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1.
Ann Rheum Dis ; 72(6): 804-14, 2013 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-23520036

RESUMEN

OBJECTIVE: To develop evidence-based recommendations on the use of imaging of the joints in the clinical management of rheumatoid arthritis (RA). METHODS: The task force comprised an expert group of rheumatologists, radiologists, methodologists and experienced rheumatology practitioners from 13 countries. Thirteen key questions on the role of imaging in RA were generated using a process of discussion and consensus. Imaging modalities included were conventional radiography, ultrasound, MRI, CT, dual-emission x-ray absorptiometry, digital x-ray radiogrammetry, scintigraphy and positron emission tomography. Research evidence was searched systematically for each question using MEDLINE, EMBASE and Cochrane CENTRAL. The experts used the evidence obtained from the relevant studies to develop a set of 10 recommendations. The strength of recommendation was assessed using a visual analogue scale. RESULTS: A total of 6888 references was identified from the search process, from which 199 studies were included in the systematic review. Ten recommendations were produced encompassing the role of imaging in making a diagnosis of RA, detecting inflammation and damage, predicting outcome and response to treatment, monitoring disease activity, progression and remission. The strength of recommendation for each proposition varied according to both the research evidence and expert opinion. CONCLUSIONS: Ten key recommendations for the role of imaging in the management of RA were developed using research-based evidence and expert opinion.


Asunto(s)
Artritis Reumatoide/diagnóstico , Artrografía , Medicina Basada en la Evidencia , Humanos , Articulaciones/diagnóstico por imagen , Articulaciones/patología , Imagen por Resonancia Magnética , Cintigrafía , Ultrasonografía
2.
J Rheumatol Suppl ; 90: 62-73, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22942332

RESUMEN

OBJECTIVE: To systematically review the literature on the safety of using nonsteroidal antiinflammatory drugs (NSAID) and/or paracetamol in people receiving methotrexate (MTX) for inflammatory arthritis (IA), as an evidence base for generating clinical practice recommendations. METHODS: A systematic literature review was performed using the Cochrane Library, Medline, Embase, and conference proceedings for the American College of Rheumatology (ACR) and European League Against Rheumatism (EULAR) for 2008-2009. The search aimed to identify studies describing adverse events (AE) with the concurrent use of paracetamol and/or NSAID in people taking MTX for IA. Articles fulfilling our predefined inclusion criteria were systematically reviewed and quality appraised. RESULTS: Seventeen publications out of 8681 identified studies were included in the review, all of which included people with rheumatoid arthritis (RA) using various NSAID; there were no identified studies for other forms of IA or with paracetamol. Of the studies examining concurrent use of MTX and NSAID, there were no reported adverse effects on lung, liver, or renal function, and no increase in MTX withdrawal or in major toxic reactions. However, transient thrombocytopenia was demonstrated in 1 study. Looking at specific NSAID, there were no clinically significant AE with concomitant piroxicam or etodolac, and only mild AE with celecoxib or etoricoxib. Antiinflammatory dose aspirin was demonstrated to have an adverse effect on liver and renal function. CONCLUSION: In the management of RA, concurrent use of NSAID with MTX appears to be safe, provided appropriate monitoring is performed. The use of antiinflammatory doses of aspirin should be avoided.


Asunto(s)
Acetaminofén/efectos adversos , Analgésicos no Narcóticos/efectos adversos , Antiinflamatorios no Esteroideos/efectos adversos , Antirreumáticos/uso terapéutico , Artritis/tratamiento farmacológico , Metotrexato/uso terapéutico , Manejo del Dolor/métodos , Dolor/tratamiento farmacológico , Antiinflamatorios no Esteroideos/farmacocinética , Artritis/complicaciones , Artritis/fisiopatología , Aspirina/farmacocinética , Contraindicaciones , Interacciones Farmacológicas , Monitoreo de Drogas , Quimioterapia Combinada , Medicina Basada en la Evidencia , Testimonio de Experto , Humanos , Cooperación Internacional , Metotrexato/farmacocinética , Dolor/etiología , Dolor/fisiopatología , Ensayos Clínicos Controlados Aleatorios como Asunto
3.
J Rheumatol Suppl ; 90: 81-4, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22942334

