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https://www.readbyqxmd.com/read/29140170/clinical-diagnostic-tests-versus-mri-diagnosis-of-acl-tears
#1
Megan P Brady, Windee Weiss
CLINICAL SCENARIO: A common injury among elite, recreational, and youth athletes is the anterior cruciate ligament (ACL) tear.(1) Approximately 200,000 ACL injuries occur every year.(2) The gold standard in ACL injury evaluation is diagnostic arthroscopy,(3,4) however the diagnostic accuracy of clinical diagnostic tests and magnetic resonance imaging (MRI) is debatable.(1,3-6) Due to the frequency of knee injury,(3) MRI is a common diagnostic tool used for imaging and diagnosis(5). ACL tears are also diagnosed using clinical diagnostic tests...
November 15, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29137565/mri-evaluation-of-the-acl-remnant-tissue-in-acl-deficient-knee
#2
Tsuneari Takahashi, Masashi Kimura, Katsushi Takeshita
PURPOSE: To clarify the relationship between anterior cruciate ligament (ACL) remnant tissue at the time of surgery and preoperative evaluation of ACL-injured knee. METHODS: A total of 123 patients were enrolled and classified into four groups based on the classification of ACL remnant tissue. To quantify the signal-noise quotient (SNQ), five regions of interest (ROIs), such as tibial, mid, femoral ACL remnant, tendon of quadriceps femoris to normalize the signal intensity of ACL remnant tissue, and background measurements, were measured...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29136015/the-influences-of-walking-running-and-stair-activity-on-knee-articular-cartilage-quantitative-mri-using-t1-rho-and-t2-mapping
#3
Meng Chen, Lin Qiu, Si Shen, Fei Wang, Jing Zhang, Cici Zhang, Sirun Liu
OBJECTIVE: To explore the different influences of walking, running and stair activity on knee articular cartilage with T1 rho and T2 mapping sequences. MATERIALS AND METHODS: MRI (3.0-T) scans of the right knee were performed in twenty-three young healthy adults immediately after 30 minutes of rest, walking, running and stair activity respectively. Articular cartilage was quantitatively assessed based on T1 rho and T2 relaxation times. Analysis of variance for random block design data, bonferroni test and paired samples t tests were performed to estimate the different influences of physiological activities on articular cartilage...
2017: PloS One
https://www.readbyqxmd.com/read/29126545/mri-ankle-and-subtalar-characteristics-in-haemochromatosis-arthropathy-a-case-control%C3%A2-study
#4
A Elstob, V Ejindu, C W Heron, P D W Kiely
AIM: To examine the magnetic resonance imaging (MRI) features of the ankle and subtalar joints that might distinguish genetic haemochromatosis (GH). MATERIALS AND METHODS: The present study was a retrospective case-control study comparing 30 MRI studies of GH patients with ankle or subtalar arthropathy with 30 matched controls with ankle pain. Anonymised images were scored using a semi-quantative tool adapted from the MRI osteoarthritis knee score. Scores were generated for bone marrow lesions size, number, and distinguishing the proportion of each lesion consisting of subchondral cyst versus oedema...
November 7, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/29125920/frontal-plane-knee-mechanics-and-early-cartilage-degeneration-in-people-with-anterior-cruciate-ligament-reconstruction-a-longitudinal-study
#5
Deepak Kumar, Favian Su, Daniel Wu, Valentina Pedoia, Lauren Heitkamp, C Benjamin Ma, Richard B Souza, Xiaojuan Li
BACKGROUND: Abnormal frontal plane gait mechanics are known risk factors for knee osteoarthritis, but their role in early cartilage degeneration after anterior cruciate ligament reconstruction (ACLR) is not well understood. Hypothesis/Purpose: The objective was to evaluate the association of frontal plane gait mechanics with medial knee cartilage magnetic resonance (MR) relaxation times over 1 year in patients with ACLR and controls. It was hypothesized that (1) there will be an increase in frontal plane medial knee loading and medial knee MR relaxation times over time in the patients with ACLR, and (2) increases in frontal plane medial knee loading will be associated with an increase in medial knee MR relaxation times...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29125074/-a-soccer-player-with-an-unstable-knee
#6
D Janssen, B Koc, E Jansen
A 19-year-old soccer player presented with instability of his left knee after a rotation trauma. Congenital absence of the anterior cruciate ligament was suspected because of leg length discrepancy and specific MRI findings. He regained stability after an anterior cruciate reconstruction.
