<prompt> Complications of sling procedures TVT for USI are all except:Injury to bladder and wound haematomaSling erosion paicularly with polytetrafluoroethyl- ene GoretexOveractive bladder in about 7 casesObturator nerve injury is about 10  <response>: Sling procedure employed for complicated cases of sphincter incompetence works by compressing urethra at the urethrovesical junction disadvantages:voiding difficulties, detrusor instability, sling erosion D.C.DUTTA;S TEXTBOOK OF GYNAECOLOGY,Pg no:405,6th edition 