Agree with all of the above, especially not to wear a support all the time! If you do get a problem just slip it on before a big descent or climb and remove it afterwards.
The reasons pilgrims get ligament problems are pretty straightforward ... they don't do warm up exercises, they walk too far each day when their bodies aren't acclimatised to that, they walk too fast each day, their strides are too long, they don't listen to their bodies, and their packs are too heavy.
The Roman legions marched with very short steps, ridiculously short steps, and they were able to march long distances laden with kit (and two poles to build their night camp) day after day without harm - so short steps, not long strides!
The weight thing - try this. Stand up straight (no pack) and relax with your arms down by your sides and try to be aware of the front of your legs .. now turn your elbows out slightly and bend just slightly forward from the waist up - you will immediately feel all the muscles, tendons, and ligaments at the front of your legs, all the way down, go into tension - this is what happens when you wear a pack, as your body tries to counter the backward pull of the pack weight and maintain a centre of balance.
Ok, you have tried that? Did you feel that? Then this is why you really absolutely have to have a light pack because if all that is under stress before you have even taken a step then you are going to have ligament, tendon, shin splint problems - so pack light!! Or do the Aarn pack concept and have a bag at the front to balance the weight so you stand relaxed at your normal centre of gravity.
Buen Camino!
