Anterior intramuscular transposition with ulnar nerve decompression at the elbow.
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The effectiveness of decompression and anterior intramuscular transposition of the ulnar nerve for treatment of severe cubital tunnel syndrome was evaluated. A consecutive series of 39 anterior intramuscular transpositions were reviewed. One surgeon performed the transpositions between 1993 and 1997 in 34 patients who presented with clinically severe cubital tunnel syndrome. Clinical outcome and satisfaction with surgery were assessed. The results showed early clinical improvement of 77% of patients (mean followup, 3.34 months). With repeated assessments later, the same group of patients had clinical improvement of 62% (mean followup, 30.9 months). Patients younger than 50 years, individuals who underwent external neurolysis, or patients who had a previously failed subcutaneous transposition had fewer satisfactory results.
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