Procedure Aims to Relieve Back Pain
July 1st, 2009
Source: Foot.com
Publication date: 20090701
Drs. Sandeep Sherlekar and Atif Malik use a system of high-powered water jets known as Percutaneous HydroDiscectomy to cut into the nucleus of the spinal disc and remove buildup of fluid which is the typical cause of lower back pain.
The procedure involves using a stream of water flowing at 600 miles per hour that is only as thick as a strand of hair.
Sixty percent of lower back procedures are done without surgery in Europe, according to Malik. “A lot of people miss out on minimally invasive methods because they don’t realize these options are available,” he said.
The spine is the backbone of the body. When it hurts, the whole body hurts. Low back pain is common in people for all sorts of reasons, the doctors said.
“Man was not designed to walk on two feet,” Sherlekar said. Malik said he doesn’t necessarily agree with that, but said genetics, poor nutrition, lack of exercise and excess weight, along with desk jobs and lots of sitting in general, contribute to low back pain. The older we get, the worse it gets.
The spine is made up of muscle and bone, and muscles must be used. Muscles that aren’t used atrophy, and then cause pain when subjected to too much stress. Core-strengthening exercises help the back muscles, and help people use their backs without hurting them.
“We want people to be active,” Malik said. “We want to repair the problem they have.”
The two doctors were trained in interventional spine specialty.
“Spine care is evolving,” Sherlekar said. “In the old days, you cut and hacked, and if it didn’t work, you sent people to pain management.” That usually meant drugs to relieve pain. “Surgical intervention is not necessarily the best. The outcome is better with conservative pain management.”
The procedure works best for patients up to about age 60. Sherlekar said the earlier people seek treatment for back pain, the better off they’ll be. After treatment, patients must be serious about exercise, good nutrition, keeping their weight down and not smoking if they expect to prevent future back pain.
How it works
HydroDiscectomy has its roots in laser surgery, which has been used as a minimally invasive way to treat back pain since about 1975.
The spine is composed of a row of discs, interspersed with bone. The discs are soft and spongy, resembling a jelly doughnut, Malik said. The center of the disc, known as the nucleus, has lots of fluid, which is supposed to stay there.
But back strains cause fluids to leak out of the nucleus. Fluids leak into the surrounding annulus, and sometimes, leak beyond the annulus, causing a bulging disc. The leaking fluid, especially when it becomes a bulging disc, is the source of much pain.
In the 35-year-old laser method, Malik said, the laser is inserted into the spine to suck out the fluids that are causing the disc to bulge. The problem with this is heat from the laser can cause nerve damage.
Surgery typically doesn’t get rid of the leaky fluid causing the pain, Sherlekar said. Surgery requires immobilization and months of recovery. Once those immobile muscles start being used again, there’s going to be a lot of pain. Sherlekar likened the pain to that surrounding the muscles when a bone is broken. Once you begin to walk on a broken leg or use a broken arm after weeks in a sling, the pain at first can be intense.
“When you fuse the spine (as is often done in surgery), you cast it, and you lose that range of motion while in the cast,” Malik said. When the cast comes off, that’s when the pain is felt most.
Surgery to fuse the spine usually provides temporary relief, he said. The muscles around the fused section atrophy and eventually become painful. “Muscles are made to move,” he said. That’s why patients that undergo back surgery often feel pain return a year or more after the surgery.
HydroDiscectomy enables doctors to reach a long, slender probe into the spinal disc. It sucks the water out of the annulus surrounding the disc, or to continue the jelly doughnut analogy, the doughnut part of the jelly doughnut. Once the fluid is removed from that “doughnut,” and any bulges removed, pain is decreased, Malik said.
X-rays are used to determine where the probe must go, and an endocsopic probe is used to look at the disc. A needle-like probe is used to suck out the fluid, using a high-pressure water jet. It’s known as the Venturi Effect, Malik said.
The same technology is used to cut steel, he said. Unlike heat, water doesn’t damage the surrounding area.
The procedure to remove the fluid takes about 15 minutes, Malik said. The needle probe is actually inside the spinal disc for about 3 minutes, he said. “People can go back to work within a week.”
It takes a bit longer if there’s a bulging disc. “When you herniate a disc, you create a flap of skin,” Malik said. “You’ve got to remove that; otherwise it won’t heal.” It is removed using an endoscopic probe.
Testimony
Danette Dunn, 36, of Kearneysville, W.Va., had the procedure done six weeks ago. “It was an immediate relief,” she said. “I was to the point where I could barely walk.”
She had two herniated discs, and one was torn. She also had stenosis, or a compressed spinal chord. “I had years of shots and pain medication,” she said. The pain was getting worse in her back, and traveling into her legs and feet.
“I went from a 10 on the pain scale (out of 10) to a one, sometimes a zero,” she said. She was able to walk out of the office after the procedure, which was on a Friday. Two days later, she was back to work.
The doctors have done about a half dozen of these procedures in Frederick . Their practice has offices in Germantown and Waldorf, and Malik also works in New Jersey, where he said insurance companies are more comfortable with the procedure.
“It takes time to adapt to new changes,” Sherlekar said. “Everyone wants 10 years of retrospective data on a new procedure.”
He has been practicing in Frederick since 1997. Sherlekar is an anesthesiologist, and both he and Malik are pain management specialists, not neurosurgeons or orthopedic surgeons. They received their pain management training from a program at Harvard.
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