If any of you "hard core" exercisers and recoverers can help me with this question it would be much appreciated. My 21 year old son (injured nearly three years ago) has had a slow but encouraging recovery. He has weak triceps and quite good wrist extension/flexion as well as enough finger / palmar function to eat with a large handled fork and drink grasping a small water bottle. One very positive thing is that he has quite a lot of leg function -- more on the left than on the right. Since about one year after injury he has been doing partial weight supported gait training (suspended from a ceiling hoist while in rehab hospital, and using a mobile hoist with a special arm and sling now that he is at home). It was very slow at first -- up until three months ago the most he could do was about five or six independent steps with the left leg in a 30 minute session. Now he does this training four times a week for an hour and "walks" as far as 400 metres, moving the left leg independently and needing assistance with the right. We do this with him at home, and he also goes to physiotherapy at a hospital three times a week. The therapists there emphasise that in order to walk independently he must strengthen his core muscles. We are having him do kneeling exercises as well as reaching from a sitting position. My question: with a C5-C6 injury, which of the "core" muscles can be expected to be still active or recoverable? Any suggestions for other ways to strengthen these? As incomplete injuries are all different, this question may be impossible to answer, but I'd appreciate anything you can tell me about your own experience. Here's a link to a video of David "walking.'