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Timkovich AE, Sikes KJ, Andrie KM, Afzali MF, Sanford J, Fernandez K, Burnett DJ, Hurley E, Daniel T, Serkova NJ, Donahue TH, Santangelo KS. Full and Partial Mid-substance ACL Rupture Using Mechanical Tibial Displacement in Male and Female Mice. Ann Biomed Eng 2023; 51:579-593. [PMID: 36070048 DOI: 10.1007/s10439-022-03065-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 08/25/2022] [Indexed: 11/30/2022]
Abstract
The anterior cruciate ligament (ACL) is the most commonly injured knee ligament. Surgical reconstruction is the gold standard treatment for ACL ruptures, but 20-50% of patients develop post-traumatic osteoarthritis (PTOA). ACL rupture is thus a well-recognized etiology of PTOA; however, little is known about the initial relationship between ligamentous injury and subsequent PTOA. The goals of this project were to: (1) develop both partial and full models of mid-substance ACL rupture in male and female mice using non-invasive mechanical methods by means of tibial displacement; and (2) to characterize early PTOA changes in the full ACL rupture model. A custom material testing system was utilized to induce either partial or full ACL rupture by means of tibial displacement at 1.6 or 2.0 mm, respectively. Mice were euthanized either (i) immediately post-injury to determine rupture success rates or (ii) 14 days post-injury to evaluate early PTOA progression following full ACL rupture. Our models demonstrated high efficacy in inciting either full or partial ACL rupture in male and female mice within the mid-substance of the ACL. These tools can be utilized for preclinical testing of potential therapeutics and to further our understanding of PTOA following ACL rupture.
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Affiliation(s)
- Ariel E Timkovich
- Department of Microbiology, Immunology, and Pathology, Colorado State University, 1682 Campus Delivery, Fort Collins, CO, 80523-1621, USA
| | - Katie J Sikes
- Department of Clinical Sciences, Colorado State University, Fort Collins, CO, 80523, USA
| | - Kendra M Andrie
- Department of Microbiology, Immunology, and Pathology, Colorado State University, 1682 Campus Delivery, Fort Collins, CO, 80523-1621, USA
| | - Maryam F Afzali
- Department of Microbiology, Immunology, and Pathology, Colorado State University, 1682 Campus Delivery, Fort Collins, CO, 80523-1621, USA
| | - Joseph Sanford
- Department of Microbiology, Immunology, and Pathology, Colorado State University, 1682 Campus Delivery, Fort Collins, CO, 80523-1621, USA
| | - Kimberli Fernandez
- Department of Clinical Sciences, Colorado State University, Fort Collins, CO, 80523, USA
| | - David Joseph Burnett
- Department of Clinical Sciences, Colorado State University, Fort Collins, CO, 80523, USA
| | - Emma Hurley
- Department of Clinical Sciences, Colorado State University, Fort Collins, CO, 80523, USA
| | - Tyler Daniel
- Department of Microbiology, Immunology, and Pathology, Colorado State University, 1682 Campus Delivery, Fort Collins, CO, 80523-1621, USA
| | - Natalie J Serkova
- Department of Radiology, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | | | - Kelly S Santangelo
- Department of Microbiology, Immunology, and Pathology, Colorado State University, 1682 Campus Delivery, Fort Collins, CO, 80523-1621, USA.
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2
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Shen P, Löhning M. Insights into osteoarthritis development from single-cell RNA sequencing of subchondral bone. RMD Open 2022; 8:rmdopen-2022-002617. [PMID: 36598005 PMCID: PMC9748989 DOI: 10.1136/rmdopen-2022-002617] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 11/02/2022] [Indexed: 12/15/2022] Open
Affiliation(s)
- Ping Shen
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center (DRFZ), a Leibniz Institute, Berlin, Germany,Department of Rheumatology and Clinical Immunology, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany,Stem Cell and Biotherapy Engineering Research Center of Henan Province, College of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, China
| | - Max Löhning
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center (DRFZ), a Leibniz Institute, Berlin, Germany,Department of Rheumatology and Clinical Immunology, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
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Bonakdari H, Pelletier JP, Abram F, Martel-Pelletier J. A Machine Learning Model to Predict Knee Osteoarthritis Cartilage Volume Changes over Time Using Baseline Bone Curvature. Biomedicines 2022; 10:biomedicines10061247. [PMID: 35740270 PMCID: PMC9220338 DOI: 10.3390/biomedicines10061247] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/12/2022] [Accepted: 05/19/2022] [Indexed: 01/27/2023] Open
Abstract
The hallmark of osteoarthritis (OA), the most prevalent musculoskeletal disease, is the loss of cartilage. By using machine learning (ML), we aimed to assess if baseline knee bone curvature (BC) could predict cartilage volume loss (CVL) at one year, and to develop a gender-based model. BC and cartilage volume were assessed on 1246 participants using magnetic resonance imaging. Variables included age, body mass index, and baseline values of eight BC regions. The outcome consisted of CVL at one year in 12 regions. Five ML methods were evaluated. Validation demonstrated very good accuracy for both genders (R ≥ 0.78), except the medial tibial plateau for the woman. In conclusion, we demonstrated, for the first time, that knee CVL at one year could be predicted using five baseline BC region values. This would benefit patients at risk of structural progressive knee OA.
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Affiliation(s)
- Hossein Bonakdari
- Osteoarthritis Research Unit, University of Montreal Hospital Research Centre (CRCHUM), Montreal, QC H2X 0A9, Canada; (H.B.); (J.-P.P.)
| | - Jean-Pierre Pelletier
- Osteoarthritis Research Unit, University of Montreal Hospital Research Centre (CRCHUM), Montreal, QC H2X 0A9, Canada; (H.B.); (J.-P.P.)
| | - François Abram
- Medical Imaging Consultant, ArthroLab Inc., Montreal, QC H2X 0A9, Canada;
| | - Johanne Martel-Pelletier
- Osteoarthritis Research Unit, University of Montreal Hospital Research Centre (CRCHUM), Montreal, QC H2X 0A9, Canada; (H.B.); (J.-P.P.)
- Correspondence: ; Tel.: +1-514-890-8000 (ext. 27281); Fax: +1-514-412-7582
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4
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Watkins L, MacKay J, Haddock B, Mazzoli V, Uhlrich S, Gold G, Kogan F. Assessment of quantitative [ 18F]Sodium fluoride PET measures of knee subchondral bone perfusion and mineralization in osteoarthritic and healthy subjects. Osteoarthritis Cartilage 2021; 29:849-858. [PMID: 33639259 PMCID: PMC8159876 DOI: 10.1016/j.joca.2021.02.563] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 01/06/2021] [Accepted: 02/01/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Molecular information derived from dynamic [18F]sodium fluoride ([18F]NaF) PET imaging holds promise as a quantitative marker of bone metabolism. The objective of this work was to evaluate physiological mechanisms of [18F]NaF uptake in subchondral bone of individuals with and without knee osteoarthritis (OA). METHODS Eleven healthy volunteers and twenty OA subjects were included. Both knees of all subjects were scanned simultaneously using a 3T hybrid PET/MRI system. MRI MOAKS assessment was performed to score the presence and size of osteophytes, bone marrow lesions, and cartilage lesions. Subchondral bone kinetic parameters of bone perfusion (K1), tracer extraction fraction, and total tracer uptake into bone (Ki) were evaluated using the Hawkins 3-compartment model. Measures were compared between structurally normal-appearing bone regions and those with structural findings. RESULTS Mean and maximum SUV and kinetic parameters Ki, K1, and extraction fraction were significantly different between Healthy subjects and subjects with OA. Between-group differences in metabolic parameters were observed both in regions where the OA group had degenerative changes as well as in regions that appeared structurally normal. CONCLUSIONS Results suggest that bone metabolism is altered in OA subjects, including bone regions with and without structural findings, compared to healthy subjects. Kinetic parameters of [18F]NaF uptake in subchondral bone show potential to quantitatively evaluate the role of bone physiology in OA initiation and progression. Objective measures of bone metabolism from [18F]NaF PET imaging can complement assessments of structural abnormalities observed on MRI.
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Affiliation(s)
- L Watkins
- Department of Bioengineering, Stanford University, Stanford CA, USA; Department of Radiology, Stanford University, Stanford CA, USA.
| | - J MacKay
- Norwich Medical School, University of East Anglia, Norwich, United Kingdom; Department of Radiology, University of Cambridge, Cambridge, United Kingdom
| | | | - V Mazzoli
- Department of Radiology, Stanford University, Stanford CA, USA
| | - S Uhlrich
- Department of Mechanical Engineering, Stanford University, Stanford CA, USA
| | - G Gold
- Department of Bioengineering, Stanford University, Stanford CA, USA; Department of Radiology, Stanford University, Stanford CA, USA
| | - F Kogan
- Department of Radiology, Stanford University, Stanford CA, USA
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5
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Chang GH, Park LK, Le NA, Jhun RS, Surendran T, Lai J, Seo H, Promchotichai N, Yoon G, Scalera J, Capellini TD, Felson DT, Kolachalama VB. Subchondral bone length in knee osteoarthritis: A deep learning derived imaging measure and its association with radiographic and clinical outcomes. Arthritis Rheumatol 2021; 73:2240-2248. [PMID: 33973737 DOI: 10.1002/art.41808] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 05/06/2021] [Indexed: 11/10/2022]
Abstract
OBJECTIVE Develop a bone shape measure that reflects the extent of cartilage loss and bone flattening in knee osteoarthritis (OA) and test it against estimates of disease severity. METHODS A fast region-based convolutional neural network was trained to crop the knee joints in sagittal dual-echo steady state MRI sequences obtained from the Osteoarthritis Initiative (OAI). Publicly available annotations of the cartilage and menisci were used as references to annotate the tibia and the femur in 61 knees. Another deep neural network (U-Net) was developed to learn these annotations. Model predictions were compared with radiologist-driven annotations on an independent test set (27 knees). The U-Net was applied to automatically extract the knee joint structures on the larger OAI dataset (9,434 knees). We defined subchondral bone length (SBL), a novel shape measure characterizing the extent of overlying cartilage and bone flattening, and examined its relationship with radiographic joint space narrowing (JSN), concurrent WOMAC pain and disability as well as subsequent partial or total knee replacement (KR). Odds ratios for each outcome were estimated using relative changes in SBL on the OAI dataset into quartiles. RESULT Mean SBL values for knees with JSN were consistently different from knees without JSN. Greater changes of SBL from baseline were associated with greater pain and disability. For knees with medial or lateral JSN, the odds ratios between lowest and highest quartiles corresponding to SBL changes for future KR were 5.68 (95% CI:[3.90,8.27]) and 7.19 (95% CI:[3.71,13.95]), respectively. CONCLUSION SBL quantified OA status based on JSN severity. It has promise as an imaging marker in predicting clinical and structural OA outcomes.
