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An MRI can diagnose a tear in the disc of cartilage cushioning the knee, but it does not reliably predict which tears can be repaired with surgery, a new study finds.

An MRI can diagnose a tear in the disc of cartilage cushioning the knee, but it does not reliably predict which tears can be repaired with surgery, a new study finds. It's estimated that more than 850,000 Americans undergo surgery each year for injuries to the menisci menisci

plural form of meniscus.
, two wedges of shock-absorbing cartilage in the knee joint. That surgery can involve either suturing the tear back together or removing the damaged portion of the meniscal tissue altogether. At present, surgeons cannot tell whether the tear will be reparable rep·a·ra·ble  
adj.
Possible to repair: reparable damage to the car; reparable wrongs.



[French réparable, from Latin repar
 until the surgery is underway. Knowing ahead of time would be helpful for both surgeons and patients, according to Dr. Nicholas M. Bernthal, the lead researcher on the new study. For patients, it matters because repaired meniscus meniscus /me·nis·cus/ (me-nis´kus) pl. menis´ci   [L.] something of crescent shape, as the concave or convex surface of a column of liquid in a pipet or buret, or a crescent-shaped cartilage in the knee joint.  tears have a more involved recovery compared with surgical removal of the tissue. When the injured tissue is simply trimmed off, "people can basically get up and walk home," said Bernthal, an orthopedic surgeon at the University of California, Los Angeles UCLA comprises the College of Letters and Science (the primary undergraduate college), seven professional schools, and five professional Health Science schools. Since 2001, UCLA has enrolled over 33,000 total students, and that number is steadily rising. . They'll have some pain, he noted, but there are few restrictions on what they can do, and most can fully return to their usual physical activities within about two weeks.

People who have the meniscal tear repaired, on the other hand, need about four to six weeks of recovery, often with physical therapy. So it would be nice, Bernthal said, to be able to tell patients ahead of time which surgery they are going to get. "This is one of the few instances in surgery where we can't tell people what to expect," Bernthal said. MRI scans are widely used to diagnose meniscus tears, and they are accurate up to 99% of the time, Bernthal noted. But that same MRI information has traditionally been considered a poor predictor of whether or not the tear can be repaired. While the imaging can show doctors that a tear exists in the meniscus, it is not good with the details--where the tear begins and ends, or how complex it is. Bernthal and his colleagues report the findings in the American Journal of Sports Medicine.
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Publication:MondayMorning
Date:Jan 10, 2011
Words:347
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