Fear of movement may exist in patients with knee cap pain. However, the most recommended intervention for knee cap pain is exercise, passive treatments are not likely to help.
Despite being quite common for patients with knee cap pain to be fearful of some movements (e.g. running, jumping and walking on stairs). Some studies report that reductions in fear of movement are related with reductions in the level of knee pain. Therefore, it is highly recommended for patients to keep doing all daily activities alongside the exercise program.
If you are not so confident to walking on stairs at the moment, you may find the following infographic helpful.