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Knee cartilage injury

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https://www.readbyqxmd.com/read/28646530/pirfenidone-reduces-subchondral-bone-loss-and-fibrosis-after-murine-knee-cartilage-injury
#1
Deva D Chan, Jun Li, Wei Luo, Dan N Predescu, Brian J Cole, Anna Plaas
Pirfenidone is an anti-inflammatory and anti-fibrotic drug that has shown efficacy in lung and kidney fibrosis. Because inflammation and fibrosis have been linked to the progression of osteoarthritis, we investigated the effects of oral Pirfenidone in a mouse model of cartilage injury, which results in chronic inflammation and joint-wide fibrosis in mice that lack hyaluronan synthase 1 (Has1(-/-) ) in comparison to wild-type. Femoral cartilage was surgically injured in wild-type and Has1(-/-) mice, and Pirfenidone was administered in food starting after 3 days...
June 23, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28645697/clinical-high-resolution-mapping-of-the-proteoglycan-bound-water-fraction-in-articular-cartilage-of-the-human-knee-joint
#2
Mustapha Bouhrara, David A Reiter, Kyle W Sexton, Christopher M Bergeron, Linda M Zukley, Richard G Spencer
PURPOSE: We applied a recently introduced method to achieve clinically-feasible in-vivo mapping of the proteoglycan water fraction (PgWF) of human knee cartilage with improved spatial resolution and stability as compared to existing methods. MATERIAL AND METHODS: Multicomponent driven equilibrium single-pulse observation of T1 and T2 (mcDESPOT) datasets were acquired from the knees of two healthy young subjects and one older subject with previous knee injury. Each dataset was processed using Bayesian Monte Carlo (BMC) analysis incorporating a two-component tissue model...
June 20, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28636254/pirfenidone-reduces-subchondral-bone-loss-and-fibrosis-after-murine-knee-cartilage-injury
#3
Deva D Chan, Jun Li, Wei Luo, Dan N Predescu, Brian J Cole, Anna Plaas
Pirfenidone is an anti-inflammatory and anti-fibrotic drug that has shown efficacy in lung and kidney fibrosis. Because inflammation and fibrosis have been linked to the progression of osteoarthritis, we investigated the effects of oral Pirfenidone in a mouse model of cartilage injury, which results in chronic inflammation and joint-wide fibrosis in mice that lack hyaluronan synthase 1 (Has1(-/-) ) in comparison to wild-type. Femoral cartilage was surgically injured in wild-type and Has1(-/-) mice, and Pirfenidone was administered in food starting after 3 days...
June 21, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28631112/risk-of-revision-was-not-reduced-by-a-double-bundle-acl-reconstruction-technique-results-from-the-scandinavian-registers
#4
Cathrine Aga, Jüri-Tomas Kartus, Martin Lind, Stein Håkon Låstad Lygre, Lars-Petter Granan, Lars Engebretsen
BACKGROUND: Double-bundle anterior cruciate ligament (ACL) reconstruction has demonstrated improved biomechanical properties and moderately better objective outcomes compared with single-bundle reconstructions. This could make an impact on the rerupture rate and reduce the risk of revisions in patients undergoing double-bundle ACL reconstruction compared with patients reconstructed with a traditional single-bundle technique. The National Knee Ligament Registers in Scandinavia provide information that can be used to evaluate the revision outcome after ACL reconstructions...
June 19, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28621703/pain-sensation-in-human-osteoarthritic-knee-joints-is-strongly-enhanced-by-diabetes-mellitus
#5
Annett Eitner, Julia Pester, Franziska Vogel, Ivan Marintschev, Thomas Lehmann, Gunther O Hofmann, Hans-Georg Schaible
The major burden of knee joint osteoarthritis (OA) is pain. Since in elder patients diabetes mellitus is an important comorbidity of OA we explored whether the presence of diabetes mellitus has a significant influence on pain intensity at the end stage of knee OA, and we aimed to identify factors possibly related to changes of pain intensity in diabetic patients. In 23 diabetic and 47 non-diabetic OA patients undergoing total knee arthroplasty, we assessed the pain intensity before the operation using the "Knee injury and Osteoarthritis Outcome score" (KOOS)...
