Maybe ant. knee pain
Anterior knee pain
(patello-femoral dysfunction) is a commonly seen "overuse" injury that can appear after a person increases his training, changes running
surfaces, changes to different shoes, gets a separate leg injury that results in slight gait
changes, gets some weakness in the quads, etc.
.. A primary care, sports med, or orthopedic doctor's exam can help. Meanwhile, running less is helpful.