| Objective:Through this investigation,provid the attack rate,epidemiological properties, relative factors date of osteoarthritis in the middle-aged and elderly people of Fuzhou city.In the same time,provid the recognition to potential risk factors of OA.In order to discover the disease in the moming,implement the purpose of "discover in the morning,diagnosis in the morning,treatment in the morning",and provide evidence to OA for prevetion and treatment of Traditional Chinese Medicine.Methods:On the basis of informed consents that were obtained from all the participants in this survey,implement cross sectional survey of spot.From May to November 2007,2800 patients and their accompnies in the second pepole hospital affiliated to Fujian University of Traditional Chinese Medicine and the capital hospital of Fuzhou in Nanjing Military Region, which are above 40-years-old,have been living in Fuzhou for a long time,were selected randomly.Orthopaedic surgeons who had been trained uniformly were responsible for field survey and filling in questionnaire of OA.SPSS 13.0 software package was used for Chi-square test and logistic regression analysis.Results:1.The total prevalence of OA in middle-aged and elderly people of Fuzhou city is 35.87%,the prevalence of knee OA is the highest,followed by lumbar OA and hand OA,the prevalence is 23.23%,15.41%and 2.39%respectively.2.The prevalence of OA in male and female is 28.77%and 41.98%respectively,the prevalence of female is higher than that of male.The ratio is 1.46:1,the female are easier to have OA.3.Between osteoarthritis population and non-osteoarthritis population,there is a remarkable difference of prevalence in various ages.The prevalence of OA increased with age. Age increasing is a risk factor of OA.4.The prevalence of OA in obesity population and non-obesity population is 47.20% and 34.83%respectively.The intensity exposure to obesity in osteoarthritis population is higher than non-osteoarthritis population,obesity is positive correlated with OA.5.The prevalence of OA in the population who have family history of OA and have not is 45.12%and 35.94%respectively.There is a remarkable difference of prevalence between osteoarthritis population and non-osteoarthritis population in distribution of genetic factor. The population who have family history of OA have higher probability to have OA.6.The prevalence of OA in the population who have trauma of bone and joint and have not is 47.83%and 36.45%respectively.There is a remarkable difference of prevalence between osteoarthritis population and non-osteoarthritis population in distribution of trauma of bone and joint.The intensity exposure to trauma of bone and joint in osteoarthritis population is higher than that of non-osteoarthritis population.Trauma of bone and joint is positive correlated with OA.7.The prevalence of knee OA,in first floor,flat building and lift building is 22.47%, Second to forth floor is 25.06%,above fifth floor is 28.03%.There is a remarkable difference of prevalence between osteoarthritis population and non-osteoarthritis population in distribution of residential building.The more number stories of stair-climbring is more easier to have OA.8.The prevalence of knee OA in using toilet bedpan of squatting position and sitting position is 28.26%and 23.83%respectively.The intensity exposure to using toilet bedpan of squatting position in osteoarthritis population is higher than non-osteoarthritis population. Using toilet bedpan of squatting position is positive correlated with OA.9.The prevalence of OA in menopause women and pre-menopause women is 72.81% and 13.36%respectively.The prevalence of OA in menopause women is much higher than that in pre-menopause women.Menopause is another risk factor of OA.10.The prevalence of OA in Osteoporosis positive people and Osteoporosis negative people is 41.47%and 36.11%respectively.The intensity exposure to Osteoporosis in osteoarthritis population is higher than that in non-osteoarthritis population.Osteoporosis is positive correlated with OA.11.There is a remarkable difference of emergent frequency among distribution of Traditional Chinese Medicine syndromes of knee OA.Further study,there is a remarkable difference of emergent frequency among three groups basic syndromes,they are kidney vacuity and marrow depletion syndrome,blockage of blood stasis syndrome,blockage of cold and damp syndrome,deficiency of liver and kidney yin syndrome,spleen-kidney deficiency syndrome,blockage of heat and damp syndrome.There is a remarkable difference of prevalence of Traditional Chinese Medicine syndromes in various ages.Conclusions:1.The total preyalence rate of OA in middle-aged and elderly people of Fuzhou city is 35.87%,the prevalence of knee OA is the highest,followed by lumbar OA and hand OA,The prevalence is 23.23%,15.41%and 2.39%respectively.2.Female is easier to have OA than man,the risk of having OA is 2.05 times than that of man.3.Age increasing is a risk factor of OA.The risk of having OA in aged populations is 1.347 times than that of low age populations.4.Obesity is positive correlated with OA.The risk of having OA in obesity populations is 1.347 times than that of non-obesity populations.5.Genetic factor is a risk factor of OA.The risk of having OA in the population who have family history of OA is 1.672 times than those who have not.6.The population who have trauma of bone and joint are more easily to have OA,the risk of having OA is 1.701 times than those who have not.7.Stair-climbring is a risk factor of knee OA,the risk of having knee OA in the population who live in higher building is 1.159 times than those who live in lower building and lift building.8.Using toilet bedpan of squatting position is positive correlated with OA.The risk of having OA in populations of using toilet bedpan of squatting position is 1.259 times than those who using toilet bedpan of sitting position.9.The risk of having OA in menopause women is 17.354 times than pre-menopause women.Menopause is another risk factor.10.Osteoporosis is positive correlated with OA,the risk of having OA in Osteoporosis positive people is 1.356 times than Osteoporosis negative people.11.Kidney vacuity and marrow depletion syndrome and blockage of blood stasis syndrome are the most syndromes.Blockage of cold and damp syndrome,deficiency of liver and kidney yin syndrome and spleen-kidney deficiency syndrome are the more syndromes. Blockage of heat and damp syndrome is the least syndrome.There are more syndromes of sthenia of evil such as blockage of blood stasis syndrome,blockage of cold and damp syndrome and blockage of heat and damp syndrome in from 40 to 59 years-old people.And there are more syndromes of deficiency of healthy energy such as kidney vacuity and marrow depletion syndrome,deficiency of liver and kidney yin syndrome and spleen-kidney deficiency syndrome in above 60-years-old people.
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