Wallis Posterior Dynamic Stabilization Device
Preserves the anatomy, keeps option open for later treatment
Treat the pain
Surgery for degenerative lumbar lesions is undergoing a metamorphosis with the emergence of the non-fusion concept to treat chronic intractable lumbar pain when conservative treatment fails.
Mechanical supplementation with non-rigid fixation clearly appears to be a useful technique in the management of initial forms of degenerative intervertebral lumbar disc disease.
This method should rapidly assume a specific role along with total disc prostheses in the new step-by-step surgical strategy to obviate definitive fusion of degenerative intervertebral segments.
We began studying and developing non-rigid stabilization of lumbar segments in 1984. The clinical trials(1) of the first-generation implant provided evidence that the interspinous system of non-rigid stabilization effectively treats low-back pain due to degenerative instability and is free of serious complications.
Today the second generation has been developed after careful analysis of the points that could be improved on the first-generation implant.
This implant, called Wallis Posterior Dynamic Stabilization Device ,
treats the pain due to degenerative instability, preserves mobility,
anatomy and stability while being fully reversible, therefore leaving
all subsequent therapeutical options open.
1. «Long-term actuarial survivorship analysis of an interspinous
stabilization system» Sénégas J, Vital JM, Pointillart V, Mangione P;
Eur Spine J (2007) 16:1279-1287.
«Clinical evaluation of a lumbar interspinous dynamic stabilization device (the Wallis System) with a 13-year mean follow-up» Sénégas J, Vital JM, Pointillart V, Mangione P; Neurosurg Rev (2009) 32:335-342.
The Wallis Posterior Dynamic Stabilisation System treats low-back pain that accompanies degenerative lesions of grade II, III and IV (Pfirrmann MRI classification)(1) in the following indications:
PEEK-OPTIMA® Polymer is a trademark of Invibio Ltd.