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2017 ; 10
(2
): 182-188
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Interspinous implants to treat spinal stenosis
#MMPMID28324328
Gala RJ
; Russo GS
; Whang PG
Curr Rev Musculoskelet Med
2017[Jun]; 10
(2
): 182-188
PMID28324328
show ga
PURPOSE OF REVIEW: Lumbar spinal stenosis has historically been treated with open
decompressive surgery which is associated with significant morbidity and may give
rise to various complications. Interspinous spacers (ISS) have been developed as
a less invasive strategy which may serve to avoid many of these risks. The two
current spacers that are FDA approved and commercially available are the Coflex
and Superion devices. The goal is to review these two implants, their
indications, and patient selection. RECENT FINDINGS: The Coflex device has been
shown to be analogous to decompression and fusion when treating moderate spinal
stenosis. It provides dynamic stability after a decompression is performed,
without the rigidity of pedicle-screw instrumentation. Recent results show
improved outcomes in Coflex patients at 3 years of follow-up, as compared to
decompression and fusion. The Superion implant is placed percutaneously in the
interspinous space with minimal disruption of spinal anatomy. When compared to
the X-Stop device (which is no longer available), the Superion implant shows
improved outcomes at 3 years of follow-up. ISS are lesser invasive options as
compared to formal decompression and fusion for the treatment of lumbar spinal
stenosis.