I ordered a compex SP4 from total wellness, service was excellent received machine next day and followed up with a video call to talk me through the set up .
I was advised to use this by my consultant after a total knee replacement left me with muscle atrophy on my quadriceps, unable to lift my leg independently and using bands or hands to lift leg into bed , into car etc there was no link with my muscle and brain.
After one week of using twice a day I had a little miracle my quads appear to be responding well and I can now lift my leg in a leg raise and I am now not using any hands to get into car or bed ! There is still a lot of work to be done but this has totally spurred me on to keep going with the hard work.
I do exercise with the compex set up to make full use of contractions !
Totally recommend this if you find yourself in the same situation and your quads are not activating.