[Comparison of two-year efficacy between procedure for prolapse and hemorrhoids and Milligan-Morgan hemorrhoidectomy in treatment of III and IV degree internal hemorrhoids].

Objective: To compare the long-term efficacy of procedure for prolapse and hemorrhoids (PPH) and Milligan-Morgan hemorrhoidectomy (MMH) in the treatment of III and IV degree internal hemorrhoids.

Methods: One hundred patients were randomly divided into two groups and received PPH (n=42) and MMH (n=58) respectively. After two years, the efficacy, complications and function of defecation were compared.