Turkish Neurosurgery 2013 , Vol 23 , Num 3
Unilateral Percutaneous Pedicle Screw Instrumentation with Minimally Invasive TLIF for the Treatment of Recurrent Lumbar Disk Disease: 2 Years Follow-Up
Erkin SONMEZ1, Ilker COVEN2, Fikret SAHINTURK1, Cem YILMAZ1, Hakan CANER1
1Baskent University, Faculty of Medicine, Department of Neurosurgery, Ankara, Turkey
2Baskent University, Konya Training and Research Hospital, Department of Neurosurgery, Konya, Turkey
DOI : 10.5137/1019-5149.JTN.7122-12.1 AIM: To compare the clinical and radiological outcomes of recurrent disk disease in patients who underwent unilateral and bilateral percutaneous pedicle screw instrumentation with Mis-TLIF.

MATERIAL and METHODS: 10 patients treated with unilateral percutaneous instrumentation plus Mis-TLIF formed Group 1 while the other 10 patients treated with bilateral percutaneous instrumentation plus Mis-TLIF formed Group 2. Clinical outcomes were graded using the visual analog scale (VAS) and the Oswestry disability index (ODI) scores. Peroperative and 2-year follow-up scores were obtained. Postoperative imaging techniques were used for the assessment of fusion, subsidence and spinal alignment.

RESULTS: According to preoperative and postoperative VAS/ODI scores, statistically significant differences were noted in the unilaterally and bilaterally instrumented group. However, a statistically significant difference was not observed between the unilateral and bilateral groups. Radiological evidence of successful arthrodesis was noted in 8 of 10 patients (80%) in the unilaterally instrumented group and in 9 of 10 patients (90%) in the bilaterally instrumented group at the 2 years follow-up. No metal failure, cage migration, vertebral fracture, subsidence or adjacent level disease was experienced.

CONCLUSION: Mis-TLIF with unilateral percutaneous pedicle screw instrumentation is an excellent option in the treatment of selected recurrent disk disease patients. Keywords : Unilateral, Pedicle screw, Minimally invasive, TLIF, Recurrent disk disease

Corresponding author : Erkin Sonmez, erkinso@gmail.com