Due to an editing error in the November issue, an inaccurate product description appears on page 30 of the “Revolution in rehabilitation” article. The following is a more precise representation of the technology: A drop foot functional electrical stimulation (FES) system, the WalkAide by Innovative Neurotronics, Austin, TX, uses a patented tilt sensor technology for timely stimulation of the peroneal nerves via surface electrodes causing the foot to dorsiflex (movement that brings the top of the foot towards the lower leg) at the right time during the gait cycle. Proper fitting will allow for more natural, efficient, and safe walking pattern, with or without footwear.