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Knee cartilage injury

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https://www.readbyqxmd.com/read/28944439/hyperintense-signal-alteration-in-the-suprapatellar-fat-pad-on-mri-is-associated-with-degeneration-of-the-patellofemoral-joint-over-48%C3%A2-months-data-from-the-osteoarthritis-initiative
#1
Benedikt J Schwaiger, John Mbapte Wamba, Alexandra S Gersing, Michael C Nevitt, Luca Facchetti, Charles E McCulloch, Thomas M Link
OBJECTIVE: To analyze associations of suprapatellar fat pad (SPFP) hyperintense signal alterations and mass effect with progression of patellofemoral osteoarthritis (OA) and clinical symptoms over 48 months. MATERIALS AND METHODS: Subjects from the Osteoarthritis Initiative (n = 426; 51.8 ± 3.8 years; 49.8% women) without radiographic tibiofemoral OA underwent 3T-MRI of their right knees and clinical evaluation using the Knee Injury and Osteoarthritis Outcome Score at baseline and at 48 months...
September 24, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28933331/-comparison-of-the-arthroscopic-finding-in-the-knee-joint-and-the-mri-retrospective-study
#2
K Šimeček, P Látal, J Duda, M Šimeček
PURPOSE OF THE STUDY Our retrospective study presents the comparison of the preoperative magnetic resonance imaging of the knee joint - MRI - and the arthroscopic finding - ASC. Its aim is to find out how a positive or a negative finding of MRI corresponds with the operative finding and how much the experience of radiologist contributes to the conformity. MATERIAL AND METHODS The MRI findings of knee joints treated surgically at two departments in 2013 and 2014 were assessed. The MRI was performed in a total of 470 patients who subsequently underwent an arthroscopic surgery...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28919498/accelerated-return-to-sport-after-acl-reconstruction-and-early-knee-osteoarthritis-features-at-1-year-an-exploratory-study
#3
Adam G Culvenor, Brooke E Patterson, Ali Guermazi, Hayden G Morris, Timothy S Whitehead, Kay M Crossley
BACKGROUND: A timely return to competitive sport is a primary goal of anterior cruciate ligament reconstruction (ACLR). It is not known if an accelerated return-to-sport increases the risk of early-onset knee osteoarthritis (KOA). OBJECTIVE: To determine whether an accelerated return-to-sport post-ACLR (i.e., <10 months) is associated with increased odds of early KOA features on MRI 1-year post-surgery, and to evaluate the relationship between an accelerated return-to-sport and early KOA features stratified by type of ACL injury (isolated or concurrent chondral/meniscal injury) and lower-limb function (good or poor)...
September 14, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28910133/a-comparison-of-2-year-outcomes-in-patients-undergoing-tibiofemoral-or-patellofemoral-matrix-induced-autologous-chondrocyte-implantation
#4
Jay R Ebert, Adrian Schneider, Michael Fallon, David J Wood, Gregory C Janes
BACKGROUND: Matrix-induced autologous chondrocyte implantation (MACI) has demonstrated encouraging clinical results in the treatment of knee chondral defects. However, earlier studies suggested that chondrocyte implantation in the patellofemoral (PF) joint was less effective than in the tibiofemoral (TF) joint. PURPOSE: To compare the radiological and clinical outcomes of those undergoing MACI to either the femoral condyles or PF joint. STUDY DESIGN: Cohort study; Level of evidence, 3...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28906016/cxcl10-is-upregulated-in-synovium-and-cartilage-following-articular-fracture
#5
Bridgette D Furman, Collin L Kent, Janet L Huebner, Virginia B Kraus, Amy L McNulty, Farshid Guilak, Steven A Olson
The objective of this study was to investigate the expression of the chemokine CXCL10 and its role in joint tissues following articular fracture. We hypothesized that CXCL10 is upregulated following articular fracture and contributes to cartilage degradation associated with post-traumatic arthritis (PTA). To evaluate CXCL10 expression following articular fracture, gene expression was quantified in synovial tissue from knee joints of C57BL/6 mice that develop PTA following articular fracture, and MRL/MpJ mice that are protected from PTA...
