Why does knee osteoarthritis cause limping?

When the joint hurts during a step, you may spend less time on that leg and shift weight to the other side. Swelling or stiffness can limit full bending or straightening, shortening the stride and making the walking pattern uneven. Weakness in the thigh muscles may also reduce control as you stand, climb stairs, or rise from a chair. A limp can therefore be the body’s way of reducing load on an irritable knee; its presence does not identify one cause by itself.

Notice when the limp appears, such as after rest, on stairs, or after a longer walk. A clinician or physiotherapist can assess knee movement, muscle strength, footwear, and walking mechanics. Treatment may include paced activity, strengthening around the thigh and hip, mobility work, and advice on supportive equipment when appropriate. Avoid pushing through a sharp increase in pain, and use the plan that matches your examination.

Arrange an assessment if the limp persists, is worsening, or limits ordinary activities. Seek prompt care after a significant injury, or if the knee becomes suddenly very swollen, hot, red, locked, or difficult to bear weight on. Fever with a hot swollen joint also needs urgent medical attention.

Could pain, stiffness, weakness, or another problem be driving my walking pattern? Which exercises are suitable for my knee? Would a walking aid or footwear change improve safety? How should I pace activity during a flare?