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https://www.readbyqxmd.com/read/28918786/-treatment-of-meniscal-pathology
#1
Martin Wyman Rathcke, Martin Lind, Morten Ilum Boesen, Nis Nissen, Anders Ploug Boesen, Bjarne Mygind-Klavsen, Per Hölmich
The menisci play a major role in knee function regarding joint movement, stability, load distribution and load transmission. Injuries to the menisci cause pain, and meniscal tears are a common reason for patient referral. In Denmark, partial meniscectomy increased significantly until 2010, and several studies have questioned the long-term effect of meniscectomy as an overall procedure. A Danish national clinical guideline on knee meniscal pathology was published in May 2016, and this article is a short summary of updated knowledge on meniscal pathology and relevant conclusions from the guideline...
September 18, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28915521/comparative-analysis-of-gene-expression-between-cartilage-and-menisci-in-early-phase-osteoarthritis-of-the-knee-an-animal-model-study
#2
Jun Endo, Takahisa Sasho, Ryuichiro Akagi, Yuta Muramatsu, Atsuya Watanabe, Yorikazu Akatsu, Taisuke Fukawa, Masamichi Tahara, Satoshi Yamaguchi
No abstract text is available yet for this article.
September 15, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28910532/roles-of-wettability-and-supercooling-in-cyclopentane-hydrate-spreading-over-a-substrate
#3
Abdelhafid Touil, Daniel Broseta, Nelly Hobeika, Ross Brown
We use transmission optical microscopy to observe cyclopentane hydrate growth in sub-mm, open glass capillaries, mimicking cylindrical pores. The capillary is initially loaded with water and the guest fluid (cyclopentane) and thus possesses three menisci, that between water and cyclopentane (CP) in the middle, and two menisci with the vapors at the ends. At temperatures T below the equilibrium temperature Teq ∼ 7°C, the hydrate nucleates on the water-CP meniscus, rapidly coating it with an immobile, polycrystalline crust...
September 14, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28895760/application-of-a-semi-automatic-cartilage-segmentation-method-for-biomechanical-modeling-of-the-knee-joint
#4
Mimmi K Liukkonen, Mika E Mononen, Petri Tanska, Simo Saarakkala, Miika T Nieminen, Rami K Korhonen
Manual segmentation of articular cartilage from knee joint 3D magnetic resonance images (MRI) is a time consuming and laborious task. Thus, automatic methods are needed for faster and reproducible segmentations. In the present study, we developed a semi-automatic segmentation method based on radial intensity profiles to generate 3D geometries of knee joint cartilage which were then used in computational biomechanical models of the knee joint. Six healthy volunteers were imaged with a 3T MRI device and their knee cartilages were segmented both manually and semi-automatically...
September 12, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28885697/second-look-arthroscopic-findings-after-cora-based-leveling-osteotomy
#5
Barbara Vasquez, Don Hulse, Brian Beale, Sharon Kerwin, Chad Andrews, Brian W Saunders
OBJECTIVE: To describe the arthroscopic appearance of intra-articular structures mid-term (9 months) and long-term (>12 months) after CORA-based leveling osteotomy (CBLO). STUDY DESIGN: Case series. ANIMALS: Dogs (n = 41) with second-look arthroscopy of the stifle after CBLO for treatment of a cranial cruciate ligament (CCL) deficiency. Both stifles were re-evaluated (stifles n = 42) in 1 dog. METHODS: Medical records of dogs that had second-look arthroscopy after CBLO were reviewed...
September 8, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28878535/atraumatic-sequential-bilateral-locking-of-the-knee-joints-secondary-to-dislocation-of-non-discoid-lateral-menisci-without-radiological-abnormality
#6
Zakir Haider, Mujahid Ali Syed, Deepak Saran
Lateral meniscus dislocation, as a cause of atraumatic knee locking, is often attributed to a discoid meniscus which can be readily diagnosed on MRI. In the absence of radiological abnormality, a dislocated lateral meniscus is a rare occurrence. We present a case of a 14 year old male who presented with atraumatic sequential locking of bilateral knees 6 months apart. Although on both occasions, MRI was normal, arthroscopy demonstrated dislocating lateral menisci that were subsequently surgically stabilised...
August 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28865948/a-new-topical-hemostatic-agent-tt-173-reduces-blood-loss-in-a-sheep-model-of-total-knee-arthroplasty
#7
Alberto Centeno, Santiago Rojas, Belén Arias, Ignasi Miquel, Pilar Sánchez, Claudia Ureta, Esther Rincón, Ramón López, Jesús Murat
BACKGROUND: Total knee arthroplasty is associated with blood loss during the intervention and may require allogenic blood transfusion. Treatments such as tranexamic acid and fibrin sealants improved the bleeding control in several clinical trials, but the hemorrhage associated with the intervention is still significant. Thus far, very few studies have evaluated hemostatic treatments in animal models of total knee arthroplasty. This work describes a sheep model of bleeding associated with total knee arthroplasty and investigates a new class of hemostatic treatment based on recombinant tissue factor...
