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    Teen Girls Bear Brunt of Stress Fractures

    Study Suggests Stress Fractures in Teen Athletes Are More Common Than Thought
    By
    WebMD Health News
    Reviewed by Laura J. Martin, MD

    Feb. 15, 2011 -- Stress fractures in teenage athletes are under-reported and more likely to affect girls than boys, according to new research.

    Track, cross country, basketball, soccer, and football were the top sports activities linked with stress fractures in the study.

    ''Parents should be aware, this is a problem, and it's a greater problem than people necessarily think," says Andrew Goodwillie, MD, chief resident at University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School.

    He is presenting the findings this week at the 2011 annual meeting of the American Academy of Orthopaedic Surgeons in San Diego.

    Goodwillie fears that some doctors may dismiss the pain associated with stress fractures as simply growing pains in teens.

    The good news? "Stress fractures are fairly easy to treat," Goodwillie tells WebMD. Resting six to eight weeks is typically enough time to recover, he says.

    Stress fractures are due to overuse, occurring when muscles get fatigued and can't absorb added shock. The muscles then transfer the stress overload to the bone, resulting in a tiny crack or stress fracture, according to the American Academy of Orthopaedic Surgeons.

    The most common symptom is pain with activity, which decreases with rest.

    Most Common Types of Stress Fractures

    Goodwillie and colleagues evaluated stress fracture reports submitted by athletic trainers from 57 high schools between September 2007 and December 2010.

    For every report, the trainer completed an online form, answering questions about fracture pattern, the sport involved, level of participation, and training intensity.

    In all, 230 stress fractures were reported in 189 athletes, affecting 115 girls (61%) and 74 boys (39%).

    The bones most often fractured were:

    • Tibia (shin bone): 48%
    • Long bones in the forefoot: 19%
    • Spine: 6%
    • Pelvis: 6%
    • Hindfoot: 4%
    • Femur (thigh bone): 4%

    Varsity athletes were most likely to get a stress fracture, accounting for 64% of the cases.

    Boys were most likely to get fractures from track, football, and cross country; girls from track and cross country.

    The average age of boys when a fracture occurred was nearly 16; for girls, it was about 15 1/2.

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