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https://www.readbyqxmd.com/read/29774599/deep-convolutional-neural-network-for-segmentation-of-knee-joint-anatomy
#1
Zhaoye Zhou, Gengyan Zhao, Richard Kijowski, Fang Liu
PURPOSE: To describe and evaluate a new segmentation method using deep convolutional neural network (CNN), 3D fully connected conditional random field (CRF), and 3D simplex deformable modeling to improve the efficiency and accuracy of knee joint tissue segmentation. METHODS: A segmentation pipeline was built by combining a semantic segmentation CNN, 3D fully connected CRF, and 3D simplex deformable modeling. A convolutional encoder-decoder network was designed as the core of the segmentation method to perform high resolution pixel-wise multi-class tissue classification for 12 different joint structures...
May 17, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29772993/shoulder-lesion-in-a-69-year-old-woman
#2
Andrew J Hayden, Srinivas Kolla, Adele L Boskey, Steven Burekhovich, Chuanyong Lu, Michael Stracher, Aditya V Maheshwari
Milwaukee Shoulder Syndrome (MSS) is a painful progressive arthropathy in which hydroxyapatite crystal deposition in synovial tissue induces lysosomal release of collagenase and neutral proteases. These enzymes are destructive to periarticular tissue, including the synovium, articular cartilage, rotator cuff muscles, and the intrasynovial cortical bone. MSS predominantly occurring in women (90%) over the age of 70 years of age with a clinical history marked by recurrent joint effusions and pain, which classically worsens at night...
2018: Journal of Long-term Effects of Medical Implants
https://www.readbyqxmd.com/read/29752650/traumatic-knee-injury-correlation-of-radiographic-effusion-size-with-the-presence-of-internal-derangement-on-magnetic-resonance-imaging
#3
Nathan D Cecava, Shane Dieckman, Kevin P Banks, Liem T Mansfield
PURPOSE: Traumatic knee injury is a common clinical presentation. However, knee internal derangement often goes undiagnosed on physical exam. The authors hypothesize that patients with suprapatellar joint effusion greater than 10 mm anteroposterior diameter on lateral radiograph have a high likelihood of knee internal derangement on magnetic resonance imaging. MATERIALS AND METHODS: A retrospective review of knee radiographs and magnetic resonance imaging in 198 patients age 18-40 years with acute knee injury was performed...
May 8, 2018: Emergency Radiology
https://www.readbyqxmd.com/read/29726627/relationship-between-patient-reported-swelling-and-mri-defined-effusion-synovitis-in-patients-with-meniscus-tears-and-knee-osteoarthritis
#4
Lindsey A MacFarlane, Heidi Yang, Jamie E Collins, Ali Guermazi, Lisa A Mandl, Brue A Levy, Robert G Marx, Clare E Safran-Norton, Elena Losina, Jeffrey N Katz
OBJECTIVE: Synovitis is a prevalent feature in patients with knee osteoarthritis (OA) and meniscal tear and is associated with pain and cartilage damage. Patient-reported swelling is also prevalent in this population. We aimed to investigate the cross-sectional association between patient-reported swelling and effusion-synovitis on magnetic resonance imaging (MRI) in patients with OA and meniscal tear. METHODS: We used baseline data from a multicenter randomized controlled trial, Meniscal Tear in Osteoarthritis Research (MeTeOR)...
May 4, 2018: Arthritis Care & Research
https://www.readbyqxmd.com/read/29713775/tibial-tuberosity-to-trochlear-groove-distance-and-its-association-with-patellofemoral-osteoarthritis-related-structural-damage-worsening-data-from-the-osteoarthritis-initiative
#5
Arya Haj-Mirzaian, Ali Guermazi, Michael Hakky, Christopher Sereni, Bashir Zikria, Frank W Roemer, Miho J Tanaka, Andrew J Cosgarea, Shadpour Demehri
OBJECTIVES: To determine whether the tibial tuberosity-to-trochlear groove (TT-TG) distance is associated with concurrent patellofemoral joint osteoarthritis (OA)-related structural damage and its worsening on 24-month follow-up magnetic resonance imaging (MRI) in participants in the Osteoarthritis Initiative (OAI). METHODS: Six hundred subjects (one index knee per participant) were assessed. To evaluate patellofemoral OA-related structural damage, baseline and 24-month semiquantitative MRI Osteoarthritis Knee Score (MOAKS) variables for cartilage defects, bone marrow lesions (BMLs), osteophytes, effusion, and synovitis were extracted from available readings...
