This chapter discusses the placement of penile prostheses following phalloplasty in transgender men and non-binary individuals undergoing gender-affirming surgeries. The purpose of this intervention is to improve both functional and cosmetic results for these patients. It discusses key preoperative considerations, with a focus on patient selection. Additionally, various prosthetic options, such as malleable and inflatable devices, are explored, particularly newer models designed specifically for transgender patients. Surgical techniques for prosthesis implantation are also covered, including incision selection, the use of biological grafts, and the placement of cylinders and reservoirs. Postoperative complications, such as infections, device migration, and failure, are addressed with insights on prevention and management. Finally, the chapter highlights the need for further research, particularly long-term studies evaluating the effectiveness of gender-specific devices.