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Affiliation(s)
- Gary H Chang
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA, 02118
| | - Lisa K Park
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA, 02118
| | - Nina A Le
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA, 02118
| | - Ray S Jhun
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA, 02118
| | - Tejus Surendran
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA, 02118
| | - Joseph Lai
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA, 02118
| | - Hojoon Seo
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA, 02118
| | - Nuwapa Promchotichai
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA, 02118
| | - Grace Yoon
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA, 02118
| | - Jonathan Scalera
- Department of Radiology, Boston University School of Medicine, Boston, MA, USA, 02118
| | - Terence D Capellini
- Department of Human Evolutionary Biology, Harvard University, Cambridge, MA, USA, 02138.,Broad Institute of MIT and Harvard, Cambridge, MA, USA, 02142
| | - David T Felson
- Section of Rheumatology, Department of Medicine, Boston University School of Medicine, Boston, MA, USA - 02118; Centre for Epidemiology, University of Manchester and the NIHR Manchester BRC, Manchester University, NHS Trust, Manchester, UK
| | - Vijaya B Kolachalama
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA, 02118.,Department of Computer Science, Faculty of Computing & Data Sciences, Boston University, Boston, MA, USA, 02215
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6
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Nguyen HH, Saarakkala S, Blaschko MB, Tiulpin A. Semixup: In- and Out-of-Manifold Regularization for Deep Semi-Supervised Knee Osteoarthritis Severity Grading From Plain Radiographs. IEEE TRANSACTIONS ON MEDICAL IMAGING 2020; 39:4346-4356. [PMID: 32804644 DOI: 10.1109/tmi.2020.3017007] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Knee osteoarthritis (OA) is one of the highest disability factors in the world. This musculoskeletal disorder is assessed from clinical symptoms, and typically confirmed via radiographic assessment. This visual assessment done by a radiologist requires experience, and suffers from moderate to high inter-observer variability. The recent literature has shown that deep learning methods can reliably perform the OA severity assessment according to the gold standard Kellgren-Lawrence (KL) grading system. However, these methods require large amounts of labeled data, which are costly to obtain. In this study, we propose the Semixup algorithm, a semi-supervised learning (SSL) approach to leverage unlabeled data. Semixup relies on consistency regularization using in- and out-of-manifold samples, together with interpolated consistency. On an independent test set, our method significantly outperformed other state-of-the-art SSL methods in most cases. Finally, when compared to a well-tuned fully supervised baseline that yielded a balanced accuracy (BA) of 70.9 ± 0.8% on the test set, Semixup had comparable performance - BA of 71 ± 0.8% ( p=0.368 ) while requiring 6 times less labeled data. These results show that our proposed SSL method allows building fully automatic OA severity assessment tools with datasets that are available outside research settings.
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7
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Holzer L, Kraiger M, Talakic E, Fritz G, Avian A, Hofmeister A, Leithner A, Holzer G. Microstructural analysis of subchondral bone in knee osteoarthritis. Osteoporos Int 2020; 31:2037-2045. [PMID: 32472294 PMCID: PMC7497490 DOI: 10.1007/s00198-020-05461-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 05/07/2020] [Indexed: 01/27/2023]
Abstract
UNLABELLED The results of this study show increased formation of bone in the subchondral areas in advanced stages of osteoarthritis of the knee. These changes seem to be influenced by mechanical factors. INTRODUCTION Subchondral bone changes seem to contribute to the progression of knee osteoarthritis (OA). This study aimed to analyze subchondral bone microstructure in specimens of late-stage knee OA in respect to articular cartilage damage, meniscus integrity, and knee joint alignment. METHODS Thirty proximal tibiae of 30 patients (20 female and 10 male) with late-stage OA retrieved during total knee arthroplasty were scanned using a high-resolution micro-computed tomography. The scans were semi-automatically segmented into five volumes of interest. The volumes of interest were then further analyzed using commercially available software. The degree of articular cartilage damage was assessed semi-quantitatively by magnetic resonance imaging before surgery. RESULTS The mean bone fraction volume (bone volume/total volume (BV/TV)) in all weight-bearing locations was significantly higher compared to the non-weight-bearing reference point below the anterior cruciate ligament (p = 0.000). The mean BV/TV in the medial compartment was significantly higher compared to the lateral compartment (p = 0.007). As for the BV/TV in intact menisci, there was a significantly lower subchondral bone fraction volume compared to subluxated or luxated menisci in the medial (p = 0.020) and lateral compartment (p = 0.005). Varus alignment had a significantly higher subchondral BV/TV in the medial compartment, whereas valgus alignment had a significantly higher subchondral BV/TV in the lateral compartment (p = 0.011). CONCLUSIONS The results show significant differences of subchondral bone microstructural parameters in respect to cartilage damage, meniscus' structural integrity, and knee joint alignment. Therefore, subchondral bone changes seem to be a secondary process in the late-stage OA of the knee caused by mechanical changes.
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Affiliation(s)
- L.A. Holzer
- grid.11598.340000 0000 8988 2476Department of Orthopaedics and Trauma, Medical University of Graz, Auenbruggerplatz 5, 8036 Graz, Austria
- AUVA Trauma Center Klagenfurt, Waidmannsdorfer Straße 35, Klagenfurt am Wörthersee, Austria
| | - M. Kraiger
- grid.410413.30000 0001 2294 748XInstitute of Medical Engineering, Graz University of Technology, Graz, Austria
| | - E. Talakic
- grid.11598.340000 0000 8988 2476Division of General Radiology, Department of Radiology, Medical University of Graz, Graz, Austria
| | - G.A. Fritz
- grid.11598.340000 0000 8988 2476Division of General Radiology, Department of Radiology, Medical University of Graz, Graz, Austria
| | - A. Avian
- grid.11598.340000 0000 8988 2476Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, Graz, Austria
| | - A. Hofmeister
- grid.11598.340000 0000 8988 2476PreClinical Imaging Group, Center for Biomedical Research, Medical University Graz, Graz, Austria
| | - A. Leithner
- grid.11598.340000 0000 8988 2476Department of Orthopaedics and Trauma, Medical University of Graz, Auenbruggerplatz 5, 8036 Graz, Austria
| | - G. Holzer
- grid.22937.3d0000 0000 9259 8492Department of Orthopaedics and Trauma Surgery, Medical University of Vienna, Vienna, Austria
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Muñoz-García N, Cordero-Ampuero J, Madero-Jarabo R. Diagnostic Accuracy of Magnetic Resonance Images and Weight-Bearing Radiographs in Patients With Arthroscopic-Proven Medial Osteoarthritis of the Knee. CLINICAL MEDICINE INSIGHTS-ARTHRITIS AND MUSCULOSKELETAL DISORDERS 2020; 13:1179544120938369. [PMID: 32843843 PMCID: PMC7418247 DOI: 10.1177/1179544120938369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 05/11/2020] [Indexed: 01/07/2023]
Abstract
Aims: The aim of this study is to analyze the diagnostic value of weight-bearing radiographs, magnetic resonance images (MRI), and the combination of both in osteoarthritic knees when using arthroscopic findings as the “gold standard” to compare with. Methods: A total of 59 patients were studied because of chronic pain in 1 of their knees. Radiographs were classified according to Kellgren-Lawrence scale. Magnetic resonance images were classified according to Vallotton, and arthroscopic findings according to Outerbridge criteria. Results: Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were, respectively, 75.0%, 60.0%, 56.2%, 77.8%, and 66.1% for weight-bearing radiographs, and 70.8%, 88.6%, 81.0%, 81.6%, and 81.4% for MRI. Logistic regression analysis showed that a weight-bearing radiograph added to MRI offered no additional diagnostic value compared with MRI alone (P < .001). Conclusions: Magnetic resonance images presented higher specificity, positive and negative predictive values, and accuracy than weight-bearing radiographs for knee osteoarthritis. The combination of radiographs and MRI did not improve the diagnostic accuracy, compared with MRI alone.
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Affiliation(s)
- Nuria Muñoz-García
- Department of Orthopaedic Surgery, Santa Cristina University Hospital, Madrid, Spain
| | - José Cordero-Ampuero
- Department of Orthopaedic Surgery, La Princesa University Hospital, Autonoma University, Madrid, Spain
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9
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Oliver HA, Bozynski CC, Cook CR, Kuroki K, Sherman SL, Stoker AM, Cook JL. Enhanced Subchondroplasty Treatment for Post-Traumatic Cartilage and Subchondral Bone Marrow Lesions in a Canine Model. J Orthop Res 2020; 38:740-746. [PMID: 31692048 DOI: 10.1002/jor.24508] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 10/25/2019] [Indexed: 02/04/2023]
Abstract
This study characterizes outcomes associated with subchondroplasty (SCP) versus SCP enhanced with platelet-rich plasma (PRP) or bone marrow aspirate concentrate (BMC) treatment of impact-induced subchondral bone marrow lesions (BML) using a validated preclinical canine model. With IACUC approval, purpose-bred research hounds (n = 24) underwent arthroscopic impact injury (40 N) to both medial femoral condyles. At 3 months, functional assessments, arthroscopy, and magnetic resonance imaging (MRI) were performed. One knee in each dog (n = 24; n = 12 per endpoint) was randomly assigned to SCP with the other knee randomly assigned to SCP + PRP, SCP + BMC or sham injection (control) (n = 8 per group; n = 4 per endpoint). Dogs were evaluated at 6 and 12 months after treatment using functional assessments, radiography, arthroscopy, and MRI and humanely euthanatized at 6 or 12 months after treatment for histologic assessments. At 6 months post-treatment, comfortable range-of-motion (CROM) was higher (p < 0.04) in SCP + PRP and SCP + BMC knees compared with controls. At 1 year post-treatment, %Total Pressure Index was higher (p = 0.036) in SCP + BMC compared with controls, pain was lower (p < 0.05) in SCP + BMC and SCP + PRP compared with SCP and controls, and CROM was higher (p < 0.05) in SCP + BMC and SCP + PRP compared with SCP and controls. Knees treated with SCP + PRP and SCP + BMC had better (p < 0.05) MRI grades than SCP and controls. No statistically significant differences in arthroscopic or histologic pathology were noted. Clinical significance: Biologics added to SCP treatment may further enhance its beneficial effects by improving range-of-motion, pain severity, and limb loading through 1 year after treatment. However, these benefits must be considered alongside cost, logistics, and treatment availability. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 38:740-746, 2020.
