Weight Loss Surgery May Cut Knee Osteoarthritis Pain

Losing weight can help reduce the amount of pain experienced by obese people with knee osteoarthritis, researchers say. The new study included 24 obese adults, aged 30 to 67, with knee osteoarthritis who underwent weight loss surgery. The patients' knees were assessed before surgery and at six and 12 months after surgery. Patients who lost an average of 57 pounds within six months of having bariatric surgery showed significant improvements in knee pain, stiffness and physical function, the investigators found.

These patients also experienced improvements in quality of life, the ability to perform day-to-day tasks and sports activity. None of the patients received other treatments for their knee osteoarthritis. The findings were scheduled to be presented Saturday at the American Orthopaedic Society for Sports Medicine's Specialty Day program. "Each individual had some kind of improvement in their pain from losing weight, some more than others," lead researcher Christopher Edwards, of the Penn State College of Medicine, said in a society news release.

"There are few studies that have investigated the role of isolated weight loss in the absence of additional arthritis treatment on those individuals with radiographically confirmed osteoarthritis," he added. "Further research still needs to be performed to investigate whether knee arthritis symptom improvement continues over time and applicable to those individuals who are simply overweight, but our research suggests a strong possibility of improvement."

More Kids Who Play Basketball Suffering Head Injuries

Children's basketball may be getting rougher or the kids may be bigger, but either way the number of head injuries is soaring, researchers report. "Although the total number of injuries decreased during the study period, the number of traumatic brain injuries increased by 70 percent," said study author Lara McKenzie, of the Center for Injury Research and Policy at Nationwide Children's Hospital in Columbus, Ohio. "These injuries are exceedingly high in this popular sport," she added. "This is cause for alarm." McKenzie thinks the increased size of players is one factor in the increase in concussions. Another is that the game has become more competitive, she said. Why total injuries have gone down by 20 percent over the 11 years covered by the study is not clear, McKenzie added.

"We don't want to discourage kids from physical activity. We don't want to discourage kids from playing basketball, either," she said. "But we need to recognize that there are some inherent risks in any activity." McKenzie added that the problem of traumatic brain injury needs to be addressed. "Maybe we need to do more education of coaches, athletes and parents to recognize the signs of concussion and help to prevent them," she said. The findings are published in the Sept. 13 online edition of the journal Pediatrics. For the study, McKenzie's team used data from 1997 to 2007 from the U.S. Consumer Product Safety Commission's National Electronic Injury Surveillance System to estimate the number of children injured while playing basketball.

Over the study period, the researchers found an estimated 4,128,852 children were treated in emergency rooms for injuries sustained while playing the sport. That's 375,350 every year. While the total number of injuries went down over the study period, traumatic brain injuries increased 70 percent, the researchers found. The most common other injuries were sprains in the legs 30.3 percent, particularly of the ankle. Boys were more likely to suffer cuts, fractures and dislocations, while girls were more likely to suffer concussions and knee injuries. Children 15 to 19 years of age were three times more likely to injure their knees and ankles, while younger children, aged 5 to 10, were more likely to suffer concussions, fractures and dislocations, the study found.