I am unable to comprehend your question fully. But for spondulities and neck catch where you feel extreme pains even to turn your neck sideways resting your neck on cylindrical objects help to press at the exact point where it pains and even turn your neck slowly side to side and such rest for half an hour helps.So Bamboos are cylindrical but they must be well grown thick bamboos and cut properly. Otherwise any metallic or other tick pillow like cylinderuical object is enough. Try comfortable one
Even rounded sofa cylindrical side rest helps at times.
April 23rd, 2010 | 
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I am unable to comprehend your question fully. But for spondulities and neck catch where you feel extreme pains even to turn your neck sideways resting your neck on cylindrical objects help to press at the exact point where it pains and even turn your neck slowly side to side and such rest for half an hour helps.So Bamboos are cylindrical but they must be well grown thick bamboos and cut properly. Otherwise any metallic or other tick pillow like cylinderuical object is enough. Try comfortable one
Even rounded sofa cylindrical side rest helps at times.
Here’s a place selling them
http://www.jlifeinternational.com/houseitems/futon/pillow/JLCPM-50N_e.html
Here’s one on eBay
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=4377267566&category=20445