We determined the frequency of occurrence and dynamism of the mentioned retrograde lesions. The investigated material comprised 371 cartilages collected from 95 male tracheas (mean age: 56 ±13 years), and 279 cartilages collected from 70 female tracheas (mean age: 65.3 ±14 years) during the process of aging. The dynamism proved non-homogenous with a visible gender difference. The empirical regression curves often crossed each other. Some of the presented curves in female patients were observed beginning two decades after that of male patients, and at lower levels. Thus, it seems hard to conclude that some processes considering tracheal cartilage morphokinesis always precede others.