September 14, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28904358/monitoring-osteoarthritis-progression-using-near-infrared-nir-spectroscopy
#6
Isaac O Afara, Indira Prasadam, Zohreh Arabshahi, Yin Xiao, Adekunle Oloyede
We demonstrate in this study the potential of near infrared (NIR) spectroscopy as a tool for monitoring progression of cartilage degeneration in an animal model. Osteoarthritic degeneration was artificially induced in one joint in laboratory rats, and the animals were sacrificed at four time points: 1, 2, 4, and 6 weeks (3 animals/week). NIR spectra were acquired from both (injured and intact) knees. Subsequently, the joint samples were subjected to histological evaluation and glycosaminoglycan (GAG) content analysis, to assess disease severity based on the Mankin scoring system and to determine proteoglycan loss, respectively...
September 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28894756/relationships-between-tibiofemoral-contact-forces-and-cartilage-morphology-at-2-to-3-years-after-single-bundle-hamstring-anterior-cruciate-ligament-reconstruction-and-in-healthy-knees
#7
David John Saxby, Adam L Bryant, Xinyang Wang, Luca Modenese, Pauline Gerus, Jason M Konrath, Kim L Bennell, Karine Fortin, Tim Wrigley, Flavia M Cicuttini, Christopher J Vertullo, Julian A Feller, Tim Whitehead, Price Gallie, David G Lloyd
BACKGROUND: Prevention of knee osteoarthritis (OA) following anterior cruciate ligament (ACL) rupture and reconstruction is vital. Risk of postreconstruction knee OA is markedly increased by concurrent meniscal injury. It is unclear whether reconstruction results in normal relationships between tibiofemoral contact forces and cartilage morphology and whether meniscal injury modulates these relationships. HYPOTHESES: Since patients with isolated reconstructions (ie, without meniscal injury) are at lower risk for knee OA, we predicted that relationships between tibiofemoral contact forces and cartilage morphology would be similar to those of normal, healthy knees 2 to 3 years postreconstruction...
August 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28893426/outcomes-after-double-bundle-anterior-cruciate-ligament-reconstruction
#8
Ji Hyun Ahn, Ho Won Kang, Kug Jin Choi
PURPOSE: To identify the risk factors predicting unsatisfactory postoperative clinical outcomes after double-bundle (DB) anterior cruciate ligament (ACL) reconstruction using multivariate logistic regression. METHODS: Inclusion criteria were consecutive DB ACL reconstructions from January 2006 to September 2012 with a minimum 3-year follow-up. Exclusion criteria included (1) a delay to surgery from initial injury of more than 4 years (210 weeks); (2) contralateral knee pathology; (3) the lack of postoperative 3-dimensional computed tomography; (4) single-bundle ACL reconstruction; (5) revision ACL reconstruction; (6) meniscus allograft transplantation after total or subtotal meniscectomy; (7) multiple ligament surgeries...
September 8, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28888901/oral-administration-of-undenatured-native-chicken-type-ii-collagen-uc-ii-diminished-deterioration-of-articular-cartilage-in-a-rat-model-of-osteoarthritis-oa
#9
C M Bagi, E R Berryman, S Teo, N E Lane
OBJECTIVE: The aim of this study was to determine the ability of undenatured native chicken type II collagen (UC-II) to prevent excessive articular cartilage deterioration in a rat model of osteoarthritis (OA). METHODS: Twenty male rats were subjected to partial medial meniscectomy tear (PMMT) surgery to induce OA. Immediately after the surgery 10 rats received vehicle and another 10 rats oral daily dose of UC-II at 0.66 mg/kg for a period of 8 weeks. In addition 10 naïve rats were used as an intact control and another 10 rats received sham surgery...
