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How I developed the world's first evidence-based endoscopic management of carpal tunnel syndrome.

Carpal tunnel syndrome has been surgically treated by release of the transverse carpal ligament (flexor retinaculum of the hand) using a blind procedure since 1930 or by an open procedure since 1946. The blind procedure has the possibility of unreliable results and ensuing complications, hence, the open procedure was developed. The open procedure, however, also resulted in various complications as reported in the 1970s. At the end of the 1970s, I had many questions regarding accepted surgical procedures for treatment of carpal tunnel syndrome. These included: "Why should any healthy tissue be injured?"; "How can I make operations as minimally invasive as possible?"; and "How can I shorten postoperative fixation periods that cause declines in activities of daily living?" This paper describes how I developed the world's first evidence-based endoscopic management procedure for carpal tunnel syndrome using local anaesthesia without a pneumatic tourniquet on an outpatient basis.