RESUMEN

BACKGROUND: Pain in inflammatory arthritis (IA) is common and often multifactorial, and many different pharmacotherapeutic agents are routinely used for pain management. There are concerns that some current pain pharmacotherapies may increase the risk of adverse events in patients with concurrent cardiovascular (CV) or renal disease. METHODS: A systematic literature review was performed searching Medline, Embase, Cochrane Central Register of Controlled Trials, DARE, and Cochrane Database of Systematic Reviews. We also hand-searched conference proceedings for the American College of Rheumatology and the European League Against Rheumatism for 2008-2009. RESULTS: Our search identified 4782 studies, of which 190 were included for detailed review, but none met the inclusion criteria for our review. We identified 1 study of etoricoxib and diclofenac in non-IA populations [osteoarthritis (OA) or mixed OA and rheumatoid arthritis]. In that study, the presence of CV disease increased the likelihood of a further CV event 3-fold. Patients with 2 or more CV risk factors showed a 2-fold increased likelihood of adverse CV events. CONCLUSION: Our review has highlighted a lack of specific evidence to guide clinicians in the management of pain in patients with IA and coexistent CV or renal disease. In the absence of this evidence, we suggest clinicians use nonsteroidal antiinflammatory drugs (NSAID) with caution in patients with preexisting CV disease or ≥ 2 CV risk factors. There is currently no evidence to advise clinicians considering other pain pharmacotherapies in the context of CV comorbidities. Current guidelines regarding the use of NSAID and opioids in moderate to severe renal impairment should also be applied to the IA population.


Asunto(s)
Analgésicos/uso terapéutico , Artritis Reumatoide/tratamiento farmacológico , Enfermedades Cardiovasculares , Enfermedades Renales , Manejo del Dolor/métodos , Dolor/tratamiento farmacológico , Analgésicos/efectos adversos , Analgésicos Opioides/uso terapéutico , Antiinflamatorios no Esteroideos/efectos adversos , Antiinflamatorios no Esteroideos/uso terapéutico , Artritis Reumatoide/complicaciones , Artritis Reumatoide/fisiopatología , Enfermedades Cardiovasculares/complicaciones , Humanos , Enfermedades Renales/complicaciones , Dolor/etiología , Dolor/fisiopatología , Pautas de la Práctica en Medicina
4.
Rheumatology (Oxford) ; 51(10): 1870-6, 2012 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-22763991

RESUMEN

OBJECTIVE: Interstitial lung disease (ILD) is an important feature of idiopathic inflammatory myositis (IIM). Factors associated with its development and progression remain incompletely understood. The authors report ethnicity differences and lung function trends that characterize the predilection for and natural history of ILD in a group of British patients with IIM. METHODS: A 10-year retrospective analysis of patients with IIM at two hospitals was conducted. Demographic, clinico-radiological and laboratory features of cases with and without ILD were compared. Serial pulmonary function tests, including measurements of forced vital capacity, volume and diffusing capacity for carbon monoxide, were used to identify longitudinal patterns of lung disease. RESULTS: A total of 107 patients with IIM were identified. ILD was present in 37.4%, with non-specific interstitial pneumonia being the most common radiological pattern (75%). ILD was more common in IIM patients of Black ethnicity (OR 3.42), and in cases where ANA (OR 3.06) and anti-histidyl-tRNA synthetase (OR 3.2) antibodies were detected. In the ILD cohort, 50% deteriorated, defined as a drop in diffusing capacity of the lung for carbon monoxide by <15% or forced vital capacity <10% during the study period, occurring in all within a year of onset of ILD and significantly more frequently in those with a synchronous onset of IIM and ILD. Black ethnicity was not associated with poor lung function outcome. CONCLUSION: In IIM, the risk of developing ILD is significantly higher in patients of Black ethnicity. Progressive lung damage occurs in an appreciable subgroup of patients with IIM-ILD, heralded by functional lung decline at 1 year despite systemic immunomodulatory treatment.


