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Knee Osteoarthritis

Michelle L Delco, John G Kennedy, Lawrence J Bonassar, Lisa A Fortier
The diagnosis of ankle osteoarthritis (OA) is increasing as a result of advancements in non-invasive imaging modalities such as magnetic resonance imaging, improved arthroscopic surgical technology and heightened awareness among clinicians. Unlike OA of the knee, primary or age-related ankle OA is rare, with the majority of ankle OA classified as post-traumatic (PTOA). Ankle trauma, more specifically ankle sprain, is the single most common athletic injury, and no effective therapies are available to prevent or slow progression of PTOA...
October 20, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
Ho Sun Kim, Joon-Shik Shin, Jinho Lee, Yoon Jae Lee, Me-Riong Kim, Young-Hyeon Bae, Ki Byung Park, Eun-Jung Lee, Joo-Hee Kim, In-Hyuk Ha
BACKGROUND: Osteoarthritis is a significant burden on personal health and for social cost, and its prevalence is rising. Recent research has revealed an association between osteoarthritis and cardiovascular disease, and this study uses the Framingham risk score (FRS), which is widely used as a composite index of cardiovascular risk factors, to investigate the association between osteoarthritis and various cardiovascular risk factors. METHODS: A total 9,514 participants aged 50 years or older who received knee X-ray diagnosis of the 5th Korean National Health and Nutrition Examination Survey (total surveyees = 24,173) released by the Korean Centers for Disease Control and Prevention was included for analysis...
2016: PloS One
H MacPherson, E A Vertosick, N E Foster, G Lewith, K Linde, K J Sherman, C M Witt, A J Vickers
There is uncertainty regarding how long the effects of acupuncture treatment persist after a course of treatment. We aimed to determine the trajectory of pain scores over time following acupuncture, using a large individual patient dataset from high quality randomized trials of acupuncture for chronic pain. The available individual patient dataset included 29 trials and 17,922 patients. The chronic pain conditions included musculoskeletal pain (low back, neck and shoulder), osteoarthritis of the knee and headache/migraine...
October 17, 2016: Pain
Shobhit Srivastava, Anil K Saksena, Sanjay Khattri, Santosh Kumar, Raghubendra Singh Dagur
BACKGROUND AND PURPOSE: Curcuma longa L. (CL), an Indian herb, has been used to treat many disorders because of its wide spectrum of pharmacological activities. It has been shown to exhibit anti-oxidant and anti-inflammatory properties, and is being used as herbal remedy since ancient times. Osteoarthritis of knee (KOA) is a chronic painful disorder in which prolong use of non-steroidal anti-inflammatory drugs (NSAIDs) or steroids may result into many serious side effects; hence, there is a need to develop herbal drugs, having good analgesia without side effects...
October 19, 2016: Inflammopharmacology
Gerrit Bode, Ferdinand Kloos, Matthias J Feucht, Benjamin Fleischer, Norbert Südkamp, Philipp Niemeyer, Christoph Becher
PURPOSE: The unloading effect of an extra-articular absorber system on the knee joint medial compartment was compared with high tibial osteotomy (HTO) under physiological conditions in vitro. METHODS: Seven fresh-frozen cadaveric knees were used to test isokinetic flexion-extension motions under physiological loading using a biomechanical knee simulator. Tibiofemoral area contact and peak contact pressures were measured using pressure-sensitive film in the untreated medial compartment...
October 19, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Philippe P Van Overschelde, David A Fitch
BACKGROUND: Patient dissatisfaction following total knee replacement (TKR) has been reported as high as 24%. Most previous studies have focused on satisfaction for TKR overall, with few reporting satisfaction for specific implant designs. The purpose of this study was to assess patient satisfaction for TKRs performed using a second generation medial-pivot system (EVOLUTION(®), MicroPort Orthopedics Inc., Arlington, TN, USA). METHODS: Of a single surgeon's first 250 consecutive TKRs performed using the subject system, 224 completed a patient satisfaction assessment, the Knee Injury and Osteoarthritis Outcome Score (KOOS), range of motion, and radiographs at 2 months follow-up...
September 2016: Annals of Translational Medicine
Babak Nakhostin-Roohi, Faegheh Khoshkhahesh, Shahab Bohlooli
OBJECTIVE: The main purpose of this study was to evaluate the effects of virgin olive oil phonophoresis on female athletes' anterior knee pain (AKP). MATERIALS AND METHODS: A double blinded randomized clinical trial was conducted. Ninety-three female athletes suffering from AKP voluntarily participated in this study. Patients were randomly assigned into olive oil (n=31), piroxicam (n=31) or base gel phonophoresis (n=31) groups. At the baseline visit, the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) questionnaire was filled by subjects who were then treated with olive oil, piroxicam or pure phonophoresis for 12 sessions...
