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https://www.readbyqxmd.com/read/29325840/early-comparative-outcomes-of-unicompartmental-and-total-knee-arthroplasty-in-severely-obese-patients
#1
Zachary C Lum, David A Crawford, Adolph V Lombardi, Jason M Hurst, Michael J Morris, Joanne B Adams, Keith R Berend
BACKGROUND: Medial unicompartmental knee arthroplasty (UKA) may have advantages over total knee arthroplasty (TKA) in the setting of obesity. There has been no direct comparison between the two cohorts. This study compares outcomes and complications of severely obese patients undergoing medial UKA versus TKA. METHODS: Six hundred and fifty medial UKA and 1300 TKA were performed in patients with BMI >35kg/m2 (mean 41kg/m2) between 2007 and 2012. Pre- and postoperative ROM, Knee Society scores, perioperative factors, complications and reoperations were compared...
January 8, 2018: Knee
https://www.readbyqxmd.com/read/29305449/mid-term-results-of-lateral-unicondylar-mobile-bearing-knee-arthroplasty-a-multicentre-study-of-363-cases
#2
T Walker, N Zahn, T Bruckner, M R Streit, G Mohr, P R Aldinger, M Clarius, T Gotterbarm
AIMS: The aim of this independent multicentre study was to assess the mid-term results of mobile bearing unicondylar knee arthroplasty (UKA) for isolated lateral osteoarthritis of the knee joint. PATIENTS AND METHODS: We retrospectively evaluated 363 consecutive, lateral UKAs (346 patients) performed using the Oxford domed lateral prosthesis undertaken in three high-volume knee arthroplasty centres between 2006 and 2014. Mean age of the patients at surgery was 65 years (36 to 88) with a mean final follow-up of 37 months (12 to 93) RESULTS: A total of 36 (10...
January 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29305427/patient-specific-medial-unicompartmental-knee-arthroplasty-has-a-greater-protective-effect-on-articular-cartilage-in-the-lateral-compartment-a-finite-element-analysis
#3
K-T Kang, J Son, D-S Suh, S K Kwon, O-R Kwon, Y-G Koh
OBJECTIVES: Patient-specific (PS) implantation surgical technology has been introduced in recent years and a gradual increase in the associated number of surgical cases has been observed. PS technology uses a patient's own geometry in designing a medical device to provide minimal bone resection with improvement in the prosthetic bone coverage. However, whether PS unicompartmental knee arthroplasty (UKA) provides a better biomechanical effect than standard off-the-shelf prostheses for UKA has not yet been determined, and still remains controversial in both biomechanical and clinical fields...
January 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29298463/long-term-clinical-results-of-unicompartmental-knee-arthroplasty-in-patients-younger-than-60-years-of-age-minimum-10-year-follow-up
#4
Kyung Tae Kim, Song Lee, Jung Soo Lee, Min Su Kang, Ki Hyuk Koo
Purpose: To evaluate the long-term clinical results and survivorship of unicompartmental knee arthroplasty (UKA) in patients younger than 60 years of age. Materials and Methods: One hundred and six cases of medial UKA with a minimum follow-up of 10 years were selected for this study. There were 80 patients and the preoperative diagnosis was osteoarthritis in all cases. The mean age of the patients was 54.2 years and the mean duration of follow-up was 12.1 years...
January 4, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29298462/high-tibial-osteotomy-versus-unicompartmental-knee-arthroplasty-for-medial-compartment-arthrosis-with-kissing-lesions-in-relatively-young-patients
#5
Seung Min Ryu, Jae Woo Park, Ho Dong Na, Oog Jin Shon
Purpose: The purpose of this study is to compare the clinical and radiographic outcomes of high tibial osteotomy (HTO) and unicompartmental arthroplasty (UKA) in advanced medial compartment arthritis accompanied by kissing lesions in relatively young patients. Materials and Methods: Forty-five patients were divided into the HTO (n=23) and UKA (n=22) groups. Clinically, we evaluated the Lysholm knee scoring scale, visual analogue scale, Hospital for Special Surgery, and Western Ontario and McMaster Universities Osteoarthritis index scores preoperatively, 6 and 12 months postoperatively, and at the final follow-up...
