Objective To assess the feasibility of preparation of a small-field scalp in microvascular decompression(MD) in the treatment of trigeminal neuralgia(TN) and the facial spasm(FP). Methods Sixty-two female patients with TN or FP undergoing MD received only small-field scalp preparation.At operation,the region of operation and hair were covered by a piece of surgery paste film,the film was snipped at 2 mm away around the incision,the operative field was sterilized with 20 g/L tincture of iodine and 75% alcoho...