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https://www.readbyqxmd.com/read/28109553/letter-to-the-editor-cementing-the-femoral-component-in-total-knee-arthroplasty-which-technique-is-the-best-by-micha%C3%A3-l-vaninbroukx-et-al
#1
LETTER
Martin Schwarze, Virag Borsai, Rudi Georg Bitsch, Johannes Adrian Eckert, Sebastian Jäger
No abstract text is available yet for this article.
January 18, 2017: Knee
https://www.readbyqxmd.com/read/28081898/good-functional-results-following-high-tibial-opening-wedge-osteotomy-of-knees-with-medial-osteoarthritis-a-prospective-study-with-a-mean-of-8-3years-of-follow-up
#2
Arne Ekeland, Tor Kjetil Nerhus, Sigbjørn Dimmen, Elisabeth Thornes, Stig Heir
BACKGROUND: To report time dependent functional improvement and predictive risk factors for failure when the load in varus knees with medial osteoarthritis is shifted from the medial to the lateral knee compartment. METHODS: Forty-nine consecutive patients (52 knees), mean age 47 (31-64) years, underwent a high tibial opening-wedge valgus osteotomy stabilized with a Puddu plate and bone grafting. The patients were evaluated with the Knee Injury and Osteoarthritis Outcome Score (KOOS) preoperatively and at three and six months, one, two, five and 10years postoperatively with a mean follow-up time of 8...
January 9, 2017: Knee
https://www.readbyqxmd.com/read/28081897/the-incidence-and-impact-of-arthroscopy-in-the-year-prior-to-total-knee-arthroplasty
#3
S B Barton, G J McLauchlan, S J Canty
BACKGROUND: Prior knee surgery an arthroscopy is known to increase complications and re-operations in subsequent total knee arthroplasty (TKA). We set out to examine the time dependant effect of arthroscopy on Patient Reported Outcome Measures following subsequent TKA. METHODS: A retrospective review of theatre and clinical records identified 186 patients who underwent TKA within a year of arthroscopy (2009-2013). Oxford knee score (OKS) data was compared with a published cohort from the same department (1708 patients)...
January 9, 2017: Knee
https://www.readbyqxmd.com/read/28040320/semimembranosus-tenosynovitis-diagnosis-and-management-of-a-commonly-missed-cause-of-posteromedial-knee-pain
#4
Joel K Melton, Arman Memarzadeh, William H Dunbar, Mervyn J Cross
BACKGROUND: In orthopedic and sports medicine literature there is minimal information regarding accurate diagnosis and the treatment options for tenosynovitis of the distal semimembranosus tendon. After reviewing the literature, the authors question both the etiology and treatment of this condition. Previous descriptions have associated the condition primarily with the endurance athlete but we have noted multiple cases in which this is a condition common to the 'sprinter' as well. There has been very little mention of this condition in recent literature but the most recent complete description of operative treatment for this condition recommends both tendon transfer and concomitant arthroscopy...
December 28, 2016: Knee
https://www.readbyqxmd.com/read/27998667/validity-and-reliability-of-a-novel-instrumented-one-legged-hop-test-in-patients-with-knee-injuries
#5
Karin Mani, William F Brechue, Bernd Friesenbichler, Nicola A Maffiuletti
BACKGROUND: Conventional one-legged hop tests simply evaluate the total hop distance, thus neglecting important temporal and spatial parameters related to the strategy of execution, such as foot contact time. AIM: To examine the validity and reliability of an instrumented one-legged hop test, the "four hops, three contacts" (4H3C) test, in patients with knee injuries. METHODS: The 4H3C test consists of four consecutive one-legged hops, of which individual hop distance and foot contact time are recorded by a validated floor-based photocell system...