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29125013/diagnostic-value-of-combined-serum-marker-changes-and-quantitative-mri-evaluation-of-cartilage-volume-of-tibial-plateau-in-a-surgically-induced-osteoarthritis-dog-model
#7
Jiangdong Ren, Jinsai Ma, Xiaogang Zhang, Abdusami Aimaiti, Maimaitiming Saiyiti, Yuming Chen, Li Cao
Objective To evaluate the combined diagnostic value of two serum osteoarthritis (OA) markers and quantitative magnetic resonance imaging (MRI) evaluation of the cartilage volume of the tibial plateau in a canine model of experimental OA. Methods A total of 18 male Beagle dogs were used in this longitudinal study. OA was surgically induced via anterior cruciate ligament transection (ACLT) of the right knee in 10 dogs. The remaining eight dogs formed the sham operation control group and underwent the same procedure without ACLT...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/29124364/sagittal-magnetic-resonance-imaging-scan-orientation-significantly-influences-accuracy-of-femoral-posterior-condylar-offset-measurement
#8
Peter Balcarek, Ali Seif Amir Hosseini, Ulrike Streit, Tobias Franz Brodkorb, Tim Alexander Walde
BACKGROUND: In total knee arthroplasty the femoral posterior condylar offset (PCO) may serve as a potential branch for correct femoral component positioning. The technique of adjusting the sagittal magnetic resonance imaging (MRI)-scan on which it is measured has not been investigated in previous literature, but may be subject to variances due to knee joint positioning or axial localizer scan angulation. The purpose of this study was to investigate the effect of simulated femur rotation on the accuracy of PCO measurement...
November 10, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29124077/can-a-clinical-examination-demonstrate-intramuscular-tendon-involvement-in-acute-hamstring-injuries
#9
Michel D Crema, Ali Guermazi, Gustaaf Reurink, Frank W Roemer, Mario Maas, Adam Weir, Maarten H Moen, Gert J Goudswaard, Johannes L Tol
Background: Involvement of the intramuscular (central) tendon in acute hamstring injuries, as detected on magnetic resonance imaging (MRI), may prolong recovery times. To date, it is unclear whether hamstring injuries exhibiting intramuscular tendon involvement can be identified though routine clinical examinations that assess flexibility and strength. Purpose: To test whether MRI-detected intramuscular tendon involvement could be identified by a clinical assessment of muscle strength and flexibility...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29121248/fusion-of-positron-emission-tomography-computed-tomography-with-magnetic-resonance-imaging-reveals-hamstring-peritendonitis-in-polymyalgia-rheumatica
#10
Claire E Owen, Aurora M T Poon, Sze Ting Lee, Lee Pheng Yap, Richard B Zwar, Christine M McMenamin, Simon K L Lam, David F L Liew, Kunthi Pathmaraj, Andrew Kemp, Andrew M Scott, Russell R C Buchanan
Objectives: To characterize 18F-fluorodeoxyglucose (18F-FDG) uptake on whole-body PET/CT in PMR, and identify its precise anatomic correlate using MRI. Methods: Patients with newly diagnosed PMR according to the 2012 EULAR/ACR classification criteria were prospectively recruited. Participants with GCA were excluded. A whole-body 18F-FDG PET/CT scan was performed in all untreated patients. Qualitative and semiquantitative [standardized uptake value maximum (SUVmax)] scoring of abnormal 18F-FDG uptake was undertaken...
