Orthopedic surgery in children with intrathecal baclofen pumps.

AIMS: Children with cerebral palsy often have severe spasticity leading to deformity that requires multiple orthopedic surgeries. Intrathecal baclofen pump implantation effectively decreases severe spasticity. The objective of this study was to determine whether children who have a baclofen pump implanted at a young age have fewer orthopedic surgeries than those who have a baclofen pump implanted at later ages. METHODS: In this retrospective study of 310 children, we compared occurrence of surgery in relation to having or not having the baclofen pump, by using survival analysis with surgery as the outcome, presence of baclofen pump as the exposure of interest, modeled as a time-dependent variable, and age as the time scale. RESULTS: There was no significant effect of pump placement on overall surgery frequency. Analyses by type of surgery showed that those without a pump in place had a 64% lower hazard of scoliosis surgery. CONCLUSIONS: No evidence was found to indicate that children who have a baclofen pump implanted at a young age have fewer orthopedic surgeries than those who have a baclofen pump implanted at later ages.

Care provider assessment of intrathecal baclofen in children.

Intrathecal baclofen is used increasingly to manage severe spasticity in children. Before implanting the baclofen pump, care providers typically ask how it will benefit their child. The purpose of this study was to describe the perceptions of care providers about intrathecal baclofen for management of spasticity in 80 individuals (52 males, 28 females). The individuals were younger than 22 years at the time of implantation (mean age 11 years, SD 5 years; range 3 to 21 years). Participants had been implanted with the pump for a minimum of one year at the time of evaluation. The most common diagnoses were quadriplegic and diplegic cerebral palsy and traumatic brain injury. Most participants were at level IV and V on the Gross Motor Function Classification System. After pump implantation most participants had tone reduction on the Ashworth scale of 1 to 1.9 in the lower extremities and 0 to 0.9 in the upper extremities. Lower extremity range of motion was maintained in 43 of 51 individuals (84%) and lost in 8 participants (16%). Complications requiring surgery occurred in 63 of a larger group of 152 patients (incidence per patient-year of follow-up was 0.19). Thirty-one of the 80 children had orthopedic procedures after pump placement. Only one of these was unexpected and none had rapid progression of scoliosis. Most treatment goals were achieved. Goals most commonly chosen (decreased pain, prevention of worsening of deformity, and improved ease of care) were improved in 91%, 91%, and 88% of participants respectively. Ninety-five per cent of care providers agreed that they would have this procedure performed again (81% strongly agreed, 14% slightly agreed). All care providers reported improvement in scores on the Caregiver Questionnaire. This information has been helpful to families considering intrathecal baclofen therapy.