April 30, 2018: European Radiology
https://www.readbyqxmd.com/read/29666092/a-rare-cause-of-oligoarthritis-with-septic-presentation
#6
Patrick Hoversten, Joel Beachey, Michael Pham, Anjali Bhagra
A 33-year-old man presented with new-onset, asymmetric, migratory oligoarthritis in the setting of several weeks of nausea and vomiting, diarrhoea, fevers and dysuria. He was initially treated in the inpatient setting with broad-spectrum antibiotics due to concern for an evolving sepsis presentation. Arthrocentesis of a large right knee effusion revealed inflammatory synovial fluid without findings suggestive of septic arthritis. Human leucocyte antigen B27 was positive and, taken together with the antecedent history of gastroenteritis, dysuria and inflammatory oligoarthritis, the clinical diagnosis was most consistent with reactive arthritis...
April 17, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29653443/the-role-of-clinical-examination-in-predicting-relevant-mri-findings-in-acute-knee-injuries-a-retrospective-study
#7
Daoud Makki, Saleem Mastan, Daniel Ness, Raghuram Thonse
The objective of this study was to delineate the usefulness of clinical examination and magnetic resonance imaging (MRI) in acute knee injuries. We aim to establish whether the time period post acute knee injury is related to the diagnostic accuracy of clinical examination and to investigate the strength of specific clinical examination findings in predicting a clinically relevant MRI abnormality. Seventy patients were referred to fracture clinic with an acute knee injury who subsequently went on to be investigated with MRI over 12 months...
April 13, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29648685/association-of-physical-examination-knee-effusion-with-bone-marrow-lesions-cross-sectional-and-longitudinal-analyses-of-a-population-based-cohort
#8
Jolanda Cibere, Ali Guermazi, Savvas Nicolaou, John M Esdaile, Anona Thorne, Joel Singer, Hubert Wong, Jacek A Kopec, Eric C Sayre
OBJECTIVE: To determine the association of physical examination (PE) effusion with prevalence of bone marrow lesions (BML) on MRI, and incidence/progression of BML over 3 years in knee osteoarthritis (OA). METHODS: A population-based cohort with knee pain (N=255) was assessed for PE effusion. On MRI, BML was graded 0-3 (none, mild, moderate, severe), incidence/progression defined as a worsening in the sum of BML scores over six surfaces by ≥1 grade. We analyzed the full cohort and mild disease subsample with Kellgren-Lawrence (KL) grade <3...
April 12, 2018: Arthritis Care & Research
https://www.readbyqxmd.com/read/29608037/pain-and-structural-alterations-in-knee-joints-in-patients-with-haemophilia
#9
S Krüger, M Hoffmeister, T Hilberg
INTRODUCTION: Patients with haemophilia (PwH) suffer from haemophilic arthropathy which leads to an enhanced pain sensitivity. The aim of this study was to determine whether the individual pain condition in terms of pressure pain thresholds (PPT) at the knee joints is linked to changes of underlying anatomical structures in PwH. MATERIAL AND METHODS: Eleven landmarks at both knee joints of 36 PwH and 36 controls were examined in terms of PPT and ultrasound sonography (US)...
April 2, 2018: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/29607728/pseudogout-a-rare-manifestation-of-hungry-bone-syndrome-after-focused-parathyroidectomy
#10
C H Tai, H B Oh, J E Seet, K Y Ngiam
Pseudogout, also known as calcium pyrophosphate deposition disease, is a rheumatological condition arising from accumulation of calcium pyrophosphate dihydrate crystals in connective tissues. We present a case of a 56-year-old Bangladeshi woman who underwent focused right inferior parathyroidectomy for primary hyperparathyroidism from a right inferior parathyroid adenoma. On the first post-operative day, she complained of left elbow painful swelling with redness and warmth. Arthrocentesis of left elbow was done due to suspicion of septic arthritis...
