This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urogynecology, Subject name: Gynaecology & Obstetrics
Complications of sling procedures (TVT) for USI are all except: 
Select and explain. 
A. Injury to bladder and wound haematoma, B. Sling erosion paicularly with polytetrafluoroethyl- ene (Goretex), C. Overactive bladder in about 7% cases, D. Obturator nerve injury is about 10%
D: Obturator nerve injury is about 10%
Answer: D: Obturator nerve injury is about 10% 
Explanation: 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