Domelike decompression of the lumbar vertebral canal in the treatment of lumbar spinal stenosis / 中国矫形外科杂志

ABSTRACT

[Objective]To describe the clinical applycation of domelike decompression of the lumbar vertebral canal and evaluate the outcomes.To evaluate the effects on lumbar stability of domelike decompression through biomechanical canal study.[Method]Domelike decompress of the lumber vertebral canal were performed in 197 patients,with an average age of 52.7 and an average history of 6 years and 8 months,The surgicall outcomes were evaluated with modify Japanese Orthopedic Association Low Back Pain Score(M-JOA).Biomechanical study were performed on lumbar specimens from thirty fresh porcine model which were divided into three groups,Group A(n=10)was biomechanically tested after simulated laminectomy decompression,Group B(n=10)was biomechanically tested after simulated domelike decompression,Group C(n=10)was biomechanicaliy tested on intact,All were tested in flexion extension,torsion,and lateral bending and axial rotation moments as well as axial compressive loads.Load deflection curves were obtained each time,and stiffness values were calculated from the curves,Differences were checked for significance(P