January 4, 2018: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29282486/patient-specific-instrumentation-in-oxford-unicompartmental-knee-arthroplasty-is-reliable-and-accurate-except-for-the-tibial-rotation
#6
B Kerens, A M Leenders, M G M Schotanus, B Boonen, W E Tuinebreijer, P J Emans, B Jong, N P Kort
PURPOSE: Patient-specific instrumentation (PSI) is a technique to plan and position the prosthesis components in unicompartmental knee arthroplasty (UKA) surgery. This study assesses whether the definitive component position in the frontal, sagittal and axial plane is according to the preoperative plan, based on the hypothesis that PSI is accurate. METHODS: Twenty-six patients who had PSI Oxford UKA surgery were included prospectively. The component position in vivo was determined with a postoperative CT-scan and compared with the planned component position using MRI-based digital 3D imaging...
December 27, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29280006/minimally-invasive-unicompartmental-knee-arthroplasty
#7
REVIEW
Jean-Yves Jenny
The exact indication for a unicompartmental knee arthroplasty (UKA) remains debated. Minimally invasive techniques have been developed to decrease the surgical trauma related to the prosthesis implantation, and this technique is well fitted to UKA. However, there are concerns about loss of accuracy with minimally invasive techniques. Furthermore, rapid recovery techniques have been developed in order to reduce the length of hospital stay. Again, UKA is well fitted to these new developments of postoperative care...
December 26, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29279456/exploring-attractiveness-of-the-basic-sciences-for-female-physicians
#8
Yuka Yamazaki, Shinji Fukushima, Yuki Kozono, Takanori Uka, Eiji Marui
In Japan, traditional gender roles of women, especially the role of motherhood, may cause early career resignations in female physicians and a shortage of female researchers. Besides this gender issue, a general physician shortage is affecting basic science fields. Our previous study suggested that female physicians could be good candidates for the basic sciences because such work offers good work-life balance. However, the attractiveness for female physicians of working in the basic sciences, including work-life balance, is not known...
2018: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29246134/influence-of-the-anterior-notch-in-mobile-bearing-uka-on-patellofemoral-radiotracer-uptake-and-clinical-outcome
#9
Dietmar Dammerer, Michael Liebensteiner, Hannes Rochau, Christian Uprimny, Vinzenz Smekal, Ralf Rosenberger, Elvire Servien
BACKGROUND: Previous studies reported that in partial knee arthroplasty smooth transitions to the remaining native parts of the knee are important. However, in mobile-bearing unicondylar knee arthroplasty (UKA) it is mandatory to create an anterior osteochondral notch adjacent to the femoral component to get clearance for the anterior lip of the bearing in full knee extension. This notch is, however, part of the femoral trochlea. It was the aim of the study to test for a potential association between a) an obligatory anterior notch in mobile-bearing UKA located at the margin of the medial aspect of the femoral trochlea and b) postoperative patellofemoral joint (PFJ) bone remodelling and discomfort...
December 16, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29244223/fixed-bearing-medial-unicompartmental-knee-arthroplasty-restores-neither-the-medial-pivoting-behavior-nor-the-ligament-forces-of-the-intact-knee-in-passive-flexion
#10
Mohammad Kia, Lucian C Warth, Joseph D Lipman, Timothy M Wright, Geoffrey H Westrich, Michael B Cross, David J Mayman, Andrew D Pearle, Carl W Imhauser
Medial unicompartmental knee arthroplasty (UKA) is an accepted treatment for isolated medial osteoarthritis. However, using an improper thickness for the tibial component may contribute to early failure of the prosthesis or disease progression in the unreplaced lateral compartment. Little is known of the effect of insert thickness on both knee kinematics and ligament forces. Therefore, a computational model of the tibiofemoral joint was used to determine how non-conforming, fixed bearing medial UKA affects tibiofemoral kinematics and tension in the medial collateral ligament (MCL) and the anterior cruciate ligament (ACL) during passive knee flexion...
December 15, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29203354/unicompartmental-knee-arthroplasty-vs-high-tibial-osteotomy-for-knee-osteoarthritis-a-systematic-review-and-meta-analysis
#11
ZhenWu Cao, XiuJun Mai, Jun Wang, EnHui Feng, YongMing Huang
BACKGROUND: Prior studies have compared unicompartmental knee arthroplasty (UKA) with high tibial osteotomy (HTO) suggesting that both procedures had good clinical outcomes. However, which treatment is more beneficial for unicompartmental knee osteoarthritis is still a controversy. The purpose of our study is to obtain postoperative outcomes of revision rate, complications, function results, range of motion (ROM), and pain between the 2 procedures. METHODS: Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines were followed and study protocol was published online at PROSPERO under registration number CRD42016049316...
