Penile prostheses have been available for over 50 years with two main types: malleable (rigid in corpora cavernosa, manually positioned, less concealable) and hydraulic three-piece (inflatable cylinders, scrotal pump between testicles, bladder reservoir; activated/deactivated for natural erection, completely hidden and physiological) .

Penile prosthesis length expectations require honest preoperative counseling before hydraulic or malleable implant surgery. Patients measure stretched flaccid length by pulling penis from glans (without forcing foreskin retraction)—this determines maximum cylinder length matching final inflated/malleable erection. Satisfaction with this measurement predicts postoperative happiness; dissatisfaction warrants surgical deferral to avoid regrets . Penile prosthesis length assessment […]