September 6, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28887704/-indication-and-limitations-of-meniscus-replacement
#10
REVIEW
C Stärke, S Kopf, R Becker
BACKGROUND: Meniscal lesions are among the most important musculoskeletal disorders and are the most common indication for knee joint arthroplasty. However, the structural integrity and function is rarely retained, and a loss of tissue results. Thus, there is a huge demand for meniscal replacement options. CURRENT PROCEDURES: Autografts were used in the past but did not fulfill expectations. Meniscus allografts have been developed to be a viable treatment option...
September 8, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28875154/structural-and-anatomic-restoration-of-the-anterior-cruciate-ligament-is-associated-with-less-cartilage-damage-1-year-after-surgery-healing-ligament-properties-affect-cartilage-damage
#11
Ata M Kiapour, Braden C Fleming, Martha M Murray
BACKGROUND: Abnormal joint motion has been linked to joint arthrosis after anterior cruciate ligament (ACL) reconstruction. However, the relationships between the graft properties (ie, structural and anatomic) and extent of posttraumatic osteoarthritis are not well defined. HYPOTHESES: (1) The structural (tensile) and anatomic (area and alignment) properties of the reconstructed graft or repaired ACL correlate with the total cartilage lesion area 1 year after ACL surgery, and (2) side-to-side differences in anterior-posterior (AP) knee laxity correlate with the total cartilage lesion area 1 year postoperatively...
August 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28859619/analysis-of-dna-methylation-in-chondrocytes-in-rats-with-knee-osteoarthritis
#12
Xinxin Wang, Dezhi Tang, Peng Shen, Hao Xu, Hongfu Qiu, Tao Wu, Xiang Gao
BACKGROUND: Knee osteoarthritis (KOA) is a degenerative knee disease commonly found in the ageing population. DNA methylation works with histone acetylation to participate in aging. Alterations of DNA methylation may involve the joint chondrocyte degeneration in KOA. The aim of this study is to detect DNA methylation changes in chondrocytes of rats with KOA. METHODS: The rat KOA model was established with the Hulth method (n = 10), while rats receiving sham operation served as the control (n = 10)...
August 31, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28853609/in%C3%A2-vitro-development-of-personalized-cartilage-microtissues-uncovers-an-individualized-differentiation-capacity-of-human-chondrocytes
#13
Frank Martin, Mario Lehmann, Ulrich Sack, Ursula Anderer
Personalized features in the treatment of knee injuries and articular replacement therapies play an important role in modern life with increasing demand. Therefore, cell-based therapeutic approaches for the regeneration of traumatic defects of cartilage tissue were developed. However, great variations in the quality of repair tissue or therapeutic outcome were observed. The aim of the study was to capture and visualize individual differentiation capacities of chondrocytes derived from different donors with regard to a possible personal regeneration capacity using a cell-based therapy...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28852821/conservatively-treated-knee-injury-is-associated-with-knee-cartilage-matrix-degeneration-measured-with-mri-based-t2-relaxation-times-data-from-the-osteoarthritis-initiative
#14
Felix C Hofmann, Jan Neumann, Ursula Heilmeier, Gabby B Joseph, Michael C Nevitt, Charles E McCulloch, Thomas M Link
OBJECTIVE: To investigate the association of cartilage degeneration with previous knee injuries not undergoing surgery, determined by morphologic and quantitative 3-T magnetic resonance imaging (MRI). MATERIALS AND METHODS: We performed a nested cross-sectional study of right knee MRIs from participants in the Osteoarthritis Initiative (OAI) aged 45-79 with baseline Kellgren-Lawrence score of 0-2. Cases were 142 right knees of patients with self-reported history of injury limiting the ability to walk for at least 2 days...
August 29, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28840952/metabolic-dysregulation-accelerates-injury-induced-joint-degeneration-driven-by-local-inflammation-an-in-vivo-rat-study
#15
Huub M de Visser, Simon C Mastbergen, Anne E Kozijn, K Coeleveld, B Pouran, Mattie H van Rijen, Floris Pjg Lafeber, Harrie Weinans
Evidence is growing for the existence of an obesity-related phenotype of osteoarthritis in which low-grade inflammation and a disturbed metabolic profile play a role. The contribution of an obesity induced metabolic dysbalance to the progression of the features of osteoarthritis upon mechanically induced cartilage damage was studied in a rat in vivo model. Forty Wistar rats were randomly allocated 1:1 to a standard diet or a high-fat diet. After 12 weeks, in 14 out of 20 rats in each group, cartilage was mechanically damaged in the right knee joint...
