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  • New in the Literature: Predictors of WBA After TKA (Gait Posture. 2012 September 11. [Epub ahead of print])

    Greater amounts of weight-bearing asymmetry (WBA) 1 month after total knee arthroplasty (TKA) are predicted by modifiable factors, including habitual movement pattern and asymmetry in quadriceps and hamstrings strength, say authors of an article published online in Gait & Posture

    Fifty-nine people were tested preoperatively and 1 month following unilateral TKA for WBA using average vertical ground reaction force under each foot during the Five Times Sit-to-Stand Test. Candidate variables tested in the regression analysis represented physical impairments (strength, muscle activation, pain, and motion), demographics, anthropometrics, and movement compensations.

    WBA, measured as the ratio of surgical/nonsurgical limb vertical ground reaction force, was 0.69 (0.18) (mean (SD) 1 month after TKA. Regression analysis identified preoperative WBA, quadriceps strength ratio, and hamstrings strength ratio as factors predictive of WBA 1 month after TKA (R(2)=0.30).

    APTA member Cory L. Christiansen, PT, PhD, is lead author of the article. APTA members Michael J. Bade, PT, and Jennifer E. Stevens-Lapsley, PT, PhD, are coauthors. 

    Countdown to Kickoff for APTA's 'Fit After 50' Campaign

    On October 1, in conjunction with National Physical Therapy Month, APTA will launch an extensive outreach initiative to our nation's Baby Boomers through its "FitAfter 50" campaign. The purpose of the campaign is to reach Boomers with the message that physical therapists play a vital role in helping people age 50 and older remain active, fit, and mobile as they age.

    The campaign will begin with "50 Days, 50 Ways," a daily series of 50 tips, provided through social media from APTA members, about preventing injury by staying active and fit. The public can view the tips on the moveforwardpt.com/fitafter50 webpage and via Twitter @MoveForwardPT, and Facebook.com/MoveForwardPT. Please participate by sharing these tips with your patients, family, and friends!

    In addition, we'll be launching the "Fit After 50 Member Challenge," an opportunity for APTA members to go online and nominate member colleagues ages 50 and older who are committed to being fit, active, and mobile as they age. Winners will be announced at the APTA Conference & Exposition in 2013.

    Watch for more information in next week's News Now about how you can be a part of this exciting campaign.