Difference of two needle-placement technique in radiofrequency ablation for treatment of lumbar facet syndrom

51 patients whom have chronic back pain and seen from september 2015 to january 2016 ,are selected from Ege University hospital algology department for our research. The research is planned as a randomized, single blinded, prospective study. Patients who have positive diagnostic test block and do not have rejection criteria are added to the research. They are divided into two groups and conventional radiofrequency is applied in the operation room. In first group we used a anterior-posterior technique and in second group an oblique technique is being used. The groups are investigated for visual analog scala, beck depression test, patient satisfaction, 20 metres walking test, 6 minutes walking test, oswestry scala, SF-36 life quality indeks and additional medical treatment requirements. No any additional side effects are seen. These parametres are looked preoperative, 1.month and 3. Month postoperatively. In all groups and tests no difference is found according to our study results.