September 2016: Avicenna Journal of Phytomedicine
Christian Scheele, Matthias F Pietschmann, Christian Schröder, Thomas Grupp, Melanie Holderied, Volmar Jansson, Peter E Müller
BACKGROUND: Unicompartmental total knee arthroplasty (UKA) is a well-established treatment option for unicondylar osteoarthritis, and generally leads to better functional results than tricompartimental total knee arthroplasty (TKA). However, revision rates of UKAs are reported as being higher; a major reason for this is aseptic loosening of the tibial component due to implant-cement-bone interface fatigue. The objective of this study was to determine the effects of trabecular bone preparation, prior to implantation of tibial UKAs, on morphological and biomechanical outcomes in a cadaver study...
October 16, 2016: Knee
Zhenyang Mao, Bing Yue, You Wang, Mengning Yan, Kerong Dai
BACKGROUND: Intra-articular injection of tranexamic acid (TXA) is known to be effective in controlling blood loss after total knee arthroplasty (TKA). However, this method has some disadvantages, such as TXA leakage due to soft tissue release. Peri-articular injection provides an alternative to intra-articular administration of TXA. This study aimed to evaluate the effects of peri-articular injection of TXA in reducing blood loss after TKA and compare them to those of intra-articular TXA injection...
October 19, 2016: BMC Musculoskeletal Disorders
Behzad Heidari, Karimollah Hajian-Tilaki, Mansour Babaei
BACKGROUND: Several factors are associated with the development or exacerbation of pain in knee osteoarthritis (KOA). In this study, we reviewed this context based on relevant studies. METHODS: Recent published studies which have addressed the relationship between pain and KOA were summarized. RESULTS: Correlates of the clinical, demographic features, laboratory tests and abnormalities on radiographic as well as magnetic resonance imaging (MRI) with the knee pain have been discussed...
2016: Caspian Journal of Internal Medicine
Zhenlong Liu, Xiaoqing Hu, Zhentao Man, Jiying Zhang, Yanfang Jiang, Yingfang Ao
Though many surgical animal models have been used to induce osteoarthritis (OA) of the knee joint, they always open the capsule of the joint. Any surgical procedures that incises the capsule may cause inflammation, pain, and possibly altered gait. One common disadvantage of these surgically induced animal models is that they may affect the initial structures and synovial fluid in joint. These animal models may not be suitable for research into synovial fluid changes during early OA. This study aimed to create an animal model of early OA by resecting the medial collateral ligament (MCL) outside of the capsule...
October 19, 2016: Scientific Reports
Kenji Murata, Naohiko Kanemura, Takanori Kokubun, Tsutomu Fujino, Yuri Morishita, Katsuya Onitsuka, Shuhei Fujiwara, Aya Nakashima, Daisuke Shimizu, Kiyomi Takayanagi
OBJECTIVE: Joint instability induced by anterior cruciate ligament (ACL) transection is commonly considered as a predisposing factor for osteoarthritis of the knee; however, the influence of re-stabilization on the protection of articular cartilage is unclear. The aim of this study was to evaluate the effect of joint re-stabilization on articular cartilage using an instability and re-stabilization ACL transection model. DESIGN: To induce different models of joint instability, our laboratory created a controlled abnormal joint movement (CAJM) group and an anterior cruciate ligament transection group (ACL-T)...
October 15, 2016: Osteoarthritis and Cartilage
W Wang, L Liu, X Chang, Z Y Jia, J Z Zhao, W D Xu
BACKGROUND: The Lysholm Knee Score (LKS) is widely used and is one of the most effective questionnaires employed to assess knee injuries. Although LKS has been translated into multiple languages, there is no Chinese version even though China has the largest population of patients with knee-joint injuries. The objective of our study was to develop the Chinese version of LKS (C-LKS) and assess its reliability, validity and responsiveness in Chinese patients with anterior cruciate ligament (ACL) injuries...
October 19, 2016: BMC Musculoskeletal Disorders
Carla R Scanzello
PURPOSE OF REVIEW: Inflammatory changes in joint tissues can be detected by modern imaging techniques in osteoarthritis patients, but may be clinically subtle compared with many other types of arthritis. These changes associate with disease progression and clinical severity, and many inflammatory mediators may have biomarker utility. Moreover, a number of inflammatory mechanisms play a role in animal models of disease, but it is still not clear which mechanisms predominate and might be therapeutically manipulated most effectively...
