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https://www.readbyqxmd.com/read/28712797/evaluation-of-a-patient-decision-aid-for-unicompartmental-or-total-knee-arthroplasty-for-medial-knee-osteoarthritis
#1
Christopher de Jesus, Dawn Stacey, Geoffrey F Dervin
BACKGROUND: Many patients with isolated medial compartment osteoarthritis are candidates for either unicompartmental knee arthroplasty (UKA) or total knee arthroplasty (TKA). A novel patient decision aid (PDA) was developed to educate patients on both interventions and prepare them for making the decision with their surgeon. The study objective was to evaluate the acceptability and usefulness of a PDA for informing and helping patients reach a surgical preference without increasing decisional conflict...
June 17, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28697861/regional-femoral-and-tibial-radiolucency-in-cemented-unicompartmental-knee-arthroplasty-and-the-relationship-to-functional-outcomes
#2
Laura J Kleeblad, Jelle P van der List, Hendrik A Zuiderbaan, Andrew D Pearle
BACKGROUND: Femoral and tibial radiolucent lines (RLL) after unicompartmental knee arthroplasty (UKA) can be categorized in physiological and pathological radiolucencies. Although physiological tibial radiolucency is assessed extensively in literature, studies reporting femoral radiolucency are lacking. Therefore, a retrospective study was performed to assess physiological femoral RLL and its relationship to short-term functional outcomes. METHODS: A total of 352 patients were included who underwent robotic-assisted medial UKA surgery and received a fixed-bearing metal-backed cemented medial UKA...
June 19, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28657565/robotic-arm-assisted-partial-knee-arthroplasty-a-single-centre-experience
#3
Andrea Marcovigi, Francesco Zambianchi, Dario Sandoni, Elisa Rivi, Fabio Catani
BACKGROUND AND AIM OF THE WORK: UKA has proven to be an effective surgical procedure, but its survivorship is still negatively affected by inaccuracy in component component positioning, implant and limb alignment. Robotic surgery has been introduced in order to minimize such technical errors. The aim of the present paper was to evaluate clinical and surgical outcomes after a 3 years' experience of robotic assisted UKA with the Mako Robotic Arm. METHODS: Seventy-three patients undergoing  UKA with robotic instrumentation (65 medial UKAs, 8 lateral UKAs) and with a clinical follow-up of 3 -37 months were included in the present study...
June 7, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/28657563/medial-vs-lateral-unicompartmental-knee-arthrroplasty-clinical-results
#4
Andrea Fiocchi, Vincenzo Condello, Vincenzo Madonna, M Bonomo, Claudio Zorzi
Unicompartmental Knee Arthroplasty (UKA) is a common procedure for the management of isolated osteoarthritis. UKA is considered less invasive compared to total knee arthroplasty, associated with less operative time, blood loss and faster recovery. Isolated lateral osteoarthritis is a relatively uncommon clinical problem, with an incidence about ten times lower than the medial compartment. In fact, lateral UKA are about 5-10% of the total amount of the UKAs. In addition, it's historically considered more challenging and with poorer results...
June 7, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/28648710/preoperative-interventions-and-charges-in-the-2-year-period-before-unicompartmental-knee-arthroplasty-what-happens-before-surgery
#5
Alexander T Bradley, Jeremiah R Cohen, Jay R Lieberman
BACKGROUND: This study investigated preoperative interventions and their costs in the 2-year period before a patient undergoing a unicompartmental knee arthroplasty (UKA). METHODS: A retrospective cohort analysis of patients undergoing UKA between 2009 and 2011 was conducted using the PearlDiver Patient Record Database to track inpatient and outpatient billing records. RESULTS: One thousand eight hundred forty-one patients from Medicare and 4704 patients from United Healthcare underwent UKA between 2009 and 2011...
June 3, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28641970/the-interaction-of-caseload-and-usage-in-determining-outcomes-of-unicompartmental-knee-arthroplasty-a-meta-analysis
#6
Thomas W Hamilton, James M Rizkalla, Leonidas Kontochristos, Barbara E Marks, Stephen J Mellon, Christopher A F Dodd, Hemant G Pandit, David W Murray
BACKGROUND: Outcomes after unicompartmental knee arthroplasty (UKA) are variable and influenced by caseload (UKA/y) and usage (percentage of knee arthroplasty that are UKA), which relates to indications. This meta-analysis assesses the relative importance of these factors. METHODS: MEDLINE (Ovid), Embase (Ovid), and Web of Science (ISI) were searched for consecutive series of cemented Phase 3 Oxford medial UKA. The primary outcome was revision rate/100 observed component years (% pa) with subgroup analysis based on caseload and usage...
May 11, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28602533/outpatient-and-inpatient-unicompartmental-knee-arthroplasty-procedures-have-similar-short-term-complication-profiles
#7
Patawut Bovonratwet, Nathaniel T Ondeck, Vineet Tyagi, Stephen J Nelson, Lee E Rubin, Jonathan N Grauer
BACKGROUND: Advances in surgical techniques and anesthesia have made performing unicompartmental knee arthroplasty (UKA) in the outpatient setting a possibility. The touted benefits of outpatient surgery include higher patient satisfaction and reduced costs. However, detailed information on the perioperative outcomes of outpatient compared with inpatient UKA in a large, national patient population in the United States has never been reported. The present study compares perioperative complications between outpatient and inpatient UKAs in the National Surgical Quality Improvement Program database...
