Did mine in March this year (and ACL & Quadriceps tendon). Had to wait 6 weeks for the MRI scans to come back before even the (private) physio would touch it. During that time he recommended gentle cycling without too much stood up riding. This helps the joint stay mobile, working it in its natural range of motion without too much impact or pressure going through it. It also helps maintain the muscle tone/offsets atrophy pre-operation if the MRI scan suggests this is needed.
Luckily for me the damage wasn’t too bad so surgery wasn’t needed; then the physio set to work… Beeeejeezuussss…!!!!
It actually started feeling better straight away. After about 6 weeks I managed a week in morzine, and although the hard & fast stuff was difficult (painful) – the stuff where you’re stood with knees bent taking your weight through your quads in the typical “attack position”; it was all doable with plenty of mid & post ride stretching.