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Affiliation(s)
- Harvey A Oliver
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri
| | - Chantelle C Bozynski
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri.,Thompson Laboratory for Regenerative Orthopaedics, University of Missouri, Columbia, Missouri
| | - Cristi R Cook
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri.,Thompson Laboratory for Regenerative Orthopaedics, University of Missouri, Columbia, Missouri
| | - Keiichi Kuroki
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri.,Thompson Laboratory for Regenerative Orthopaedics, University of Missouri, Columbia, Missouri
| | - Seth L Sherman
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri
| | - Aaron M Stoker
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri.,Thompson Laboratory for Regenerative Orthopaedics, University of Missouri, Columbia, Missouri
| | - James L Cook
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri.,Thompson Laboratory for Regenerative Orthopaedics, University of Missouri, Columbia, Missouri
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10
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Hayashi D, Guermazi A. Is a Small Meniscal Radial Tear Equivalent to a Radial Posterior Root Tear in Destabilizing the Meniscus? Comment on the Article by Driban et al. Arthritis Rheumatol 2020; 72:197-198. [DOI: 10.1002/art.41126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Daichi Hayashi
- Stony Brook Medicine State University of New York Stony Brook, NY and Boston University School of Medicine Boston MA
| | - Ali Guermazi
- Boston University School of Medicine Boston, MA and VA Boston Healthcare System West Roxbury MA
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11
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Nielsen AW, Klose-Jensen R, Hartlev LB, Boel LWT, Thomsen JS, Keller KK, Hauge EM. Age-related histological changes in calcified cartilage and subchondral bone in femoral heads from healthy humans. Bone 2019; 129:115037. [PMID: 31425888 DOI: 10.1016/j.bone.2019.115037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 07/18/2019] [Accepted: 08/15/2019] [Indexed: 11/23/2022]
Abstract
OBJECTIVE Age is the most important risk factor for osteoarthritis (OA). It is suggested that changes in subchondral bone and calcified cartilage may occur in early OA. Therefore, the aim was to investigate age-related changes in the femoral head composition. We hypothesise that the thickness of the subchondral bone plate decreases with age, while the thickness of the calcified cartilage increases with age as seen in early-stage OA. METHODS Femoral heads from 29 women (20-74 years) and 32 men (23-78 years), who had died suddenly and unexpectedly, were obtained at autopsy. Individuals with bone or joint diseases or macroscopic abnormal cartilage were excluded. Using design-based stereology, femoral head volume as well as thickness and volume of the calcified cartilage and subchondral bone plate were estimated and correlated to sex and age. RESULTS The thickness and volume of the subchondral bone plate were not correlated with age. Calcified cartilage thickness and volume correlated positively with age in women, while the femoral head volume was correlated positively with age in men. CONCLUSION In human femoral heads obtained from a cross-sectional population without macroscopic OA changes, the thickness of the subchondral bone plate did not change with age, which differs from the thinning seen in early OA. Surprisingly, the age-related changes of the volume and thickness of the calcified cartilage and of the volume of the femoral head were different for women and men. This indicate that cartilage and bone metabolism is sex-specific, which may influence ageing of the hip joint.
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Affiliation(s)
| | | | | | | | | | | | - Ellen-Margrethe Hauge
- Department of Rheumatology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
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12
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Abstract
Bone marrow lesions of the knee in patients with osteoarthritis (OA-BML) are an important clinical entity that may explain progressive pain, decreased quality of life, and impaired function. MRI of OA-BMLs demonstrates a region of subchondral bone with hyperintense marrow signal on T2-weighted images. Histopathology retrieval studies have demonstrated that these lesions correlate with microdamage of the trabecular bone, and subsequently, this leads to a vicious cycle of subchondral bone attrition, attempts at repair, pain, and progressive deformity. These lesions have also been linked to accelerated loss of adjacent articular cartilage and increases in the severity of knee pain, prompting patients to seek musculoskeletal care and treatment. Multiple studies have also correlated the presence of an OA-BML with an increased probability of seeking knee arthroplasty. Knowledge of these lesions is important in the context that knee OA is both a cartilage-based and bone-based disease. Further study of OA-BMLs may provide opportunities for early intervention and OA disease-modifying treatments.
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13
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Haussler KK, Pool RR, Clayton HM. Characterization of bony changes localized to the cervical articular processes in a mixed population of horses. PLoS One 2019; 14:e0222989. [PMID: 31557207 PMCID: PMC6762202 DOI: 10.1371/journal.pone.0222989] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 09/11/2019] [Indexed: 11/29/2022] Open
Abstract
The objectives of this observational, cross-sectional study were to characterize and establish the prevalence of osseous proliferation of articular surfaces, joint margins and adjacent soft tissue attachments (i.e., joint capsule and deep spinal muscles) in a mixed population of horses of variable ages, sizes, and breeds to better capture the full spectrum of disease affecting the cervical articular processes. Cranial and caudal articular processes of the cervical and first three thoracic vertebrae (C2-T3) from 55 horses without a primary complaint of neck pain were evaluated for the presence and severity of abnormal bony changes. Data were analyzed to compare alterations in joint margin quadrants, paired articular surfaces within a synovial articulation, left-right laterality, and vertebral level distributions and to determine associations with age, wither height and sex. Seventy-two percent of articular processes had bony changes that were considered abnormal. Osteophyte formation was the most common bony change noted. Overall grades of severity included: normal (28%), mild (45%), moderate (22%), and severe (5%). The highest prevalence of mild changes was localized to the C3-C6 vertebral levels; moderate changes to C6-T2; and severe changes to C2-C3 and C6-T2. Most paired articular surfaces and left-right grades of severity were not significantly different. The grade of osseous pathology was positively associated with both age and wither height. A high prevalence and wide variety of abnormal bony changes of varying severity were found in articular processes across all vertebral levels. The clinical significance of the described lesions is unknown, but the findings are expected to enhance the reporting of articular process and periarticular changes noted on advanced diagnostic imaging of the equine cervical and cranial thoracic vertebral regions.
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Affiliation(s)
- Kevin K. Haussler
- Gail Holmes Equine Orthopaedic Research Center, Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado, United States of America
- * E-mail:
| | - Roy R. Pool
- Texas A&M University, Department of Veterinary Pathobiology, Veterinary Medicine and Biomedical Sciences, College Station, Texas, United States of America
| | - Hilary M. Clayton
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, Michigan, United States of America
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15
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Sensitization of transient receptor potential vanilloid 4 and increasing its endogenous ligand 5,6-epoxyeicosatrienoic acid in rats with monoiodoacetate-induced osteoarthritis. Pain 2019; 159:939-947. [PMID: 29438227 DOI: 10.1097/j.pain.0000000000001169] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Transient receptor potential vanilloid 4 (TRPV4) receptor modulates pain, and this has been noted in several animal models. However, the involvement of TRPV4 in osteoarthritic (OA) pain remains poorly understood. This study assessed the functional changes in TRPV4 and the expression of its endogenous ligand 5,6-epoxyeicosatrienoic acid (5,6-EET) in a rat monoiodoacetate (MIA)-induced OA pain model (MIA rats). Monoiodoacetate-treated rats showed reduced grip strength as compared to sham-treated rats, and this loss in function could be recovered by the intraarticular administration of a TRPV4 antagonist (HC067047 or GSK2193874). By contrast, the intraarticular administration of the TRPV4 agonist, GSK1016790A, increased the pain-related behaviors in MIA rats but not in sham rats. TRPV4 expression was not increased in knee joints of MIA rats; however, the levels of phosphorylated TRPV4 at Ser824 were increased in dorsal root ganglion neurons. In addition, 5,6-EET was increased in lavage fluids from the knee joints of MIA rats and in meniscectomy-induced OA pain model rats. 5,6-EET and its metabolite were also detected in synovial fluids from patients with OA. In conclusion, TRPV4 was sensitized in the knee joints of MIA rats through phosphorylation in dorsal root ganglion neurons, along with an increase in the levels of its endogenous ligand 5,6-EET. The analgesic effects of the TRPV4 antagonist in the OA pain model rats suggest that TRPV4 may be a potent target for OA pain relief.
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Singh V, Oliashirazi A, Tan T, Fayyad A, Shahi A. Clinical and Pathophysiologic Significance of MRI Identified Bone Marrow Lesions Associated with Knee Osteoarthritis. THE ARCHIVES OF BONE AND JOINT SURGERY 2019; 7:211-219. [PMID: 31312677 PMCID: PMC6578476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 01/04/2019] [Indexed: 06/10/2023]
Abstract
UNLABELLED Knee osteoarthritis (OA) affects the joint beyond just the articular cartilage. Specifically, magnetic resonance imaging-identified bone marrow lesions (BML) in the subchondral bone have both clinical and pathophysiological significance. Compared to joint space narrowing on traditional radiographs, the presence of BMLs has been better correlated with severity of clinical symptoms as well as clinical deterioration. Presence of a BML increases the likelihood for progression to a total knee arthroplasty by up to nine fold. Histochemical analysis of BMLs has shown increased levels of tumor necrosis factor-alpha, matrix metalloproteinases and substance P, thought to stimulate pain receptors in osteoarthritis. LEVEL OF EVIDENCE V.
