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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_X | Pages 68 - 68
1 Apr 2012
Kabir S Gupta S Casey A
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To evaluate the current biomechanical and clinical evidence available on the use and effectiveness of lumbar interspinous devices

Literature review

A PubMed search was done using the following key words: interspinous implants, interspinous devices, interspinous spacers, dynamic stabilization, X-stop, Coflex, Wallis, DIAM. The abstracts of all the articles were reviewed. Further critical analysis was done of the relevant articles. Special emphasis was given to those articles pertaining to biomechanical and clinical results.

A total of 50 articles were found, 18 of them also related to the effect of spacers on the biomechanics of the spine. 25 articles were on the X-stop device. However, level I evidence is lacking. Only two prospective randomized controlled trials have been done and these were on the X-Stop device.

Analysis of current evidence suggests a potential beneficial effect of lumbar interspinous spacers in select group of patients. However, further level I evidence is required to justify their widespread use for all the proposed indications. The results of the ongoing trials are keenly awaited.