June 8, 2017: Pain
https://www.readbyqxmd.com/read/28620621/matrix-assisted-autologous-chondrocyte-transplantation-in-the-knee-a-systematic-review-of-mid-to-long-term-clinical-outcomes
#6
REVIEW
Hayden B Schuette, Matthew J Kraeutler, Eric C McCarty
BACKGROUND: Matrix-assisted autologous chondrocyte transplantation (MACT) is a surgical treatment option for articular cartilage lesions of the knee joint. PURPOSE: To investigate mid- to long-term clinical outcomes of MACT in the patellofemoral (PF) and tibiofemoral (TF) joints. STUDY DESIGN: Systematic review; Level of evidence, 4. METHODS: A systematic review was performed by searching PubMed, Embase, and the Cochrane Library to find studies evaluating minimum 5-year clinical outcomes of patients undergoing MACT in the knee joint...
June 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28618872/outcomes-of-patellofemoral-osteochondral-lesions-treated-with-structural-grafts-in-patients-older-than-40-years
#7
Ryan M Degen, Nathan W Coleman, Danielle Tetreault, Brenda Chang, Greg T Mahony, Christopher L Camp, Shawn G Anthony, Riley J Williams
Background Chondral lesions in the patellofemoral compartment represent a difficult entity to treat among active patients, with no clear consensus on the optimal treatment strategy. The purpose of this study was to review the functional outcomes of patients >40 years old with primary patellofemoral osteochondral lesions who underwent a cartilage restoration procedure with a structural graft. Methods Following institutional review board approval, 35 patients >40 years treated for patellofemoral chondral or osteochondral injuries were retrospectively identified...
July 2017: Cartilage
https://www.readbyqxmd.com/read/28607768/platelet-rich-plasma-prp-for-knee-disorders
#8
REVIEW
Mohammad Shahid, Rik Kundra
Platelet-rich plasma (PRP) is an autologous blood product with platelet concentrations above baseline values. The process involves the extraction of blood from the patient which is then centrifuged to obtain a concentrated suspension of platelets by plasmapheresis. It then undergoes a two-stage centrifugation process to separate the solid and liquid components of the anticoagulated blood. PRP owes its therapeutic use to the growth factors released by the platelets which are claimed to possess multiple regenerative properties...
January 2017: EFORT open reviews
https://www.readbyqxmd.com/read/28596973/quadriceps-strength-in-patients-with-isolated-cartilage-defects-of-the-knee-results-of-isokinetic-strength-measurements-and-their-correlation-with-clinical-and-functional-results
#9
Anja Hirschmüller, Tasja Andres, Wolfgang Schoch, Heiner Baur, Lukas Konstantinidis, Norbert P Südkamp, Philipp Niemeyer
BACKGROUND: Recent studies have found a significant deficit of maximum quadriceps strength after autologous chondrocyte implantation (ACI) of the knee. However, it is unclear whether muscular strength deficits in patients with cartilage damage exist prior to operative treatment. PURPOSE: To isokinetically test maximum quadriceps muscle strength and quantify the impact of possible strength deficits on functional and clinical test results. STUDY DESIGN: Cross-sectional study; Level of evidence, 3...
May 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28594526/the-four-most-common-types-of-knee-cartilage-damage-encountered-in-practice-how-and-why-orthopaedic-surgeons-manage-them
#10
Brian J Chilelli, Brian J Cole, Jack Farr, Christian Lattermann, Andreas H Gomoll
Cartilage damage of the knee is common and may present in patients as a variety of symptoms. These conditions can be classified based on location, etiology, and/or pathophysiology. A systematic approach to the evaluation and classification of chondral injuries helps improve definitive management. The four most common types of knee cartilage damage are osteochondritis dissecans, incidental chondral defects, patellofemoral defects, and defects encountered after meniscectomy.