Asunto(s)
Enfermedades Pulmonares Intersticiales/etnología , Pulmón/fisiopatología , Miositis/etnología , Adulto , Anciano , Autoanticuerpos/sangre , Autoanticuerpos/inmunología , Inglaterra/epidemiología , Femenino , Histidina-ARNt Ligasa/inmunología , Humanos , Enfermedades Pulmonares Intersticiales/inmunología , Enfermedades Pulmonares Intersticiales/fisiopatología , Masculino , Persona de Mediana Edad , Miositis/inmunología , Miositis/fisiopatología , Prevalencia , Pruebas de Función Respiratoria , Estudios Retrospectivos
5.
Rheumatology (Oxford) ; 51(8): 1416-25, 2012 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-22447886

RESUMEN

OBJECTIVE: To develop evidence-based recommendations for pain management by pharmacotherapy in patients with inflammatory arthritis (IA). METHODS: A total of 453 rheumatologists from 17 countries participated in the 2010 3e (Evidence, Expertise, Exchange) Initiative. Using a formal voting process, 89 rheumatologists representing all 17 countries selected 10 clinical questions regarding the use of pain medications in IA. Bibliographic fellows undertook a systematic literature review for each question, using MEDLINE, EMBASE, Cochrane CENTRAL and 2008-09 European League Against Rheumatism (EULAR)/ACR abstracts. Relevant studies were retrieved for data extraction and quality assessment. Rheumatologists from each country used this evidence to develop a set of national recommendations. Multinational recommendations were then formulated and assessed for agreement and the potential impact on clinical practice. RESULTS: A total of 49,242 references were identified, from which 167 studies were included in the systematic reviews. One clinical question regarding different comorbidities was divided into two separate reviews, resulting in 11 recommendations in total. Oxford levels of evidence were applied to each recommendation. The recommendations related to the efficacy and safety of various analgesic medications, pain measurement scales and pain management in the pre-conception period, pregnancy and lactation. Finally, an algorithm for the pharmacological management of pain in IA was developed. Twenty per cent of rheumatologists reported that the algorithm would change their practice, and 75% felt the algorithm was in accordance with their current practice. CONCLUSIONS: Eleven evidence-based recommendations on the management of pain by pharmacotherapy in IA were developed. They are supported by a large panel of rheumatologists from 17 countries, thus enhancing their utility in clinical practice.


Asunto(s)
Analgésicos/uso terapéutico , Artritis/tratamiento farmacológico , Manejo del Dolor , Dolor/tratamiento farmacológico , Algoritmos , Analgésicos/efectos adversos , Medicina Basada en la Evidencia , Testimonio de Experto , Femenino , Humanos , Embarazo , Resultado del Tratamiento
6.
Cochrane Database Syst Rev ; (11): CD008872, 2011 Nov 09.
Artículo en Inglés | MEDLINE | ID: mdl-22071858

RESUMEN

BACKGROUND: Methotrexate is routinely used in the treatment of inflammatory arthritis. There have been concerns regarding the safety of using concurrent non-steroidal anti-inflammatory drugs (NSAIDs), including aspirin, or paracetamol (acetaminophen), or both, in these people. OBJECTIVES: To systematically appraise and summarise the scientific evidence on the safety of using NSAIDs, including aspirin, or paracetamol, or both, with methotrexate in inflammatory arthritis; and to identify gaps in the current evidence, assess the implications of those gaps and to make recommendations for future research to address these deficiencies. SEARCH METHODS: We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library, second quarter 2010); MEDLINE (from 1950); EMBASE (from 1980); the Cochrane Database of Systematic Reviews (CDSR) and the Database of Abstracts of Reviews of Effects (DARE). We also handsearched the conference proceedings for the American College of Rheumatology (ACR) and European League against Rheumatism (EULAR) (2008 to 2009) and checked the websites of regulatory agencies for reported adverse events, labels and warnings. SELECTION CRITERIA: Randomised controlled trials and non-randomised studies comparing the safety of methotrexate alone to methotrexate with concurrent NSAIDs, including aspirin, or paracetamol, or both, in people with inflammatory arthritis. DATA COLLECTION AND ANALYSIS: Two authors independently assessed the search results, extracted data and assessed the risk of bias of the included studies. MAIN RESULTS: Seventeen publications out of 8681 identified studies were included in the review, all of which included people with rheumatoid arthritis using various NSAIDs, including aspirin. There were no identified studies for other forms of inflammatory arthritis.For NSAIDs, 13 studies were included that used concurrent NSAIDs, of which nine studies examined unspecified NSAIDs. The mean number of participants was 150.4 (range 19 to 315), mean duration 2182.9 (range 183 to 5490) days, although the study duration was not always clearly defined, and the studies were mainly of low to moderate quality. Two of these studies reported no evidence for increased risk of methotrexate-induced pulmonary disease; one study assessed the effect of concurrent NSAIDs on renal function and found no adverse effect; one study identified no adverse effect on liver function; three studies demonstrated no increase in methotrexate withdrawal; and one study showed no increase in all adverse events, including major toxic reactions. However, transient thrombocytopenia was demonstrated in one study, specifically when NSAIDs were taken on the same week day as methotrexate. This study was a retrospective review that involved small numbers only and was of moderate quality; these finding have not been replicated since.Four studies looked at specific NSAIDs (etodolac, piroxicam, celecoxib and etoricoxib), with a mean number of participants of 25.8 (range 14 to 50) and mean study duration of 16.8 (range 14 to 23) days. These studies were mainly of moderate quality. The studies were primarily pharmacokinetic studies but also reported adverse events as secondary outcomes. There were no clinically significant adverse effects with concomitant piroxicam or etodolac; and only mild adverse events with celecoxib or etoricoxib, such as nausea and vomiting, and headaches.For aspirin, seven studies provided data on adverse events with the use of aspirin and methotrexate. These studies included a mean number of participants of 100 (range 11 to 232), had a mean duration of 1325 (range 8 to 2928) days and were mainly of low to moderate quality. Two of the studies reported no evidence for increased risk of methotrexate-induced pulmonary disease and two studies showed no increase in all adverse events including major toxic reactions; however, none of these studies specified the dose of aspirin that was used. One study demonstrated that concurrent aspirin adversely affected liver function at a mean dose of 6.84 tablets of aspirin per day, which is a possible daily dose of 2.1 g presuming that 300 mg aspirin tablets were given. A further study described a partially reversible decline in renal function with 2 g daily of aspirin. One study reported no increase in adverse events with 975 g aspirin daily, however the study duration was only one week.For paracetamol, no studies were identified for inclusion. AUTHORS' CONCLUSIONS: In the management of rheumatoid arthritis, the concurrent use of NSAIDs with methotrexate appears to be safe provided appropriate monitoring is performed. The use of anti-inflammatory doses of aspirin should be avoided.


