A total of 109 dismembered pyeloplasties has been reviewed and examples of initial complications and their management are discussed. These early complications do not preclude excellent long-term results. Over-all followup studies show resolution of pain, hematuria and infection in the vast majority of patients. X-ray results have since, in general, improved or stabilized. No nephrectomies have been done subsequent to the repair of the hydronephrosis.