Prashansanie Hettihewa Akalanka, Gunawardena Nalika S, Atukorala Inoshi, Hassan Fazliya, Lekamge Indra N, Hunter David J
Faculty of Medicine, University of Colombo, Colombo, Sri Lanka.
National Hospital of Sri Lanka, Colombo, Sri Lanka.
Int J Rheum Dis. 2018 Feb;21(2):394-401. doi: 10.1111/1756-185X.13225. Epub 2017 Dec 5.
Prevalence of knee osteoarthritis (KOA) has not been assessed in Sri Lanka, since 2006. This study aimed to determine the prevalence of clinical KOA and radiographic KOA and to assess the severity of it, among adult females of a suburban setting in Sri Lanka.
A cross-sectional survey was conducted among a representative sample of 666 females aged 50 years or more resident in Pita Kotte Medical Officer of Health area. Four physiotherapy graduates applied American College of Rheumatology (ACR) criteria by performing the clinical assessment in the households. Participants with clinical knee osteoarthritis were referred for radiography to identify radiographic osteoarthritis and to assess severity. Age standardized prevalence of clinical KOA for Sri Lanka was estimated based on population statistics of 2001 Census.
Study included 666 adult females with a response rate of 99.4%. The mean age was 63.3 years (±9.29 years). A total of 134 were found to satisfy ACR criteria resulting in a crude prevalence of clinical KOA of 20.1% (95% CI 17.0%-23.2%). Estimated age standardized prevalence of clinical KOA for Sri Lanka was 21.8% (95% CI 21.7-21.9). Among those with clinical KOA 58.9% showed radiographic KOA and the prevalence of moderate/severe KOA among those with clinical KOA was 29.9%.
Prevalence of clinical KOA among the adult females over 50 years was high with considerable proportion of them being moderate /severe KOA. These findings should be used to advice the health authorities regarding improving preventive and curative services for KOA.
自2006年以来，斯里兰卡尚未对膝关节骨关节炎（KOA）的患病率进行评估。本研究旨在确定斯里兰卡一个郊区成年女性中临床KOA和影像学KOA的患病率，并评估其严重程度。
对居住在皮塔科特卫生区的666名50岁及以上女性的代表性样本进行了横断面调查。四名物理治疗专业毕业生通过在家庭中进行临床评估来应用美国风湿病学会（ACR）标准。患有临床膝关节骨关节炎的参与者被转诊进行放射照相，以确定影像学骨关节炎并评估严重程度。根据2001年人口普查的人口统计数据，估计了斯里兰卡临床KOA的年龄标准化患病率。
研究纳入了666名成年女性，应答率为99.4%。平均年龄为63.3岁（±9.29岁）。共有134人被发现符合ACR标准，临床KOA的粗患病率为20.1%（95%CI 17.0%-23.2%）。斯里兰卡临床KOA的估计年龄标准化患病率为21.8%（95%CI 21.7-21.9）。在患有临床KOA者中，58.9%表现为影像学KOA，在患有临床KOA者中，中度/重度KOA的患病率为29.9%。
50岁以上成年女性中临床KOA的患病率较高，其中相当一部分为中度/重度KOA。这些发现应用于就改善KOA的预防和治疗服务向卫生当局提供建议。
