 The patient understood major risks and complications such as death and paralysis seemingly rare, main concern is a 10 to 15% of failure rate to respond to surgery for which further surgery may or may not be indicated, small risk of wound infection, spinal fluid leak. 
The patient understood major risks and complications such as death and paralysis seemingly rare , main concern is a 10 to 15 % of failure rate to respond to surgery for which further surgery may or may not be indicated , small risk of wound infection , spinal fluid leak .