A recent study has found a surprising amount of force is placed on the cervical spine when people crane their heads to look at their smartphone devices, a new study has found.
According to a study published in Surgical Technology International, the head exerts 10 to 12 pounds of force on the spine even when the neck positioned in a neutral, upright position.
Using a computer simulated model of the human spine, Kenneth Hansraj found that when the neck is craned to 30 degrees from the vertical, the force placed on the spine is increased to 40 pounds. When the neck is craned at 60 degrees, the spine is experiencing 60 pounds of force, which is roughly the weight of 4 bowling balls, or the 8-year-old.
Smartphone users may be continually stressing their spines, unless they train themselves to bring their phones up to eye level.
It is estimated that Americans spend about an hour on their phones daily. The pressures exerted on theirs spine may lead to early wear and degeneration on the spine, back surgeon Kenneth Hansraj wrote in the study.
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