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Affiliation(s)
- Vishavpreet Singh
- Oliashirazi Institute at Marshall University, Huntington, WV, USA
- Rothman Institute at Thomas Jefferson University, Philadephia, PA, USA
- Medcare Orthopedics and Spine Hospital, Dubai, UAE
- Cooper Bone and Joint Institute at Cooper Medical School of Rowan University, Camden, NJ, USA
- Oliashirazi Institute at Marshall University, Huntington, WV, USA
- Rothman Institute at Thomas Jefferson University, Philadelphia, PA, USA
- Research performed at Oliashirazi Institute at Marshall University, Huntington, USA
| | - Ali Oliashirazi
- Oliashirazi Institute at Marshall University, Huntington, WV, USA
- Rothman Institute at Thomas Jefferson University, Philadephia, PA, USA
- Medcare Orthopedics and Spine Hospital, Dubai, UAE
- Cooper Bone and Joint Institute at Cooper Medical School of Rowan University, Camden, NJ, USA
- Oliashirazi Institute at Marshall University, Huntington, WV, USA
- Rothman Institute at Thomas Jefferson University, Philadelphia, PA, USA
- Research performed at Oliashirazi Institute at Marshall University, Huntington, USA
| | - Timothy Tan
- Oliashirazi Institute at Marshall University, Huntington, WV, USA
- Rothman Institute at Thomas Jefferson University, Philadephia, PA, USA
- Medcare Orthopedics and Spine Hospital, Dubai, UAE
- Cooper Bone and Joint Institute at Cooper Medical School of Rowan University, Camden, NJ, USA
- Oliashirazi Institute at Marshall University, Huntington, WV, USA
- Rothman Institute at Thomas Jefferson University, Philadelphia, PA, USA
- Research performed at Oliashirazi Institute at Marshall University, Huntington, USA
| | - Azzam Fayyad
- Oliashirazi Institute at Marshall University, Huntington, WV, USA
- Rothman Institute at Thomas Jefferson University, Philadephia, PA, USA
- Medcare Orthopedics and Spine Hospital, Dubai, UAE
- Cooper Bone and Joint Institute at Cooper Medical School of Rowan University, Camden, NJ, USA
- Oliashirazi Institute at Marshall University, Huntington, WV, USA
- Rothman Institute at Thomas Jefferson University, Philadelphia, PA, USA
- Research performed at Oliashirazi Institute at Marshall University, Huntington, USA
| | - Alisina Shahi
- Oliashirazi Institute at Marshall University, Huntington, WV, USA
- Rothman Institute at Thomas Jefferson University, Philadephia, PA, USA
- Medcare Orthopedics and Spine Hospital, Dubai, UAE
- Cooper Bone and Joint Institute at Cooper Medical School of Rowan University, Camden, NJ, USA
- Oliashirazi Institute at Marshall University, Huntington, WV, USA
- Rothman Institute at Thomas Jefferson University, Philadelphia, PA, USA
- Research performed at Oliashirazi Institute at Marshall University, Huntington, USA
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Brimmo OA, Bozynski CC, Cook CR, Kuroki K, Sherman SL, Pfeiffer FM, Stoker AM, Cook JL. Subchondroplasty for the treatment of post-traumatic bone marrow lesions of the medial femoral condyle in a pre-clinical canine model. J Orthop Res 2018; 36:2709-2717. [PMID: 29748965 DOI: 10.1002/jor.24046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 05/07/2018] [Indexed: 02/04/2023]
Abstract
This study characterizes long-term outcomes associated with subchondroplasty (SCP) treatment for impact-induced subchondral bone marrow lesions (BML) using a validated pre-clinical canine model. With IACUC approval, purpose-bred research hounds (n = 16) underwent arthroscopic impact injury (40N) to both medial femoral condyles. At 3 months, functional assessments, arthroscopy, and MRI were performed and knees (n = 32) were randomly assigned to SCP (3 ml fluoroscopically guided percutaneous injection of AccuFill BSM into BML bone defects) or sham injection (Control). Dogs were assessed at 3, 6, 12, and 24 months after treatment using functional assessments, radiographic evaluation, arthroscopy, and MRI. Dogs were humanely euthanatized at 3, 6, 12, or 24 months after treatment for gross, microCT, and histologic assessments. All knees had focal articular cartilage defects with associated subchondral BMLs, as well as clinical dysfunction, 3 months after injury. At the 3 and 6 months, SCP knees showed more functional impairment than Control knees, however, these differences were not statistically significant. At 1- and 2-year post-treatment, function in SCP knees was better than in Control knees with range of motion being significantly (p < 0.05) better for SCP. Radiographic, arthroscopic, MRI, gross, microCT, and histologic findings matched the functional assessments well with Control being associated with better results at the two early time points and SCP being associated with better results at 1 and 2 years. Clinical significance: SCP treatment using calcium phosphate bone void filler was associated with an initial increase in pain and dysfunction followed by symptomatic benefits for up to 2 years after treatment for post-traumatic femoral condyle BMLs in a preclinical canine model. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:2709-2717, 2018.
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Affiliation(s)
- Olubusola A Brimmo
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri
| | - Chantelle C Bozynski
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri.,Thompson Laboratory for Regenerative Orthopaedics and Mizzou BioJoint Center, University of Missouri, Missouri Orthopaedic Institute (4028A), 1100 Virginia Ave., Columbia, Missouri 65212
| | - Cristi R Cook
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri.,Thompson Laboratory for Regenerative Orthopaedics and Mizzou BioJoint Center, University of Missouri, Missouri Orthopaedic Institute (4028A), 1100 Virginia Ave., Columbia, Missouri 65212
| | - Keiichi Kuroki
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri.,Thompson Laboratory for Regenerative Orthopaedics and Mizzou BioJoint Center, University of Missouri, Missouri Orthopaedic Institute (4028A), 1100 Virginia Ave., Columbia, Missouri 65212
| | - Seth L Sherman
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri
| | - Ferris M Pfeiffer
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri.,Thompson Laboratory for Regenerative Orthopaedics and Mizzou BioJoint Center, University of Missouri, Missouri Orthopaedic Institute (4028A), 1100 Virginia Ave., Columbia, Missouri 65212
| | - Aaron M Stoker
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri.,Thompson Laboratory for Regenerative Orthopaedics and Mizzou BioJoint Center, University of Missouri, Missouri Orthopaedic Institute (4028A), 1100 Virginia Ave., Columbia, Missouri 65212
| | - James L Cook
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri.,Thompson Laboratory for Regenerative Orthopaedics and Mizzou BioJoint Center, University of Missouri, Missouri Orthopaedic Institute (4028A), 1100 Virginia Ave., Columbia, Missouri 65212
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Lo GH, Schneider E, Driban JB, Price LL, Hunter DJ, Eaton CB, Hochberg MC, Jackson RD, Kwoh CK, Nevitt MC, Lynch JA, McAlindon TE. Periarticular bone predicts knee osteoarthritis progression: Data from the Osteoarthritis Initiative. Semin Arthritis Rheum 2018; 48:155-161. [PMID: 29449014 DOI: 10.1016/j.semarthrit.2018.01.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 12/22/2017] [Accepted: 01/10/2018] [Indexed: 12/21/2022]
Abstract
OBJECTIVE Osteoarthritis (OA) is a disease with a substantial public health burden. Quantitative assessments of periarticular bone may be a biomarker capable of monitoring early disease progression. The purpose of this study was to evaluate whether measures of periarticular bone associate with longitudinal structural progression. METHODS We conducted a 12-18 months longitudinal study using the Osteoarthritis Initiative (OAI). Participants received knee dual-energy x-ray absorptiometry (DXA), trabecular magnetic resonance (MR) imaging, and x-rays. Knee DXAs generated proximal tibial medial:lateral periarticular bone mineral density (paBMD) measures. Proximal tibial trabecular MR images were assessed for trabecular morphometry: apparent bone volume fraction (BVF), trabecular number, thickness, and spacing. Weight-bearing x-rays were assessed for medial tibiofemoral joint space narrowing (JSN). Chi-squared analyses assessed whether periarticular bone measures were predictive of worsening medial tibiofemoral JSN, adjusted for age, sex, and BMI. RESULTS In all, 444 participants, mean age 64.2 ± 9.2 years, BMI 29.5 ± 4.6kg/m2, and 52% male at baseline. Medial JSN (radiographic progression) occurred in 40 participants (9%). Higher baseline medial:lateral paBMD, apparent BVF, trabecular number and thickness, and lower baseline and decreased trabecular spacing were all associated with more progression of JSN in the medial compartment. From lowest to highest baseline medial:lateral paBMD quartile groups, 2%, 5%, 11%, and 18% had medial JSN progression, respectively, between the 36- and 48-month visits, p-values = 0.001 and 0.002 unadjusted and adjusted. The rate of change in medial:lateral paBMD, apparent BVF, and spacing were associated with more medial JSN. For rate of medial:lateral paBMD change from lowest to highest quartile, the proportion of each group that experienced medial JSN progression were 5%, 5%, 11%, and 18%, with an unadjusted and adjusted p-value of 0.005. CONCLUSION Baseline and most rates of periarticular bone change associate with knee OA structural progression, highlighting the close relationship between subchondral bone and JSN. Future studies should focus on developing these measures as predictive and pathophysiological biomarkers, and evaluating their deployment in clinical trials testing bone-targeted therapeutics.
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Affiliation(s)
- Grace H Lo
- Department of Medicine, Baylor College of Medicine, Houston, TX; Medical Care Line and Research Care Line, Houston VA HSR&D Center for Innovations in Quality, Effectiveness and Safety, Michael E. DeBakey Medical Center, Houston, TX.
| | - Erika Schneider
- Imaging Institute, Cleveland Clinic Foundation, Cleveland, OH; SciTrials, LCC, Rocky River, OH
| | | | - Lori Lyn Price
- The Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, Boston, MA; Tufts Clinical and Translational Science Institute, Tufts University, Boston, MA
| | - David J Hunter
- Royal North Shore Hospital and Institute of Bone and Joint Research, Kolling Institute, University of Sydney, Australia
| | - Charles B Eaton
- Department of Family Medicine, Warren Alpert Medical School of Brown University, Providence, RI; Department of Epidemiology, School of Public Health of Brown University, Providence, RI
| | | | - Rebecca D Jackson
- Division of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, The Ohio State University, Columbus, OH
| | - C Kent Kwoh
- University of Pittsburgh School of Medicine, Pittsburgh, PA; University of Arizona Arthritis Center, Tucson, AZ
| | | | - John A Lynch
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA
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Aho OM, Finnilä M, Thevenot J, Saarakkala S, Lehenkari P. Subchondral bone histology and grading in osteoarthritis. PLoS One 2017; 12:e0173726. [PMID: 28319157 PMCID: PMC5358796 DOI: 10.1371/journal.pone.0173726] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 02/24/2017] [Indexed: 11/26/2022] Open
Abstract
Objective Osteoarthritis (OA) has often regarded as a disease of articular cartilage only. New evidence has shifted the paradigm towards a system biology approach, where also the surrounding tissue, especially bone is studied more vigorously. However, the histological features of subchondral bone are only poorly characterized in current histological grading scales of OA. The aim of this study is to specifically characterize histological changes occurring in subchondral bone at different stages of OA and propose a simple grading system for them. Design 20 patients undergoing total knee replacement surgery were randomly selected for the study and series of osteochondral samples were harvested from the tibial plateaus for histological analysis. Cartilage degeneration was assessed using the standardized OARSI grading system, while a novel four-stage grading system was developed to illustrate the changes in subchondral bone. Subchondral bone histology was further quantitatively analyzed by measuring the thickness of uncalcified and calcified cartilage as well as subchondral bone plate. Furthermore, internal structure of calcified cartilage-bone interface was characterized utilizing local binary patterns (LBP) based method. Results The histological appearance of subchondral bone changed drastically in correlation with the OARSI grading of cartilage degeneration. As the cartilage layer thickness decreases the subchondral plate thickness and disorientation, as measured with LBP, increases. Calcified cartilage thickness was highest in samples with moderate OA. Conclusion The proposed grading system for subchondral bone has significant relationship with the corresponding OARSI grading for cartilage. Our results suggest that subchondral bone remodeling is a fundamental factor already in early stages of cartilage degeneration.
