A man with back discomfort after a laminectomy This month, Dr Stephen describes a full case of recurrent mechanical back pain occurring 12 a few months after a laminectomy. Does the presentation suggest a recurrent disc prolapse? Presentation A 45-year-old office worker presents to his doctor 12 months after a successful laminectomy for a lumbosacral disc prolapse on the remaining side. The prolapse had been leading to sciatica in the distribution of the S1 nerve root sildenafil citrate . However, he has been troubled by recurrent episodes of mechanical back again pain, the latest of which is the worst and is still bothering him.

A genetic tool for cleaner water A genetic tool utilized by medical researchers could also be used in a novel approach to remove dangerous microbes and viruses from normal water. In a series of proof-of-concept experiments, Duke University engineers demonstrated that brief strands of genetic materials could successfully focus on a matching portion of a gene in a common fungus found in water and make it go wrong. If this new strategy can be perfected, the experts believe that it might serve as the foundation for a gadget to greatly help solve the issue of safe normal water in Third World countries without drinking water treatment facilities.