December 17, 2016: Knee
https://www.readbyqxmd.com/read/27979688/the-use-of-the-core-outcome-measures-index-comi-in-patients-undergoing-total-knee-replacement
#6
Franco M Impellizzeri, Michael Leunig, Stefan Preiss, Thomas Guggi, Anne F Mannion
BACKGROUND: The Core Outcome Measure Index (COMI) is a very short outcome instrument used in spine patients. The aim of this study was to examine the utility of a knee version of the COMI in patients undergoing total knee arthroplasty (TKA) by assessing the reproducibility, construct and discriminant validity, and responsiveness. METHODS: Preoperatively, 224 patients completed the Oxford Knee Score (OKS), EuroQoL (EQ-5D) and the COMI-Knee; 189 (84) % also completed the questionnaires at follow-up and 73 patients completed preoperatively the COMI-knee twice...
December 12, 2016: Knee
https://www.readbyqxmd.com/read/27955813/gap-formation-following-primary-repair-of-the-anterior-cruciate-ligament-a-biomechanical-evaluation
#7
Jelle P van der List, Gregory S DiFelice
BACKGROUND: Historically, inconsistent and unpredictable results of open primary anterior cruciate ligament (ACL) repair were reported. Recently, however, good results of arthroscopic primary ACL repair of proximal tears have been reported. Purpose of this study was to assess the direct postoperative gap formation and maximum failure load following simulated knee motion after primary ACL repair. METHODS: Six matched-paired human cadaveric knees (mean age: 52years, range: 48 to 56years) were used...
December 7, 2016: Knee
https://www.readbyqxmd.com/read/27955812/in-response-to-the-article-published-by-fukaya-et-al-entitled-relationships-between-the-center-of-pressure-and-the-movements-of-the-ankle-and-knee-joints-during-the-stance-phase-in-patients-with-severe-medial-knee-osteoarthritis
#8
LETTER
https://www.readbyqxmd.com/read/27931954/younger-patients-have-less-severe-radiographic-disease-and-lower-reported-outcome-scores-than-older-patients-undergoing-total-knee-arthroplasty
#9
Jacob Haynes, Adam Sassoon, Denis Nam, Loren Schultz, James Keeney
BACKGROUND: Total knee arthroplasty (TKA) has been successful for many younger patients, but some experience residual symptoms or dissatisfaction. We performed this study to assess the relationship between radiographic disease severity and patient demographic features on patient reported TKA outcome scores. METHODS: We compared 100 TKAs performed for 82 patients ≤55years old with 100 gender-matched TKAs performed for 85 patients between 65 and 75years old. These study cases represented 25% and 21%, respectively, of TKAs performed between January 2006 and June 2011...
December 5, 2016: Knee
https://www.readbyqxmd.com/read/27923627/outcomes-of-cementless-unicompartmental-and-total-knee-arthroplasty-a-systematic-review
#10
REVIEW
Jelle P van der List, Dana L Sheng, Laura J Kleeblad, Harshvardhan Chawla, Andrew D Pearle
BACKGROUND: Aseptic loosening is a common failure mode in cemented unicompartmental knee arthroplasty (UKA) and total knee arthroplasty (TKA). This led to the development of cementless designs but the historical outcomes were poor. Recent developments in cementless designs have improved outcomes, but the current status is unknown. Therefore, a systematic review was performed to assess recent outcomes of cementless knee arthroplasty. METHODS: A search was performed using PubMed, Embase and Cochrane systems and national registries for studies reporting outcomes since 2005...
December 3, 2016: Knee
https://www.readbyqxmd.com/read/27923626/limitations-in-predicting-outcome-following-primary-acl-reconstruction-with-single-bundle-hamstring-autograft-a-systematic-review
#11
REVIEW
Vincent Vg An, Corey Scholes, Vikram A Mhaskar, William Hadden, David Parker
BACKGROUND: Anterior cruciate ligament reconstruction (ACLR) is one of the most well studied and performed procedures in the world. Thus, it would be useful to develop a tool to predict patient outcomes post-operatively to allow clinicians to optimise management. PURPOSE: To identify and summarise factors predictive of graft failure and patient-reported outcome (PROM) measures at minimum two years after ACLR with single-bundle quadruple hamstring autograft via the anteromedial portal technique...
