Minimally invasive non-surgical intervention on the perineum to eliminate postpartum changes. Minimally invasive threaded perineoplasty is performed by eliminating the gaping of the genital slit, strengthening the vaginal entrance and strengthening the muscles that constrict the vaginal entrance. Due to the threaded perineoplasty, the prolapse of the posterior vaginal wall and the formation of rectocele (pathological protrusion of the rectal wall through the posterior vaginal wall) are prevented.