title: Clinical evaluation of a lumbar interspinous dynamic stabilization device (the Wallis system) with a 13-year mean follow-up.
abstract: The authors determined current health status of patients who had been included in a long-term survivorship analysis of a lumbar dynamic stabilizer. Among 133 living patients, 107 (average age at surgery, 44.2 +/- 9.9 years) completed health questionnaires. All patients had initially been scheduled for decompression and fusion for canal stenosis, herniated disc, or both. In 20 patients, the implant was removed, and fusion was performed. The other 87 still had the dynamic stabilizer. Satisfaction, Oswestry disability index, visual analog scales for back and leg pain, short-form (SF-36) quality-of-life physical composite score, physical function, and social function were significantly better (p < or = 0.05) in the patients who still had the dynamic stabilization device. SF-36 scores of the fused subgroup were no worse than those reported elsewhere in patients who had primary pedicle-screw enhanced lumbar fusion. This anatomy-sparing device provided a good 13-year clinical outcome and obviated arthrodesis in 80% of patients.
authors.affiliation: Centre Aquitain du Dos, Clinique Saint Martin, Pessac, France.
authors.forename: Jacques
authors.initials: J
authors.lastname: Sénégas
authors.forename: Jean-Marc
authors.initials: JM
authors.lastname: Vital
authors.forename: Vincent
authors.initials: V
authors.lastname: Pointillart
authors.forename: Paolo
authors.initials: P
authors.lastname: Mangione
mesh_terms: D000328:Adult; D000368:Aged; D001672:Biocompatible Materials; D001860:Bone Plates; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000473:pathology / Q000601:surgery; D007866:Leg; D017116:Low Back Pain / Q000209:etiology; D008161:Lumbosacral Region; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000209:etiology; D059408:Pain Management; D017060:Patient Satisfaction; D011093:Polyethylene Terephthalates; D011184:Postoperative Period; D019919:Prosthesis Implantation; D011788:Quality of Life; D013122:Spinal Diseases / Q000473:pathology / Q000523:psychology / Q000601:surgery*; D013130:Spinal Stenosis / Q000473:pathology / Q000601:surgery; D016019:Survival Analysis; D014025:Titanium; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D001672:Biocompatible Materials; D011093:Polyethylene Terephthalates; D014025:Titanium