Asunto(s)
Antiinflamatorios no Esteroideos/efectos adversos , Antirreumáticos/efectos adversos , Metotrexato/efectos adversos , Espondiloartritis/tratamiento farmacológico , Acetaminofén/efectos adversos , Artritis Psoriásica/tratamiento farmacológico , Artritis Reumatoide/tratamiento farmacológico , Aspirina/efectos adversos , Interacciones Farmacológicas , Quimioterapia Combinada/efectos adversos , Quimioterapia Combinada/métodos , Humanos , Ensayos Clínicos Controlados Aleatorios como Asunto , Espondilitis Anquilosante/tratamiento farmacológico
7.
Cochrane Database Syst Rev ; (10): CD008952, 2011 Oct 05.
Artículo en Inglés | MEDLINE | ID: mdl-21975789

RESUMEN

BACKGROUND: Pain in rheumatoid arthritis is common, is often multi-factorial and many different pharmacotherapeutic agents are routinely used for pain management. There are concerns that some of the pain pharmacotherapies currently used may increase the risk of adverse events in people with rheumatoid arthritis and concurrent cardiovascular or renal disease. OBJECTIVES: To systematically assess and collate the scientific evidence on the efficacy and safety of using pain pharmacotherapy in people with rheumatoid arthritis and cardiovascular or renal comorbidities. SEARCH STRATEGY: We searched the Cochrane Central Register of Controlled Trials (CENTRAL, The Cochrane Library 2010, Issue 4); MEDLINE, from 1950; EMBASE, from 1980; the Cochrane Database of Systematic Reviews (CDSR) and the Database of Abstracts of Reviews of Effects (DARE). We also handsearched the conference proceedings for American College of Rheumatology (ACR) and European League against Rheumatism (EULAR) for 2008-09, and checked the websites of regulatory agencies for reported adverse events, labels and warnings. SELECTION CRITERIA: We considered randomised controlled trials and non-randomised studies comparing the efficacy and safety of pain pharmacotherapies in patients with rheumatoid arthritis, with and without comorbid cardiovascular or renal conditions.In addition, we also considered controlled before-after studies, interrupted time series, cohort and case control studies and case series (N ≥ 20) to assess safety.For the purpose of our review, pain pharmacotherapy was defined as including simple analgesics (such as paracetamol), non-steroidal anti-inflammatory drugs (NSAIDs), opioids or opioid-like drugs (such as tramadol), and neuromodulators (including anti-depressants, anti-convulsants, and muscle relaxants). DATA COLLECTION AND ANALYSIS: Two review authors independently assessed the search results and planned to extract data and appraise the risk of bias of included studies. MAIN RESULTS: We did not identify any studies meeting our inclusion criteria. Many of the trials of NSAIDs explicitly excluded patients with cardiovascular or renal comorbidities.We did identify one trial that reported evidence in mixed populations (including both rheumatoid arthritis and osteoarthritis) taking either diclofenac or etoricoxib. In this study, the presence of cardiovascular disease increased the likelihood of a further cardiovascular event three-fold. Patients with two or more cardiovascular comorbidities showed a two-fold increased likelihood of adverse cardiovascular events. AUTHORS' CONCLUSIONS: There were no trials that specifically compared the efficacy and safety of pain pharmacotherapies for patients with rheumatoid arthritis, with and without comorbid cardiovascular or renal conditions.In the absence of specific evidence in rheumatoid arthritis, current guidelines recommend that NSAIDs be used with caution in the general rheumatoid arthritis population while highlighting the added need for extra vigilance in patients with established cardiovascular disease or risk factors for its development. Current guidelines regarding the use of NSAIDs and opioids in moderate to severe renal impairment should also be applied to the rheumatoid arthritis population.Further research is required to guide clinicians when treating pain in rheumatoid arthritis.