November 7, 2017: Rheumatology
https://www.readbyqxmd.com/read/29119285/lateral-femoral-notch-depth-is-not-associated-with-increased-rotatory-instability-in-acl-injured-knees-a-quantitative-pivot-shift-analysis
#11
Ajay C Kanakamedala, Jeremy M Burnham, Thomas R Pfeiffer, Elmar Herbst, Marcin Kowalczuk, Adam Popchak, James Irrgang, Freddie H Fu, Volker Musahl
PURPOSE: A deep lateral femoral notch (LFN) on lateral radiographs is indicative of ACL injury. Prior studies have suggested that a deep LFN may also be a sign of persistent rotatory instability and a concomitant lateral meniscus tear. Therefore, the purpose of this study was to evaluate the relationship between LFN depth and both quantitative measures of rotatory knee instability and the incidence of lateral meniscus tears. It was hypothesized that greater LFN depth would be correlated with increased rotatory instability, quantified by lateral compartment translation and tibial acceleration during a quantitative pivot shift test, and incidence of lateral meniscus tears...
November 8, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29115689/learning-a-variational-network-for-reconstruction-of-accelerated-mri-data
#12
Kerstin Hammernik, Teresa Klatzer, Erich Kobler, Michael P Recht, Daniel K Sodickson, Thomas Pock, Florian Knoll
PURPOSE: To allow fast and high-quality reconstruction of clinical accelerated multi-coil MR data by learning a variational network that combines the mathematical structure of variational models with deep learning. THEORY AND METHODS: Generalized compressed sensing reconstruction formulated as a variational model is embedded in an unrolled gradient descent scheme. All parameters of this formulation, including the prior model defined by filter kernels and activation functions as well as the data term weights, are learned during an offline training procedure...
November 8, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29114633/surgical-management-of-degenerative-meniscus-lesions-the-2016-esska-meniscus-consensus
#13
P Beaufils, R Becker, S Kopf, M Englund, R Verdonk, M Ollivier, R Seil
Purpose  A degenerative meniscus lesion is a slowly developing process typically involving a horizontal cleavage in a middle-aged or older person. When the knee is symptomatic, arthroscopic partial meniscectomy has been practised for a long time with many case series reporting improved patient outcomes. Since 2002, several randomised clinical trials demonstrated no additional benefit of arthroscopic partial meniscectomy compared to non-operative treatment, sham surgery or sham arthroscopic partial meniscectomy...
June 2017: Joints
https://www.readbyqxmd.com/read/29114629/knee-osteoarthritis-after-reconstruction-of-isolated-anterior-cruciate-ligament-injuries-a-systematic-literature-review
#14
REVIEW
Compagnoni Riccardo, Catani Fabio, Randelli Pietro
Purpose  The aim of this review was to analyze the current literature on osteoarthritic evolution of knees without any combined meniscal or ligament lesions undergoing anterior cruciate ligament (ACL) reconstruction. Methods  A PubMed/MEDLINE research was performed using the following keywords: "Anterior Cruciate Ligament Reconstruction" [Mesh] AND "Osteoarthritis, Knee" [Mesh]. Only English language literature and articles published after 2005 were included. Studies including concomitant meniscal tears, posterior cruciate or collateral ligament injuries, previous surgery in the affected knees, infections, osteochondral defects, loose bodies, synovial plica syndrome, and posteromedial or posterolateral corner injuries were not considered in this review...