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Affiliation(s)
- Olli-Matti Aho
- Department of Anatomy and Cell Biology, Institute of Biomedicine, University of Oulu, Oulu, Finland
- * E-mail:
| | - Mikko Finnilä
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Jerome Thevenot
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Simo Saarakkala
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland
- Department of Diagnostic Radiology, Medical Research Center, Oulu University Hospital, Oulu, Finland
| | - Petri Lehenkari
- Department of Anatomy and Cell Biology, Institute of Biomedicine, University of Oulu, Oulu, Finland
- Division of Orthopaedic and Trauma Surgery, Department of Surgery, Medical Research Center, Oulu University Hospital, Oulu, Finland
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Raynauld JP, Pelletier JP, Delorme P, Dodin P, Abram F, Martel-Pelletier J. Bone curvature changes can predict the impact of treatment on cartilage volume loss in knee osteoarthritis: data from a 2-year clinical trial. Rheumatology (Oxford) 2017; 56:989-998. [DOI: 10.1093/rheumatology/kew504] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Indexed: 12/31/2022] Open
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22
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Changes in the osteochondral unit during osteoarthritis: structure, function and cartilage-bone crosstalk. Nat Rev Rheumatol 2016; 12:632-644. [PMID: 27652499 DOI: 10.1038/nrrheum.2016.148] [Citation(s) in RCA: 515] [Impact Index Per Article: 64.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In diarthrodial joints, the articular cartilage, calcified cartilage, and subchondral cortical and trabecular bone form a biocomposite - referred to as the osteochondral unit - that is uniquely adapted to the transfer of load. During the evolution of the osteoarthritic process the compositions, functional properties, and structures of these tissues undergo marked alterations. Although pathological processes might selectively target a single joint tissue, ultimately all of the components of the osteochondral unit will be affected because of their intimate association, and thus the biological and physical crosstalk among them is of great importance. The development of targeted therapies against the osteoarthritic processes in cartilage or bone will, therefore, require an understanding of the state of these joint tissues at the time of the intervention. Importantly, these interventions will not be successful unless they are applied at the early stages of disease before considerable structural and functional alterations occur in the osteochondral unit. This Review describes the changes that occur in bone and cartilage during the osteoarthritic process, and highlights strategies for how this knowledge could be applied to develop new therapeutic interventions for osteoarthritis.
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Osteoarthritis as a Cause of Locomotive Syndrome: Its Influence on Functional Mobility and Activities of Daily Living. Clin Rev Bone Miner Metab 2016. [DOI: 10.1007/s12018-016-9212-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Jarraya M, Hayashi D, Roemer FW, Guermazi A. MR Imaging-based Semi-quantitative Methods for Knee Osteoarthritis. Magn Reson Med Sci 2015; 15:153-64. [PMID: 26632537 PMCID: PMC5600052 DOI: 10.2463/mrms.rev.2015-0058] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Magnetic resonance imaging (MRI)-based semi-quantitative (SQ) methods applied to knee osteoarthritis (OA) have been introduced during the last decade and have fundamentally changed our understanding of knee OA pathology since then. Several epidemiological studies and clinical trials have used MRI-based SQ methods to evaluate different outcome measures. Interest in MRI-based SQ scoring system has led to continuous update and refinement. This article reviews the different SQ approaches for MRI-based whole organ assessment of knee OA and also discuss practical aspects of whole joint assessment.
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Affiliation(s)
- Mohamed Jarraya
- Quantitative Imaging Center, Department of Radiology, Boston University School of Medicine
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Barr AJ, Campbell TM, Hopkinson D, Kingsbury SR, Bowes MA, Conaghan PG. A systematic review of the relationship between subchondral bone features, pain and structural pathology in peripheral joint osteoarthritis. Arthritis Res Ther 2015; 17:228. [PMID: 26303219 PMCID: PMC4548899 DOI: 10.1186/s13075-015-0735-x] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 08/03/2015] [Indexed: 12/20/2022] Open
Abstract
INTRODUCTION Bone is an integral part of the osteoarthritis (OA) process. We conducted a systematic literature review in order to understand the relationship between non-conventional radiographic imaging of subchondral bone, pain, structural pathology and joint replacement in peripheral joint OA. METHODS A search of the Medline, EMBASE and Cochrane library databases was performed for original articles reporting association between non-conventional radiographic imaging-assessed subchondral bone pathologies and joint replacement, pain or structural progression in knee, hip, hand, ankle and foot OA. Each association was qualitatively characterised by a synthesis of the data from each analysis based upon study design, adequacy of covariate adjustment and quality scoring. RESULTS In total 2456 abstracts were screened and 139 papers were included (70 cross-sectional, 71 longitudinal analyses; 116 knee, 15 hip, six hand, two ankle and involved 113 MRI, eight DXA, four CT, eight scintigraphic and eight 2D shape analyses). BMLs, osteophytes and bone shape were independently associated with structural progression or joint replacement. BMLs and bone shape were independently associated with longitudinal change in pain and incident frequent knee pain respectively. CONCLUSION Subchondral bone features have independent associations with structural progression, pain and joint replacement in peripheral OA in the hip and hand but especially in the knee. For peripheral OA sites other than the knee, there are fewer associations and independent associations of bone pathologies with these important OA outcomes which may reflect fewer studies; for example the foot and ankle were poorly studied. Subchondral OA bone appears to be a relevant therapeutic target. SYSTEMATIC REVIEW PROSPERO registration number: CRD 42013005009.
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Affiliation(s)
- Andrew J Barr
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and NIHR Leeds Musculoskeletal Biomedical Research Unit, Chapeltown Rd, Leeds, LS7 4SA, UK.
| | - T Mark Campbell
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and NIHR Leeds Musculoskeletal Biomedical Research Unit, Chapeltown Rd, Leeds, LS7 4SA, UK.
- Department of Medicine, University of Ottawa, Ottawa, Canada.
| | | | - Sarah R Kingsbury
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and NIHR Leeds Musculoskeletal Biomedical Research Unit, Chapeltown Rd, Leeds, LS7 4SA, UK.
| | | | - Philip G Conaghan
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and NIHR Leeds Musculoskeletal Biomedical Research Unit, Chapeltown Rd, Leeds, LS7 4SA, UK.
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Kraus VB, Blanco FJ, Englund M, Karsdal MA, Lohmander LS. Call for standardized definitions of osteoarthritis and risk stratification for clinical trials and clinical use. Osteoarthritis Cartilage 2015; 23:1233-41. [PMID: 25865392 PMCID: PMC4516635 DOI: 10.1016/j.joca.2015.03.036] [Citation(s) in RCA: 375] [Impact Index Per Article: 41.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Revised: 03/18/2015] [Accepted: 03/31/2015] [Indexed: 02/02/2023]
Abstract
Osteoarthritis (OA) is a heterogeneous disorder. The goals of this review are (1) To stimulate use of standardized nomenclature for OA that could serve as building blocks for describing OA and defining OA phenotypes, in short to provide unifying disease concepts for a heterogeneous disorder; and (2) To stimulate establishment of ROAD (Risk of OA Development) and ROAP (Risk of OA Progression) tools analogous to the FRAX™ instrument for predicting risk of fracture in osteoporosis; and (3) To stimulate formulation of tools for identifying disease in its early preradiographic and/or molecular stages - REDI (Reliable Early Disease Identification). Consensus around more sensitive and specific diagnostic criteria for OA could spur development of disease modifying therapies for this entity that has proved so recalcitrant to date. We fully acknowledge that as we move forward, we expect to develop more sophisticated definitions, terminology and tools.
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Affiliation(s)
- V B Kraus
- Duke Molecular Physiology Institute and Department of Medicine, Duke University School of Medicine, Durham, NC, USA.
| | - F J Blanco
- Grupo de Proteomica, ProteoRed/ISCIII, Servicio de Reumatologia, Instituto de Investigación Biomedica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas, Universidade da Coruña (UDC), As Xubias, 15006, A Coruña, Spain
| | - M Englund
- Orthopedics, Clinical Sciences Lund, Lund University, Lund, Sweden; Clinical Epidemiology Research and Training Unit, Boston University School of Medicine, Boston University, MA, USA
| | | | - L S Lohmander
- Orthopedics, Clinical Sciences Lund, Lund University, Lund, Sweden; Research Unit for Musculoskeletal Function and Physiotherapy, and Department of Orthopedics and Traumatology, University of Southern Denmark, Odense, Denmark
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Bani Hassan E, Mirams M, Ghasem-Zadeh A, Mackie EJ, Whitton RC. Role of subchondral bone remodelling in collapse of the articular surface of Thoroughbred racehorses with palmar osteochondral disease. Equine Vet J 2015; 48:228-33. [DOI: 10.1111/evj.12415] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2014] [Accepted: 01/01/2015] [Indexed: 11/29/2022]
Affiliation(s)
- E. Bani Hassan
- Faculty of Veterinary Science; University of Melbourne; Victoria Australia
| | - M. Mirams
- Faculty of Veterinary Science; University of Melbourne; Victoria Australia
| | - A. Ghasem-Zadeh
- Department of Endocrinology and Medicine, Austin Health; University of Melbourne; Victoria Australia
| | - E. J. Mackie
- Faculty of Veterinary Science; University of Melbourne; Victoria Australia
| | - R. C. Whitton
- Faculty of Veterinary Science; University of Melbourne; Victoria Australia
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28
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Wenham CY, Grainger AJ, Conaghan PG. Imaging of osteoarthritis. Rheumatology (Oxford) 2015. [DOI: 10.1016/b978-0-323-09138-1.00177-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Hunter DJ, Lohmander LS, Makovey J, Tamez-Peña J, Totterman S, Schreyer E, Frobell RB. The effect of anterior cruciate ligament injury on bone curvature: exploratory analysis in the KANON trial. Osteoarthritis Cartilage 2014; 22:959-68. [PMID: 24867633 DOI: 10.1016/j.joca.2014.05.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 04/30/2014] [Accepted: 05/14/2014] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Investigate the 5-year longitudinal changes in bone curvature after acute anterior cruciate ligament (ACL) injury, and identify predictors of such changes. METHODS In the KANON-trial (ISRCTN 84752559), 111/121 young active adults with an acute ACL tear to a previously un-injured knee had serial 1.5 T MR images from baseline (within 5 weeks from injury) to 5 years after injury. Of these, 86 had ACL reconstruction (ACLR) performed early or delayed, 25 were treated with rehabilitation alone. Measures of articulating bone curvature were obtained from computer-assisted segmentation of MR images. Curvature (mm(-1)) was determined for femur, tibia, medial/lateral femur, trochlea, medial/lateral tibia. Age, sex, treatment, BMI, meniscal injury, osteochondral fracture on baseline MR images were tested for association. RESULTS Over 5 years, curvature decreased in each region (P < 0.001) suggesting flattening of convex shapes and increased concavity of concave shapes. A higher BMI was associated with flattening of the femur (P = 0.03), trochlea (P = 0.007) and increasing concavity of the lateral tibia (LT) (P = 0.011). ACLR, compared to rehabilitation alone, was associated with flatter curvature in the femur (P < 0.001), medial femoral condyle (P = 0.006) and trochlea (P = 0.003). Any meniscal injury at baseline was associated with a more flattened curvature in the femur (P = 0.038), trochlea (P = 0.039), lateral femoral condyle (P = 0.034) and increasing concavity of the LT (P = 0.048). CONCLUSION ACL injury is associated with significant changes in articulating bone curvature over a 5 year period. Higher BMI, baseline meniscal injury and undergoing ACL reconstruction (as distinct from undergoing rehabilitation alone) are all associated with flattening of the articulating bone.
