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Knee Pain Specialist

David N Westerdahl, MD -  - Sports Medicine Physician

Sports Health Northwest, Inc

David N Westerdahl, MD

Sports Medicine Physician & Non-Operative Orthopaedic Specialist located in Portland, OR

Knee pain is a common cause of both short- and long-term disability. If you’re having problems because of knee pain, David Westerdahl, MD, at Sports Health Northwest, Inc can help. He uses stem cell and PRP (platelet-rich plasma) therapies to relieve chronic knee pain and improve function. Schedule an appointment by calling the office located in The Graham Clinic in Portland, Oregon, or book a consultation online today.

Knee Pain Q & A

What causes knee pain?

Knee pain has multiple causes, as your knee takes a lot of strain and is active for much of the time. Some of the common conditions that cause knee pain include:

  • Meniscal tears
  • Arthritis
  • Bursitis
  • Anterior cruciate ligament (ACL) injuries
  • Collateral ligament injuries
  • Patellar tendon tears
  • Posterior cruciate ligament (PCL) injuries
  • Quadriceps tendon tear
  • Runner’s knee (patellofemoral pain)
  • Stress fractures
  • Unstable kneecap


ACL sprains and tears are a frequent cause of knee injuries, especially for athletes and people who are physically active. People who are obese are also more prone to knee problems. 

How is knee pain treated?

Initially, knee pain treatments are likely to be conservative therapies like medication, hot and cold compresses, physical therapy, and activity modification. You might need to wear a knee brace to keep the pressure off healing tissues.

These treatments are often successful, but if they aren’t, the next stage is joint injections. These typically contain steroid and anesthetic medications to reduce inflammation and relieve pain. 

Viscosupplementation injections containing hyaluronic acid can help by lubricating the joints.

Knee surgery is also common. Injuries like meniscal tears and ligament ruptures often fail to heal on their own, and surgery might be suggested as your only option. Degeneration from arthritis can result in knee replacement surgery, which is the most common type of joint replacement.

Some surgeries may speed up the degeneration that leads to osteoarthritis and worsens the biomechanical problems that initially led to surgery.

At Sports Health Northwest, Inc, you have another option – regenerative medicine. 

How does regenerative medicine help with knee pain?

Regenerative medicine treatments include PRP (platelet-rich plasma), alpha 2 macroglobulin (A2M) injections, and stem cell therapies, which contain the substances your body makes when it needs to heal itself. 

Dr. Westerdahl extracts platelets from your blood and stem cells from your bone marrow, then reinjects them into your body in a concentrated form.

You may feel a meaningful difference in your knee pain after just one treatment. However, most patients require a series of treatments to experience the full effects of regenerative medicine. 

Find out more about regenerative medicine treatment for knee pain by calling Sports Health Northwest, Inc today or booking an appointment online.