GB 16395-2011Criteria for delimitation and classification of Kaschin-Beck disease endemic area (English PDF)

4.1.1 Light Ward

Local residents clinical I degrees and above, or the prevalence of children aged 7 to 12 X-ray detection rate of <=10%.

4.1.2 Ward

Local residents clinical I degrees and above, or the prevalence of children aged 7 to 12 X-ray detection rate of > 10% and <=20%.

4.1.3 District ill

Local residents clinical I degrees and above, or the prevalence of children aged 7 to 12 X-ray detection rate of > 20%.

The number of children with clinical X-ray examination in Appendix A; when clinical survey and poor consistency Children X-ray examination results, X-ray inspection child Search results shall prevail.

4.2 Typical cases by age distribution division

4.2.1 New Ward

No typical case occurred on the history of the local population. Prevalence I degree and above in all cases in people under the age of 20, the epidemiological Investigation, clinical survey and children 7 to 12 years old X-ray examination, in line with the epidemiological characteristics of the disease, with this standard, the criteria for determining the ward can be determined the new ward.

4.2.2 History Ward

Local typical cases had occurred and was identified as Ward. The clinical survey, 20 years of age and no more than I degree cases; 7 ~ Children 12 years old X-ray detection rate of Appendix A (Normative) Instructions for proper use of the standard Clinical I degree and above this standard A.1 of the "typical case" means a place in a local living for six months or more of the resident population Cases, or children's hands with multiple X-ray, bone side symmetry change cases.

A.2 of this disease ward and ward determines the type of division, are villages (Tun) units.

A.3 clinical examination of not less than 100 people, villages (Tun) resident population of less than 100 people, should be with the neighboring villages (Tun) merger; 7 to 12 years old the number of X-ray film for children, less than 50 people (if a natural village,, children aged 7 to 12 with less than 50, should be near the village, Tuen age children Top-up), more than 50 people were stratified random sampling, every age, the film is not less than the number nine.

A.4 the region after several years of serious illness evolution, may become history ward, ward light. In the history of the ward or some mild areas of the disease can be stopped Only popular, so the children aged 7 to 12 degrees and clinical examination without I above cases, X-ray detection rate