April 1, 2018: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/29567561/medical-image-analysis-of-knee-joint-lipoma-arborescens-and-arthroscopic-treatment
#11
Guangyu Zhu, Xiangdong Tian, Dongfeng Du, Ming Lei, Lei Guan, Jian Wang, Yetong Tan, Chen Yang, Xinxin Zheng
OBJECTIVE: Arthroscopy is a minimally invasive surgical procedure on a joint in which examination and treatment of knee damage is performed using a surgical device known as the arthroscope. Lipoma arborescens (LA), an infrequent intra-articular lesion, originates from mature adipose cells under subsynovial tissue. The synovial membrane is pale yellow with large villous projections. It is caused by various underlying factors. We found many patients with LA and processed them appropriately...
January 12, 2018: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/29558346/-methods-of-efficacy-assessment-of-the-knee-joint-radiosynoviorthesis-personal-experience
#12
Robert Zwolak, Maria Majdan
OBJECTIVE: Introduction: Radiosynoviorthesis (RS) is local method of treatment of remittent joint effusions among patients who obtained general improvement after disease modifying anti-rheumatic drugs therapy but one or a few joints stay resistant to this treatment and intraarticular corticosteroids injections. The aim: The attempt to identification methods of efficacy assessment of the 90yttrium knee joint RS. PATIENTS AND METHODS: Material and methods: The study group consisted of 43 patients with rheumatoid arthritis (RA) and 19 patients with inflammatory spondyloarthropaties (SPA) where 8 patients were treated for ankylosing spondylitis (AS), 4 for psoriatic arthritis (PsA) and 7 due to undifferentiated inflammatory spondyloarthropaties (USPA)...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29558161/clinical-efficacy-of-jump-training-augmented-with-body-weight-support-after-acl-reconstruction-a-randomized-controlled-trial
#13
Audrey R C Elias, Kari J Harris, Paul C LaStayo, Ryan L Mizner
BACKGROUND: Limited knee flexion and increased muscle co-contraction during jump landing are believed to diminish outcomes after anterior cruciate ligament (ACL) reconstruction. The efficacy of jump training to improve patients' mechanical and neuromuscular deficits is understudied. HYPOTHESIS: Jump training will improve functional, mechanical, and neuromuscular outcomes and higher repetition training augmented by body weight support will result in better retention of gains...
March 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29514715/pachydermoperiostosis-in-a-patient-with-chronic-hepatitis-b-virus-infection-referred-as-acromegaly-a-case-report
#14
Yacoba Atiase, Ernest Yorke, Josephine Akpalu, Bismark Opoku-Asare, Patrick Adjei, Maame Boatemma Amissah-Arthur, Albert Akpalu
BACKGROUND: Primary hypertrophic osteoarthropathy also known as pachydermoperiostosis is a rare genetic disorder that has often been confused with acromegaly because of similar clinical features. Vascular endothelial growth factors which have been implicated in the clinical features of pachydermoperiostosis, have also been shown to be present in chronic hepatitis and implicated in the malignant transformation of hepatitis B infection to hepatocellular carcinoma. To the best of our knowledge there is one reported case of pachydermoperiostosis with chronic hepatitis B infection...
March 8, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29514374/tibial-spine-fractures-in-children-evaluation-management-and-future-directions
#15
Alexander J Adams, Nakul S Talathi, Jigar S Gandhi, Neeraj M Patel, Theodore J Ganley
Fractures of the tibial spine are estimated to occur in 3 per 100,000 children annually, but account for 2 to 5% of pediatric knee injuries with effusion. Although these fractures were historically associated with bicycle accidents, the surge of organized youth sports in recent decades has brought renewed attention to this injury. While minimally displaced fractures can be treated nonoperatively, several techniques have been described for fixation of displaced or comminuted fractures. Sequelae of this injury can include arthrofibrosis, knee instability, and nonunion...
