Pain at the front of the knee
Aggravated by stairs, squatting, kneeling and prolonged sitting. Commonly related to load tolerance around the kneecap and control at the hip and foot, and typically managed with progressive strengthening rather than rest.
Tendon-related pain
Localised pain that warms up with activity and is worse the morning after. Responds to carefully dosed progressive loading; responds poorly to complete rest, which reduces capacity further.
Osteoarthritis
Stiffness after rest, pain with sustained load, variable day to day. Exercise therapy is a first-line recommendation in every major guideline, and it works by improving capacity and confidence, not by reversing imaging findings.
Return to sport or activity
Structured progression back to running, court sports or gym work after injury or a period away, built around measurable milestones rather than elapsed time.