December 3, 2016: Knee
https://www.readbyqxmd.com/read/27923625/verifying-the-equivalence-of-representations-of-the-knee-joint-moment-vector-from-a-drop-vertical-jump-task
#12
LETTER
Julia K Nichols, Oliver M O'Reilly
Biomechanics software programs, such as Visual3D, Nexus, Cortex, and OpenSim, have the capability of generating several distinct component representations for joint moments and forces from motion capture data. These representations include those for orthonormal proximal and distal coordinate systems and a non-orthogonal joint coordinate system. In this article, a method is presented to address the challenging problem of evaluating and verifying the equivalence of these representations. The method accommodates the difficulty that there are two possible sets of non-orthogonal basis vectors that can be used to express a vector in the joint coordinate system and is illuminated using motion capture data from a drop vertical jump task...
December 3, 2016: Knee
https://www.readbyqxmd.com/read/27923624/a-novel-3d-approach-for-determination-of-frontal-and-coronal-plane-tibial-slopes-from-mr-imaging
#13
Amirhesam Amerinatanzi, Rodney Summers, Kaveh Ahmadi, Vijay K Goel, Timothy E Hewett, Edward Nyman
BACKGROUND: The proximal tibia is geometrically complex, asymmetrical, and variable, is heavily implicated in arthrokinematics of the knee joint, and thus a contributor to knee pathologies such as non-contact anterior cruciate ligament injury. Medial, lateral, and coronal tibial slopes are anatomic parameters that may increase predisposition to knee injuries, but the extent to which each contributes has yet to be fully realized. Previously, two-dimensional methods have quantified tibial slopes, but more reliable 3D methods may prove advantageous...
December 3, 2016: Knee
https://www.readbyqxmd.com/read/27923623/staged-total-knee-arthroplasty-for-bilateral-complex-knee-deformities-from-kashin-beck-disease-and-skeletal-dysplasia
#14
Ming Ling, Xueyuan Wu, Yanhai Chang, Xianghui Dong, Zhengming Sun, Li Ling, Shixun Wu, Bo Yang
This study reported two cases of patients with Grade III Kashin-Beck disease (KBD) with skeletal dysplasia concomitant with complex knee deformity and functional limitation treated by staged total knee arthroplasty (TKA). Detailed pre-operative planning, bone resection, and soft tissue balancing in affected knees were performed in the surgeries in this report. The results demonstrated that TKA could correct lower limb alignment, alleviate knee pain, improve function, and provide good quality of life in people with KBD...
December 3, 2016: Knee
https://www.readbyqxmd.com/read/27923622/factors-predicting-quadriceps-femoris-muscle-atrophy-during-the-first-12weeks-following-anterior-cruciate-ligament-reconstruction
#15
T Grapar Žargi, Matej Drobnič, Renata Vauhnik, Jadran Koder, Alan Kacin
BACKGROUND: Factors predicting quadriceps femoris muscle (QF) atrophy during the early period after arthroscopic ACL reconstruction have not been extensively studied. It is also yet to be confirmed whether muscle atrophy is a key determinant of postoperative QF weakness. METHODS: Mean changes in QF volume, MVIC torque and isometric endurance time were analysed in 25 patients prior to and at four and 12 weeks after surgery. A multivariable regression model of change in QF volume was made from combination of several parameters of preoperative QF size and strength and postoperative joint recovery...