May 18, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28594499/medial-unicompartmental-knee-arthroplasty
#8
Andrew Barrister Richardson, Michael J Morris
Unicompartmental knee arthroplasty (UKA) has substantial benefits, including lower perioperative morbidity and earlier recovery, compared with total knee arthroplasty. The traditionally strict indications for UKA have been challenged by studies that expanded the indications based on a diagnosis of anteromedial osteoarthritis of the knee and demonstrated successful outcomes. The Nuffield criteria no longer prohibit patients from UKA based on age, obesity, anterior knee pain, or involvement of the patellofemoral joint...
February 15, 2017: Instructional Course Lectures
https://www.readbyqxmd.com/read/28592075/-influence-of-tibial-component-slope-on-short-term-clinical-outcome-for-oxford-unicompartmental-knee-arthroplasty
#9
L Y Ma, W S Guo, Q D Zhang
Objective: To investigate the effects of tibial component slope change after microplasty (MP) Oxford unicompartmental knee arthroplasty (UKA) on short-term clinical outcome. Methods: A total of 116 patients(128 UKAs)underwent UKA in Department of Orthopaedic Surgery of China-Japan Friendship Hospital between January 2014 and December 2015 were retrospectively reviewed. Totally 100 patients (108 UKAs) were finally included in the study. There were 31 males and 69 females, aging from 47 to 90 years (mean 67.2 years)...
June 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28592073/-influence-of-patellofemoral-joint-degeneration-on-outcome-of-medial-unicompartmental-knee-arthroplasty
#10
B Y Xu, B C Ji, W T Guo, W B Mu, L Cao
Objective: To evaluate the influence of patellofemoral joint degeneration and pre-operative pain location on the outcome of medial Oxford unicompartmental knee arthroplasty (UKA). Methods: A total of 58 patients (58 knees) with medial Oxford UKA had been performed for medial osteoarthritis from March 2013 to July 2014 in Department of Orthopaedic Surgery at First Teaching Hospital of Xinjiang Medical University were retrospective reviewed. There were 24 males and 34 females, the age from 43 to 87 years with the mean age was 68...
June 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28579132/optimization-of-sagittal-and-coronal-planes-with-robotic-assisted-unicompartmental-knee-arthroplasty
#11
Michael A Gaudiani, Benedict U Nwachukwu, Jayesh V Baviskar, Mrinal Sharma, Anil S Ranawat
BACKGROUND: One of the anatomic goals of total knee arthroplasty (TKA) is optimizing in the coronal and sagittal plane. Accurate alignments of both planes have been correlated to functional outcome and range of motion. There is a paucity of evidence on the accuracy of unicompartmental knee arthroplasty (UKA) in balancing biplanar knee alignment - specifically sagittal plane alignment. Because robotic assisted UKA has an advantage of more accurately manipulating sagittal plane for optimal alignment and kinematics based on pre-operative and intraoperative CT planning we assessed the accuracy...
June 1, 2017: Knee
https://www.readbyqxmd.com/read/28578846/the-congruence-and-joint-space-width-of-the-lateral-compartment-can-be-restored-after-medial-unicompartmental-knee-arthroplasty
#12
Fei Cao, Haibo Si, Yi Zeng, Canfeng Li, Yuangang Wu, Bin Shen
BACKGROUND: Progressive degenerative changes in the lateral compartment of the knee after medial unicompartmental arthroplasty (UKA) remain a main cause of revision surgery. The purpose of this study is to evaluate whether tibiofemoral congruence and joint space width (JSW) of the lateral compartment are improved after medial UKA using traditional instruments. METHODS: We retrospectively analyzed the preoperative and postoperative lateral tibiofemoral congruence using validated software that evaluates the geometric relationship between surfaces and calculates a congruence index (CI)...
April 27, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28578839/the-combination-of-preoperative-bone-marrow-lesions-and-partial-thickness-cartilage-loss-did-not-result-in-inferior-outcomes-after-medial-unicompartmental-knee-arthroplasty
#13
Keith R Berend, Adolph V Lombardi, Cale A Jacobs
BACKGROUND: The purpose of this study is to compare patient-reported outcomes and revision rates between medial unicompartmental knee arthroplasty (UKA) patients based on the presence of medial bone marrow lesions (BMLs) and/or partial- vs full-thickness cartilage loss. METHODS: BMLs were graded on preoperative magnetic resonance imaging (MRI) findings from 174 UKAs performed between 2009 and 2013 using the MRI Osteoarthritis Knee Score criteria by a single evaluator blinded to the patient's outcome...
