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https://www.readbyqxmd.com/read/28935436/associations-between-mri-detected-early-osteophytes-and-knee-structure-in-older-adults-a-population-based-cohort-study
#1
Zhaohua Zhu, Laura L Laslett, Weiyu Han, Benny Antony, Feng Pan, Flavia Cicuttini, Graeme Jones, Changhai Ding
OBJECTIVES: To describe prevalence of osteophytes (OPs) detected only by magnetic resonance imaging (MRI) but not by standard X-ray in older adults and to evaluate longitudinal associations with knee structural changes. METHODS: 837 participants were randomly selected from the local community and had MRI scans to assess knee OPs and other structures. OPs detected only by MRI but not by standard X-ray were defined as MRI-detected early OPs (MRI-OPs for short). OPs detected by both MRI and X-ray were defined as established-OPs...
September 18, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28934866/initial-experience-with-synthetic-mri-of-the-knee-at-3t-comparison-with-conventional-t-1-weighted-imaging-and-t2-mapping
#2
Sunghoon Park, Kyu-Sung Kwack, Young Ju Lee, Sung-Min Gho, Hyun Young Lee
OBJECTIVE: To assess the feasibility and accuracy of synthetic magnetic resonance imaging (MRI) compared to conventional T1-weighted and multi-echo spin-echo (MESE) sequences for obtaining T2 values in the knee joint at 3 Tesla. METHODS: This retrospective study included 19 patients with normal findings in the knee joint who underwent both synthetic MRI and MESE pulse sequences for T2 quantification. T2 values of the two sequences at the articular cartilage, bone marrow, and muscle were measured...
September 21, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28933331/-comparison-of-the-arthroscopic-finding-in-the-knee-joint-and-the-mri-retrospective-study
#3
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/28929915/is-synovitis-detected-on-non-contrast-enhanced-magnetic-resonance-imaging-associated-with-serum-biomarkers-and-clinical-signs-of-effusion-data-from-the-osteoarthritis-initiative
#4
L A Deveza, V B Kraus, J E Collins, A Guermazi, F W Roemer, M C Nevitt, D J Hunter
OBJECTIVES: To determine the relationship between synovitis detected on non-contrast-enhanced (non-CE) magnetic resonance imaging (MRI), biochemical markers of inflammation, and clinical assessment of effusion in people with knee osteoarthritis (OA). METHOD: We examined data from the OA Biomarkers Consortium within the Osteoarthritis Initiative (n = 600). Non-CE MRIs were semi-quantitatively scored (grades 0-3) for severity of Hoffa synovitis and effusion synovitis...
September 20, 2017: Scandinavian Journal of Rheumatology
https://www.readbyqxmd.com/read/28926315/mri-arthroscopy-correlations-a-case-based-atlas-of-the-knee-shoulder-elbow-and-hip-edited-by-stephen-f-brockmeier-new-york-ny-springer-science-business-media-2015-isbn-978-1-4939-2644-2-hardcover-129-00-pp-481
#5
https://www.readbyqxmd.com/read/28919498/accelerated-return-to-sport-after-acl-reconstruction-and-early-knee-osteoarthritis-features-at-1-year-an-exploratory-study
#6
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/28918594/the-association-of-knee-structural-pathology-with-pain-at-the-knee-is-modified-by-pain-at-other-sites-in-those-with-knee-osteoarthritis
#7
Feng Pan, Jing Tian, Dawn Aitken, Flavia Cicuttini, Tania Winzenberg, Graeme Jones
The objective of this study was to investigate the associations of knee structural abnormalities with different patterns of pain. A total of 891 participants (average age 63 years; range 50 to 80 years) participated in this study. Presence of pain at the neck, back, hands, shoulders, hips, knees, and feet was assessed by questionnaire. Participants were categorized as having no pain at any site (no pain), pain only at the knee (KP), pain at other sites but not the knee (OP), and pain at the knee and other sites (KOP)...
September 16, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28918500/current-evidence-advocates-use-of-a-new-pathologic-tibial-tubercle-posterior-cruciate-ligament-distance-threshold-in-patients-with-patellar-instability
#8
REVIEW
Nickolas Boutris, Domenica A Delgado, John S Labis, Patrick C McCulloch, David M Lintner, Joshua D Harris
PURPOSE: To determine (1) whether a correlation exists between tibial tubercle-posterior cruciate ligament (TT-PCL) and tibial tubercle-trochlear groove (TT-TG) distances in patellar instability patients; (2) reliability when measuring TT-PCL distance; (3) whether TT-PCL distances measured on MRI are equivalent to those on CT; and (4) whether a correlation exists between TT-PCL distance and number of instability events or recurrence of instability following stabilization surgery. METHODS: A systematic review was performed using PRISMA guidelines...
