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  • Title: Endoscopically assisted release of the ulnar nerve for cubital tunnel syndrome.
    Author: Flores LP.
    Journal: Acta Neurochir (Wien); 2010 Apr; 152(4):619-25. PubMed ID: 20024689.
    Abstract:
    PURPOSE: Recently, the simple decompression of the ulnar nerve has been advocated as the best surgical approach for the treatment of the cubital tunnel syndrome. Encouraged by the positive results observed with the use of the endoscopic approach for the treatment of the carpal tunnel syndrome, there have been reports about the use of endoscopes for decompression of the ulnar nerve at the level of the elbow since 1999. The objective of this study was to demonstrate the surgical results obtained with a simple and replicable technique employed for endoscopic release of the ulnar nerve in cases of cubital tunnel syndrome. METHODS: It was retrospectively studied thirteen patients who presented signs and symptoms of cubital tunnel syndrome and who were operated on by an endoscopically assisted technique, from 2007 to 2009. The approach included the use of a 0 degrees lens neuroendoscope usually employed for ventricular endoscopy. Preoperative clinical and electrophysiological data were collected and compared to those observed 6 months after the surgery. The Dellon's scale was used for rating the severity of the lesions, and the postoperative outcome was assessed based on the Bishop rating system. RESULTS: All procedures were completed successfully via the endoscopically assisted approach, and no surgery had to be converted to an open operation. Postoperatively, 76.9% of the cases were completely free of signs and symptoms (8 and 9 points on the Bishop scale), 15.3% presented with light complaints (7 points), and only one subject (7.6%) reached 5 points on the outcome scale. Complete normalization of the electrophysiological studies was also observed in seven patients, most of whom were classified preoperatively as Dellon's grades I and II, but three of whom were classified as grade III. Normalization of the sensory conduction studies was observed in ten cases, normalization of the motor conduction studies in six subjects, and in four patients, there was improvement in electromyographic parameters. CONCLUSIONS: The endoscopically assisted approach for decompression of the ulnar nerve at the level of the elbow is a minimally invasive technique that demonstrated surgical results similar to those reported via the open approach. It may have additional advantages such as the reduction of soft tissue manipulation, faster mobilization of the arm, and quicker return of the patients to their daily activities.
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