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https://www.readbyqxmd.com/read/28324880/fine-needle-aspiration-cytology-of-diffuse-type-tenosynovial-giant-cell-tumors
#1
Zimin Zhao, Cherie Paquette, Akeesha A Shah, Kristen A Atkins, Henry F Frierson
BACKGROUND: Tenosynovial giant cell tumor (TSGCT), also known as giant cell tumor of tendon sheath or pigmented villonodular synovitis, is the most common benign tumor of the tendon and synovium. The intra-articular diffuse type can present as a large infiltrative mass involving adjacent soft tissue and sometimes causes secondary destruction of bone, which leads to radiographic and clinical concern for malignancy. The tumor may also be purely extra-articular. CASE: Here, we report the fine needle aspiration cytology findings of 2 cases of diffuse-type TSGCT with large mononuclear cells with eccentric nuclei, finely granular cytoplasm, and a peripheral well-defined cytoplasmic rim of hemosiderin ("ladybird cells")...
March 22, 2017: Acta Cytologica
https://www.readbyqxmd.com/read/28324822/outcome-evaluation-of-minimally-invasive-surgery-versus-extensile-lateral-approach-in-management-of-displaced-intra-articular-calcaneal-fractures-a-randomised-control-trial
#2
Ankit Khurana, Mandeep S Dhillon, Sharad Prabhakar, Rakesh John
BACKGROUND: Minimally invasive surgery has a significant and evolving role in the treatment of DIACFs, but there is limited literature on this topic. OBJECTIVES: To compare the clinico-radiological outcomes of DIACFs fixed with MIS technique with ORIF. METHODS: This randomised control trial (RCT) included 21 closed Sanders type 2 and 3 DIACFs which were selected from 70 who presented. Extensile lateral approach was used in the ORIF group; while MIS techniques included either percutaneous reduction or small incisions with indirect fragment manipulation...
February 20, 2017: Foot
https://www.readbyqxmd.com/read/28324121/-impingement-syndrome-of-the-ankle
#3
R-I Milos, L B Fritz, C Schueller-Weidekamm
Impingement syndrome of the ankle is a clinical diagnosis caused posttraumatically by overuse due to repetitive mechanical loading or the presence of predisposing anatomical variants. Ankle impingement syndrome is characterized by chronic pain and limited range of movement caused by mechanical compression of bony or soft tissues within the joint compartments. Ankle impingement syndrome is classified according to the various anatomical locations around the tibiotalar joint as anterior, anterolateral, anteromedial, posterior or posteromedial...
March 21, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28323696/a-new-angled-chisel-for-microendoscopic-decompressive-laminotomy
#4
Shu Nakamura, Motohide Shibayama, Fujio Ito, Yasushi Miura
STUDY DESIGN: A retrospective comparative series study. OBJECTIVE: The aim of the study was to describe a new angled chisel (NAC) that facilitates the osteotomy in microendoscopic decompressive laminotomy (MEDL), and to analyze the clinical and radiologic outcomes using the tool. SUMMARY OF BACKGROUND DATA: MEDL for lumbar spinal stenosis is a minimally invasive surgery. The paraspinous unilateral approach for bilateral decompression can preserve the posterior structure better than other methods...
April 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28323695/superior-recess-access-of-the-lumbar-facet-joint
#5
Sibel Demir-Deviren, Sukhminder Singh, Joshua Hanelin
STUDY DESIGN: Descriptive approach to accessing the lumbar facet joint by superior recess. OBJECTIVE: This study is aimed to describe an approach to accessing the lumbar facet joint through targeting the superior recess during lumbar facet joint injections. SUMMARY OF BACKGROUND DATA: Lumbar facet joint injections are routinely performed for both the diagnosis and treatment of chronic low back pain. Previous studies either did not specify which part of the joint to target, or recommended targeting the inferior aspect of the joint to access the inferior recess...
