Proper alignment decreases abnormal stress and leads to efficient, pain-free movement. Knee pain comes from multiple sources, from stress on bones, ligaments and tendons to actual injuries in those areas.
Cartilage Problems
Cartilage cushions joints so they move more smoothly against each other.
Bone Fractures
Improper use or overuse can cause tiny breaks in the bone.
Tendon Injuries
Poor alignment and improper movement can cause injury to the patella (the kneecap) and iliotibial band syndrome (pain on the outside of the knee).
Arthritis
The knee feels painful and stuff, and may even become deformed.
Injuries of Knee Stabilizers
Very active individuals can experience tears or wearing out of ligaments that keep the knee working efficiently in movement. The meniscus is a commonly injured ligament.