Research suggests that combining therapies could result in important gains in restoring function and improving quality of life in persons with spinal cord injury (SCI). Locomotor training is an activity-dependent rehabilitation therapy that provides repetitive stepping facilitated by manual assistance and body weight support on a treadmill. Recent studies report improvements in walking and standing in individuals with motor incomplete SCI that have undergone intensive standardized locomotor training therapy. Extended release dalfampridine (also known as fampridine or 4-aminopyridine [4-AP]) is a broad spectrum potassium channel blocker that has been shown in animal studies to increase conduction of action potentials in demyelinated axons. Dalfampridine was recently approved by the U.S. Food and Drug Administration (FDA) as a treatment to improve walking in persons with multiple sclerosis (MS). Demyelination is also a prominent feature of incomplete SCI that contributes to the clinical presentation of persons with these injuries.~The purpose of this study is to determine the efficacy, safety, and tolerability of treatment with dalfampridine in combination with locomotor training in persons with chronic, motor incomplete SCI. We hypothesize that persons undergoing combination therapy with dalfampridine and locomotor training will show significantly greater improvements in walking speed and other measures of SCI function than those receiving locomotor training alone.
The purpose of this study is to determine the efficacy, safety, and tolerability of treatment with dalfampridine in combination with locomotor training in persons with chronic, motor incomplete SCI.