Fell to the tailbone urine can not come out consider fracture displacement stimulation of the urethra, you can go to the hospital manipulation reset, there may be local swelling caused by irritation, you can lower the urinary catheter, if there is a urethral injury need surgical repair. 1. If you fall tailbone urinary incontinence need to take a film to see, if the fracture has obvious displacement, need to go to the hospital doctor manipulation reset, lift the local compression, generally can urinate on their own. 2. There is also the possibility that after the fracture of local bleeding and swelling caused by compression of the urethra, you can line retention of the urinary catheter for a few days. Generally 3~5 days later, if you have the consciousness of urination, you can remove the urinary catheter. 3. If there is blood in the urethra, consider urethral injury, need to perform urethral surgery. The fall tailbone urinary need to timely consultation, under the guidance of the doctor to check the cause and targeted treatment.