gussie - re changing running style:
(I want to tell you a bit about this, because I think your patients could really benefit from it. I certainly wish any one of the four physios I went to over 12 months had pointed me in this direction)
Since changing my running style to a midfoot strike, my knees have stopped hurting and the calcifying tendinopathy on my hip has disappeared. For this, I read the book (Born To Run - Christopher McDougall) and watched YouTube clips of heel strike vs midfoot/forefoot strike. Most importantly, I changed my shoes - 'bye-bye' to well-cushioned but practically zero-support Nike shoes and 'hello' to proper running shoes with real support. Basically, the less the thick soft heel cushion, the less you can land on your heel (because it bloody hurts). I strongly recommend all runners to go for gait analysis at a specialist shop before they buy their running shoes.
To get a feeling for midfoot strike, recommend your patients to run with just their socks on the treadmill or barefoot on sand (where possible) for a while. Take it slow, building up from about 5 minutes per session, because this running style uses different muscles than heel strike. Then, when they put their running shoes on, they will be able to continue with this style. Especially if they have also changed their heavily cushioned shoes by then.
Midfoot strike shortens your stride, which (1) lessens the impact, and (2) changes the angle at which the impact travels through joints & muscle, with the arch of the foot absorbing impact etc.
There is a lot of info about all this online. Please take the time to look into it and share it with your patients.