April 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28320092/inhibition-of-pi3k-akt-mtor-signaling-pathway-promotes-autophagy-of-articular-chondrocytes-and-attenuates-inflammatory-response-in-rats-with-osteoarthritis
#6
Jian-Feng Xue, Zhong-Min Shi, Jian Zou, Xiao-Lin Li
OBJECTIVE: This study aims to explore the relationship between PI3K/AKT/mTOR signaling pathway and autophagy of articular chondrocytes in rats with osteoarthritis (OA). METHODS: Rat articular chondrocytes were isolated and cultured, and then induced by protein inhibitors of PI3K/AKT/mTOR signaling pathway. Chondrocytes were assigned into blank group, IL-1β induction group (IL-1β group), PI3K inhibitor+IL-1β induction group (PI3Ki+IL-1β group), AKT inhibitor+IL-1β induction group (AKTi+IL-1β group) and mTOR inhibitor+IL-1β induction group (mTORi+IL-1β group)...
March 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28320075/a-cost-utility-analysis-of-high-molecular-weight-hyaluronic-acid-for-knee-osteoarthritis-in-everyday-clinical-care-in-patients-in-the-working-age-an-economic-evaluation-of-a-randomized-clinical-trial
#7
Job Hermans, Max Reijman, Lucas Ma Goossens, Hennie Verburg, Sita Ma Bierma-Zeinstra, Marc A Koopmanschap
Objectives Knee osteoarthritis (OA) is associated with high medical costs and especially with high productivity costs, in particular in patients in their working years. High molecular weight (HMW) hyaluronic acid (HA) is an alternative treatment for non-steroidal anti-inflammatory drugs (NSAIDs), which are known for their serious side-effects. The cost-utility of intra-articular HMW-HA treatment in these patients is unknown though and was assessed in this study. Methods Secondary care patients between 18 and 65 with knee OA were randomized to usual care (UC) + HMW-HA (intervention group) or UC only (control group)...
March 20, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/28320059/effects-of-treadmill-exercise-on-advanced-osteoarthritis-pain-in-rats
#8
Joshua Allen, Ian Imbert, Joshua Havelin, Terry Henderson, Glenn Stevenson, Lucy Liaw, Tamara King
OBJECTIVE: Exercise is commonly recommended for patients with osteoarthritis (OA) pain. However, whether exercise is beneficial in ameliorating persistent NSAID-resistant ongoing pain associated with advanced OA is unknown. METHODS: Rats treated with intra-articular monosodium iodoacetate (MIA) or saline underwent treadmill exercise or remained sedentary starting 10 days post-injection. Tactile sensory thresholds and weight bearing were assessed followed by radiographs at weekly intervals...
March 20, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28320058/regional-differences-between-perisynovial-and-infrapatellar-adipose-tissue-depots-and-their-response-to-class-ii-and-iii-obesity-in-patients-with-oa
#9
Natalia S Harasymowicz, Nick D Clement, Asim Azfer, Richard Burnett, Donald M Salter, A Hamish W R Simpson
OBJECTIVE: Obesity is associated with an increased risk of developing Osteoarthritis (OA), which is postulated to be secondary to inflammation from adipose tissue (AT). There are peri-articular adipose depots in synovial joints, the association of this tissue with OA has not been extensively explored. The aim of this study was to investigate differences in local AT depots in knees with OA and changes related to class II and III obesity. METHODS: Synovium and the infrapatellar fat pad (IPFP) were collected during total knee replacement from 69 patients with end-stage OA...
March 20, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28319157/subchondral-bone-histology-and-grading-in-osteoarthritis
#10
Olli-Matti Aho, Mikko Finnilä, Jerome Thevenot, Simo Saarakkala, Petri Lehenkari
OBJECTIVE: Osteoarthritis (OA) has often regarded as a disease of articular cartilage only. New evidence has shifted the paradigm towards a system biology approach, where also the surrounding tissue, especially bone is studied more vigorously. However, the histological features of subchondral bone are only poorly characterized in current histological grading scales of OA. The aim of this study is to specifically characterize histological changes occurring in subchondral bone at different stages of OA and propose a simple grading system for them...
