Abstract
Calcified tendinitis is a common shoulder disease accompanied with severe pain. We experienced many cases of calcified tendinitis over some short periods in a year. We examined the correlation between the occurrence of calcified tendinitis and seasons. 212 patients (males 72, females 140) with acute calcified tendinitis visited to 12 hospitals during two years (January. 2005-December. 2006) in the Chugoku and Shikoku area were investigated. The average age was 57.1 years old. The day of the 1st medical examination and the numbers of cases were examined. The correlation between the occurrence and 4 seasons (March-May, June-August, September-November, December-February) and the correlation in the occurrences between each areas were statistically analyzed. The correlation between the occurrence and seasons was not seen (Wilcoxon signed-rank test). In winter, the mean value of the number of cases of calcified tendonitis tended to be fewest. There was a strong correlation in occurrence between the Sanyo West and Shikoku Setouchi areas (Spearman correlation coefficient ; 0.53997, P=0.0065). More cases and analysis in various points of view are needed for evidence of the correlation between the occurrence and season.
