>>11991> In those cases many people need to ask […]
That's quoted from 11584, FYI.
Anyway, here is the final image from the compilation along with a summary supported by it included in the OP image:
• Strong, repeated shear force in the anal canal is likely to cause permanent damage to supporting tissues of the internal hemorrhoidal cushions at the least, leading to internal hemorrhoidal prolapse (progressively worsening with cumulative damage from repeated trauma). Since healthy internal and external anal cushions help to maintain fecal continence with a watertight seal, anal canal deformation due to their disease or removal can result in fecal incontinence.
• Internal rectal prolapse (IRP), aka rectal intussusception, is a common finding among asymptomatic individuals. Strong, repeated shear force in the rectum probably does contribute to development of full-thickness external rectal prolapse (aka procidentia) particularly when IRP is present. Internal hemorrhoidal prolapse—among other conditions—also may contribute to rectal prolapse development. Fecal incontinence can be a consequence of rectal prolapse as well.
• Overstretching the anal canal with girthy insertions is likely to cause disruption or fragmentation of one or both anal sphincter muscles, which results in permanent muscle weakening and is associated with fecal incontinence (especially with a damaged or dysfunctional puborectalis muscle). Stretching the anal canal repeatedly with insertions of progressively increasing circumference may cause cumulative muscle damage.
• Trauma—including erotic anoreceptive trauma—can instigate development of numerous other anorectal conditions that may cause or lead to fecal incontinence, including fistulas. Surgical treatments for anorectal conditions also can contribute to development of fecal incontinence.