Abstract
The width of crotch curve of the basic pants pattern in flat pattern method was studied for 50 young women (18-20 years old) and 50 elderly women (65-75 years old), the following results were obtained.
1) The width of crotch curve of basic pants pattern corresponding to the aging change of somatic type of adult women should be equal to 80% of the hip maximum depth.
2) It was proved graphically that the crotch curve on the flat pattern applying 80% of the hip maximum depth would become approximately 100% when worn.
3) The crotch curve width of basic pants pattern of young women ranged from 100-118% of the hip depth when worn.
4) The measurement of total crotch length is necessary to draft the basic pants pattern. However, it is difficult. It was proved that the total crotch length was highly correlated to middle hip girth for elderly women.