February 15, 2017: Instructional Course Lectures
https://www.readbyqxmd.com/read/28593387/increased-odds-of-patient-reported-success-at-2%C3%A2-years-after-anterior-cruciate-ligament-reconstruction-in-patients-without-cartilage-lesions-a-cohort-study-from-the-swedish-national-knee-ligament-register
#11
Eric Hamrin Senorski, Eduard Alentorn-Geli, Volker Musahl, Freddie Fu, Ferid Krupic, Neel Desai, Olof Westin, Kristian Samuelsson
PURPOSE: To investigate whether the surgical technique of single-bundle anterior cruciate ligament (ACL) reconstruction, the visualization of anatomic surgical factors and the presence or absence of concomitant injuries at primary ACL reconstruction are able to predict patient-reported success and failure. The hypothesis of this study was that anatomic single-bundle surgical procedures would be predictive of patient-reported success. METHODS: This cohort study was based on data from the Swedish National Knee Ligament Register during the period of 1 January 2005 through 31 December 2014...
June 7, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28589161/arthroscopic-mechanical-chondroplasty-of-the-knee-is-beneficial-for-treatment-of-focal-cartilage-lesions-in-the-absence-of-concurrent-pathology
#12
Devon E Anderson, Michael B Rose, Aaron J Wille, Jack Wiedrick, Dennis C Crawford
BACKGROUND: Articular cartilage lacks the ability for intrinsic repair after acute injury, and focal articular cartilage lesions cause significant morbidity worldwide. Arthroscopic debridement (chondroplasty) represents the majority of cartilage procedures of the knee; however, limited data exist regarding outcomes after chondroplasty performed in isolation of concurrent procedures or not as a primary treatment for osteoarthritis (OA). HYPOTHESIS: Arthroscopic mechanical chondroplasty is beneficial for patients with a focal cartilage lesion of the knee in the absence of meniscal pathology or OA...
May 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28589159/demographics-and-injuries-associated-with-knee-dislocation-a-prospective-review-of-303-patients
#13
Gilbert Moatshe, Grant J Dornan, Sverre Løken, Tom C Ludvigsen, Robert F LaPrade, Lars Engebretsen
BACKGROUND: Information on the incidence, injury mechanisms, ligament injury patterns, and associated injuries of knee dislocations is lacking in the literature. There is a need to characterize ligament injury patterns and associated injuries in knee dislocations to avoid missing common associated diagnoses and to plan surgical treatment. PURPOSE: To evaluate patient demographics, ligament injury patterns and associated injury patterns, and associated injuries in patients with knee dislocation...
May 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28589157/return-to-preoperative-function-after-autologous-cartilage-implantation-of-the-knee-in-active-military-servicemembers
#14
Nicholas J Zarkadis, Nicholas A Kusnezov, EStephan J Garcia, Mark P Pallis, Brian R Waterman
BACKGROUND: Autologous chondrocyte implantation (ACI) has been shown to provide adequate durability, pain relief, and improved long-term functional outcomes in the average patient, but proof of its efficacy in individuals with greater than average physical demands is scarce. Further knowledge is required to understand which patients may benefit from ACI and to identify which risk factors are associated with failure to return to the preinjury activity level. PURPOSE: To determine the occupational outcomes, rates of reoperation, and variables predictive of suboptimal outcomes after ACI...
May 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28585319/structurally-and-functionally-optimized-silk-fibroin-gelatin-scaffold-using-3d-printing-to-repair-cartilage-injury-in-vitro-and-in-vivo
#15
Weili Shi, Muyang Sun, Xiaoqing Hu, Bo Ren, Jin Cheng, Chenxi Li, Xiaoning Duan, Xin Fu, Jiying Zhang, Haifeng Chen, Yingfang Ao
Articular cartilage repair remains a great challenge for clinicians and researchers. Recently, there emerges a promising way to achieve one-step cartilage repair in situ by combining endogenic bone marrow stem cells (BMSCs) with suitable biomaterials using a tissue engineering technique. To meet the increasing demand for cartilage tissue engineering, a structurally and functionally optimized scaffold is designed, by integrating silk fibroin with gelatin in combination with BMSC-specific-affinity peptide using 3D printing (3DP) technology...
