Efficacy of Botulinum Toxin Injections in the Rectus Femoris to Treat Stiff Knee Gait Following Acquired Brain Injury

A total of 2 cc sterile normal saline: will be injected in 0.5 cc aliquots into 4 different injectate sites within the rectus femoris (with EMG guidance) of the involved limb.

200 Units BTX-A reconstituted with 2 cc sterile normal saline in 100:1 ratio. Teflon-coated EMG guidance for confirmation of injection into the Rectus femoris muscle in addition to utilizing standardized injection landmarks, the solution will be injected in 0.5 cc aliquots into 4 different injectate sites within the muscle.