Knee Pain Going Down Stairs

Knee pain going down stairs usually indicates a problem with the knee cap (patella) and how it moves.

The kneecap is a small bone, shaped like an upside down triangle which sits in the patella groove at the front of the knee and glides up and down as the knee moves.

Huge forces go through it with every day activities. As a result, the back of the patella is lined with the thickest layer of cartilage in the whole body as it is designed to withstand massive compressive forces.

Knee pain going down stairs is most commonly caused by a problem with the kneeca

Knee pain going down stairs is not surprising when you consider that the force going through the patella is 3.5x body weight when you come down the stairs (normal walking only puts a force of 0.5x body weight). That means for a person weighing 120lbs, when they come down stairs, a force of 420lbs goes through the kneecap which has a contact surface area of only 12cmsq.

Anything that interferes with how the patella moves, or that affects the cartilage lining the knee cap will magnify these huge forces and lead to knee pain going down stairs.

Common Causes

There are three common causes of knee pain going down stairs:

1) Runners Knee

Knee pain going downstairs usually indicates a problem with the knee cap aka patella

This is also known as Anterior Knee Pain or Patellofemoral Pain Syndrome and is the most common cause of knee pain going down stairs.

What is it: A problem in the way the patella moves
Causes: Muscle tightness/weakness, flat feet, abnormal anatomy
Symptoms: General ache and knee cap pain, grinding, mild swelling
Aggravating Activities: Repeated activities, stairs, prolonged inactivity
Who Does it Affect: Can affect anyone, at any age, whether they are active or not. Accounts for approximately 25% of all knee injuries seen in sports injury clinics
Treatment: Visit the Runners Knee section

2) Chondromalacia Patella

Knee pain going downstairs is often caused by a problem with the cartilage on the back of the kneecap

What is it: Damage to the cartilage on the back of the kneecap
Symptoms: Achy knee cap pain, swelling, clicking/grinding
Aggravating Activities: Getting up from sitting, sports, pressure through the kneecap, stairs
Who Does it Affect: Most common in young, healthy people. More common in women.
Treatment: Visit the Chondromalacia Patella section

3) Osteoarthritis

What is it: Degenerative changes (wear and tear) in the knee bones and cartilage
Symptoms: Morning stiffness, pain, swelling, clicking/grinding, reduced knee movements
Aggravating Activities: Worse after prolonged rest, activity, cold weather, stairs
Who Does It Affect: Most common over the age of 50.
Treatment: Visit the Arthritis section

Want To Know More?

To find out about these common causes of knee pain going down stairs, click on the links above.

Of course, lots of knee problems will feel worse on the stairs, but these are the three problems where knee pain coming down stairs is one of the most prominent features.

If none of these are sounding like your problem, visit the knee pain diagnosis section, for help working out was is causing your pain, and to learn what you can do about it.

Forces Through The Knee Cap

Walking: 0.5x body weight
Climbing Up Stairs: 2.5x body weight
Going Down Stairs: 3.5x body weight
Squatting: 7-8x body weight

Go to Diagnosis Section or Homepage


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