Wear and tear is the wrong model
Cartilage is living tissue that adapts to load. It thins with too little use as readily as with too much.
MoPro
Trainer's Eye
Six gentle movements that restore the bend, switch the quadriceps back on and move fluid through the joint. No standing load, no pain.
Cartilage is living tissue that adapts to load. It thins with too little use as readily as with too much.
Even a small effusion inhibits the quadriceps reflexively. Settle the swelling and the strength returns faster.
Joint fluid carries the nutrition. Gentle repeated motion is how cartilage gets fed.
Three couplets · two rounds · twelve minutes · a knee that carries you
Lying down, slide the heel toward the buttock as far as comfort allows, then straight.
Easier towel under the heel · Harder hold two seconds at the end
Knee straight; press the back of the knee down and tighten the thigh for five seconds.
Easier shorter holds · Harder small towel under the knee
Point and flex the foot fully and briskly — this is the calf pump that clears swelling.
Easier smaller range · Harder add ankle circles
Knee locked straight; lift the whole leg to the height of the other thigh, lower slowly.
Easier smaller lift · Harder 3-s lowering
Sitting tall, straighten the knee fully, squeeze the thigh one second, lower slowly.
Easier smaller range · Harder hold at the top
Heels close to the hips; drive through the heels, squeeze, stop at a straight line.
Easier smaller range · Harder 3-s hold at the top
Each couplet: 60 s scored → the loading set → 10 s to move on. Done at 12:00.