2017: PloS One
https://www.readbyqxmd.com/read/28318324/subchondral-bone-response-to-injected-adipose-derived-stromal-cells-for-treating-osteoarthritis-using-an-experimental-rabbit-model
#11
A Parrilli, G Giavaresi, A Ferrari, F Salamanna, G Desando, B Grigolo, L Martini, M Fini
Although articular cartilage is the target of osteoarthritis (OA), its deterioration is not always clearly associated with patient symptoms. Because a functional interaction between cartilage and bone is crucial, the pathophysiology of OA and its treatment strategy must focus also on subchondral bone. We investigated whether adipose-derived stromal cells (ASCs) injected into a joint at two different concentrations could prevent subchondral bone damage after the onset of mild OA in a rabbit model. We measured both volumetric and densitometric aspects of bone remodeling...
March 20, 2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/28318066/three-dimensional-ultrashort-echo-time-cones-t1%C3%AF-3d-ute-cones-t1%C3%AF-imaging
#12
Ya-Jun Ma, Michael Carl, Hongda Shao, Anthony S Tadros, Eric Y Chang, Jiang Du
We report a novel three-dimensional (3D) ultrashort echo time (UTE) sequence employing Cones trajectory and T1ρ preparation (UTE-Cones-T1ρ ) for quantitative T1ρ assessment of short T2 tissues in the musculoskeletal system. A basic 3D UTE-Cones sequence was combined with a spin-locking preparation pulse for T1ρ contrast. A relatively short TR was used to decrease the scan time, which required T1 measurement and compensation using 3D UTE-Cones data acquisitions with variable TRs. Another strategy to reduce the total scan time was to acquire multiple Cones spokes (Nsp ) after each T1ρ preparation and fat saturation...
March 20, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28317557/the-role-of-allometry-and-posture-in-the-evolution-of-the-hominin-subaxial-cervical-spine
#13
Mikel Arlegi, Asier Gómez-Olivencia, Lou Albessard, Ignacio Martínez, Antoine Balzeau, Juan Luis Arsuaga, Ella Been
Cervical vertebrae not only protect the spinal cord but also are the insertion and origin points for muscles related to the movement of the head, upper limb, and trunk, among others, and are thus important elements in primate evolution. While previous work has been undertaken on the first two cervical vertebrae, there is a dearth of studies on the subaxial cervical spine in hominines. In this paper, we provide detailed morphological information on two important aspects of the subaxial cervical vertebrae (C3 - C7): mid-sagittal morphology and superior facet orientation...
March 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28317555/the-cervical-spine-of-australopithecus-sediba
#14
Marc R Meyer, Scott A Williams, Peter Schmid, Steven E Churchill, Lee R Berger
Cervical vertebrae are rare in the early hominin fossil record, presenting a challenge for understanding the evolution of the neck and head carriage in hominin evolution. Here, we examine the cervical vertebrae of Australopithecus sediba, which unlike other South African taxa is known from associated cervical vertebrae. The A. sediba cervical vertebrae exhibit human-like values for wedging, pedicle cross-sectional areas, and articular facet heights, indicating reduced ventral loading relative to African apes...
March 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28314754/kdm6b-regulates-cartilage-development-and-homeostasis-through-anabolic-metabolism
#15
Jun Dai, Dongsheng Yu, Yafei Wang, Yishan Chen, Heng Sun, Xiaolei Zhang, Shouan Zhu, Zongyou Pan, Boon Chin Heng, Shufang Zhang, Hongwei Ouyang
OBJECTIVES: Epigenetic mechanisms have been reported to play key roles in chondrogenesis and osteoarthritis (OA) development. Here, we sought to identify specific histone demethylases that are involved and delineate the underlying mechanisms. METHODS: We screened the expression of 17 distinct histone demethylases by quantitative real time PCR (qRT-PCR) during chondrogenic differentiation of C3H10T1/2 cells. The role of Kdm6b in cartilage development was then analysed with transgenic Col2a1-CreER(T2);Kdm6b(f/f) ...