December 1, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29201296/predictors-of-midterm-outcomes-after-medial-unicompartmental-knee-arthroplasty-in-asians
#12
Hamid Rahmatullah Bin Abd Razak, Sanchalika Acharyya, Shi-Ming Tan, Hee-Nee Pang, Keng-Jin Darren Tay, Shi-Lu Chia, Ngai-Nung Lo, Seng-Jin Yeo
Background: This study was designed to evaluate predictors of good outcomes following medial unicompartmental knee arthroplasty (UKA) in Asian patients. Methods: Registry data of patients who underwent primary unilateral medial UKA from 2006 to 2011 were collected. Outcomes studied were the Oxford Knee Score (OKS) and the Physical Component Score (PCS) of the Short Form 36 (SF-36) questionnaire. These outcome scores were collected prospectively, pre- and postoperatively up to 5 years...
December 2017: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/29199061/should-medicare-remove-total-knee-arthroplasty-from-its-inpatient-only-list-a-total-knee-arthroplasty-is-not-a-partial-knee-arthroplasty
#13
P Maxwell Courtney, Mark I Froimson, R Michael Meneghini, Gwo-Chin Lee, Craig J Della Valle
BACKGROUND: The Centers for Medicare and Medicaid Services have solicited comments to consider removing total knee arthroplasty (TKA) from the Inpatient Only list, as it has done for unicompartmental knee arthroplasty (UKA). The purpose of this study is to determine whether Medicare-aged patients undergoing TKA had comparable outcomes to those undergoing UKA. METHODS: We queried the American College of Surgeons-National Surgical Quality Improvement Program database for all patients aged 65 years or older who underwent elective TKA or UKA from 2014 and 2015...
November 21, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29186431/monoamine-oxidase-a-gene-methylation-and-its-role-in-posttraumatic-stress-disorder-first-evidence-from-the-south-eastern-europe-see-ptsd-study
#14
Christiane Ziegler, Christiane Wolf, Miriam A Schiele, Elma Feric Bojic, Sabina Kucukalic, Emina Sabic Dzananovic, Aferdita Goci Uka, Blerina Hoxha, Valdete Haxhibeqiri, Shpend Haxhibeqiri, Nermina Kravic, Mirnesa Muminovic Umihanic, Ana Cima Franc, Nenad Jaksic, Romana Babic, Marko Pavlovic, Bodo Warrings, Alma Bravo Mehmedbasic, Dusko Rudan, Branka Aukst-Margetic, Abdulah Kucukalic, Damir Marjanovic, Dragan Babic, Nada Bozina, Miro Jakovljevic, Osman Sinanovic, Esmina Avdibegovic, Ferid Agani, Alma Dzubur-Kulenovic, Jürgen Deckert, Katharina Domschke
Background: Posttraumatic Stress Disorder (PTSD) is characterized by an overactive noradrenergic system conferring core PTSD symptoms such as hyperarousal and re-experiencing. Monoamine oxidase A (MAO-A) is one of the key enzymes mediating the turnover of noradrenaline. Here, DNA methylation of the MAOA gene exonI/intronI region was investigated for the first time in regards to its role in PTSD risk and severity. Methods: MAOA methylation was analyzed via direct sequencing of sodium bisulfite treated DNA extracted from blood cells in a total sample of N=652 (m=441) patients with current PTSD, patients with remitted PTSD and healthy probands (comparison group) recruited at five centres in Bosnia-Herzegovina, Croatia, and the Republic of Kosovo...