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Affiliation(s)
- D J Hunter
- Rheumatology Department, Royal North Shore Hospital and Kolling Institute, University of Sydney, Sydney, NSW, Australia.
| | - L S Lohmander
- Department of Orthopedics, Clinical Sciences Lund, Lund University, Lund, Sweden; Research Unit for Musculoskeletal Function and Physiotherapy and Department of Orthopaedics and Traumatology, University of Southern Denmark, Odense, Denmark
| | - J Makovey
- Rheumatology Department, Royal North Shore Hospital and Kolling Institute, University of Sydney, Sydney, NSW, Australia
| | - J Tamez-Peña
- Escuela de Medicina, Tecnológico de Monterrey, Monterrey, NL, México; Qmetrics Technologies, Rochester, NY, USA
| | | | - E Schreyer
- Qmetrics Technologies, Rochester, NY, USA
| | - R B Frobell
- Department of Orthopedics, Clinical Sciences Lund, Lund University, Lund, Sweden
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Neogi T, Bowes MA, Niu J, De Souza KM, Vincent GR, Goggins J, Zhang Y, Felson DT. Magnetic resonance imaging-based three-dimensional bone shape of the knee predicts onset of knee osteoarthritis: data from the osteoarthritis initiative. ACTA ACUST UNITED AC 2013; 65:2048-58. [PMID: 23650083 DOI: 10.1002/art.37987] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 04/18/2013] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To examine whether magnetic resonance imaging (MRI)-based 3-dimensional (3-D) bone shape predicts the onset of radiographic knee osteoarthritis (OA). METHODS We conducted a case-control study using data from the Osteoarthritis Initiative by identifying knees that developed incident tibiofemoral radiographic knee OA (case knees) during followup, and matching them each to 2 random control knees. Using knee MRIs, we performed active appearance modeling of the femur, tibia, and patella and linear discriminant analysis to identify vectors that best classified knees with OA versus those without OA. Vectors were scaled such that -1 and +1 represented the mean non-OA and mean OA shapes, respectively. We examined the relation of 3-D bone shape to incident OA (new-onset Kellgren and Lawrence [K/L] grade ≥2) occurring 12 months later using conditional logistic regression. RESULTS A total of 178 case knees (incident OA) were matched to 353 control knees. The whole joint (i.e., tibia, femur, and patella) 3-D bone shape vector had the strongest magnitude of effect, with knees in the highest tertile having a 3.0 times higher likelihood of developing incident radiographic knee OA 12 months later compared with those in the lowest tertile (95% confidence interval [95% CI] 1.8-5.0, P < 0.0001). The associations were even stronger among knees that had completely normal radiographs before incidence (K/L grade of 0) (odds ratio 12.5 [95% CI 4.0-39.3]). Bone shape at baseline, often several years before incidence, predicted later OA. CONCLUSION MRI-based 3-D bone shape predicted the later onset of radiographic OA. Further study is warranted to determine whether such methods can detect treatment effects in trials and provide insight into the pathophysiology of OA development.
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Affiliation(s)
- Tuhina Neogi
- Boston University School of Medicine, Boston, MA 02118, USA.
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Hunter DJ, Guermazi A, Roemer F, Zhang Y, Neogi T. Structural correlates of pain in joints with osteoarthritis. Osteoarthritis Cartilage 2013; 21:1170-8. [PMID: 23973127 DOI: 10.1016/j.joca.2013.05.017] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2013] [Revised: 05/16/2013] [Accepted: 05/23/2013] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To describe the insights on the epidemiology of pain-structure association and the ramifications of these studies for clinical trials. DESIGN Narrative review summarizing the pertinent literature in this area, summarizing some of the methodologic challenges inherent and proposing some research initiatives to further understanding of this complex science. RESULTS The predominant symptom in most patients presenting with osteoarthritis (OA) is pain. Over recent years a number of imaging based studies have narrowed the discord between structural findings on imaging and symptoms. The interpretation of pain in OA is still enigmatic and difficult to deal with both for clinicians and scientists. CONCLUSIONS We would envisage that over the next few years many of the pressing questions pertaining to research into the structure pain relationship will continue to be addressed. With this, we can expect clinically appropriate therapeutic advance.
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Affiliation(s)
- D J Hunter
- Kolling Institute, University of Sydney, Sydney, Australia.
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Conflit ostéoméniscal : intérêt de sa sémiologie IRM dans l’identification d’une lésion méniscale instable. À propos de 13 cas. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.rcot.2013.03.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Hunter DJ. Osteoarthritis. Best Pract Res Clin Rheumatol 2013; 25:801-14. [PMID: 22265262 DOI: 10.1016/j.berh.2011.11.008] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Accepted: 11/14/2011] [Indexed: 12/24/2022]
Abstract
The pathogenesis of osteoarthritis (OA) appears to be the result of a complex interplay between mechanical, cellular and biochemical forces. Obesity is the strongest risk factor for disease onset in the knee, and mechanical factors dominate the risk for disease progression. OA is a highly prevalent and disabling disease. The current pre-eminent focus in OA research and clinical practice is on persons with established radiographic symptomatic disease. This is the very end-stage of disease genesis, and modern therapies hence are largely palliative. In an effort to mitigate the rising tide of increasing OA prevalence and disease impact, we need to focus more on preventing the onset of disease and modifying the structural progression of OA. Greater therapeutic attention to the important role of mechanical factors, joint injury and obesity in OA etiopathogenesis, is required if we are to find ways of reducing the public health impact of this condition.
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Affiliation(s)
- David J Hunter
- Rheumatology Department, Royal North Shore Hospital and Northern Clinical School, University of Sydney, Sydney, NSW, Australia.
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Javaid MK, Kiran A, Guermazi A, Kwoh CK, Zaim S, Carbone L, Harris T, McCulloch CE, Arden NK, Lane NE, Felson D, Nevitt M. Individual magnetic resonance imaging and radiographic features of knee osteoarthritis in subjects with unilateral knee pain: the health, aging, and body composition study. ACTA ACUST UNITED AC 2013; 64:3246-55. [PMID: 22736267 DOI: 10.1002/art.34594] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
OBJECTIVE Strong associations between radiographic features of knee osteoarthritis (OA) and pain have been demonstrated in persons with unilateral knee symptoms. This study was undertaken to compare radiographic and magnetic resonance imaging (MRI) features of knee OA and assess their ability to discriminate between painful and nonpainful knees in persons with unilateral symptoms. METHODS The study population included 283 individuals ages 70-79 years with unilateral knee pain who were enrolled in the Health, Aging, and Body Composition Study, a study of weight-related diseases and mobility. Radiographs of both knees were read for Kellgren/Lawrence (K/L) grade and individual radiographic features, and 1.5T MRIs were assessed using the Whole-Organ Magnetic Resonance Imaging Score. The association between structural features and pain was assessed using a within-person case-control design and conditional logistic regression. Receiver operating characteristic (ROC) analysis was then used to test the discriminatory performance of structural features. RESULTS In conditional logistic analyses, knee pain was significantly associated with both radiographic features (any joint space narrowing grade ≥ 1) (odds ratio 3.20 [95% confidence interval 1.79-5.71]) and MRI features (any cartilage defect scored ≥ 2) (odds ratio 3.67 [95% confidence interval 1.49-9.04]). However, in most subjects, MRI revealed osteophytes and cartilage and bone marrow lesions in both knees, and using ROC analysis, no individual structural feature discriminated well between painful and nonpainful knees. The best-performing MRI feature (synovitis/effusion) was not significantly more informative than K/L grade ≥ 2 (P = 0.42). CONCLUSION In persons with unilateral knee pain, MRI and radiographic features were associated with knee pain, confirming that structural abnormalities in the knee have an important role in the etiology of pain. However, no single MRI or radiographic finding performed well in discriminating between painful and nonpainful knees. Further work is needed to examine how structural and nonstructural factors influence knee pain.
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Guermazi A, Roemer FW, Haugen IK, Crema MD, Hayashi D. MRI-based semiquantitative scoring of joint pathology in osteoarthritis. Nat Rev Rheumatol 2013; 9:236-51. [DOI: 10.1038/nrrheum.2012.223] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Durand M, Komarova SV, Bhargava A, Trebec-Reynolds DP, Li K, Fiorino C, Maria O, Nabavi N, Manolson MF, Harrison RE, Dixon SJ, Sims SM, Mizianty MJ, Kurgan L, Haroun S, Boire G, Lucena-Fernandes MDF, de Brum-Fernandes AJ. Monocytes from patients with osteoarthritis display increased osteoclastogenesis and bone resorption: The In Vitro Osteoclast Differentiation in Arthritis study. ACTA ACUST UNITED AC 2012; 65:148-58. [DOI: 10.1002/art.37722] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2011] [Accepted: 09/25/2012] [Indexed: 11/09/2022]
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Tavares Júnior WC, Faria FMD, Figueiredo R, Matushita JPK, Silva LC, Kakehasi AM. Fadiga óssea: causa de dor em joelhos na osteoartrite. Radiol Bras 2012. [DOI: 10.1590/s0100-39842012000500008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A dor no joelho é o sintoma mais comum na osteoartrite, sendo a principal causa de incapacidade crônica em idosos e uma das principais fontes de morbidade atribuível à osteoartrite em geral. As causas de dor no joelho em pessoas com osteoartrite não são facilmente entendidas e o conhecimento sobre as causas da dor é fundamental para que futuramente sejam realizadas intervenções específicas. A fadiga óssea representa o remodelamento do osso subcondral na osteoartrite, levando a uma consequente alteração na forma do osso e/ou perda óssea. No entanto, a fadiga óssea não é algo facilmente interpretado, pois é de difícil detecção na ausência de defeitos claros da cortical e pela sobreposição de estruturas ósseas nas radiografias convencionais. A fadiga óssea está associada não apenas a dor no joelho, mas também a rigidez e incapacidade. Se a fadiga ocorre antes da osteoartrite avançada, isso sugere que alterações no osso subcondral podem ocorrer simultaneamente a alterações da cartilagem e que tratamentos visando sua preservação podem não ser eficazes. Lesões com padrão de edema ósseo estão associadas e são fatores preditivos para fadiga óssea. Este trabalho tem por objetivo rever a literatura mostrando a importância da fadiga óssea e de como diagnosticar esta alteração nos exames de imagem.
