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This research was carried out to examine the effect of clamping on amount of urine and micturation time before removing indwelling urinary catheters in patients who underwent total knee and hip arthroplasty. Materials and Methods: The sample consisted of 60 patients who underwent total knee and hip arthroplasty. Patients were randomized according to the age group and gender were included in the study. After receiving request to removal the indwelling urinary catheters in patients in the experimental group, the patient's indwelling urinary catheter was clamped twice for 3 hours for urine to accumulate in the bladder and clamping was performed at each clamping interval and urine flow was provided for 5 minutes. In the control groups patients, the catheter was removed without clamping. After removal of the catheter, the amount of urine in the first urine was measured and the first micturation time was calculated as minutes Results: After removal of the urinary catheter, the experimental and control groups had a mean amount of urine of 293.50±239.53 ml and 204.00±195.25 ml, respectively. The experimental and control groups had a mean micturition time of 214.63±185.72 min and 211.16±192.77 min, respectively. The clamping does not affected the amount of urine and the micturation time before the indwelling urinary catheter was removed. Conclusion:Clamping indwelling urinary catheters before removing them had no effect on amount of urine and micturition time among patients who underwent total knee and hip arthroplasty.