November 23, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29185005/larger-range-of-motion-and-increased-return-to-activity-but-higher-revision-rates-following-unicompartmental-versus-total-knee-arthroplasty-in-patients-under-65-a-systematic-review
#15
REVIEW
Laura J Kleeblad, Jelle P van der List, Hendrik A Zuiderbaan, Andrew D Pearle
PURPOSE: Due to the lack of comparative studies, a systematic review was conducted to determine revision rates of unicompartmental and total knee arthroplasty (UKA and TKA), and compare functional outcomes, range of motion and activity scores in patients less than 65 years of age. METHODS: A literature search was performed using PubMed, Embase, and Cochrane systems since 2000. 27 UKA and 33 TKA studies were identified and included. Annual revision rate (ARR), functional outcomes, and return to activity were assessed for both types of arthroplasty using independent t tests...
November 28, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29167979/good-results-with-minimally-invasive-unicompartmental-knee-resurfacing-after-10-year-follow-up
#16
Martin H Redish, Peter Fennema
The current study was designed to determine (1) 10-year implant survival and (2) patient's self-reported functional outcome in a single surgeon's consecutive cohort of patients who had undergone minimally invasive unicondylar resurfacing with a modified cementation technique utilizing a cobalt-chromium femur/inlaid all-PE tibia, fixed-bearing unicompartmental prosthesis. We included 344 consecutive patients (361 knees) who had received the study device between January 2002 and December 2005 in this retrospective study...
November 22, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29162608/robotic-arm-assisted-versus-conventional-unicompartmental-knee-arthroplasty-exploratory-secondary-analysis-of-a-randomised-controlled-trial
#17
M J G Blyth, I Anthony, P Rowe, M S Banger, A MacLean, B Jones
OBJECTIVES: This study reports on a secondary exploratory analysis of the early clinical outcomes of a randomised clinical trial comparing robotic arm-assisted unicompartmental knee arthroplasty (UKA) for medial compartment osteoarthritis of the knee with manual UKA performed using traditional surgical jigs. This follows reporting of the primary outcomes of implant accuracy and gait analysis that showed significant advantages in the robotic arm-assisted group. METHODS: A total of 139 patients were recruited from a single centre...
November 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/29153864/changes-in-markers-of-thrombin-generation-and-interleukin-6-during-unicondylar-knee-and-total-knee-arthroplasty
#18
Edwin P Su, Lauren E Mount, Allina A Nocon, Thomas P Sculco, George Go, Nigel E Sharrock
BACKGROUND: Total knee arthroplasty (TKA) is associated with a risk of thromboembolism requiring routine thromboprophylaxis, but there is debate about the risk with unicondylar knee arthroplasty (UKA) as it is a more minor procedure. We sought to investigate the relative risk of thromboembolism with UKA compared to TKA and one-staged bilateral TKA (BTKA) by measuring the increase in circulating biochemical markers of thrombin generation during the procedures. Degree of surgical trauma was also assessed by measuring interleukin-6, a marker of metabolic injury...
October 16, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29147743/low-implant-migration-of-the-sigma-%C3%A2-medial-unicompartmental-knee-arthroplasty
#19
Daan Koppens, Maiken Stilling, Stig Munk, Jesper Dalsgaard, Søren Rytter, Ole Gade Sørensen, Torben Bæk Hansen
PURPOSE: The purpose of this study was to evaluate implant migration of the fixed-bearing Sigma(®) medial unicompartmental knee arthroplasty (UKA). UKA is a regularly used treatment for patients with medial osteoarthritis (OA) of the knee. UKA has a higher revision rate than total knee arthroplasty. Implant migration can be used as a predictor of implant loosening. METHODS: A prospective radiostereometric cohort study was performed. Forty-five patients with medial OA of the knee were included and received a cemented Sigma(®) UKA...
November 16, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29146413/ct-fluoroscopy-guided-core-needle-biopsy-of-anterior-mediastinal-masses
#20
T Iguchi, T Hiraki, Y Matsui, H Fujiwara, J Sakurai, Y Masaoka, M Uka, T Tanaka, H Gobara, S Kanazawa
OBJECTIVE: To retrospectively evaluate the safety, diagnostic yield, and risk factors of diagnostic failure of computed tomography (CT) fluoroscopy-guided biopsies of anterior mediastinal masses. MATERIALS AND METHODS: Biopsy procedures and results of anterior mediastinal masses in 71 patients (32 women/39 men; mean [±standard deviation] age, 53.8±20.0years; range, 14-88years) were analyzed. Final diagnoses were based on surgical outcomes, imaging findings, or clinical follow-up findings...
November 13, 2017: Diagnostic and Interventional Imaging
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