March 17, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28314694/stress-ultrasound-in-baseball-players-with-ulnar-collateral-ligament-injuries-additional-value-for-predicting-rehabilitation-outcome
#16
Na Ra Kim, Sung Gyu Moon, Jin-Young Park, Jin Woo Choi, Kyung-Soo Oh
BACKGROUND: The purpose of this study was to evaluate the additional value of stress ultrasound (US) for predicting rehabilitation outcome in baseball players with ulnar collateral ligament (UCL) injury. METHODS: Stress US and magnetic resonance imaging (MRI) in 41 baseball players with UCL injury who received rehabilitation treatment for more than 6 weeks were retrospectively compared between the rehabilitation group (n = 23) and surgery group (n = 18)...
March 14, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28314555/the-effects-of-intra-articular-levobupivacain-versus-levobupivacain-plus-magnesium-sulfate-on-postoperative-analgesia-in-patients-undergoing-arthroscopic-meniscectomy-a-prospective-randomized-controlled-study
#17
Nurcan Kizilcik, Turhan Özler, Ferdi Menda, Çağatay Uluçay, Özge Köner, Faik Altintaş
OBJECTIVE: The aim of this study was to compared the effectiveness of intraarticular levobupivacain with levobupivacain and magnesium sulfate. METHODS: In this prospective randomized double blinded study, 96 patients (67 male, 29 female; age range: 18-65 years) with ASA (American Society of Anesthesiologist) score I and II, who had undergone arthroscopic meniscectomy operation, were divided to 3 groups that had postoperative analgesia with intra-articular saline injection (control group), levobupivacain injection (L group) or levobupivacain and magnesium sulfate injection (LM group)...
March 14, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28306711/is-glucosamine-effective-for-osteoarthritis
#18
Stephanie Harrison-Muñoz, Valentina Rojas-Briones, Sebastián Irarrázaval
Osteoarthritis is the most prevalent chronic articular disease, in which pain is one of the main symptoms and a major determinant of functional loss. Several therapeutic options have been proposed, including glucosamine, but its actual usefulness has not yet been established. To answer this question, we searched in Epistemonikos database, which is maintained by screening multiple databases. We identified 11 systematic reviews including 35 randomized trials answering the question of interest. We extracted data, conducted a meta-analysis and generated a summary of findings table using the GRADE approach...
March 15, 2017: Medwave
https://www.readbyqxmd.com/read/28303595/a-single-intra-articular-injection-of-fluvastatin-plga-microspheres-reduces-cartilage-degradation-in-rabbits-with-experimental-osteoarthritis
#19
Norio Goto, Ken Okazaki, Yukio Akasaki, Kohei Ishihara, Koji Murakami, Kiyoshi Koyano, Yasunori Ayukawa, Noriyuki Yasunami, Tomohiro Masuzaki, Yasuharu Nakashima
Statins are cholesterol-lowering drugs that inhibit 3-hydroxy-3- methylglutaryl-coenzyme A (HMG-CoA) reductase, a rate-limiting enzyme of the mevalonate pathway. The anti-inflammatory effect of statins has been reported in recent years. The present study investigated therapeutic effects of the local administration of statin in osteoarthritis (OA). We assessed clinically used statins and selected fluvastatin for further experimentation, as it showed potent anabolic and anti-catabolic effects on human OA chondrocytes...
March 17, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28302426/proximity-of-lateral-critical-structures-to-the-all-epiphyseal-outside-in-femoral-tunnels-in-pediatric-anterior-cruciate-ligament-reconstruction
#20
Mark K Lane, Jennifer Mutch, Kaitlyn Ratkowiak, Stephen E Lemos, Kunal Kalra
PURPOSE: To describe the proximity of the lateral critical structures (peroneal nerve [PN], popliteus tendon [PT], lateral collateral ligament [LCL], and articular cartilage [AC]) to the femoral tunnel for outside-in all-epiphyseal anterior cruciate ligament (ACL) reconstruction in reference to knee flexion angle. METHODS: All-epiphyseal ACL reconstructions were performed in 12 human cadaveric knees using arthroscopy and outside-in drilling for anatomic femoral tunnel placement that was ensured by identifying the center of the total ACL footprint...
March 13, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
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