OBJECTIVE: To evaluate one-year results of using dynamic spacers in listhesis grade I of Meyerding using Oswestry Disability Index. METHODS: The disability scale review was based in the electronic and radiographic history of patients according to criteria in the period from January 2008 to December 2010, in order to conduct a cohort study, retrospective, longitudinal, and observational. RESULTS: The Oswestry index before surgery was 3.4% mild, 55.2% moderate and severe 41.4%, while the postoperative was 79.3% mild and 20.7% moderate. The most common surgery performed was exploration and release in 72.4%, and only 27.6% had discectomy. Patients had pain radiating to right lower limb in 37.9%, to the left lower limb in 44.8% and to both lower extremities in 17.2%. Pain radiating to the lower limb after surgery was found only in 2.4%, and 100% of the cases had some type of radiating pain. The DIAM interspinous implant was used in 79.3%, and the Wallis in 20.7%. CONCLUSIONS: Treatment with interspinous spacer has a low rate of reoperation and at least during one year presented significant improvement in the rate of disability.
Spine; Low back pain; Spondylolisthesis; Internal implants
