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Plasma Injection Therapy

Platelet Rich Plasma Injection Therapy (PRP)

  • Sports Injuries
  • Degenerative Joint & Disc Disease
  • Degenerative Arthritis

What is PRP?

PRP is an outpatient office based treatment to treat tendon and ligament injury as well as some joint abnormalities. PRP uses a patient's own blood components to stimulate a healing response in damaged tissues.

When an injury happens to tissue, our bodies naturally recruit platelets from the blood to initiate a healing response. Platelets carry growth factors which are then released in response to signals sent from the injured tissue. Now, we are able to concentrate platelets from your blood. We then inject the platelets into the exact areas that are injured. Once the highly concentrated (4-12 times normal) platelets are injected, the growth factors are released simulating the same normal healing response in a much more powerful form.

How is that done?

To prepare PRP, a small amount of blood is taken from the patient. The blood is then placed in a centrifuge. The centrifuge spins and through a multi-functional process separates the plasma from the blood producing the PRP. This increases the concentration of platelets and growth factors up to 500% also increasing hMSC (human stem cells) proliferation as a function of 8-day exposure to platelet released concentrations 10x. (x= increase above native levels)

When PRP is injected into the damaged area it stimulates the tendon or ligament causing mild inflammation that triggers the healing cascade. As a result new collagen begins to develop. As this collagen matures it begins to shrink causing the tightening and strengthening of the tendons and ligaments of the damaged area.

PRP Regenerates Tendons & Ligaments

Tendons connect the muscle to the bone making it possible for you to do many everyday physical activities. Overuse or damage to the tendon over a long period of time causes the collagen fibers in the tendons to form small tears, a condition called tendonitis. Damage to tendons most often occurs in the knees, ankles, hips, spine, elbows, shoulders, and wrists.

Ligaments are composed of collagen fibers that hold one bone to another, stabilizing the joint and controlling the range of motion. When a ligament is damaged, it is no longer able to support the bones in the joint, which often leads to pain symptoms. The instability causing the pain in your joints does not always show up on high tech imaging equipment.

Tendons and ligaments have a poor blood supply and they do not usually heal from damage. Combined with the stress of day-to-day activities tendons and ligaments become inefficient causing degeneration of the joint which leads to chronic pain and weakness. Patients who experience chronic pain may not even remember when the injury occurred.

How Does PRP Compare With Cortisone Shots?

Studies have shown that cortisone injections may actually weaken tissue. Cortisone shots may provide temporary relief and stop inflammation, but may not provide long term healing. PRP therapy is healing and strengthening these tendons and ligaments and in some cases thickening the tissue up to 40%.

What general conditions can be treated with PRP?

Conditions that can be treated with PRP:


  • Ligament tears (MCL)
  • Patella tendonitis
  • Quadriceps tendon partial tears
  • Arthritis (investigational at this point in my opinion)


  • Bursitis
  • Hamstring tears
  • Labral tears
  • Arthritis


  • Rotator cuff tendonitis
  • Rotator cuff partial tears
  • AC joint arthritis and pain
  • Arthritis
  • Bursitis
  • Biceps tendonitis
  • Arthritis


Ulnar collateral ligament sprains in baseball players Golfers elbow Tennis elbow


  • Achilles tendonitis
  • Peroneal tendonitis
  • Plantar fasciitis
  • Knee and ankle arthritis


Plantar fasciitis


chronic pain, arthritis and disc lesions
Others : Temporo- mandibular joint dysfunction, and so many others

When should PRP be used first?

As mentioned above if your injury is severe enough to warrant surgery and/or your joint degeneration has progressed to moderate/severe, PRP should be considered prior to the more invasive surgical option. If you have a tear in the meniscus (knee cartilage) or the labrum (shoulder cartilage) PRP will deliver and recruit the necessary blood growth factors and stem cells to repair these types of tissues.

How is the treatment program?

Following an initial consultation and evaluation, treatment options will be discussed and information will be provided for you to make an informed decision regarding your treatment. A full explanation of the procedure including risks and benefits will be reviewed. On the day of your PRP treatment, blood is drawn from your arm and placed in a special centrifuge unit which separates platelets, white blood cells and serum from red blood cells. The platelets and white blood cells are then concentrated and collected into a sterile syringe. Your skin and soft tissue is first anesthetized with local anaesthetic followed by the injection of the PRP. Depending on the area(s) being treated, one or more injections may be made. The procedure may be done under ultrasound guidance, this also will be discussed with you prior to your treatment day.

Frequency of Treatments?

While responses to treatment vary, most people will require 3 to 6 sets of injections of PRP. Each set of treatments is spaced 4 to 6 weeks apart.

What Are The Potential Benefits?

Patients can see a significant improvement in symptoms as well as a remarkable return of function. This may eliminate the need for more aggressive treatments such as long-term medication or surgery.

Special Instructions

You are restricted from the use of non-steroid anti-inflammatory medications (NSAIDs) one week prior to the procedure and throughout the course of treatments.

Initially the procedure may cause some localized soreness and discomfort. Most patients only require some extra-strength Paracetamol to help with the pain. Ice may be applied to the area as needed.

How Soon Can I Go Back Regular Activities?

PRP therapy helps regenerate tendons and ligaments but it is not a quick fix. This therapy is stimulating the growth of new tissue requiring time and rehabilitation. Under Dr. Felix's supervision patients will begin an exercise program immediately following the first procedure which may involve a physiotherapist. During the treatment program most people are able to resume normal activities and exercise.

Article for reference:


Please Note: Due to Australian medical advertising regulations, Doctors are not permitted to advertise patient testimonials that have undergone the treatment in Australia. Therefore the following link hereunder is from another clinic in the United States of America demonstrating and discussing the exact same procedure. Dr Soraya Felix was also trained by the same American Association of Orthopaedic Medicine as the Specialist on the video link.