May 11, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28577508/change-in-gait-after-high-tibial-osteotomy-a-systematic-review-and-meta-analysis
#14
Seung Hoon Lee, O-Sung Lee, Seow Hui Teo, Yong Seuk Lee
We conducted a meta-analysis to analyze how high tibial osteotomy (HTO) changes gait and focused on the following questions: (1) How does HTO change basic gait variables? (2) How does HTO change the gait variables in the knee joint? Twelve articles were included in the final analysis. A total of 383 knees was evaluated. There were 237 open wedge (OW) and 143 closed wedge (CW) HTOs. There were 4 level II studies and 8 level III studies. All studies included gait analysis and compared pre- and postoperative values...
May 26, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28571920/mobile-bearing-medial-unicompartmental-knee-arthroplasty-in-patients-whose-lifestyles-involve-high-degrees-of-knee-flexion-a-10-14year-follow-up-study
#15
Won Sik Choy, Kwang Won Lee, Ha Yong Kim, Kap Jung Kim, Young Sub Chun, Dae Suk Yang
BACKGROUND: Because Asian populations have different lifestyles, such as squatting and sitting on the floor, from those of Western populations, it is possible that the clinical results and survival rate of unicompartmental knee arthroplasty (UKA) for Asian patients may be different. This study described outcomes of mobile bearing medial UKA for Korean patients. METHODS: A total of the 164 knees treated with mobile bearing UKAs in 147 patients (14 males and 133 females) were reviewed...
May 29, 2017: Knee
https://www.readbyqxmd.com/read/28566398/discharge-on-the-day-of-surgery-following-unicompartmental-knee-arthroplasty-within-the-united-kingdom-nhs
#16
B Bradley, S Middleton, N Davis, M Williams, M Stocker, M Hockings, D L Isaac
AIMS: Unicompartmental knee arthroplasty (UKA) has been successfully performed in the United States healthcare system on outpatients. Despite differences in healthcare structure and financial environment, we hypothesised that it would be feasible to replicate this success and perform UKA with safe day of surgery discharge within the NHS, in the United Kingdom. This has not been reported in any other United Kingdom centres. PATIENTS AND METHODS: We report our experience of implementing a pathway to allow safe day of surgery discharge following UKA...
June 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28559197/anteroposterior-rotational-references-of-the-tibia-for-medial-unicompartmental-knee-arthroplasty-in-japanese-patients
#17
Ichiro Tsukamoto, Masao Akagi, Shigeshi Mori, Shinji Inoue, Shigeki Asada, Fuminori Matsumura
BACKGROUND: In unicompartmental knee arthroplasty (UKA), there is no consensus regarding how to determine the anteroposterior (AP) reference of the tibia. A number of surgeons in Japan perform the sagittal saw cut using the medial intercondylar ridge (MIR) of the tibia according to surgical manuals. However, there is no theoretical basis for this practice. METHODS: Preoperative computed tomography data from 32 lower limbs of 31 Japanese patients who received UKA were used...
May 4, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28545177/mid-term-results-of-oxford-medial-unicompartmental-knee-arthroplasty-in-young-asian-patients-less-than-60-years-of-age-a-minimum-5-year-follow-up
#18
Yeong-Joon Kim, Bu-Hwan Kim, Seong-Ho Yoo, Suk-Woong Kang, Chang-Hun Kwack, Moo-Ho Song
Purpose: The purpose of this study was to evaluate the efficacy of unicompartmental knee arthroplasty (UKA) in young active Asian patients by analyzing clinical outcomes, complications and survival rates. Materials and Methods: Eighty-two knees were evaluated with a minimum follow-up of 5 years after Oxford phase 3 UKA in patients less than 60 years of age at the time of surgery. Their mean age was 54.7 years (range, 44 to 59 years). The mean follow-up period was 8...
June 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28534289/exposure-of-articular-chondrocytes-to-wear-particles-induces-phagocytosis-differential-inflammatory-gene-expression-and-reduced-proliferation
#19
Michael D Kurdziel, Meagan Salisbury, Lige Kaplan, Tristan Maerz, Kevin C Baker
The production of wear debris particulate remains a concern due to its association with implant failure through complex biologic interactions. In the setting of unicompartmental knee arthroplasty (UKA), damage and wear of the components may introduce debris particulate into the adjacent, otherwise, healthy compartment. The purpose of this study was to investigate the in vitro effect of polymeric and metallic wear debris particles on cell proliferation, extracellular matrix regulation, and phagocytosis index of normal human articular chondrocytes (nHACs)...
July 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28488164/up-to-twelve-year-follow-up-of-the-oxford-phase-three-unicompartmental-knee-replacement-in-china-seven-hundred-and-eight-knees-from-an-independent-centre
#20
Huaming Xue, Yihui Tu, Tong Ma, Tao Wen, Tao Yang, Minwei Cai
PURPOSE: There have been few large sample studies reporting the midterm outcome of Oxford phase 3 unicompartmental knee arthroplasty (UKA) in Asian patients. METHODS: The study included 708 consecutive medial Oxford UKAs between February 2005 and May 2014 in Chinese patients. All cases were performed for the recommended indications with a minimally-invasive surgical technique. The functional and radiological outcomes were subsequently examined. In particular, we divided patients into the spontaneous osteonecrosis of the knee (SONK) group and the osteoarthritis (OA) group...
May 10, 2017: International Orthopaedics
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