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Partial knee arthroplasty

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https://www.readbyqxmd.com/read/28529858/hydrogen-peroxide-wound-irrigation-in-orthopaedic-surgery
#1
REVIEW
Min Lu, Erik Nathan Hansen
As the burden of deep hardware infections continues to rise in orthopaedics, there is increasing interest in strategies for more effective debridement of colonized tissues and biofilm. Hydrogen peroxide has been used medically for almost a century, but its applications in orthopaedic surgery have yet to be fully determined. The basic science and clinical research on the antiseptic efficacy of hydrogen peroxide have demonstrated its efficacy against bacteria, and it has demonstrated potential synergy with other irrigation solutions such as chlorhexidine and povidone-iodine...
2017: J Bone Jt Infect
https://www.readbyqxmd.com/read/28514128/-treatment-for-osteoarthritis-of-the-knee
#2
REVIEW
Uriel Giwnewer, Guy Rubin, Hagay Orbach, Nimrod Rozen
Osteoarthritis is the most common joint disorder in the world and its incidence is rising. In Western populations it is one of the most frequent causes of pain, loss of function and disability in adults. The estimated lifetime risk for knee osteoarthritis is approximately 40% in men and 47% in women. The diagnosis of osteoarthritis is complex due to a lack of specific physical and/or laboratorial findings. The American College of Rheumatology (ACR) has recommended using the following criteria for the diagnosis of knee osteoarthritis: chronic knee pain (lasting for more than 6 weeks) and at least three of the following: • Age over 50 years old...
July 2016: Harefuah
https://www.readbyqxmd.com/read/28507975/charcot-fracture-in-the-calcaneus-after-total-knee-arthroplasty-a-case-report
#3
Hirokazu Takai, Katsuhiko Kiyota, Nobutake Nakane, Tomoki Takahashi
INTRODUCTION: Only a few reports have described calcaneus fractures after total knee arthroplasty (TKA). Therefore, in this report, we describe a case of calcaneal avulsion fracture that occurred 5 weeks after a TKA in a relatively young male patient with syphilis. CASE REPORT: A 63-year-old man with syphilis had Charcot joint of the right knee. The patient developed severe varus deformity and contracture and experienced severe pain in the knee. TKA was performed to alleviate the pain and improve the patient's gait...
November 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28503126/in-vitro-and-ex-vivo-measurement-of-prophylactic-dabigatran-concentrations-with-a-new-ecarin-based-thromboelastometry-test
#4
Mareike Kristina Körber, Elisabeth Langer, Martin Köhr, Klaus-Dieter Wernecke, Wolfgang Korte, Christian von Heymann
BACKGROUND: An increasing number of oral anticoagulants has been approved, including dabigatran etexilate (DE). DE is a direct thrombin inhibitor that requires no routine monitoring, but, if necessary (e.g. urgent surgery etc.), the diluted thrombin time measured with Hemoclot® has shown reliable results. So far, no point-of-care (PoC) assay is available to measure DE effects. The EcaTEM assay uses ecarin to initiate the coagulation cascade at the step of thrombin generation and measures the clotting time (CT) by thromboelastometry...
April 2017: Transfusion Medicine and Hemotherapy
https://www.readbyqxmd.com/read/28473962/associations-among-pain-catastrophizing-muscle-strength-and-physical-performance-after-total-knee-and-hip-arthroplasty
#5
Kazuhiro Hayashi, Masato Kako, Kentaro Suzuki, Keiko Hattori, Saori Fukuyasu, Koji Sato, Izumi Kadono, Tadahiro Sakai, Yukiharu Hasegawa, Yoshihiro Nishida
AIM: To investigate whether reductions in pain catastrophizing associated with physical performance in the early period after total knee arthroplasty (TKA) or total hip arthroplasty (THA). METHODS: The study group of 46 participants underwent TKA or THA. The participants were evaluated within 7 d before the operation and at 14 d afterwards. Physical performance was measured by the Timed Up and Go (TUG) test, and 10-m gait time was measured at comfortable and maximum speeds...
April 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28385936/unsatisfactory-outcomes-following-unicompartmental-knee-arthroplasty-in-patients-with-partial-thickness-cartilage-loss-a-medium-term-follow-up
#6
T W Hamilton, H G Pandit, A Inabathula, S J Ostlere, C Jenkins, S J Mellon, C A F Dodd, D W Murray
AIMS: While medial unicompartmental knee arthroplasty (UKA) is indicated for patients with full-thickness cartilage loss, it is occasionally used to treat those with partial-thickness loss. The aim of this study was to investigate the five-year outcomes in a consecutive series of UKAs used in patients with partial thickness cartilage loss in the medial compartment of the knee. PATIENTS AND METHODS: Between 2002 and 2014, 94 consecutive UKAs were undertaken in 90 patients with partial thickness cartilage loss and followed up independently for a mean of six years (1 to 13)...
