Sports Medicine Said to Overuse M.R.I.’s (Gina Kolata @ NY Times)
Dr. James Andrews, a widely known sports medicine orthopedist in Gulf Breeze, Fla., wanted to test his suspicion that M.R.I.’s, the scans given to almost every injured athlete or casual exerciser, might be a bit misleading. So he scanned the shoulders of 31 perfectly healthy professional baseball pitchers. Dr. James Andrews found that M.R.I.’s can mislead.
The Athlete’s Pain
Overuse of Scans
Articles in this series look at popular sports medicine procedures that remain unproven.
M.R.I.’s can be extremely useful in sports medicine, said Dr. Andrew Green, the chief of shoulder and elbow surgery at Brown University. But, he says, there is a fine line between appropriate use and overuse.
That, at least, is what he found in one of the few studies to address the issue. The ideal study would randomly assign patients to have scans or not and then assess their outcomes. Such a study has not been done. Instead, a few researchers asked if scans made a difference for people who happened to have them. They found they did not — at least in two common situations.
Dr. Green and his colleagues reviewed the records of 101 patients who had shoulder painlasting at least six weeks and that had not resulted from trauma, like a fall. Forty-three arrived bearing M.R.I.’s from a doctor who had seen them previously. The others did not have scans. In all cases, Dr. Green made a diagnosis on the basis of a physical exam, a history, and regular X-rays.
A year later, Dr. Green re-assessed the patients. There was no difference in the outcome of the treatment of the two groups of patients despite his knowledge of the findings on the scans. M.R.I.’s, he said, are not needed for the initial evaluation and treatment of many whose shoulder pain does not result from an actual injury to the shoulder.
Dr. DiGiovanni did a similar study with foot and ankle patients, looking back at 221 consecutive patients over a three-month period, 201 of whom did not have fractures. More than 15 percent arrived with M.R.I.’s obtained by doctors they had seen before coming to Dr. DiGiovanni. Nearly 90 percent of those scans were unnecessary and half had interpretations that either made no difference to the patient’s diagnosis or were at odds with the diagnosis.
“Patients often feel like they are getting better care if people are ordering fancy tests, and there are some patients who come in demanding an M.R.I. — that’s part of the problem,” he said.
Some doctors might also feel they are providing better care if they order the scans, Dr. DiGiovanni said, and doctors often feel that they risk malpractice charges if they fail to scan a patient and then miss a diagnosis.
Dr. Hansen teaches his fellows — doctors in training — to be careful with scans and explains the risks of making the wrong diagnosis if they order them unnecessarily. He also knows it is not easy to refrain from ordering an M.R.I.
It’s different for him, Dr. Hansen says. He is so eminent that patients tend not to question him.
“When I say ‘You don’t need a scan,’ then it’s over,” Dr. Hansen said. His fellows get a different response. Patients, he says, “look at them like, ‘You don’t know what you’re doing.’ “