Published 7/1/2014

Second Look—Clinical News and Views

Concussion diagnosis rates rising
According to findings published online in The American Journal of Sports Medicine, national concussion diagnosis rates for high school sports increased significantly between 2005 and 2012. Based on data from the High School Reporting Information Online sports injury surveillance system, overall concussion diagnosis rates increased significantly from 0.23 per 1,000 athlete-exposures in academic year 2005-2006 to 0.51 per 1,000 exposures during 2011-2012.

Impact of BMI on TKA LOS and costs
A study in The Journal of Bone & Joint Surgery suggests that obesity may be associated with longer hospital stays and higher costs in total knee arthroplasty (TKA). Based on data from a single center on 8,129 TKA patients, length of stay (LOS) and direct medical costs were lowest for patients with body mass index (BMI) values in the normal to overweight range. Increasing BMI was associated with significantly longer LOS and costs.

FDA drug safety communiqué
The U.S. Food and Drug Administration (FDA) issued a Drug Safety Communication comparing the use of dabigatran etexilate to warfarin. Study data from 134,000 Medicare patients aged 65 years or older suggest that, among new users of blood-thinning medications, dabigatran etexilate may be associated with a lower risk of clot-related strokes, bleeding in the brain, and death, but an increased risk of gastrointestinal bleeding, compared to warfarin. The risk of myocardial infarction was similar for both drugs.

These items originally appeared in AAOS Headline News Now, a thrice-weekly enewsletter that keeps AAOS members up to date on clinical, socioeconomic, and political issues, with links to more detailed information. Subscribe at www.aaos.org/news/news.asp (member login required)