Correlation between atmospheric temperature and testicular torsion

大気の寒冷と相関のあるといわれる精巣捻転症39例について, 発症時の気温を検討した。14例は春季に, 13例が秋季に, 12例は冬季に起こっていた。発症時間は4:00p.m.から深夜が29例(54%), 深夜から8:00a.m.が13例(35.1)で日中は僅か3例(10.8%)であった。患者の住む消防署の気象データから, 気温は29例(76.3%)が当県の平均気温15°C以下で発症していた。発症頻度は温度と相関した
A study on correlation between testicular torsion and atmospheric temperature was made based on 39 patients observed at Tokai University Hospital. Testicular torsion did not occur in any of the 39 patients in the summer (June to August), but occurred in 14 patients in spring (March to May), in 13 patients in autumn (September to November), and in 12 patients in winter (December to February). The onset hour was between 04:00 p.m. and midnight in 20 patients (54.1%), between midnight and 08:00 a.m. in 13 patients (35.1%), and between 08:00 a.m. and 04:00 p.m. (in the daytime) in only 3 patients (10.8%). In each of 38 patients, the atmospheric temperature at the onset hour was investigated on the basis of meteorological observations made by the fire department located in the region of the patient's residence. The data indicated that testicular torsion in 29 patients (76.3%) occurred below 15 degrees C (below the average temperature in Kanagawa Prefecture). Furthermore, a correlation (Spearman's coefficient above 95%) between reduction in temperature and onset frequency was noted. Evidently these findings suggest that the incidence of testicular torsion tends to increase with reduction in temperature.