Thanks, I have been doing squats and these exercises

It does seem I have been doing all the right things

With the calf exercises, I have been stacking weights and then dropping my heels and then coming up on my toes, 3-4 sets, 10-12 reps

Leg raises with 75-85 kilos, and about the same with hamstring exercises

I have also been doing as much stretching exercises asI can (ham strings, thigh muscles)

I guess it will be up to luck now, done pretty much all I can do now (been doing all these exercises for 3-4 months

Plus plenty of walking up inclines, long slow slopes that never seem to end

I will be wearing boots most of the time I am walking, but I daresay sandals will be worn at some point

Thanks very Fyzzio, your advice has been appreciated