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Goldring SR. Alterations in periarticular bone and cross talk between subchondral bone and articular cartilage in osteoarthritis. Ther Adv Musculoskelet Dis 2012; 4:249-58. [PMID: 22859924 DOI: 10.1177/1759720x12437353] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The articular cartilage and the subchondral bone form a biocomposite that is uniquely adapted to the transfer of loads across the diarthrodial joint. During the evolution of the osteoarthritic process biomechanical and biological processes result in alterations in the composition, structure and functional properties of these tissues. Given the intimate contact between the cartilage and bone, alterations of either tissue will modulate the properties and function of the other joint component. The changes in periarticular bone tend to occur very early in the development of OA. Although chondrocytes also have the capacity to modulate their functional state in response to loading, the capacity of these cells to repair and modify their surrounding extracellular matrix is relatively limited in comparison to the adjacent subchondral bone. This differential adaptive capacity likely underlies the more rapid appearance of detectable skeletal changes in OA in comparison to the articular cartilage. The OA changes in periarticular bone include increases in subchondral cortical bone thickness, gradual decreases in subchondral trabeular bone mass, formation of marginal joint osteophytes, development of bone cysts and advancement of the zone of calcified cartilage between the articular cartilage and subchondral bone. The expansion of the zone of calcified cartilage contributes to overall thinning of the articular cartilage. The mechanisms involved in this process include the release of soluble mediators from chondrocytes in the deep zones of the articular cartilage and/or the influences of microcracks that have initiated focal remodeling in the calcified cartilage and subchondral bone in an attempt to repair the microdamage. There is the need for further studies to define the pathophysiological mechanisms involved in the interaction between subchondral bone and articular cartilage and for applying this information to the development of therapeutic interventions to improve the outcomes in patients with OA.
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Affiliation(s)
- Steven R Goldring
- The Hospital for Special Surgery, 535 East 70th Street, New York, USA
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Abstract
The classical view of the pathogenesis of osteoarthritis (OA) is that subchondral sclerosis is associated with, and perhaps causes, age-related joint degeneration. Recent observations have demonstrated that OA is associated with early loss of bone owing to increased bone remodelling, followed by slow turnover leading to densification of the subchondral plate and complete loss of cartilage. Subchondral densification is a late event in OA that involves only the subchondral plate and calcified cartilage; the subchondral cancellous bone beneath the subchondral plate may remain osteopenic. In experimental models, inducing subchondral sclerosis without allowing the prior stage of increased bone remodelling to occur does not lead to progressive OA. Therefore, both early-stage increased remodelling and bone loss, and the late-stage slow remodelling and subchondral densification are important components of the pathogenetic process that leads to OA. The apparent paradoxical observations that OA is associated with both increased remodelling and osteopenia, as well as decreased remodelling and sclerosis, are consistent with the spatial and temporal separation of these processes during joint degeneration. This Review provides an overview of current knowledge on OA and discusses the role of subchondral bone in the initiation and progression of OA. A hypothetical model of OA pathogenesis is proposed.
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Affiliation(s)
- David B Burr
- Department of Anatomy and Cell Biology, MS 5035, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
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Abstract
Osteoarthritis (OA), the most common form of arthritis, is now understood to involve all joint tissues, with active anabolic and catabolic processes. Knee OA in particular is considered to be a largely mechanically-driven disease. As bone adapts to loads by remodeling to meet its mechanical demands, bone alterations likely play an important role in OA development. Subchondral bone changes in bone turnover, mineralization, and volume result in altered apparent and material density of bone that may adversely affect the joint's biomechanical environment. Subchondral bone alterations such as bone marrow lesions (BMLs) and subchondral bone attrition (SBA) both tend to occur more frequently in the more loaded knee compartments, and are associated with cartilage loss in the same region. Recently, MRI-based 3D bone shape has been shown to track concurrently with and predict OA onset.The contributions of structural abnormalities to the clinical manifestations of knee OA are becoming better understood as well. While a structure-symptom discordance in knee OA is thought to exist, such observations do not take into account all potential factors that can contribute to between-person differences in the pain experience. Using novel methodology, pain fluctuation has been associated with changes in BMLs, synovitis and effusion. SBA has also been associated with knee pain, but the relationship of osteophytes to pain has been conflicting.Understanding the pathophysiologic sequences and consequences of OA pathology will guide rational therapeutic targeting. Importantly, rational treatment targets require understanding what structures contribute to pain as pain is the reason patients seek medical care.
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Affiliation(s)
- Tuhina Neogi
- Sections of Clinical Epidemiology Research and Training Unit, and Rheumatology, Department of Medicine, Boston University School of Medicine, 650 Albany Street, Suite X200, Clin Epi Unit, Boston, MA 02118, USA
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Abstract
Osteoarthritis (OA) is a chronic, debilitating joint disease characterized by degenerative changes to the bones, cartilage, menisci, ligaments, and synovial tissue. Imaging modalities such as radiography, magnetic resonance imaging (MRI), optical coherence tomography (OCT), and ultrasound (US) permit visualization of these structures and can evaluate disease onset and progression. Radiography is primarily useful for the assessment of bony structures, while OCT is used for evaluation of articular cartilage and US for ligaments and the synovium. MRI permits visualization of all intraarticular structures and pathologies, though US or OCT may be preferential in some circumstances. As OA is a disease of the whole joint, a combination of imaging techniques may be necessary in order to gain the most comprehensive picture of the disease state. This article is part of a Special Issue entitled "Osteoarthritis".
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Cross-sectional DXA and MR measures of tibial periarticular bone associate with radiographic knee osteoarthritis severity. Osteoarthritis Cartilage 2012; 20:686-93. [PMID: 22430052 PMCID: PMC3760173 DOI: 10.1016/j.joca.2012.03.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Revised: 03/08/2012] [Accepted: 03/13/2012] [Indexed: 02/02/2023]
Abstract
OBJECTIVE We evaluated the relationship of medial proximal tibial periarticular areal bone mineral density (paBMD) and trabecular morphometry and determined whether these bone measures differed across radiographic medial joint space narrowing (JSN) scores. METHODS 482 participants of the Osteoarthritis Initiative (OAI) Bone Ancillary Study had knee dual X-ray absorptiometry (DXA) and trabecular bone 3T magnetic resonance imaging (MRI) exams assessed at the same visit. Medial proximal tibial paBMD was measured on DXA and apparent trabecular bone volume fraction (aBV/TV), thickness (aTb.Th), number (aTb.N), and spacing (aTb.Sp) were determined from MR images. Radiographs were assessed for medial JSN scores (0-3). We evaluated associations between medial paBMD and trabecular morphometry. Whisker plots with notches of these measures versus medial JSN scores were generated and presented. RESULTS Mean age was 63.9 (9.2) years, BMI 29.6 (4.8) kg/m(2), and 53% were male. The Spearman correlation coefficients between DXA-measured medial paBMD and aBV/TV was 0.61 [95% confidence interval (CI) 0.55-0.66]; between paBMD and aTb.Th was 0.38 (95%CI 0.30-0.46); paBMD and aTb.N was 0.65 (95%CI 0.60-0.70); paBMD and aTb.Sp was -0.65 (95%CI -0.70 to -0.59). paBMD and the trabecular metrics were associated with medial JSN scores. CONCLUSION The moderate associations between periarticular trabecular bone density and morphometry and their relationship with greater severity of knee OA support hypotheses of remodeling and/or microscopic compression fractures in the natural history of OA. Longitudinal studies are needed to assess whether knee DXA will be a predictor of OA progression. Further characterization of the periarticular bone in OA utilizing complementary imaging modalities will help clarify OA pathophysiology.
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Haugen IK, Felson DT, Englund M, Wang K, Aliabadi P, Guermazi A, Roemer FW, Neogi T. The association between erosive hand osteoarthritis and subchondral bone attrition of the knee: the Framingham Osteoarthritis Study. Ann Rheum Dis 2012; 71:1698-701. [PMID: 22730369 DOI: 10.1136/annrheumdis-2012-201659] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To examine whether erosive hand osteoarthritis (OA) is associated with knee subchondral bone attrition (SBA) and systemic bone mineral density (BMD). METHODS Associations of MRI-defined knee SBA with radiographic erosive hand OA were evaluated in 1253 Framingham participants using logistic regression with generalised estimating equations. We also examined the association between the number of erosive OA finger joints and SBA adjusted for the number of non-erosive OA finger joints. Associations between erosive hand OA and femoral neck BMD were explored in 2236 participants with linear regression. Analyses were adjusted for age, sex and body mass index. RESULTS Participants with erosive hand OA had increased odds of knee SBA (OR=1.60, 95% CI 1.07 to 2.38). The relation between the number of erosive OA finger joints and SBA became non-significant when adjusted for the number of non-erosive OA joints as a proxy for the burden of disease. There was a non-significant trend towards higher BMD in erosive hand OA compared with participants without hand OA. CONCLUSIONS Erosive hand OA was associated with knee SBA, but the relation might be best explained by a heightened burden of disease. No significant relation of erosive hand OA with BMD was found.
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Affiliation(s)
- Ida Kristin Haugen
- Department of Rheumatology, Diakonhjemmet Hospital, P.O. Box 23, Vinderen, Oslo 0319, Norway.
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Xu L, Hayashi D, Roemer FW, Felson DT, Guermazi A. Magnetic resonance imaging of subchondral bone marrow lesions in association with osteoarthritis. Semin Arthritis Rheum 2012; 42:105-18. [PMID: 22542276 DOI: 10.1016/j.semarthrit.2012.03.009] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Revised: 03/13/2012] [Accepted: 03/18/2012] [Indexed: 01/16/2023]
Abstract
OBJECTIVES This nonsystematic literature review provides an overview of magnetic resonance imaging (MRI) of subchondral bone marrow lesions (BMLs) in association with osteoarthritis (OA), with particular attention to the selection of MRI sequences and semiquantitative scoring systems, characteristic morphology, and differential diagnosis. Histologic basis, natural history, and clinical significance are also briefly discussed. METHODS PubMed was searched for articles published up to 2011, using the keywords bone marrow lesion, osteoarthritis, magnetic resonance imaging, bone marrow edema, histology, pain, and subchondral. RESULTS BMLs in association with OA correspond to fibrosis, necrosis, edema, and bleeding of fatty marrow as well as abnormal trabeculae on histopathology. Lesions may fluctuate in size within a short time and are associated with the progression of articular cartilage loss and fluctuation of pain in knee OA. The characteristic subchondral edema-like signal intensity of BMLs should be assessed using T2-weighted, proton density-weighted, intermediate-weighted fat-suppressed fast spin echo or short tau inversion recovery. Several semiquantitative scoring systems are available to characterize and grade the severity of BMLs. Quantitative approaches have also been introduced. Differential diagnoses of degenerative BMLs include a variety of traumatic or nontraumatic pathologies that may appear similar to OA-related BMLs on MRI. CONCLUSIONS Subchondral BMLs are a common imaging feature of OA with clinical significance and typical signal alteration patterns, which can be assessed and graded by semiquantitative scoring systems using sensitive MRI sequences.
