Patella maltracking (or patella femoral pain) is a common occurrence in the sporting knee. It is an overuse injury where the patella is slightly pulled out of its normal position causing irritation and inflammation under the knee cap as it rubs against other structures.
Patella maltracking can be caused by tightness in soft tissue such as the tensor facea latae, rectus femoris, vastus lateralis and potentially bicep femoris. As a result the vastus medialis may also be weak and unable to counter act the tight muscles pulling the patella out or up. As a result the tight muscles need to be released of through soft tissue work and the vastus medialis strengthened. With the primary cause being dealt with taping the knee can help reduce pain and re-educate the movement patterns required.
Below is a video on how to tape your knee to reduce pain and allow you to exercise and strengthen your knee.