December 3, 2016: Knee
https://www.readbyqxmd.com/read/27919673/proximal-tibial-anterior-open-wedge-oblique-osteotomy-a-novel-technique-to-correct-genu-recurvatum
#16
Tae Woo Kim, Sahnghoon Lee, Jung-Ro Yoon, Hyuk-Soo Han, Myung Chul Lee
BACKGROUND: For successful acute correction of genu recurvatum, accurate correction of plateau angle, restoration of anatomical axis, rigid fixation, and preservation of patellar height are essential. However, a surgical treatment that satisfies all these conditions has not yet been established. The purpose of this study was to evaluate the novel technique of proximal tibial anterior open-wedge oblique osteotomy (PT-AOWOO) for the treatment of genu recurvatum. METHODS: Five patients with genu recurvatum underwent PT-AOWOO from 2008 to 2013...
December 2, 2016: Knee
https://www.readbyqxmd.com/read/27919672/a-study-of-pre-operative-presence-of-micro-organisms-in-affected-knee-joints-of-rheumatoid-arthritis-patients-who-need-total-knee-arthroplasty
#17
Jiang-Ming Luo, Lin Guo, Hao Chen, Peng-Fei Yang, Ran Xiong, Yang Peng, Liu Yang
BACKGROUND: To evaluate, by way of intraoperative tissue culture and pathological study, the pre-operative presence of micro-organisms in knee joints of patients with rheumatoid arthritis (RA) who need total knee arthroplasty (TKA). METHODS: From November 2012 to January 2014, 47 patients with RA (53 knees) who needed TKA were included in this study. Patients received routine pre-operative examination and joint fluid routine and culture. Each RA patient was match-paired with one osteoarthritis (OA) patient...
December 2, 2016: Knee
https://www.readbyqxmd.com/read/27919671/supracondylar-femoral-osteotomy-and-knee-joint-replacement-during-the-same-surgical-procedure-in-a-type-a-haemophiliac-patient-with-knee-flexion-deformity-and-ankylosis
#18
Jose Luis Osma Rueda, Alejandra Oliveros Vargas, Cristian David Sosa
BACKGROUND: Haemophilia A is the cause of diverse musculoskeletal disorders such as ankylosis, arthritis and associated angular deformity. There are few reported cases in patients with haemophilia A in which simultaneous supracondylar femoral osteotomy and knee joint replacement has been performed to treat knee angular deformity and ankylosis. Here we present the case of an 18year old male patient, with an evolution of two years, who was unable to walk due to the presence of an untreated supracondylar fracture in the left femur and ipsilateral haemophilic arthropathy which led him to develop an ankylosis in flexion close to 70°...
December 2, 2016: Knee
https://www.readbyqxmd.com/read/27916580/annual-revision-rates-of-partial-versus-total-knee-arthroplasty-a-comparative-meta-analysis
#19
REVIEW
Harshvardhan Chawla, Jelle P van der List, Alexander B Christ, Maximiliano R Sobrero, Hendrik A Zuiderbaan, Andrew D Pearle
BACKGROUND: Utilization of unicompartmental knee arthroplasty (UKA) and patellofemoral arthroplasty (PFA) as alternatives to total knee arthroplasty (TKA) for unicompartmental knee osteoarthritis (OA) has increased. However, no single resource consolidates survivorship data between TKA and partial resurfacing options for each variant of unicompartmental OA. This meta-analysis compared survivorship between TKA and medial UKA (MUKA), lateral UKA (LUKA) and PFA using annual revision rate as a standardized metric...
December 1, 2016: Knee
https://www.readbyqxmd.com/read/27916579/distal-patellar-tendon-avulsion-in-association-with-high-energy-knee-trauma-a-case-series-and-review-of-the-literature
#20
Brian Capogna, Eric Strauss, Sanjit Konda, Alan Dayan, Michael Alaia
BACKGROUND: Patellar tendon rupture is rare in the general population. Typically, failure occurs proximally or at the mid-substance. Distal avulsion from the tibial tubercle in adults is rare and not well described in the orthopedic literature. METHODS: We present the largest series of patients with distal patellar tendon injury with associated multi-ligamentous disruption of the knee. A series of six patients with distal patellar tendon avulsion were identified at a single institution...
December 1, 2016: Knee
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