August 25, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28834442/mri-of-native-knee-cartilage-delamination-injuries
#16
Candace L White, Nancy A Chauvin, Gregory R Waryasz, Bradford T March, Michael L Francavilla
OBJECTIVE: The purpose of this article is to describe the normal imaging appearance of cartilage and the pathophysiologic findings, imaging appearance, and surgical management of cartilage delamination. CONCLUSION: Delamination injuries of knee cartilage signify surgical lesions that can lead to significant morbidity without treatment. These injuries may present with clinical symptoms identical to those associated with meniscal injury, and arthroscopic identification can be difficult, thereby creating a role for imaging diagnosis...
August 23, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28832200/use-of-particulated-juvenile-articular-cartilage-allograft-for-osteochondral-lesions-of-the-wrist
#17
Daniel E Hess, Brian C Werner, D Nicole Deal
BACKGROUND: Articular cartilage injuries are a common injury among young, active patients, and the most appropriate treatment for these injuries remains controversial. A promising new technology in the treatment of high-grade cartilage injuries is particulated juvenile articular cartilage (PJAC) allograft (DeNovo NT, Zimmer, Warsaw, Indiana). This has been shown to be successful in multiple joints including the knee, talus, and elbow. No studies or case reports exist in supporting or discouraging its use in injuries of the wrist, in specific, the scaphoid...
September 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28831830/biological-treatment-of-the-knee-with-platelet-rich-plasma-or-bone-marrow-aspirate-concentrates
#18
Gilbert Moatshe, Elizabeth R Morris, Mark E Cinque, Cecilia Pascual-Garrido, Jorge Chahla, Lars Engebretsen, Robert F Laprade
- Knee pathologies including focal cartilage injuries, osteoarthritis (OA), and ligament injuries are common. The poor regeneration and healing potential of cartilage has led to the search for other treatment modalities with improved healing capacity. Furthermore, with an increasing elderly population that desires to remain active, the burden of knee pathologies is expected to increase. Increased sports participation and the desire to return to activities faster is also demanding more effective and minimally invasive treatment options...
August 23, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28831524/-meniscal-root-lesions-clinical-relevance-and-treatment
#19
REVIEW
S Kopf, C Stärke, R Becker
Meniscal roots play an important role in load distribution of the tibiofemoral knee joint. Thus, meniscal root tears are severe injuries of the knee, which significantly expose cartilage to increased stress. Two entities are distinguished: (i) acute root tears that mainly affect the posterolateral root and often occur with ruptures of the anterior cruciate ligament; and (ii) chronic, degenerative root tears that mainly affect the posteromedial root. For diagnosis of both entities, the patient's medical history, a knee examination and especially MRI play key roles...
August 22, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28819590/minimally-invasive-total-hip-replacement-in-an-ipsilateral-post-traumatic-above-knee-amputation-a-case-report
#20
Sanjeev Patnaik, Biswaranjan Nayak, Akshaya Kumar Sahoo, Nabin Kumar Sahu
INTRODUCTION: Total hip replacement (THR) is a highly successful operation in alleviating pain and improving the overall function of the hip, in end-stage arthritis of the hip, in otherwise fit patients. However, THR as a surgical option in post-traumatic hip arthritis with ipsilateral above-knee amputation is rarely reported. CASE REPORT: We are presenting a case report of a 30-year-old male, who had previously underwent an above-knee amputation due to road-traffic accident, presenting 24 h after the injury with segmental fracture femur and popliteal artery laceration, for which the limb could not be salvaged...
March 2017: Journal of Orthopaedic Case Reports
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