Trial Outcomes & Findings for Clinical Study to Evaluate the Implantation of the ActiGait Drop Foot Stimulator System (NCT NCT01116466)

Clinical Study to Evaluate the Implantation of the ActiGait Drop Foot Stimulator System

The test assesses distance walked over 6 minutes as a sub-maximal test of aerobic capacity (endurance). At baseline this test was done with subject's conventional walking aid. At 6 and 12 weeks post-implantation this was done with and without stimulation.

The test assesses walking speed in meters per second over a short duration. At baseline this test was done with subject's conventional walking aid. At 6 and 12 weeks post-implantation this was done with and without stimulation.

A semi-structured interview is conducted in order to identify subject's limitations with daily occupations of importance in categories self-care, productivtiy or leisure. The subject is then asked to rate the imporance of each of the occupations using a 10-point rating scale. Afterwards the subject chooses up to 5 of the most important occupations (problems) (basis for identifying intervention goals). The subject is asked to use a 10 point scale to rate level of performance and satisfaction with performance for each of the five identified problems. Average COPM performance score and satisfaction score are calculated. The scores range between 1 and 10, where 1 indicates poor performance and low satisfaction, respectively, while 10 indicates very good performance and high satisfaction.

It is a test of dynamic balance that clinically assesses the person's ability to step over objects forward, sideways, and backwards. The patient's time to perform the test is measured which shorter time representing better performance. At baseline this test was done with subject's conventional walking aid. At 12 weeks post-implantation it was done with and without stimulation.

Measured: Nervus peroneus communis (CPN) and Nervus peroneus superficialis (SPN)

MRI will be conducted to evaluate the impact of the implant on the common peroneal nerve (e.g. positioning of the nerve cuff along the nerve, path of the lead wire and the common peroneal nerve, estimation of the cross-sectional area of the common peroneal nerve compared to the pre-operative MRI recording, etc.). The outcome will be quantified by surgeon's judgement whether the final implant position is consistent with safe application of the ActiGait® implant as described in the manufacturer's surgical manual. Number of safe and successful implantations will be counted.