Feasibility study on the treatment of lumbar spinal stenosis by visualization of the laminar drilling technique under DME:experiments on human specimens
ZHANG Hao
PAN Hui-hui
YE Chun-ping
Abstract：Objective To evaluate the feasibility of a visually controllable and positionable laminar drilling for the treatment of lumbar spinal stenosis in a single-channel dual-media spinal endoscopy by a human specimen study.Methods The donors were two fresh frozen human specimens,neither of which had a history of spinal surgery.A visual,controllable and positioning laminar drill combined with a single-channel dual-media spinal endoscope was used to decompress L1-2,L2-3,L3-4,L4-5,and L5-S1 on both sides of the five segmental approaches,all using a right approach.The time of channel establishment,C-arm fluoroscopic drill decompression time,fluoroscopy times,and decompression time on both sides of the under-lens approach were recorded.Results Ten segmental decompression procedures were successfully performed on two human specimens.The time to establish the channel was(4.28±1.42)min,the time to decompress the lower laminectomy drill by C-arm fluoroscopy was(2.75±1.08)min,the average frequency of fluoroscopy was 9,and the decompression time on both sides of the approach under the microscope was(22.04±7.32)min.Dural and nerve tissue injuries were not observed in 10 levels of decompression.Conclusions Our present results indicate that the visual controllable and locatable laminar drill is a safe,efficient and feasible technique for complete decompression of lumbar spinal stenosis by unilateral approach and bilateral decompression in single-channel dual-media spinal endoscopy.
Keywords：EndoscopesSpineSpinal stenosisHuman specimen
Publication Date：2025-07-19
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 602-606 )