Knee pain when descending stairs is often caused by Patellofemoral Pain Syndrome, IT Band Syndrome, or Osteoarthritis. As you step down, your knee absorbs extra force, increasing pressure on the joint and surrounding structures. Weak quadriceps, poor alignment, or inflammation can worsen the pain. Strengthening exercises like step-downs and leg raises can help improve stability and reduce strain.”
Here’s we’ll cover the causes of knee pain going down stairs, symptoms and solutions.
Anatomy of the Knee Joint
To understand knee pain you need to know the anatomy of the knee joint. Knee pain is a work of engineering.
The knee is made up of several bones:
- femur (thigh bone)
- tibia (shin bone)
- patella (kneecap)
- fibula (calf bone)
Each bone plays a part in the knee’s function and stability.
Articular cartilage, a smooth tissue, covers the ends of the bones, stabilizes the kneecap, cushions the joint and reduces friction during movement. The menisci, two C shaped cartilage structures, act as shock absorbers, distributing the load across the knee. This set up allows our knees to handle daily stress.
Ligaments are also important: cruciate ligaments control forward and backward movement, collateral ligaments control side movement. They work together to keep the knee stable and functional.
Synovial fluid lubricates the knee joint, reduces friction during movement. There are two main joints in the knee, the tibiofemoral joint (between the femur and tibia) and the patellofemoral joint (between the femur and patella).
This complex arrangement of bones, cartilage and ligaments makes the knee very mobile but also prone to pain when things go wrong.

Knee Pain Going Down Stairs
Knee pain when descending stairs often comes from joint problems especially around the kneecap. When you descend stairs it can make the pain worse.
A common culprit is Patellofemoral Pain Syndrome (PFPS) where the kneecap is under more stress and pain occurs during activities that involve knee flexion like descending stairs. IT band syndrome is another common cause where outer knee pain is caused by repeated bending and overuse. These conditions can make each step down painful.
Osteoarthritis is another contributor to knee pain when descending stairs. This degenerative joint disease is caused by cartilage breakdown and painful bone on bone contact. Excess body weight can add to knee stress when descending stairs and make the pain worse. Irritation of the bursa around the knee joint can also cause a lot of discomfort.
Knee pain when going down stairs can be due to
- PFPS
- IT band syndrome
- Osteoarthritis
- Excess body weight
- Bursa irritation
Knee Pain When Descending Stairs Symptoms
Pain when descending stairs can be mild to severe and can be occasional or persistent.
A common sign of Patellofemoral Pain Syndrome (PFPS) is anterior knee pain, with grinding sensations and swelling, that worsens during activities that involve knee flexion like descending stairs. You may also feel stiffness and discomfort after prolonged inactivity.
Osteoarthritis has symptoms like grinding, clicking, inflammation and stiffness especially during weight bearing activities like going down stairs. These symptoms are often more pronounced in the morning or after rest.
Watch out for:
- Anterior knee pain
- Grinding or clicking sounds
- Swelling and inflammation
- Stiffness, especially after inactivity
- Pain that worsens during stair descent
Patellofemoral Pain Syndrome (PFPS)
Patellofemoral Pain Syndrome (PFPS) or runner’s knee is a common cause of anterior knee pain that worsens during activities that involve knee flexion like going down stairs.
PFPS symptoms include anterior knee pain, grinding or clicking sounds and stiffness after physical activity. Risk factors for PFPS are activities that increase knee stress that leads to cartilage breakdown under the kneecap. This condition can affect anyone of any age but more common in athletes and those who do repetitive knee bending activities.
PFPS affects the knee joint and causes pain and discomfort during functional activities.
Chondromalacia Patella
Chondromalacia Patella is the breakdown and softening of the cartilage under the kneecap that causes knee joint pain and discomfort. Overuse, injury or misalignment of the kneecap can cause this condition.
Pain from chondromalacia patella is from the rubbing between the thigh bone and the kneecap that causes a lot of pain during activities that involve knee flexion like descending stairs.
Osteoarthritis
Osteoarthritis is a degenerative joint disease that causes cartilage loss that results to bone on bone contact during activities like stair descent. It is common among older adults and those with history of knee injuries.
