A common cause of patient dissatisfaction after penile implant surgery is caused by the patient believing the penis has been shortened. Consecutive penile prosthesis operations were assessed in two high volume centers over a one-year period. Standardized measurements of stretched penile length and penile girth were performed in theatre just preoperatively, then remeasured at the end of surgery with the penis in the erect position. We recorded: type of penile implant, cylinder lengths and malleable rod diameters. All patients had data on body mass index (BMI), hypertension (HTN), glycated haemoglobin (HbA1c) and clinical Peyronie’s disease. 133 patients were assessed. 88 (66%) had a malleable prosthesis implanted and 45 (34%) had an inflatable implant. The mean BMI was 30.4. 40 (30.1%) patients had hypertension and 37 (27.8%) suffered from Peyronie’s disease. 89 men (66.9%) were diabetic. Penile implant surgery does not significantly decrease penile size compared to pre- operative assessment, but increases it for the great majority of patients |