Objective: To evaluate outcome and potential advantages of a percutaneous posterior approach to burst fractures of the thoraco-lumbar junction without neurological complications by means of a technique combining balloon kyphoplasty and percutaneous pedicule screw fixation.
Methods: In this preliminary study patients who suffered traumatic of the thoraco-lumbar junction presented a Magerl type A3 fracture. The mean age of the patients was 64 years (54-78 years). All had a normal neurological examination. A combined technique using balloon kyphoplasty, that allows restoration of the vertebral height and fixation by means of cement injection with percutaneous osteosynthesis was performed as a minimal invasive alternative treatment. Mean follow-up (plain radiograph and CT scan, pain assessment) was 12 months (range 5-14 months).
Results: All patients experienced an early pain relief, successfully mobilized on day 1 after surgery and discharged after a mean stay of 4.5 days. Immediately postoperatively the mean vertebral height restoration was 11.5% and the reduction of the kyphotic angle was 9 degrees. Those results were maintained over the complete follow-up period. Only one patient required analgesic treatment with weak opioids (step II of the WHO pain ladder) 3 months after surgery.
Conclusions: The treatment of burst fractures of the thoraco-lumbar junction with no neurological complication by associating minimally invasive techniques results in good fracture reduction and stabilisation. The main advantage of this approach is to shorten the hospital stay.
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