Asunto(s)
Artritis Reumatoide/complicaciones , Artritis Reumatoide/tratamiento farmacológico , Enfermedades Cardiovasculares/complicaciones , Enfermedades Renales/complicaciones , Dolor/tratamiento farmacológico , Antiinflamatorios no Esteroideos/efectos adversos , Humanos , Dolor/etiología
9.
Rheumatology (Oxford) ; 50(3): 518-31, 2011 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-21071477

RESUMEN

OBJECTIVES: RA is associated with early ischaemic heart disease. This appears to be driven largely by the presence of chronic inflammation. Studies suggest that treatment with disease-modifying drugs such as MTX may reduce the incidence of cardiovascular events in RA. Anti-TNF therapies significantly reduce inflammation in RA. However, the extent to which these agents also reduce cardiovascular disease (CVD) is uncertain. The purpose of this study was to explore the effect of anti-TNF agents on CVD in RA using a systematic literature review. METHODS: We searched for studies of adults with RA treated with TNF antagonists where cardiovascular outcomes were recorded using MEDLINE, EMBASE, Cochrane Database, Database of Abstracts and Reviews of Effects, Health Technology Appraisal, Science Citation Index and Clinical Evidence from 1989 to 2010. Conference proceedings for the British Society of Rheumatology, ACR and EULAR between 2005 and 2009 were hand searched. Two reviewers assessed abstracts for inclusion and then quality of selected papers was assessed. RESULTS: A total of 1840 abstracts were identified and 20 articles were suitable for inclusion. Information was obtained on the effect of TNF antagonists on overall CVD events, myocardial infarction, strokes and heart failure. CONCLUSION: In many studies, TNF antagonists appear to reduce the likelihood of CVD in individuals with RA. Reassuringly, there does not appear to be an increased risk of cardiac failure. However, the reduction in CVD is not as consistently seen as with studies of MTX.


Asunto(s)
Artritis Reumatoide/tratamiento farmacológico , Enfermedades Cardiovasculares/prevención & control , Linfotoxina beta/antagonistas & inhibidores , Adulto , Antirreumáticos/uso terapéutico , Artritis Reumatoide/complicaciones , Enfermedades Cardiovasculares/complicaciones , Humanos , Factores de Riesgo , Resultado del Tratamiento
10.
J Clin Rheumatol ; 16(2): 74-5, 2010 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-20130477

RESUMEN

We report a culture-proven case of Mycobacterium bovis discitis in a 67-year-old man who had received intravesical Bacillus Calmette-Guérin for bladder cancer 5 years previously. He presented with severe low back pain, and imaging revealed features of discitis and paraspinal abscesses. On aspiration of the abnormal tissue, culture confirmed infection with M. bovis. Quadruple antituberculous therapy was commenced at this stage, with a subsequent good clinical response. Hematogenous spread of M. bovis is a rare, often delayed, complication of intravesical BCG therapy, but early appropriate treatment can result in a good prognosis.


