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  • Title: Retractor-endoscopic nerve decompression in carpal and cubital tunnel syndromes: outcomes in a small series.
    Author: Martin KD, Dützmann S, Sobottka SB, Rambow S, Mellerowicz HA, Pinzer T, Schackert G, Krishnan KG.
    Journal: World Neurosurg; 2014; 82(1-2):e361-70. PubMed ID: 24056216.
    Abstract:
    OBJECTIVE: To present midterm to long-term results obtained in carpal tunnel release, in situ decompression, and anterior transposition of the ulnar nerve using the retractor integrated endoscope. METHODS: During the period 2000-2010, 145 patients underwent endoscopic carpal tunnel releases (n = 47), endoscopic in situ decompression of the ulnar nerve (n = 55), and endoscopic anterior transposition of the ulnar nerve (n = 52). Bilateral surgery was performed in 9 patients. Independent examinations at 24 months after surgery were used for objective results (Bishop score). Subjective results were procured using a questionnaire. RESULTS: After endoscopic carpal tunnel release, 59.6% of patients showed excellent results, 21.2% showed good results, 12.8% showed fair results, and 6.4% showed poor results according to objective scoring. In 85% of patients, subjective improvement was noted after surgery; symptoms were the same as before surgery in 12.8% of patients and were worse in 2.1% of patients after surgery. After endoscopic in situ decompression, 56.4% of patients showed excellent results on objective scoring, 32.7% showed good results, 9.1% showed fair results, and 1.8% showed poor results. On subjective questioning, 72.7% of patients reported improvement, 20% reported no change in symptoms, and 7.3% reported worse symptoms. After endoscopic anterior transposition of the ulnar nerve, 48.1% of patients showed excellent results on objective scoring, 26.9% showed good results, 23.1% showed fair results, and 1.9% showed poor results. Subjectively, 65.4% of patients reported improvement, 26.9% reported no change in symptoms, and 7.7% reported worse symptoms. Patients with symptom duration of <9 months before surgery showed better results than patients with symptom duration of >9 months. CONCLUSIONS: The retractor-endoscopic technique provides good long-term results after carpal tunnel release, in situ decompression, and anterior subcutaneous transposition of the ulnar nerve. Outcomes showed some correlation to the duration of preoperative symptoms.
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