October 14, 2016: Current Opinion in Rheumatology
Win M Oo, James M Linklater, David J Hunter
PURPOSE OF REVIEW: Osteoarthritis is the most prevalent and disabling disease still necessitating research in pathogenic mechanisms, predictors of disease progression and responsive techniques to detect the slow structural changes within a short time frame. In this scenario, imaging modalities are essential. With recent advancements in technology and availability of large longitudinal datasets, tremendous advances are occurring. The present review discusses and summarizes recent original publications in this area...
October 17, 2016: Current Opinion in Rheumatology
Sophie C Warner, Ana M Valdes
PURPOSE OF REVIEW: Osteoarthritis is a common complex disorder with a strong genetic component. Other identified risk factors such as increasing age and overweight do not fully explain the risk of osteoarthritis. Here, we highlight the main findings from genetic association studies on osteoarthritis to date. RECENT FINDINGS: Currently, genetic association studies have identified 21 independent susceptibility loci for osteoarthritis. Studies have focused on hip, knee and hand osteoarthritis, as well as posttotal joint replacement and minimum joint space width, a proxy for cartilage thickness...
October 17, 2016: Current Opinion in Rheumatology
Yoshihiro Fukumoto, Hiroshige Tateuchi, Rui Tsukagoshi, Yusuke Okita, Haruhiko Akiyama, Kazutaka So, Yutaka Kuroda, Noriaki Ichihashi
OBJECTIVE: The aim of this study was to investigate the effects of high-velocity (HV) and low-velocity (LV) resistance training on gait kinematics and kinetics in patients with hip osteoarthritis. DESIGN: This was a single-blind, randomized controlled trial. Forty-six women with hip osteoarthritis were randomly allocated to the HV (n = 23) or LV (n = 23) training group. The participants underwent an 8-week home-based the HV or LV resistance-training program, involving the hip and knee muscles...
October 13, 2016: American Journal of Physical Medicine & Rehabilitation
Fei Yu, Hui Zeng, Ming Lei, De-Ming Xiao, Wei Li, Hao Yuan, Jian-Jing Lin
This study investigated the effects of SIRT1 gene knock-out on osteoarthritis in mice, and the possible roles of SREBP2 protein and the PI3K/AKT signaling pathway in the effects. Mice were randomly divided into a normal group and a SIRT1 gene knock-out group (6 mice in each group). In these groups, one side of the knee anterior cruciate ligament was traversed, and the ipsilateral medial meniscus was cut to establish an osteoarthritis model of knee joint. The countralateral synovial bursa was cut out, serving as controls...
October 2016: Journal of Huazhong University of Science and Technology. Medical Sciences
Atsushi Minatani, Kentaro Uchida, Gen Inoue, Shotaro Takano, Jun Aikawa, Masayuki Miyagi, Hisako Fujimaki, Dai Iwase, Kenji Onuma, Toshihide Matsumoto, Masashi Takaso
BACKGROUND: Calcitonin gene-related peptide (CGRP) is a 37-amino-acid vasodilatory neuropeptide that binds to receptor activity-modifying protein 1 (RAMP1) and the calcitonin receptor-like receptor (CLR). Clinical and preclinical evidence suggests that CGRP is associated with hip and knee joint pain; however, the regulation mechanisms of CGRP/CGRP receptor signaling in synovial tissue are not fully understood. METHODS: Synovial tissues were harvested from 43 participants with radiographic knee osteoarthritis (OA; unilateral Kellgren/Lawrence (K/L) grades 3-4) during total knee arthroplasty...
October 17, 2016: Journal of Orthopaedic Surgery and Research
Morad Chughtai, Anil Bhave, Sabahat Z Khan, Anton Khlopas, Osman Ali, Steven F Harwin, Michael A Mont
The use of a pneumatic unloader brace has been shown in pilot studies to decrease pain and increase muscle strength in patients with knee osteoarthritis (OA). Therefore, we analyzed patients who had knee OA, and either received a pneumatic unloader brace and conventional treatment or conventional treatment alone. Specifically, we assessed: (1) use of pain relieving injections; (2) opioid consumption; and (3) the eventual need for total knee arthroplasty (TKA) in the above-mentioned cohort. We performed an analysis of a longitudinally maintained database of patients from a prospective, randomized, single center study...
October 17, 2016: Journal of Knee Surgery
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