Implanted infusion pumps are an effective method for delivering medications into the intrathecal space to reduce spasticity. Complications can occur with the surgical aspect of implantation, as well as with the hardware. We describe an 8-year experience with the implantation of 34 infusion pumps in 30 patients in whom either morphine or baclofen was used to control spasticity. The overall incidence of total complications was 62%; 24% in the Infusaid pumps, and 167% in the Medtronic pumps. The incidence and types of complications are important in informed consent as well as in the selection of pumps and connectors.