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Fig. 1 | BMC Musculoskeletal Disorders

Fig. 1

From: Clinical outcomes of transforaminal endoscopic lateral recess decompression by using the visualized drilled foraminoplasty and visualized reamed foraminoplasty: a comparison study

Fig. 1

The instrumentation for visualized reamed foraminoplasty technique. a The sequential dilator and guide rod were applied to establish the portals once the 18-gauge needle was properly inserted. b The specially designed eccentric guide rod was inserted through the guide wire and secondary guide rod if the guide wire was not positioned at the target location, and we could change the direction of the guide wire by rotating the eccentric guide rod. C A half-serrated working cannula was inserted along the eccentric-shaft obturator for repositioning. d A special reamer was designed for the resection of osteophytes under the endoscopic system; e A sharp, bevel-ended working cannula was used for the decompression of the nerve roots

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