April 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28378003/ultrasound-gel-minimizes-third-body-debris-with-partial-hardware-removal-in-joint-arthroplasty
#7
Aidan C McGrory, Lee Replogle, Donald Endrizzi
Hundreds of thousands of revision surgeries for hip, knee, and shoulder joint arthroplasties are now performed worldwide annually. Partial removal of hardware during some types of revision surgeries may create significant amounts of third body metal, polymer, or bone cement debris. Retained debris may lead to a variety of negative health effects including damage to the joint replacement. We describe a novel technique for the better containment and easier removal of third body debris during partial hardware removal...
March 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/28372918/all-polyethylene-tibial-component-use-for-elderly-low-demand-total-knee-arthroplasty-patients
#8
Kenneth A Gustke, Martin K Gelbke
BACKGROUND: Potential advantages combined with lower cost have prompted a renewed interest in modern all-polyethylene tibial designs. METHODS: A total of 317 Natural Knee total knee arthroplasties with an all-polyethylene tibial component that was performed since 1993 were retrospectively reviewed to confirm that cost savings were not associated with inferior clinical results. They were primarily used in elderly, low-demand patients. The average age at the time of surgery was 80...
March 8, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28371786/assessment-of-gait-characteristics-in-total-knee-arthroplasty-patients-using-a-hierarchical-partial-least-squares-method
#9
Wei Wang, David Ackland, Jodie McClelland, Kate E Webster, Saman Halgamuge
Quantitative gait analysis is an important tool in objective assessment and management of total knee arthroplasty (TKA) patients. Studies evaluating gait patterns in TKA patients have tended to focus on discrete data such as spatiotemporal information, knee range of motion and peaks in kinematics and kinetics, or consider selected principal components of gait waveforms for analysis. These strategies may not have the capacity to capture small variations in gait patterns associated with each joint across an entire gait cycle, and may ultimately limit the accuracy of gait classification...
March 30, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28347691/workers-perspectives-on-return-to-work-after-total-knee-arthroplasty
#10
Pascale Maillette, Marie-France Coutu, Nathaly Gaudreault
OBJECTIVES: Total knee arthroplasty is an effective intervention for people with osteoarthritis. However, 15 to 30% of patients do not return to work, and studies frequently fail to provide an explanation of what may lead to work disability from workers' perspectives of the biopsychosocial factors. This study aimed to document workers' representations or understanding of work disability after total knee arthroplasty. METHOD: We adopted a qualitative approach with a narrative inquiry method...
March 24, 2017: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28293735/-knee-joint-pain-with-signs-of-arthrosis
#11
T T A Bender, M Marinova, L Radbruch, R Conrad, D Jobst, M Mücke
Chronic pain in the knee joint is most commonly caused by osteoarthritis, especially in elderly patients but can be due to other causes, such as rheumatoid arthritis. The diagnostics include an exact patient medical history and a clinical examination, which often already provide clear indications of the cause of the knee pain. Subsequently, further diagnostics can then be considered, such as radiological procedures and laboratory diagnostics. The treatment is determined by the cause and the individual patient and aims to reduce pain and to preserve the mobility of the joint...
March 14, 2017: Der Schmerz
https://www.readbyqxmd.com/read/28249970/local-bisphosphonate-reduces-migration-and-formation-of-radiolucent-lines-adjacent-to-cemented-acetabular-components
#12
RANDOMIZED CONTROLLED TRIAL
J Schilcher, L Palm, I Ivarsson, P Aspenberg
AIMS: Post-operative migration of cemented acetabular components as measured by radiostereometric analysis (RSA) has a strong predictive power for late, aseptic loosening. Also, radiolucent lines predict late loosening. Migration has been reduced by systemic bisphosphonate treatment in randomised trials of hip and knee arthroplasty. Used as a local treatment, a higher local dose of bisphosphonate can be achieved without systemic exposure. We wished to see if this principle could be applied usefully in total hip arthroplasty (THA)...
March 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28184957/partial-meniscectomy-provides-no-benefit-for-symptomatic-degenerative-medial-meniscus-posterior-root-tears
#13
Aaron J Krych, Nick R Johnson, Rohith Mohan, Diane L Dahm, Bruce A Levy, Michael J Stuart
PURPOSE: Medial meniscus posterior root tears (MMPRTs) are recognized as a source of pain and dysfunction, but treatment options remain a challenge. The purpose of the study was to determine (1) the efficacy of partial meniscectomy to treat MMPRTs compared to a matched group of non-operatively treated MMPRTs, and (2) risk factors for worse clinical and radiographic outcome. METHODS: This retrospective comparative study was performed to include patients with complete, isolated MMPRTs with documented clinical symptoms and were treated with arthroscopic partial meniscectomy (PMM) and a minimum 2-year follow-up...
February 9, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28178436/femoral-versus-multiple-nerve-blocks-for-analgesia-after-total-knee-arthroplasty
#14
Anatoli Stav, Leonid Reytman, Roger Sevi, Michael Yohay Stav, Devorah Powell, Yanai Dor, Mickey Dudkiewicz, Fuaz Bayadse, Ahud Sternberg, Michael Soudry
BACKGROUND: The PROSPECT (Procedure-Specific Postoperative Pain Management) Group recommended a single injection femoral nerve block in 2008 as a guideline for analgesia after total knee arthroplasty. Other authors have recommended the addition of sciatic and obturator nerve blocks. The lateral femoral cutaneous nerve is also involved in pain syndrome following total knee arthroplasty. We hypothesized that preoperative blocking of all four nerves would offer superior analgesia to femoral nerve block alone...
