This study is being conducted to compare healthy patients versus patients with muscle tightness in their leg(s) after an acquired brain injury using walking trials time, a balance test, and foot pressure data. This data is obtained using foot pressure sensors, timers, and distance walked.

This study is being conducted to demonstrate the objective utility of the use of pedobarography as a tool to differentiate normal controls from people with spastic gait as well as having utility in objectification of treatment effect on level surfaces and on a ADA based obstacle course.

Inclusion Criteria:

• Patients > 18 years of age
• Must wear shoe size 5½ - 11 US womens or size 6 - 13 US mens
• For treatment group be a clinical patient being treated for lower extremity spasticity

Exclusion Criteria:

• Age matched controls must have no significant neurological or orthopedic disease that would effect their gait
• Clinical patients who are unable to walk for 1 minute

Subjects ages > 18 years of age for this study. A total of up to 10 age matched controls and 30 clinical patients with lower extremity spasticity will be enrolled. Of the 30 clinical patients, 20 clinical patients will have received BOTOX ® injections from their clinical physician after their first visit.