Problems from the knee give rise to symptoms such as pain, swelling, instability, catching difficulty negotiating stairs and stiffness. Symptoms of knee pain or instability can occur, if the knee has been injured or affected by disease such as arthritis. Following a knee injury, ligaments, tendon, cartilage and even the bone may be damaged.
Occasionally the components of the knee, such as the patella (knee cap) may not glide in the correct position as the knee moves (patella maltracking) this too can cause symptoms of knee pain and instability.
Knee pain and instability can also arise from disease processes such as arthritis.» Read more about the various Knee Surgery options.