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Affiliation(s)
- Li Xu
- Department of Radiology, Boston University School of Medicine, Boston, MA, USA
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Huellner MW, Bürkert A, Schleich FS, Schürch M, Hug U, von Wartburg U, Strobel K, Veit-Haibach P. SPECT/CT versus MRI in patients with nonspecific pain of the hand and wrist - a pilot study. Eur J Nucl Med Mol Imaging 2012; 39:750-9. [PMID: 22237845 DOI: 10.1007/s00259-011-2034-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Accepted: 12/08/2011] [Indexed: 02/01/2023]
Abstract
BACKGROUND Hand and wrist pain is a diagnostic challenge for hand surgeons and radiologists due to the complex anatomy of the involved small structures. The American College of Radiology recommends MRI as the study of choice in patients with chronic wrist pain if radiographs are negative. Lately, state-of-the-art SPECT/CT systems have been introduced and may help in the diagnosis of this selected indication. MATERIALS AND METHODS This retrospective study included 21 patients with nonspecific pain of the hand/wrist. The diagnosis of nonspecific wrist pain was made by the referring hand surgeon based on patient history, clinical examination, plain radiography and clinical guidelines. All patients received planar early-phase imaging and late-phase SPECT/CT imaging as well as MRI. Lesions were divided into major (causative) and minor (not causative) pathologies according to clinical follow-up. Furthermore, oedema-like bone marrow changes seen on MRI were compared with focally increased tracer uptake seen on SPECT/CT images. RESULTS MRI yielded a quite high sensitivity (0.86), but a low specificity (0.20). In contrast, SPECT/CT yielded a high specificity (1.00) and a low sensitivity (0.71). Oedema-like bone marrow changes were detected in 15 lesions in 11 patients. In ten lesions with bone marrow oedema on MRI, foci of elevated tracer uptake were detected on SPECT/CT. Overall, MRI was more sensitive, but SPECT/CT was more specific in the evaluation of causative pathologies. CONCLUSION In this initial comparison, SPECT/CT showed higher specificity than MRI in the evaluation of causative pathologies in patients with nonspecific wrist pain. However, MRI was more sensitive. Thus, SPECT/CT was shown to be a useful problem-solving tool in the diagnostic work-up of these patients.
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Affiliation(s)
- Martin W Huellner
- Department of Radiology and Nuclear Medicine, Lucerne Cantonal Hospital, CH-6004 Lucerne, Switzerland.
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Abstract
Osteoarthritis (OA) has a considerable hereditary component and is considered to be a polygenic disease. Data derived from genetic analyses and genome-wide screening of individuals with this disease have revealed a surprising trend: genes associated with OA tend to be related to the process of synovial joint development. Mutations in these genes might directly cause OA. In addition, they could also determine the age at which OA becomes apparent, the joint sites involved, the severity of the disease and how rapidly it progresses. In this Review, I propose that genetic mutations associated with OA can be placed on a continuum. Early-onset OA is caused by mutations in matrix molecules often associated with chondrodysplasias, whereas less destructive structural abnormalities or mutations confer increased susceptibility to injury or malalignment that can result in middle-age onset. Finally, mutations in molecules that regulate subtle aspects of joint development and structure lead to late-onset OA. In this Review, I discuss the genetics of OA in general, but focus on the potential effect of genetic mutations associated with OA on joint structure, the role of joint structure in the development of OA--using hip abnormalities as a model--and how understanding the etiology of the disease could influence treatment.
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Menashe L, Hirko K, Losina E, Kloppenburg M, Zhang W, Li L, Hunter DJ. The diagnostic performance of MRI in osteoarthritis: a systematic review and meta-analysis. Osteoarthritis Cartilage 2012; 20:13-21. [PMID: 22044841 PMCID: PMC3934362 DOI: 10.1016/j.joca.2011.10.003] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Revised: 09/02/2011] [Accepted: 10/03/2011] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Osteoarthritis (OA) is currently diagnosed using clinical and radiographic findings. In recent years magnetic resonance imaging (MRI) use in OA has increasingly been studied. This study was conducted to determine the diagnostic utility of MRI in OA through a meta-analysis of published studies. METHODS A systematic literature search was undertaken to include studies that used MRI to evaluate or detect OA. MRI was compared to various reference standards: histology, arthroscopy, radiography, CT, clinical evaluation, and direct visual inspection. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and receiver operating characteristic (ROC) area under the curve (AUC) were calculated. Random-effects models were used to pool results. RESULTS Of 20 relevant studies identified from the literature, 16 reported complete data and were included in the meta-analysis, with a total of 1220 patients (1071 with OA and 149 without). Overall sensitivity from pooling data of all the included studies was 61% [95% confidence interval (CI) 53-68], specificity was 82% (95% CI 77-87), PPV was 85% (95% CI 80-88), and NPV was 57% (95% CI 43-70). The ROC showed an AUC of 0.804. There was significant heterogeneity in the above parameters (I(2)>83%). With histology as the reference standard, sensitivity increased to 74% and specificity decreased to 76% compared with all reference standards combined. When arthroscopy was used as the reference standard, sensitivity increased to 69% and specificity to 93% compared with all reference standards combined. CONCLUSION MRI can detect OA with an overall high specificity and moderate sensitivity when compared with various reference standards, thus lending more utility to ruling out OA than ruling it in. The sensitivity of MRI is below the current clinical diagnostic standards. At this time standard clinical algorithm for OA diagnosis, aided by radiographs appears to be the most effective method for diagnosing OA.
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Affiliation(s)
- Leo Menashe
- Tufts University School of Medicine, Boston MA ,Division of Research, New England Baptist Hospital, 125 Parker Hill
Ave Boston MA 02120.
| | - Kelly Hirko
- Division of Research, New England Baptist Hospital, 125 Parker Hill
Ave Boston MA 02120.
| | - Elena Losina
- Department of Orthopedic Surgery, Brigham and Women’s
Hospital, Department of Biostatistics, Boston University School of Public Health,
Boston, MA USA.
| | | | - Weiya Zhang
- Academic Rheumatology, the University of Nottingham, Clinical
Sciences Building, Nottingham City Hospital, Nottingham NG5, 1PB, United Kingdom
| | - Ling Li
- Division of Research, New England Baptist Hospital, 125 Parker Hill
Ave Boston MA 02120.
| | - David J. Hunter
- Division of Research, New England Baptist Hospital, 125 Parker Hill
Ave Boston MA 02120. ,Northern Clinical School, The University of Sydney, Sydney,
Australia.
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Crema MD, Roemer FW, Guermazi A. Magnetic Resonance Imaging in Knee Osteoarthritis Research: Semiquantitative and Compositional Assessment. Magn Reson Imaging Clin N Am 2011; 19:295-321. [DOI: 10.1016/j.mric.2011.02.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Systematic review of the concurrent and predictive validity of MRI biomarkers in OA. Osteoarthritis Cartilage 2011; 19:557-88. [PMID: 21396463 PMCID: PMC3268360 DOI: 10.1016/j.joca.2010.10.029] [Citation(s) in RCA: 148] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Revised: 09/14/2010] [Accepted: 10/17/2010] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To summarize literature on the concurrent and predictive validity of MRI-based measures of osteoarthritis (OA) structural change. METHODS An online literature search was conducted of the OVID, EMBASE, CINAHL, PsychInfo and Cochrane databases of articles published up to the time of the search, April 2009. 1338 abstracts obtained with this search were preliminarily screened for relevance by two reviewers. Of these, 243 were selected for data extraction for this analysis on validity as well as separate reviews on discriminate validity and diagnostic performance. Of these 142 manuscripts included data pertinent to concurrent validity and 61 manuscripts for the predictive validity review. For this analysis we extracted data on criterion (concurrent and predictive) validity from both longitudinal and cross-sectional studies for all synovial joint tissues as it relates to MRI measurement in OA. RESULTS Concurrent validity of MRI in OA has been examined compared to symptoms, radiography, histology/pathology, arthroscopy, CT, and alignment. The relation of bone marrow lesions, synovitis and effusion to pain was moderate to strong. There was a weak or no relation of cartilage morphology or meniscal tears to pain. The relation of cartilage morphology to radiographic OA and radiographic joint space was inconsistent. There was a higher frequency of meniscal tears, synovitis and other features in persons with radiographic OA. The relation of cartilage to other constructs including histology and arthroscopy was stronger. Predictive validity of MRI in OA has been examined for ability to predict total knee replacement (TKR), change in symptoms, radiographic progression as well as MRI progression. Quantitative cartilage volume change and presence of cartilage defects or bone marrow lesions are potential predictors of TKR. CONCLUSION MRI has inherent strengths and unique advantages in its ability to visualize multiple individual tissue pathologies relating to pain and also predict clinical outcome. The complex disease of OA which involves an array of tissue abnormalities is best imaged using this imaging tool.
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Hunter DJ, Zhang W, Conaghan PG, Hirko K, Menashe L, Reichmann WM, Losina E. Responsiveness and reliability of MRI in knee osteoarthritis: a meta-analysis of published evidence. Osteoarthritis Cartilage 2011; 19:589-605. [PMID: 21396465 PMCID: PMC3625963 DOI: 10.1016/j.joca.2010.10.030] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Revised: 10/15/2010] [Accepted: 10/17/2010] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To summarize literature on the responsiveness and reliability of MRI-based measures of knee osteoarthritis (OA) structural change. METHODS A literature search was conducted using articles published up to the time of the search, April 2009. 1338 abstracts obtained with this search were preliminarily screened for relevance and of these, 243 were selected for data extraction. For this analysis we extracted data on reliability and responsiveness for every reported synovial joint tissue as it relates to MRI measurement in knee OA. Reliability was defined by inter- and intra-reader intra-class correlation (ICC), or coefficient of variation, or kappa statistics. Responsiveness was defined as standardized response mean (SRM) - ratio of mean of change over time divided by standard deviation of change. Random-effects models were used to pool data from multiple studies. RESULTS The reliability analysis included data from 84 manuscripts. The inter-reader and intra-reader ICC were excellent (range 0.8-0.94) and the inter-reader and intra-reader kappa values for quantitative and semi-quantitative measures were all moderate to excellent (range 0.52-0.88). The lowest value (kappa=0.52) corresponded to semi-quantitative synovial scoring intra-reader reliability and the highest value (ICC=0.94) for semi-quantitative cartilage morphology. The responsiveness analysis included data from 42 manuscripts. The pooled SRM for quantitative measures of cartilage morphometry for the medial tibiofemoral joint was -0.86 (95% confidence intervals (CI) -1.26 to -0.46). The pooled SRM for the semi-quantitative measurement of cartilage morphology for the medial tibiofemoral joint was 0.55 (95% CI 0.47-0.64). For the quantitative analysis, SRMs are negative because the quantitative value, indicating a loss of cartilage, goes down. For the semi-quantitative analysis, SRMs indicating a loss in cartilage are positive (increase in score). CONCLUSION MRI has evolved substantially over the last decade and its strengths include the ability to visualize individual tissue pathologies, which can be measured reliably and with good responsiveness using both quantitative and semi-quantitative techniques.
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Affiliation(s)
- D J Hunter
- Rheumatology Department, Royal North Shore Hospital and Northern Clinical School, University of Sydney, Sydney, NSW, Australia.
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