1990年3月下旬,通过一犯人自用刮胡刀片划开阴茎颈部包皮,在无消毒的条件下放入碎玻璃磨成的珠子,用普通针线缝合,而致发炎。就诊时,得知其他犯人也有在阴茎安放玻璃珠的情况。经普查有123人在阴茎颈部背面及双侧包皮下安放玻璃珠。每人安放数目最多10颗,最少1颗;珠的直径为0.5—0.8厘米。这123人中,年龄最小19岁,最大50岁,20—40岁者117人占95.12％;安放时间最长18年,最短 In late March 1990, the penis neck foreskin was delineated by an inmate razor blade, placed in a glass-ground bead under sterile conditions and stitched with ordinary needlework to cause inflammation. At the time of my visit, I learned that other prisoners also had glass beads in the penis. The census of 123 people in the back of the penile neck and bilateral subcutaneous foreskin placed beads. The number of each placed up to 10, at least one; beads diameter of 0.5-0.8 cm. Among these 123 people, the youngest is 19 years old, the oldest is 50 years old, and the age is 20-40 years old, accounting for 95.12%. The longest time is 18 years, the shortest