[Dynamic transpedicular instrumentation with S14 system (B-FUS) in lumbar spine. Experience in 32 cases]

To evaluate functional and radiographic results in patients with diagnosis of degenerative disease of the lumbar column subject to treatment with transpedicular fixing plus the application of system S14 (B-FUS), and to evaluate the disease development of adjacent disk associated with the method of selected treatment.

A transversal descriptive retrospective study in which a total of 32 patients with diagnosis of the degenerative pathology of the column lumbar was included, including 12 patients with lumbar degenerative discopathy (37.50%), 11 patients intervertebral lumbar instability (34.38%), seven with narrow lumbar channel (21.88%) and two patients with adjacent discreet disorder disease (6.25%). Of the sample of 32 patients, 17 belong to the male gender and 15 to the female gender; the middle age of the group was 52 years old with a range of age (26-80 years). Patients operated in the period of January 2015 to December 2016 were included. The procedures were assigned and carry out randomly by two specialist surgeons in column with standardization of surgical technique. clinical and radiographic monitoring was performed by the external consultation of column surgery in the two weeks and after a monthly period during a period of at least nine months, presenting a monitoring range between nine and 33 months, with clinical and radiographic valuation.

17 belonged to male gender and 15 to female gender; the average age was 52 years with a range of 26-80 years. To the 32 patients was performed an assessment of pain prior to surgery (eva) with an average of 7.6 Points and a post-surgical assessment of 1.2 Points on average, having a significant decrease, the qualitative radiographic evaluation by surgeons without development of adjacent disk disease in none of the cases even in those that were valued above 20 months after surgery. Complications: 1 rupture of transpedicular screw post-traumatic (3.1%), 1 Surgical reoperation by discopathy of l3-l4 (3.1%) and 3 cases of wound infection that remitted with antibiotic use (10%), the total complications corresponded to (15.6%) and none is associated with the disease of the adjacent disk.

The s14 system (b-fus) in our series of cases as a treatment for degenerative lumbar spine disease has proven to be an effective therapeutic option by reducing the risk of disease development of the adjacent disk.