June 6, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28580256/biologic-inlay-osteochondral-reconstruction-arthroscopic-one-step-osteochondral-lesion-repair-in-the-knee-using-morselized-bone-grafting-and-hyaluronic-acid-based-scaffold-embedded-with-bone-marrow-aspirate-concentrate
#16
Boguslaw Sadlik, Alberto Gobbi, Mariusz Puszkarz, Wojciech Klon, Graeme P Whyte
Cartilage injury of the knee that is associated with significant subchondral bone loss can result in great morbidity, and treatment options that provide durable repair are limited. Osteochondral autograft and allograft reconstruction of these lesions has been used extensively; however, these techniques often require a more invasive surgical exposure, and restoring the natural articular surface radius of curvature can be challenging, particularly in larger lesions. Cell-based repair of these lesions, using autologous chondrocytes in conjunction with bone grafting, has been used with success, although this procedure requires the patient to undergo 2 operations, and access is often restricted due to the high associated costs...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28577705/nonoperative-options-for-management-of-articular-cartilage-disease
#17
REVIEW
Sourav K Poddar, Luke Widstrom
Nonoperative options for articular cartilage injury are pervasive but have not shown to be curative. Recommendations for low-impact exercise and weight loss provide benefit and are a foundation for the treatment of osteoarthritis. Judicious use of NSAIDs and acetaminophen can be appropriate for pain management. Topical NSAIDs may be a treatment option with fewer side effects than its oral counterpart. Additionally, viscosupplementation injections are useful for mild to moderate knee osteoarthritis, whereas short-term pain relief is provided by intra-articular corticosteroid injections...
July 2017: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/28547586/both-isolated-and-multi-ligament-posterior-cruciate-ligament-reconstruction-results-in-improved-subjective-outcome-results-from-the-danish-knee-ligament-reconstruction-registry
#18
Martin Lind, Torsten Grønbech Nielsen, Kristian Behrndtz
PURPOSE: There are few descriptions of outcomes after posterior cruciate ligament (PCL) reconstruction in the literature due to the rarity of this type of knee injury. Since 2005, the Danish Knee Ligament Reconstruction Registry (DKRR) has monitored outcomes of PCL reconstructions. This study describes the epidemiology of PCL reconstruction and subsequent outcomes in a Danish population. METHODS: Of 23,253 knee ligament reconstructions performed in 2005-2015, 581 were registered as PCL reconstructions in the DKRR...
May 25, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28526923/focal-articular-prosthetic-resurfacing-for-the-treatment-of-full-thickness-articular-cartilage-defects-in-the-knee-12-year-follow-up-of-two-cases-and-review-of-the-literature
#19
C Becher, E B Cantiller
INTRODUCTION: The rationale of focal articular prosthetic resurfacing used as a primary arthroplasty procedure in the treatment of articular cartilage defects is still under debate. Conflicting reports raise concern about high rates of re-operations and continued development of osteoarthritis, while others have reported good outcomes. The goal of this paper is to present the long-term results of two patients with a 12-year follow-up and to report the results of a literature review. MATERIALS AND METHODS: Two patients (male, 70 years; female 63 years) with a follow-up of 12 years were reviewed...
May 19, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28520463/a-preclinical-assessment-of-early-continuous-passive-motion-and-treadmill-therapeutic-exercises-for-generating-chondroprotective-effects-after-anterior-cruciate-ligament-rupture
#20
Nai-Jen Chang, Kuan-Wei Lee, Chih-Jou Chu, Ming-You Shie, Pei-Hsi Chou, Chih-Chan Lin, Peir-In Liang
BACKGROUND: Anterior cruciate ligament (ACL) injury is a well-known risk factor for the development of posttraumatic osteoarthritis (PTOA). However, whether using continuous passive motion (CPM) with or without additional treadmill exercise (TRE) in early ACL injury might provide chondroprotective effects and further decrease the risk of PTOA has yet to be determined. HYPOTHESIS: CPM may offer an enhanced chondroprotective effect, but TRE may attenuate that effect due to the mechanical stress on the joint and inflammatory cytokines in the joint...
May 1, 2017: American Journal of Sports Medicine
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