January 30, 2017: Rambam Maimonides Medical Journal
https://www.readbyqxmd.com/read/28161138/prognosis-of-advanced-tenosynovial-giant-cell-tumor-of-the-knee-diagnosed-during-total-knee-arthroplasty
#15
Pengfei Lei, Rongxin Sun, Hao Liu, Jianxi Zhu, Ting Wen, Yihe Hu
BACKGROUND: Tenosynovial giant cell tumor (TGCT) is a relatively rare disease often misdiagnosed as osteoarthritis. Synovectomy or arthroplasty is the recommended treatment option, but recurrence is common after surgery. This study aimed to determine the prognosis of patients with advanced TGCT that was diagnosed incidentally during total knee arthroplasty (TKA) for osteoarthritis and treated by synovectomy. METHODS: From January 2008 to July 2011, TGCT was diagnosed incidentally in 10 patients (a total of 11 individual knees) undergoing posterior-stabilized TKA for an initial diagnosis of osteoarthritis...
January 11, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28138717/-patellofemoral-arthroplasty
#16
M Cotic, P Forkel, A B Imhoff
OBJECTIVE: Isolated resurfacing of the trochlea using an inlay prosthesis without changing the complex kinematics of the patellofemoral joint. INDICATIONS: Symptomatic, isolated patellofemoral osteoarthritis or isolated osteochondral lesions, failed conservative and cartilage regeneration procedures. No or concurrently corrected ligament instability, tibiofemoral and patellofemoral malalignment. CONTRAINDICATIONS: Symptomatic patellofemoral osteoarthritis, inflammatory joint disease, chondrocalcinosis, chronic pain syndromes, active infections or knee ankylosis...
February 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28107366/comparative-analysis-of-direct-hospital-care-costs-between-aseptic-and-two-stage-septic-knee-revision
#17
Richard Kasch, Sebastian Merk, Grit Assmann, Andreas Lahm, Matthias Napp, Harry Merk, Steffen Flessa
BACKGROUND: The most common intermediate and long-term complications of total knee arthroplasty (TKA) include aseptic and septic failure of prosthetic joints. These complications cause suffering, and their management is expensive. In the future the number of revision TKA will increase, which involves a greater financial burden. Little concrete data about direct costs for aseptic and two-stage septic knee revisions with an in depth-analysis of septic explantation and implantation is available...
2017: PloS One
https://www.readbyqxmd.com/read/28018074/simultaneous-posterior-dislocation-of-primary-total-knee-arthroplasty-with-ipsilateral-tibial-shaft-fracture-a-case-report-and-review-of-literature
#18
Alpaslan Öztürk, Yavuz Akalin, Nazan Çevik, Mustafa Çınar Akça
Dislocation following total knee arthroplasty (TKA) is a rare but serious complication. Here, a 74-year-old woman with posterior dislocation of her right cruciate-retaining TKA and ipsilateral tibia diaphysis fracture was presented. She only slipped down on the ground with a quick twist of her right leg. She underwent revision semiconstrained TKA and osteosynthesis of tibial fracture with plate and screw. Her partially avulsed patellar tendon was repaired as well. She was ambulatory with a cane and satisfied with revision operation at last control...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/27998659/radiographic-imaging-in-the-postanesthesia-care-unit-is-unnecessary-after-partial-knee-arthroplasty
#19
Andrew S Longenecker, Gregory S Kazarian, Giovanni P Boyer, Jess H Lonner
BACKGROUND: Obtaining routine radiographs in the postanesthesia care unit (PACU) after primary uncomplicated partial knee arthroplasty (PKA) is a common practice with unclear utility. The objective of this study is to determine the rate at which immediate postoperative radiographs identify an actionable problem after primary uncomplicated PKA and to determine the potential cost savings associated with foregoing the routine acquisition of these radiographs. METHODS: This was a retrospective review that assessed a consecutive series of 1366 primary uncomplicated PKAs (including 873 unicondylar knee arthroplasties, 313 patellofemoral arthroplasties, and 180 bicompartmental knee arthroplasties) performed between January 2008 and March 2016...
November 27, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27981068/structure-enhanced-local-phase-filtering-using-l0-gradient-minimization-for-efficient-semiautomated-knee-magnetic-resonance-imaging-segmentation
#20
Mikhiel Lim, Ilker Hacihaliloglu
The segmentation of bone surfaces from magnetic resonance imaging (MRI) data has applications in the quantitative measurement of knee osteoarthritis, surgery planning for patient-specific total knee arthroplasty, and its subsequent fabrication of artificial implants. However, due to the problems associated with MRI imaging, such as low contrast between bone and surrounding tissues, noise, bias fields, and the partial volume effect, segmentation of bone surfaces continues to be a challenging operation. A framework is presented for the enhancement of knee MRI scans prior to segmentation in order to obtain high contrast bone images...
October 2016: Journal of Medical Imaging
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