The Denneroll is a custom orthotic device used to induce proper cervical, thoracic, and lumbar (neck, mid-back, and low back) curves when used regularly (usually twice per day for 20 minutes.) These are only sold and only to be used under the direct supervision of a chiropractor. Ideally, one who is trained in Chiropractic BIoPhysics, the biomechanical system for which the Dennerolls are made. We have over 270 peer-reviewed scientific publications on spinal analysis and correction and are the most qualified to determine the optimal type and placement of Denneroll for the patient’s unique needs. If you have a Denneroll orthotic please do NOT EVER allow anyone else to use your appliance(s) unless they’ve been instructed on proper use because they are custom-fit for each person and what makes one person better can and does make another person worse!