August 30, 2017: Knee
https://www.readbyqxmd.com/read/28865577/saucerization-versus-complete-resection-of-a-symptomatic-discoid-lateral-meniscus-at-short-and-long-term-follow-up-a-systematic-review
#8
REVIEW
Dallas M Smuin, Richard D Swenson, Aman Dhawan
PURPOSE: To evaluate the surgical outcomes of symptomatic discoid menisci after total meniscectomy, saucerization, and suture repair of tears of a discoid meniscus at short- and long-term follow-up. METHODS: A systematic review was conducted using the Pubmed and ScienceDirect databases in adherence with Preferred Reporting Items of Systematic Reviews and Meta-Analysis guidelines. Short- and long-term follow-up were defined as an average follow-up of <4 years and >4 years, respectively...
September 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28856482/hyperextension-injuries-of-the-knee-do-patterns-of-bone-bruising-predict-soft-tissue-injury
#9
A M Ali, J K Pillai, V Gulati, C E R Gibbons, B J Roberton
OBJECTIVE: To establish whether patterns of soft tissue injury following knee hyperextension are associated with post-traumatic 'bone bruise' distribution. MATERIALS AND METHODS: Patients with a knee MRI within one year of hyperextension injury were identified at our institution over a 7 year period. MRIs, plain radiographs and clinical details of these patients were reviewed. RESULTS: Twenty-five patients were identified (median time from injury to MRI = 24 days)...
August 31, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28852795/-meniscal-lesion-pre-osteoarthrotic-condition-of-the-knee-joint
#10
REVIEW
L Goebel, J Reinhard, H Madry
BACKGROUND: A close relationship between meniscal damage and articular cartilage exist. Likewise, (partial) meniscectomy may lead to the development of osteoarthritis (OA). OBJECTIVES: With a special emphasis on therapeutic consequences for orthopaedic surgeons, the structural and functional relationship between meniscal tears/extrusion and cartilage loss, and/or the effect of meniscectomy or meniscal repair on the development of OA, are emphasized. MATERIALS AND METHODS: A selective literature review with implementation of own research findings...
August 29, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28844199/cryopreservation-versus-fresh-frozen-meniscal-allograft-a-biomechanical-comparative-analysis
#11
Shukur Ahmad, Vivek Ajit Singh, Shamsul Iskandar Hussein
Meniscal allograft transplantation may be a better alternative for the treatment of irreparable meniscal injury compared to other forms of treatment. However, it remains to be seen whether the use fresh frozen allograft is better than cryopreserved allograft in treating this type of injury. We hypothesized that cryopreserved meniscal allograft would work better in maintaining the original biomechanical properties compared to fresh frozen ones, due to the lower amount of damage it incurs during the storage process...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28832324/the-morphological-anatomy-of-the-menisci-of-the-knee-joint-in-human-fetuses
#12
Esra Koyuncu, Gülnur Özgüner, Kenan Öztürk, Cemil Bilkay, Ahmet Dursun, Osman Sulak
BACKGROUND: Development of the fetal period of the meniscus has been reported in different studies. AIMS: Evaluation of the lateral and the medial menisci development, typing and the relationship of the tibia during the fetal period. STUDY DESIGN: Anatomical dissection. METHODS: We were evaluated 210 knee meniscus obtained from 105 human fetuses that in age from 9-40 weeks. Fetuses were divided into four groups. Intraarticular structure were exposed...
August 23, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28830272/bone-morphological-factors-influencing-cartilage-degeneration-in-the-knee
#13
Kenji Takahashi, Sanshiro Hashimoto, Shinji Kiuchi, Atsuya Watanabe, Hiroshi Nakamura, Futoshi Ikuta, Tomoyuki Okuaki, Tatsunori Kataoka, Tokifumi Majima, Shinro Takai
OBJECTIVES: Morphological features of the distal femur and proximal tibia associated with cartilage degeneration are unknown. This study aimed to elucidate local anatomical parameters of the knee which correlate with articular cartilage degeneration using MRI T1ρ mapping. METHODS: This study involved 200 subjects with knee pain (mean age, 48.7 years; range, 14-80 years) with no severe osteoarthritic changes on plain X-ray. T1ρ values were measured in the regions of interest on the surface layer of the cartilage on mid-coronal images of the femorotibial joint...
