abductors?

I know there are those machines at the gym that train you (while sitting down) either to close your legs or spread your legs against resistance---and I heard that Betz patients will do these exercises at minimum resistance levels to help retain flexibility/strength in them or something, not sure

I'm wondering if there are any other stabilizing muscles I should consider training and which machines to use after femur LL. I'm leaving Athens about 6 months after my femur gnail surgery and then I'll go back to the USA and there is a gym a few minutes drive from my parent's home