September 16, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28917712/toward-classification-criteria-for-early-osteoarthritis-of-the-knee
#9
F P Luyten, S Bierma-Zeinstra, F Dell'Accio, V B Kraus, K Nakata, I Sekiya, N K Arden, L S Lohmander
OBJECTIVE: To propose draft classification criteria for early stage osteoarthritis (OA) of the knee for use in a primary care setting. METHODS: A group of basic scientists, physician-scientists, rheumatologists, orthopedic surgeons, and physiotherapists in a workshop setting discussed potential classification criteria for early osteoarthritis of the knee. The workshop was divided into sessions around relevant topics with short state of the art presentations followed by breakout sessions, consensus discussions, and consolidation into a consensus document...
August 9, 2017: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/28913600/a-multilayer-biomaterial-for-osteochondral-regeneration-shows-superiority-vs-microfractures-for-the-treatment-of-osteochondral-lesions-in-a-multicentre-randomized-trial-at-2-years
#10
Elizaveta Kon, Giuseppe Filardo, Mats Brittberg, Maurizio Busacca, Vincenzo Condello, Lars Engebretsen, Stefan Marlovits, Philipp Niemeyer, Patrik Platzer, Michael Posthumus, Peter Verdonk, Renè Verdonk, Jan Victor, Willem van der Merwe, Wojciech Widuchowski, Claudio Zorzi, Maurilio Marcacci
PURPOSE: The increasing awareness on the role of subchondral bone in the etiopathology of articular surface lesions led to the development of osteochondral scaffolds. While safety and promising results have been suggested, there are no trials proving the real potential of the osteochondral regenerative approach. Aim was to assess the benefit provided by a nanostructured collagen-hydroxyapatite (coll-HA) multilayer scaffold for the treatment of chondral and osteochondral knee lesions. METHODS: In this multicentre randomized controlled clinical trial, 100 patients affected by symptomatic chondral and osteochondral lesions were treated and evaluated for up to 2 years (51 study group and 49 control group)...
September 14, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28910722/analysis-of-in-vivo-articular-cartilage-contact-surface-of-the-knee-during-a-step-up-motion
#11
Peng Yin, Jing-Sheng Li, Willem A Kernkamp, Tsung-Yuan Tsai, Seung-Hoon Baek, Ali Hosseini, Lin Lin, Peifu Tang, Guoan Li
BACKGROUND: Numerous studies have reported on the tibiofemoral articular cartilage contact kinematics, however, no data has been reported on the articular cartilage geometry at the contact area. This study investigated the in-vivo tibiofemoral articular cartilage contact biomechanics during a dynamic step-up motion. METHODS: Ten healthy subjects were imaged using a validated magnetic resonance and dual fluoroscopic imaging technique during a step-up motion. Three-dimensional bone and cartilage models were constructed from the magnetic resonance images...
September 8, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28910133/a-comparison-of-2-year-outcomes-in-patients-undergoing-tibiofemoral-or-patellofemoral-matrix-induced-autologous-chondrocyte-implantation
#12
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/28906396/chondrosarcoma-of-the-patella-a-case-report
#13
Conglin Ye, Zhiping Luo, Jin Zeng, Min Dai
RATIONALE: Chondrosarcoma, characterized by the production of cartilage matrix, is a common bone tumor, accounting for 20% to 27% of all malignant bone tumors. It often occurs in the cartilage of the pelvis, femur, tibia, and humerus. However, chondrosarcoma of the patella is extremely rare. PATIENT CONCERNS: The present study describes a case of chondrosarcoma affecting the right patella in a 68-year-old woman. The chief complaints were painful swelling and limitation of motion of the right knee for about half a year...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28906125/imaging-of-rare-appendicular-non-acral-soft-tissue-chondromas-in-adults-with-histopathologic-correlation
#14
Mohamed Ragab Nouh, Hanan Abd El-Aziz Amr, Rola H Ali
Background Soft-tissue chondroma (STC) is a rare benign soft tissue tumor that arises primarily in acral extra-skeletal locations. Occasionally, STCs may arise in more proximal non-acral locations, accompanied by non-classic features that label them as indeterminate lesions and pose diagnostic challenge for both radiologists and pathologists alike. Purpose To explicate the potential of diagnostic imaging in the identification and characterization of appendicular non-acral STCs with emphasis on their morphologic magnetic resonance imaging (MRI) enhancement...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28903010/effect-of-loading-on-in-vivo-tibiofemoral-and-patellofemoral-kinematics-of-healthy-and-acl-reconstructed-knees
#15
Jarred M Kaiser, Michael F Vignos, Richard Kijowski, Geoffrey Baer, Darryl G Thelen
BACKGROUND: Although knees that have undergone anterior cruciate ligament reconstruction (ACLR) often exhibit normal laxity on clinical examination, abnormal kinematic patterns have been observed when the joint is dynamically loaded during whole body activity. This study investigated whether abnormal knee kinematics arise with loading under isolated dynamic movements. HYPOTHESIS: Tibiofemoral and patellofemoral kinematics of ACLR knees will be similar to those of the contralateral uninjured control knee during passive flexion-extension, with bilateral differences emerging when an inertial load is applied...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28899563/treating-osteomyelitis-of-major-limb-amputations-with-a-modified-lautenbach-technique
#16
Juliet M Clutton, Oliver Donaldson, Anthony Perera, Rhidian Morgan-Jones
INTRODUCTION: Major lower limb amputation significantly increases the energy cost of walking for patients. Complications such as osteomyelitis may require further surgery, and can lead to shortening of the stump. In these cases, the aim should be to treat infection without shortening the limb further. We present a series of patients with established osteomyelitis of the amputation stump, managed using a modified Lautenbach technique. METHOD: Six patients with either above or below knee amputations, in the practice of a single orthopaedic surgeon, were studied...
