Aim:To investigate and compare the therapeutic efficiency and radiographic measurement between transforaminal approach and interlaminar approach in percutaneous endoscopic discectomy.
Material and Methods:From Jan 2017 to Jan 2018, 86 patients with single lumbar disc herniation were collected in this retrospective analysis and divided into percutaneous endoscopic transforaminal discectomy (PETD) group and percutaneous endoscopic interlaminar discectomy (PEID) group according to different surgical approaches. All the cases underwent normal imaging examinations included another MRI of lumbar spine within a week postoperative. The clinical efficacy were calculated to evaluate the clinical effect of therapy by Oswestry Disability Index(ODI) and Visual Analogue Scale(VAS) at 1day pre-operation, 3 months post-operation, 1 year post-operation and the last follow-up visit.
Results:All patients were followed up for above two year. 44 patients were enrolled in PETD group and 42 patients in PEID group separately. The symptoms showed evident improvement after surgery, but there were no significant differences regarding VAS scores, ODI scores, spinal canal occupation rate and lumbar lordosis except disc height and pfirrmann grade between the two groups(P>0.05). Revision surgery rates at the last follow-up point were 2.3% and 4.8% in PETD group and PEID group respectively (P=0.612).
Conclusion:Approaches of PEID and PETD are pivotal to address lumbar disc herniation (LDH) disease. Selection of surgery approach depends on anatomical structure, physiological characteristic and operative skill of the surgeon.
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