March 2017: Joints
https://www.readbyqxmd.com/read/29113159/treatment-of-osteosarcoma-around-the-knee-in-skeletally-immature-patients
#15
Weitao Yao, Qiqing Cai, Jiaqiang Wang, Songtao Gao
Limb sparing surgery in growing young patients with malignant tumors is difficult as invasion of the physis by the tumor or surgical resection through the metaphysis may cause significant limb discrepancy following surgery. At present, hinged tumor prosthesis or biological reconstructions are the main methods following tumor resection in these patients. The aim of the present study was to assess different procedures for the treatment of osteosarcoma around knee joints in immature patients. A retrospective study of 56 patients (<15 years old, open physis) who had been treated for osteosarcoma around the knee joint between January 2007 and December 2015 was performed...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29112467/meniscectomy-and-resultant-articular-cartilage-lesions-of-the-knee-among-prospective-national-football-league-players-an-imaging-and-performance-analysis
#16
Jorge Chahla, Mark E Cinque, Jonathan A Godin, George Sanchez, George F Lebus, James M Whalen, Mark D Price, Nicholas I Kennedy, Gilbert Moatshe, Robert F LaPrade, Matthew T Provencher
BACKGROUND: The effect of prior meniscectomy and the resulting reduction in meniscal tissue on a potential National Football League (NFL) player's articular cartilage status and performance remain poorly elucidated. Purpose/Hypothesis: (1) To determine the epidemiology, imaging characteristics, and associated articular cartilage pathology of the knee among players with a previous meniscectomy who were participating in the NFL Combine and (2) to evaluate the effect of these injuries on performance as compared with matched controls...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29111463/diagnostic-validity-of-combining-history-elements-and-physical-examination-tests-for-traumatic-and-degenerative-symptomatic-meniscal-tears
#17
Simon Décary, Michel Fallaha, Pierre Frémont, Johanne Martel-Pelletier, Jean-Pierre Pelletier, Debbie Feldman, Marie-Pierre Sylvestre, Pascal-André Vendittoli, François Desmeules
BACKGROUND: Current approach to the clinical diagnosis of traumatic and degenerative symptomatic meniscal tears (SMT) propose combining history elements and physical examination tests without systematic prescription of imaging investigations, yet the evidence to support this diagnostic approach is scarce. OBJECTIVE: To assess the validity of diagnostic clusters combining history elements and physical examination tests to diagnose or exclude traumatic and degenerative SMT compared to other knee disorders...
October 27, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29110690/autologous-cell-derived-tissue-engineered-cartilage-for-repairing-articular-cartilage-lesions-in-the-knee-study-protocol-for-a-randomized-controlled-trial
#18
Ning Ma, Hongxia Wang, Xian Xu, Yiqun Wan, Yufeng Liu, Mingjie Wang, Wen Yu, Yongjing Dai, Jiang Peng, Quanyi Guo, Changlong Yu, Shibi Lu
BACKGROUND: Spontaneous recovery from articular cartilage injury is difficult, and the ongoing progression of disease can eventually lead to osteoarthritis. Currently, there is no effective non-surgical treatment for articular cartilage injury. Arthroscopic debridement and microfracture surgery are performed for fibrocartilage repair. But fibrocartilage is different from normal articular cartilage, and functional recovery is not satisfactory. Therefore, it is necessary to develop more effective techniques for articular cartilage repair...
November 6, 2017: Trials
https://www.readbyqxmd.com/read/29110109/can-we-have-an-overall-osteoarthritis-severity-score-for-the-patellofemoral-joint-using-magnetic-resonance-imaging-reliability-and-validity
#19
Sarah Kobayashi, Anthony Peduto, Milena Simic, Marlene Fransen, Kathryn Refshauge, Jean Mah, Evangelos Pappas
This work aimed to assess inter-rater reliability and agreement of a magnetic resonance imaging (MRI)-based Kellgren and Lawrence (K&L) grading for patellofemoral joint osteoarthritis (OA) and to validate it against the MRI Osteoarthritis Knee Score (MOAKS). MRI scans from people aged 45 to 75 years with chronic knee pain participating in a randomised clinical trial evaluating dietary supplements were utilised. Fifty participants were randomly selected and scored using the MRI-based K&L grading using axial and sagittal MRI scans...
November 6, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/29107041/lateral-corticospinal-tract-damage-correlates-with-motor-output-in-incomplete-spinal-cord-injury
#20
Andrew C Smith, Kenneth A Weber, Denise R O'Dell, Todd B Parrish, Marie Wasielewski, James M Elliott
OBJECTIVE: To investigate the relationship between spinal cord damage and specific motor function in participants with incomplete spinal cord injury (iSCI). DESIGN: single-blinded cross-sectional study design SETTING: University setting research laboratory. PARTICIPANTS: Fourteen individuals with chronic cervical iSCI (1 female and 13 males, average age = 43 ± 12 years old). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Axial T2 MRI of spinal cord damage was performed in 14 participants with iSCI...
October 26, 2017: Archives of Physical Medicine and Rehabilitation
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