A. A. The Richard Wolf YESS endoscope facilitates endoscopic documentation of pathoanatomy. The uniqueness of the YESS scope is the 2.8mm working channel.

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A. A. The Richard Wolf YESS endoscope facilitates endoscopic documentation of pathoanatomy. The uniqueness of the YESS scope is the 2.8mm working channel with integrated distal irrigation ports that keep the lens clear of blood that may otherwise obscure Intradiscal and epidural visualization. B. In addition to custom instruments used by the senior author (ATY), Wolf has a full complement scopes and instrumentation designed for disc inspection, disc excision, foraminal decompression, and ablation. An additional complement of scopes with working channels and instruments offer operating ports of 2.2, 2.8, 3.1, and 4.2mm are used for discectomy, rhizotomy, foraminoplasty and for the trans foraminal and translaminar approach to the lumbar spine. Satishchandra Gore, and Anthony Yeung Int J Spine Surg 2014;8:28 Copyright © 2014 ISASS - International Society for the Advancement of Spine Surgery