If the two pig spine studies are at all relevant, the side to side ROM of tethering, especially opposite the tether is about 1/4 that of the normal spine. If the dancer says she can do everything then she wasn't bending side to side much in her dancing which makes little sense to me. OR, like my daughter and like Ed, you can still have a fairly large ROM even with a fusion. So her dancing may be in range of what she can do with the tether.
Look at the pictures of tethered spines. It is very easy to see why bending side to side and especially to the opposite side would be much less than normal. There is a very tight tether there. It is not elastic. It is less ROM than even staples per that one study.
Look at the pictures of tethered spines. It is very easy to see why bending side to side and especially to the opposite side would be much less than normal. There is a very tight tether there. It is not elastic. It is less ROM than even staples per that one study.
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