September 1, 2017: Injury
https://www.readbyqxmd.com/read/28899407/association-of-medial-meniscal-extrusion-with-medial-tibial-osteophyte-distance-detected-by-t2-mapping-mri-in-patients-with-early-stage-knee-osteoarthritis
#17
Shinnosuke Hada, Muneaki Ishijima, Haruka Kaneko, Mayuko Kinoshita, Lizu Liu, Ryo Sadatsuki, Ippei Futami, Anwajan Yusup, Tomohiro Takamura, Hitoshi Arita, Jun Shiozawa, Takako Aoki, Yuji Takazawa, Hiroshi Ikeda, Shigeki Aoki, Hisashi Kurosawa, Yasunori Okada, Kazuo Kaneko
BACKGROUND: Medial meniscal extrusion (MME) is associated with progression of medial knee osteoarthritis (OA), but no or little information is available for relationships between MME and osteophytes, which are found in cartilage and bone parts. Because of the limitation in detectability of the cartilage part of osteophytes by radiography or conventional magnetic resonance imaging (MRI), the rate of development and size of osteophytes appear to have been underestimated. Because T2 mapping MRI may enable us to evaluate the cartilage part of osteophytes, we aimed to examine the association between MME and OA-related changes, including osteophytes, by using conventional and T2 mapping MRI...
September 12, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28899386/improved-clinical-outcome-measures-of-knee-pain-and-function-with-concurrent-resolution-of-subchondral-bone-marrow-edema-lesion-and-joint-effusion-in-an-osteoarthritic-patient-following-pentosan-polysulphate-sodium-treatment-a-case-report
#18
Matthew J Sampson, Margie Kabbani, Ravi Krishnan, Michael Nganga, Annika Theodoulou, Jeganath Krishnan
BACKGROUND: At present, there are no registered products for the treatment of subchondral Bone Marrow Edema Lesion (BML) and associated knee pain. Patients who do not respond to current anti-inflammatory therapies are left with limited treatment options, and may resort to operative management with Total Knee Arthroplasty (TKA). We report the use of Pentosan Polysulphate Sodium (PPS) for the treatment of BMLs of the knee. CASE PRESENTATION: We report the case of a 70-year-old female with knee osteoarthritis presenting with a high level of knee pain, scoring 8 on the Numerical Rating Scale (NRS), and functional limitation demonstrating a poor Lysholm Knee Score of 37...
September 12, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28898318/-chronic-recurrent-multifocal-osteomyelitis-in-a-pediatric-patient-a-case-report
#19
Catalina Mesa Muñoz, Sara Elena Cardona Correa, Carlos Garcés Samudio, Jaime Toro Uribe
INTRODUCTION: Chronic recurrent multifocal osteomyelitis (CRMO) is a very rare disease, of unknown origin that affects primarily the metaphysis of long bones. It is characterized by an insidious onset of symptoms and multiple remissions. The chronicity of symptoms, the diagnostic imaging and the lack of response to first line antibiotic treatment, should be helpful for diagnostic. OBJECTIVE: Present a clinical case, based on clinical, laboratory, radiologic imaging and histopathological results, that ultimately led to the diagnostic of CRMO...
2017: Revista Chilena de Pediatría
https://www.readbyqxmd.com/read/28898105/gait-characteristics-associated-with-a-greater-increase-in-medial-knee-cartilage-t1%C3%AF-and-t2-relaxation-times-in-patients-undergoing-anterior-cruciate-ligament-reconstruction
#20
Hsiang-Ling Teng, Daniel Wu, Favian Su, Valentina Pedoia, Richard B Souza, C Benjamin Ma, Xiaojuan Li
BACKGROUND: Osteoarthritis of the medial tibiofemoral joint (MTFJ) is prevalent among patients undergoing anterior cruciate ligament reconstruction (ACLR). Magnetic resonance T1ρ and T2 relaxation times provide noninvasive methods to quantify early cartilage degeneration. Altered sagittal-plane gait biomechanics have been observed after ACLR, but their associations with longitudinal changes in MTFJ cartilage T1ρ and T2 remain unclear. Hypothesis/Purpose: To examine whether the peak knee flexion moment (KFM), knee flexion angle (KFA), and vertical ground-reaction force (vGRF) during gait are associated with prospective changes in medial tibiofemoral cartilage T1ρ and T2 in ACL-reconstructed knees and to compare these gait characteristics between patients undergoing ACLR and healthy control participants...
September 1, 2017: American Journal of Sports Medicine
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