Asunto(s)
Vacuna BCG/efectos adversos , Discitis/microbiología , Vértebras Lumbares/microbiología , Mycobacterium bovis/aislamiento & purificación , Tuberculosis/diagnóstico , Neoplasias de la Vejiga Urinaria/terapia , Administración Intravesical , Anciano , Antituberculosos/uso terapéutico , Vacuna BCG/administración & dosificación , Quimioterapia Combinada , Humanos , Imagen por Resonancia Magnética , Masculino , Tuberculosis/tratamiento farmacológico
11.
Rheumatology (Oxford) ; 49(2): 295-307, 2010 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-19946022

RESUMEN

OBJECTIVES: Patients with RA have an increased prevalence of cardiovascular disease (CVD). This is due to traditional risk factors and the effects of chronic inflammation. MTX is the first-choice DMARD in RA. We performed a systematic literature review to determine whether MTX affects the risk of CVD in patients with RA. METHODS: We searched Medline, Embase, Cochrane database, database of abstracts of reviews of effects, health technology assessment and Science Citation Index from 1980 to 2008. Conference proceedings (British Society of Rheumatology, ACR and EULAR) were searched from 2005 to 2008. Papers were included if they assessed the relationship between MTX use and CVD in patients with RA. Two reviewers independently assessed each title and abstract for relevance and quality. RESULTS: A total of 2420 abstracts were identified, of which 18 fulfilled the inclusion criteria. Two studies assessed the relationship between MTX use and CVD mortality, one demonstrated a significant reduction in CVD mortality and the second a trend towards reduction. Five studies considered all-cause CVD morbidity. Four demonstrated a significant reduction in CVD morbidity and the fifth a trend towards reduction. MTX use in the year prior to the development of RA decreased the risk of CVD for 3-4 years. Four studies considered myocardial infarction, one demonstrated a decreased risk and three a trend towards decreased risk with MTX use. CONCLUSION: The current evidence suggests that MTX use is associated with a reduced risk of CVD events in patients with RA. This suggests that reducing the inflammation in RA using MTX not only improves disease-specific outcomes but may also reduce collateral damage such as atherosclerosis.


Asunto(s)
Antirreumáticos/uso terapéutico , Artritis Reumatoide/tratamiento farmacológico , Enfermedades Cardiovasculares/prevención & control , Inmunosupresores/uso terapéutico , Metotrexato/uso terapéutico , Artritis Reumatoide/complicaciones , Artritis Reumatoide/epidemiología , Enfermedades Cardiovasculares/epidemiología , Enfermedades Cardiovasculares/etiología , Humanos , Resistencia a la Insulina/fisiología , Lípidos/sangre
12.
Knee ; 16(1): 42-5, 2009 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-18790641

RESUMEN

The gold standard for measuring knee alignment is mechanical axis determined using full-limb radiographs (FLR). Measurement of joint alignment using antero-posterior (AP) knee radiographs is more accessible, economical and involves less radiation exposure to the patient compared with using full-limb radiographs. The aim of this study was to compare and assess the reproducibility of knee joint axial alignment on full-limb radiographs and conventional AP knee radiographs. Knee alignment was measured in 40 subjects (80 knees) from the TwinsUK registry. Measurement of mechanical knee alignment was from FLR, and anatomic knee alignment from weight-bearing AP knee radiographs. Reproducibility was assessed by intra-class correlation coefficients and kappa statistics. Reproducibility of knee alignment for both methods was good, with intra-observer ICC's of 0.99 for both FLR and AP radiographs. The mean alignment angle on FLR was 178.9 degrees (SD 2.1, range 173-183 degrees ), and 179.0 degrees (SD 2.1, range 173-185 degrees ) on AP films. 58.8% of knees on FLR and 66.3% on AP films were of varus alignment. Good correlations were seen between results for FLR and AP radiographs, with ICC ranging from 0.87-0.92 for left and right knees, and kappa statistics of 0.65-0.74. Standard AP knee radiographs can be used to measure knee alignment with good reproducibility, and provide comparable results to those obtained from FLR. This will facilitate measurement of knee alignment in existing cohort studies to assess malalignment as a risk factor of incident OA, and in clinical practice.


Asunto(s)
Artrografía/métodos , Articulación de la Rodilla/diagnóstico por imagen , Fenómenos Biomecánicos , Femenino , Humanos , Articulación de la Rodilla/fisiopatología , Persona de Mediana Edad
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