It's hard to imagine self propelled rollerskates without thinking about coyote's:     http://home.nc.rr.com/tuco/looney/acme/rocketp.jpg http://home.nc.rr.com/tuco/looney/acme/acmerocketp.jpg    Don't tell me you want a pair of these, they never turned out well for poor coyote... :rofl      Now seriously, sorry to hear about your injury, you could eat the Aloe plant, it tastes awful but it's extremely good for injuries...    or you could try one of those motorized walking aids... I forgot the name... the one that has two wheels, one on each side and a driving stick, you stand on it and it drives you around... it's quite popular and it's been featured on tv many times... I forgot the name....