More than 80% of knee osteoarthritis patients experience significant pain during weight bearing activities like descending stairs that affects daily activities and overall quality of life.
Being healthy weight helps manage knee osteoarthritis as excess body weight adds stress to the knee joint that accelerates cartilage wear and worsens pain.
IT Band Syndrome and Knee Pain
Iliotibial (IT) band syndrome is a common cause of knee pain especially among runners and athletes that involves irritation of the IT band tendon that connects the pelvic bone to the knee.
As you can see, Pain from IT band syndrome is felt on the outside of the knee, often triggered by repetitive motion that causes friction between the IT band and the lateral knee. This pain is more pronounced when descending stairs or sitting for a long time.
Knee Pain Diagnosis
Proper diagnosis of knee pain is key to treatment. The first step is a physical exam to assess the condition, often followed by X-rays to check the knee structure and look for abnormalities. More tests may be needed depending on the physical exam findings and symptoms.
See a healthcare provider for further evaluation if you have severe knee pain that affects daily activities or sleep. Go to the ER if the knee joint is deformed or cannot bear weight.
Key steps:
- Physical exam
- X-rays
- Additional testing if needed
- See a healthcare provider for persistent pain
- Go to the ER for deformities or cannot bear weight
Treatments for Knee Pain
Effective knee pain treatment starts with the RICE method:
- Rest
- Ice
- Compression
- Elevation
This will reduce pain and swelling.
Physical therapy is another option, strengthening the muscles around the knee to improve stability and mobility. Personalized treatment plans may include supportive aids like elastic sleeves, taping, bracing and customized exercises.
Knee Pain Going Down Stairs But Not Upstairs
If you experience knee pain going down stairs but not upstairs, it’s likely due to increased stress on the patellofemoral joint and surrounding structures. When descending, your knee absorbs more force to control movement, putting pressure on the cartilage, tendons, or ligaments.
Common causes include patellofemoral pain syndrome, quadriceps weakness, or meniscus issues. Strengthening your quads, improving hip stability, and using proper stair descent techniques can help.
Studies show that 40% of people with knee osteoarthritis report increased pain during descent due to higher joint stress. Going downstairs places 3.5 times your body weight on the knee, compared to 2.5 times when ascending.
Unexpected, right?
This pain often stems from patellofemoral pain syndrome (PFPS) or weakened quadriceps failing to control movement. Research indicates strengthening exercises can reduce pain by 40% in six weeks.
If you have persistent discomfort, a doctor can assess potential cartilage damage, ligament strain, or meniscus issues. Proper footwear and physical therapy help.
Exercises to Strengthen Surrounding Muscles
Strengthening surrounding muscles can reduce stress on the knee joint and improve shock absorption. Exercises like half squats, leg extensions and hip abduction targets the quadriceps, gluteus and hamstrings to overall knee strength. Low impact exercises can strengthen the muscles around the knees and overall joint stability.
Stretching exercises after strength training helps to maintain full range of motion and reduce injury. A conditioning program takes 4-6 weeks and can be part of lifelong knee health maintenance.
Effective knee pain exercises:
- Calf Raises
- Heel Walks
- Toe Walks
- Single-Leg Balance
- Lateral Band Walks
- Squats
- Lunges
- Step-Ups
- Clamshells
- Side Leg Raises
- Plank Variations
- Ankle Dorsiflexion with Resistance Band
- Hip Abductor Machine
- Wall Sits
When to Get Help
Get help if you have constant knee pain when walking down stairs. See a doctor if the pain is severe or persistent.
See an orthopedic doctor if you have severe pain or ongoing symptoms. In some cases surgery is needed for specific knee conditions. Talk to a healthcare provider about knee pain for advice and treatment.
Wrap Up
The conditions that can cause pain, Patellofemoral Pain Syndrome, Chondromalacia Patella and Osteoarthritis is key to finding the right treatment. Recognize the symptoms and get help early and you can take proactive steps to reduce knee pain and overall knee health.
Prevention like being healthy weight, wearing right shoes and avoiding high impact activities can do a lot.