Tailbone ?: The actual tailbone is lower than the top of the "crack" of you buttock. What you are describing and considering your age, sounds though your are having either paraspinal muscle spasm or psoas muscule spasm. Google those muscles and see what you think.
Answered 12/13/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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