May 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29505515/persistent-fever-and-destructive-arthritis-caused-by-dialysis-related-amyloidosis-a-case-report
#16
Kotaro Matsumoto, Jun Kikuchi, Yuko Kaneko, Hidekata Yasuoka, Kazuko Suzuki, Hirobumi Tokuyama, Kaori Kameyama, Kunihiro Yamaoka, Tsutomu Takeuchi
RATIONALE: Dialysis-related amyloidosis (DRA) can present rheumatic manifestations in patients on long-term hemodialysis. Typical articular symptoms with DRA involve carpal-tunnel syndrome, effusion in large joints, spondyloarthropathy, or cystic bone lesions, which are usually with non-inflammatory processes. PATIENT CONCERNS: A 64-year-old man on hemodialysis for >30 years was admitted because of intermittent fever, polyarthritis, and elevated serum C-reactive protein (CRP) level, which was continuous for 2 years...
January 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29502169/the-popliteus-tendon-provides-a-safe-and-reliable-location-for-all-inside-meniscal-repair-device-placement
#17
Hervé Ouanezar, William G Blakeney, Charles Latrobe, Adnan Saithna, Levi Reina Fernandes, Jean Romain Delaloye, Mathieu Thaunat, Bertrand Sonnery-Cottet
PURPOSE: Repairs of the posterior horn of the lateral meniscus can be technically challenging. In contrast to medial meniscus repairs, the capsule around the posterior segment attachment of the lateral meniscus is quite thin. This study evaluates the clinical results of an arthroscopic all-inside repair technique for unstable, vertical, lateral meniscus tears, using a suture repair placed directly into the popliteus tendon. METHODS: A retrospective analysis of prospectively collected data from the SANTI database was performed...
March 3, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29490683/exploring-determinants-predicting-response-to-intra-articular-hyaluronic-acid-treatment-in-symptomatic-knee-osteoarthritis-9-year-follow-up-data-from-the-osteoarthritis-initiative
#18
Jean-Pierre Pelletier, Jean-Pierre Raynauld, François Abram, Marc Dorais, Philippe Delorme, Johanne Martel-Pelletier
BACKGROUND: The weight of recommendation for intra-articular therapies such as hyaluronic acid injections varies from one set of guidelines to another, and they have not yet reached unanimity with respect to the usefulness of intra-articular hyaluronic acid (IAHA) injections for the symptomatic treatment of knee osteoarthritis (OA). Among the reasons for the controversy is that the current literature provides inconsistent results and conclusions about such treatment. This study aimed at identifying determinants associated with a better response to IAHA treatment in knee OA...
March 1, 2018: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29484250/patellofemoral-chondral-defect-in-a-preadolescent-skier-a-case-report-in-early-sport-specialization
#19
Nicholas N DePhillipo, Mark E Cinque, Nicholas I Kennedy, Jorge Chahla, Gilbert Moatshe, Robert F LaPrade
Background and Purpose: Early sport specialization (ESS) refers to intense training year round in a specific sport starting at a young age with no or limited participation in other sports. This approach to training is highly controversial; recent literature suggests that this type of specialized training could be a contributing source to overuse injuries in youth athletes. The purpose of this case report was to describe a patellofemoral articular cartilage defect of the knee in a preadolescent skier due to overuse and repetitive microtrauma as a result of ESS...
February 2018: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29438603/from-early-radiographic-knee-osteoarthritis-to-joint-arthroplasty-determinants-of-structural-progression-and-symptoms
#20
Frank W Roemer, C Kent Kwoh, Tomoko Fujii, Michael J Hannon, Robert M Boudreau, David J Hunter, Felix Eckstein, Markus R John, Ali Guermazi
OBJECTIVE: Aims were to assess (1) structural progression in knees with no/mild radiographic osteoarthritis (ROA) (i.e. Kellgren-Lawrence (K-L) grades 0 to 2) that will undergo knee replacement (KR) during a 5-year period; (2) differences in structural damage on MRI between knees with no/mild ROA vs. those with severe ROA (i.e. K-L 3 and 4) at baseline; and (3) differences in pain levels between those groups. METHODS: All participants who underwent KR from baseline (BL) to 60 months were drawn from the Osteoarthritis Initiative...
February 13, 2018: Arthritis Care & Research
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