August 23, 2017: Modern Rheumatology
https://www.readbyqxmd.com/read/28828452/bio-inspired-liquid-transport-via-elastocapillary-interaction-of-a-thin-membrane-with-a-liquid-meniscus
#14
R A Samy, D George, A K Sen
We report bio-inspired (from a hummingbird's tongue) liquid transport via elastocapillary interaction of a thin membrane with a liquid meniscus. A soft wedge-thin rectangular membrane forming a wedge with a rigid substrate and a flat thin rectangular membrane undergo large deformation while interacting with liquid menisci. The membrane deformation leads to the formation of confinement which in turn results in elastocapillary flow along the membrane length. A simple theoretical model based on the Euler Bernoulli law is used to predict the membrane deformation profiles, which compare well with that obtained from experiments...
August 22, 2017: Soft Matter
https://www.readbyqxmd.com/read/28819604/posterior-knee-loose-bodies-treated-by-posterior-knee-arthroscopy
#15
Ho Lam Chai, Tun Hing Lui
INTRODUCTION: The posterior portion of the knee joint, which includes the tibial attachment of the posterior cruciate ligament and the posterior horn of the menisci, has been called a "blind spot" because it is difficult to observe this area under arthroscopy through standard anterior portals. Posteromedial, posterolateral, and posterior transseptal portals have been developed for visualization and instrumentation of the posteromedial and posterolateral compartments of the knee joint...
March 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28809636/-arthroscopic-finding-of-knee-joint-in-relation-to-age-and-its-comparison-with-pre-operative-clinical-finding-a-retrospective-study
#16
P Látal, K Šimeček, M Kloub
PURPOSE OF THE STUDY In the retrospective study of two South Bohemian centres we present the comparison of pre-operative anamnestic clinical signs in relation to the arthroscopic intraoperative finding. The obtained data is used also to evaluate the arthroscopic finding in relation to age and sex. MATERIAL AND METHODS The arthroscopic findings of patients who underwent surgery in 2013-2014 period (1.1.2013-31.12.2014) at the Department of Trauma Surgery of České Budějovice Hospital, a.s. and in 2014 (1.1...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28805136/the-ovine-model-for-meniscus-tissue-engineering-considerations-of-anatomy-function-implantation-and-evaluation
#17
Andrzej Brzezinski, Salim A Ghodbane, Jay M Patel, Barbara A Perry, Charles J Gatt, Michael G Dunn
Meniscus injuries represent one of the most-common intra-articular knee injuries. The current treatment options include meniscectomy and allograft transplantation, both with poor long-term outcomes. Therefore, there is a need for regenerative techniques to restore meniscal function. In order to pre-clinically test scaffolds for meniscus replacement, large-animal models need to be established and standardized. This review establishes the anatomical and compositional similarities between the human and sheep menisci and provides guidance for implantation and evaluation of such devices...
August 12, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28801209/compromised-autophagy-precedes-meniscus-degeneration-and-cartilage-damage-in-mice
#18
J K Meckes, B Caramés, M Olmer, W B Kiosses, S P Grogan, M K Lotz, D D D'Lima
OBJECTIVE: Autophagy is a cellular homeostasis mechanism that facilitates normal cell function and survival. Objectives of this study were to determine associations between autophagic responses with meniscus injury, joint aging, and osteoarthritis (OA), and to establish the temporal relationship with structural changes in menisci and cartilage. METHODS: Constitutive activation of autophagy during aging was measured in GFP-LC3 transgenic reporter mice between 6 and 30 months...
August 8, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28780004/prognostic-factors-for-all-inside-meniscal-repair-a-87-case-series
#19
L Laurendon, T Neri, F Farizon, R Philippot
INTRODUCTION: Repair is indicated for tears in non-degenerative menisci. The literature reports a 15% failure rate for all-inside repair. The aim of the present study was to determine prognostic factors for failure of all-inside meniscal repair. The study hypothesis was that epidemiological, clinical and surgical factors affect success. MATERIAL AND METHODS: A retrospective study included 87 meniscal repair procedures, with or without anterior cruciate ligament (ACL) tear...
August 2, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28772725/wear-distribution-detection-of-knee-joint-prostheses-by-means-of-3d-optical-scanners
#20
Saverio Affatato, Maria Cristina Valigi, Silvia Logozzo
The objective of this study was to examine total knee polyethylene inserts from in vitro simulation to evaluate and display-using a 3D optical scanner-wear patterns and wear rates of inserts exposed to wear by means of simulators. Various sets of tibial inserts have been reconstructed by using optical scanners. With this in mind, the wear behavior of fixed and mobile bearing polyethylene knee configurations was investigated using a knee wear joint simulator. After the completion of the wear test, the polyethylene menisci were analyzed by an innovative 3D optical scanners in order to evaluate the 3D wear distribution on the prosthesis surface...
March 30, 2017: Materials
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