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Pushing Back on Back Surgery

Special to the Red Bluff Daily News

Posted 08/16/2010

Minneapolis (MCT) - Three years ago, Amy Leyden took her 10 year old son, Luke on a vacation to Oregon. Her back hasn't been the same since.

In a furious game of touch football, Leyden made a spectacular catch but landed flat on the back. That night, she slept on a friend's couch, and the next day, the fearless duo went on an ill-advised dune buggy ride on the Oregon coast.

Within a month, the "40 something" marketing manager at the University of Minnesota was diagnosed with a herniated disk, a condition so painful she had to conduct meetings lying flat on her belly in her office. "It was excruciating." She said.

Leyden's story is an increasingly familiar one in American medicine. Four out of five Americans will suffer from disabling back pain during their lifetimes, according to the National Institutes of Health. Spending on back care soared between 1997 and 2005, reaching $86 billion - just shy of what Americans spent battling cancer.

As those numbers have multiplied, so have questions about the more aggressive forms of back treatment. A 2008 study in the Journal of American Medical Association, for example, noted that the increase in back-care spending occurred "without evidence of corresponding improvement" in patient's health.

"Intense pain is not necessarily an indication for surgery," said Dr. Richard Deyo, a professor of family medicine at Oregon Health and Science University and one author of the study. "You can't fix everything with a knife."

Perhaps the biggest controversy involves an invasive surgery called spine fusion, which attempts to relieve back pain by permanently connecting (or fusing) several levels of bone in the spine.

While the overall number of back operations has flattened out in recent years, complex fusion surgeries, which can cost upward of $80,000, continue to proliferate. American surgeons now perform twice as many of these operations as their counterparts in most European countries, Australia and New Zealand, and five times more than the United Kingdom; despite similar patient populations.

This debate is likely to intensify under the sweeping new federal health legislation that President Obama signed in March, which will gradually require doctors and hospitals to demonstrate that their services are cost-effective. In that vein, the New England HealthCare Institute estimates the United States could save roughly $1 billion a year eliminating unnecessary back surgeries. Minnesota is likely to be a crucible in this debate. The state is home to Medtronic Inc., the world's largest maker of devices used in spine surgery. It is also home to Abbott Northwestern Hospital, which performs more spine fusion surgeries on Medicare patients than any other hospital in the country; according to the industry publication Orthopedic Network News.

Fusion surgery has historically been used to correct deformities, fractures, complications related to tumors and other rare conditions. The surgical results have been good, and largely noncontroversial.

But in recent years, more and more of these procedures have been used to treat back pain related to aging, prompting several studies to question whether the expensive intervention is worth it.

Fusion involves a surgical tool kit consisting of screws, rods, cages, and plates. Also sometimes a biologic product made by Medtronic called Infuse, which grows bone between the vertebrae in an effort to stabilize the spine.

In 2006, American doctors performed approximately 343,000 spine fusion operations; up 82 percent from 1999, according to the Nation Center for Health Statistics. This tracks Medicare data, omitting perhaps thousands more paid by other sources. Since then, the number has continued to rise, though not as explosively. The Millennium Research Group estimates 445,000 spine fusion surgeries were done last year.

The cost of fusion surgery varies widely, according to data compiled by United Health Group; the Minnetonka, Minn - based insurer. For a complex lumbar fusion surgery, in a "typical" major metropolitan market, the cost can vary from $25,000 to almost $80,000.

Deyo has argued that the rising costs, high rates of complications, second surgeries, and wide variations in the number of procedures performed from one state to another "generate concern that the procedure may be over used."

Others claim the increase in fusion surgery may be related to improvements in technology and the simple fact that baby boomers are aging. "Americans think longevity is a right and death is optional," said Dr. Sam Ho; chief medical officer for UnitedHealth Group, the nation's largest insurer. "We all want to be as active as we can - and for as long as possible."

The surge in fusion surgery has meant big money for Fridley, Mann -based Medtronic, whose spine business reported some $3.5 billion in sales last year.

Critics argue that influence by big medical device companies - including lucrative royalty and consulting arrangements bestowed on top surgeons whose opinions hold sway among their colleagues - is one reason why the number of spine fusion surgeries has skyrocketed. Earlier this year Medtronic disclosed these payments to doctors for the first quarter. Of the $16 million Medtronic paid in those three months, $14 million went to spine and orthopedic specialists mostly for royalties.

Medtronic and others insist that collaboration with doctors is crucial for creating and perfecting innovative new tools to treat patients. But Dr. Charles Rosen, a California spine surgeon and the head of the Association for Ethics in Spine Surgery, says these financial incentives create demand for certain brands of product. "That's one reason why you're seeing so many fusion surgeries," he said.

Other specialists say the situation is more nuanced. Each patient is different, they say.

"Is there too much back surgery? Yes, "said Dr. John Sherman, an orthopedic surgeon with Twin Cities Orthopedics, one of the nation's biggest practices of its kind. "But it's not as dark as (Dr.) Deyo portrays it, nor is surgery a panacea for curing all back pain."

One satisfied patient is Amy Leyden, who turned down surgery "out of pure fear" and went to 24 rehab sessions at Physicians Neck and Back Pain instead.

"You're pushed," she said. "It's like having a personal trainer. But I would have never done it on my own. As soon as it got painful, I would have quit."

It worked. Today, Leyden keeps up with two kids, plays tennis and goes to the Y a couple of times a week.

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