Hi.

1 a or b is ok - the purpose of a support is to protect the limb involved. Therefore any combination where the frame/crutches then the right leg (affected one) in the middle of the sequence is usually correct during walking.

2 - Good foot goes to heaven, bad foot goes to hell. Crutches stay with the bad foot. Therefore to ascend stairs, it is good foot first (to heaven), then bad foot (always in the middle) then crutches. Descending is the reverse order...

3. ?? - Don't do amputees

4. a - Hip flexion if i had to answer but hip flexor strength is useful for improving walking and ground clearance i would have thought. hoever, if they were elderly and sitting around all day, then it is not so important...

Good luck - are you a student or a qualified physio??