellini
OBJECTIVES: Given the role of growth and differentiation factor 5 (GDF5) in knee development and osteoarthritis risk, we sought to characterise knee defects resulting from Gdf5 loss of function and how its regulatory regions control knee formation and morphology. METHODS: The brachypodism (bp) mouse line, which harbours an inactivating mutation in Gdf5, was used to survey how Gdf5 loss of function impacts knee morphology, while two transgenic Gdf5 reporter bacterial artificial chromosome mouse lines were used to assess the spatiotemporal activity and function of Gdf5 regulatory sequences in the context of clinically relevant knee anatomical features...
January 8, 2018: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/29304963/editorial-commentary-are-knee-patellofemoral-surgeons-overestimating-their-anteromedialization-measurements
#13
EDITORIAL
Jack Farr
Anteromedialization as originally described by Fulkerson has become an important tool in the armamentarium of patellofemoral surgeons. The goal is to combine the unloading of tibial tubercle anteriorization and the realignment of tubercle medialization. The classic teaching, that the steepest slope of 60° allows approximately 9 mm of medialization with 15 mm of unloading anteriorization, is now challenged, and we may not be achieving the amount of anteriorization as preoperatively planned. Because failure to unload the patellofemoral compartment may adequately compromise surgical outcomes, thorough re-evaluation of anteromedialization measurement is warranted...
January 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
#14
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
#15
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/29244525/20-year-outcomes-of-anterior-cruciate-ligament-reconstruction-with-hamstring-tendon-autograft-the-catastrophic-effect-of-age-and-posterior-tibial-slope
#16
Lucy J Salmon, Emma Heath, Hawar Akrawi, Justin P Roe, James Linklater, Leo A Pinczewski
BACKGROUND: No well-controlled studies have compared the long-term outcome of anterior cruciate ligament (ACL) reconstruction with hamstring tendon autograft between adolescents and adults. Increased posterior tibial slopes (PTSs) have been reported in the ACL-injured versus controls, but the effect of PTS on the outcome after reconstruction is relatively unexplored. PURPOSE: To compare the prospective longitudinal outcome of "isolated" ACL ruptures treated with anatomic endoscopic ACL reconstruction using hamstring tendon autograft over 20 years in adolescent and adult cohorts and to examine factors for repeat ACL injury...
December 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29229417/diagnostic-value-of-computed-tomography-and-risk-factors-for-lateral-hinge-fracture-in-the-open-wedge-high-tibial-osteotomy
#17
O-Sung Lee, Yong Seuk Lee
PURPOSE: The purposes of this study were to evaluate (1) the disparity of detection of lateral hinge fracture (LHF) between postoperative simple radiography and high-resolution computed tomography (CT) and affecting factors of LHF and (2) whether generally recommended postoperative rehabilitation protocols are appropriate according to the type of LHF. METHODS: From 2014 to 2015, patients who underwent primary open wedge high tibial osteotomy (OWHTO) for isolated medial compartment osteoarthritis of the knee joint were retrospectively enrolled...
December 8, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29225019/primary-versus-revision-anterior-cruciate-ligament-reconstruction-patient-demographics-radiographic-findings-and-associated-lesions
#18
Justin J Mitchell, Mark E Cinque, Grant J Dornan, Lauren M Matheny, Chase S Dean, Brad Kruckeberg, Gilbert Moatshe, Jorge Chahla, Robert F LaPrade
PURPOSE: The purpose of this study was to evaluate the differences in intra-articular pathology, demographic characteristics, and radiographic characteristics of the knee associated with primary anterior cruciate ligament reconstruction (ACLR) versus revision ACLR at the time of initial presentation with either a native anterior cruciate ligament tear or an anterior cruciate ligament graft tear. Secondarily, we aimed to investigate risk factors for concomitant medial and lateral meniscal tears and cartilage injuries at the time of ACLR...
December 7, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29222607/static-and-fatigue-strength-of-a-novel-anatomically-contoured-implant-compared-to-five-current-open-wedge-high-tibial-osteotomy-plates
#19
Arnaud Diffo Kaze, Stefan Maas, James Belsey, Alexander Hoffmann, Dietrich Pape
BACKGROUND: The purpose of the present study was to compare the mechanical static and fatigue strength of the size 2 osteotomy plate "Activmotion" with the following five other common implants for the treatment of medial knee joint osteoarthritis: the TomoFix small stature, the TomoFix standard, the Contour Lock, the iBalance and the second generation PEEKPower. METHODS: Six fourth-generation tibial bone composites underwent a medial open-wedge high tibial osteotomy (HTO), according to standard techniques, using size 2 Activmotion osteotomy plates...
December 8, 2017: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29181560/stability-and-alignment-do-not-improve-by-using-patient-specific-instrumentation-in-total-knee-arthroplasty-a-randomized-controlled-trial
#20
Nienke M Kosse, Petra J C Heesterbeek, Janneke J P Schimmel, Gijs G van Hellemondt, Ate B Wymenga, Koen C Defoort
PURPOSE: The primary aim of the study was to examine stability and alignment after total knee arthroplasty (TKA) using patient-specific instrumentation (PSI) and conventional instrumentation (CI). The hypothesis was that stability and alignment would be better using PSI than CI, 12 months postoperatively. The secondary aim included the evaluation of clinical outcomes after TKA. METHODS: In this prospective randomized controlled trial, 42 patients with knee osteoarthritis received a Genesis II PS prosthesis with either PSI or CI...
November 28, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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