PRP for Knee Arthritis in Phoenix, AZ: A Non-Surgical, Image-Guided Approach
Knee pain from arthritis rarely announces itself all at once. It shows up as morning stiffness, a catch on the stairs, or a knee that starts complaining halfway through a walk that used to be easy. Many patients are offered a cortisone injection as the next step, but a corticosteroid shot manages symptoms temporarily and does not address the underlying joint environment driving the pain.
At Precision Regenerative Medicine™, we treat the inflammatory process inside an arthritic knee directly, using your own concentrated platelets delivered under live ultrasound guidance. Targeted PRP for knee arthritis in Phoenix, AZ is designed to reduce inflammation, reduce pain, and improve joint function, giving patients a non-surgical option before joint replacement becomes the only conversation left to have.
Patients searching for PRP for knees near me throughout the Phoenix area come to Precision Regenerative Medicine™ for a straightforward reason: every injection is planned and performed by a physician, not a technician, and every injection is placed under direct visualization rather than by feel.
I am Dr. Tammy J. Penhollow, DO, a dual board-certified physician in Anesthesiology and Pain Medicine, fellowship-trained at Stanford, and I practice exclusively in regenerative medicine. Precision Regenerative Medicine™ operates on a direct pay basis, which means your evaluation and treatment plan are built around your knee, not around what an insurance visit code allows time for.
Ultrasound-Guided PRP: Precision Over Guesswork
Treating an arthritic knee well starts with an accurate picture of what’s actually happening inside the joint, not just where the pain is reported. I evaluate leg alignment, joint space narrowing, and prior treatment history before determining whether PRP is the right fit and, if so, how it should be delivered.
Every injection is placed under live ultrasound guidance so the platelet concentrate reaches the joint space itself rather than surrounding fat or muscle tissue. Unguided, landmark-based injections carry a meaningfully higher risk of missing the target joint capsule entirely, which is one of the more common reasons patients report that “PRP didn’t work for them” when the real issue was placement, not the treatment itself.
- Direct ultrasound placement confirms the injection reaches the joint capsule rather than surrounding tissue.
- Autologous preparation uses concentrate drawn from your own blood, which avoids the allergic reaction and rejection risk that comes with donor or synthetic material.
- Joint Boost System™ preparation can be layered in to strengthen the muscles supporting the knee, reducing the load the joint has to carry day to day.
- No cortisone in our regenerative protocols, since corticosteroids work against the tissue-healing response PRP is designed to support.
What This Looks Like at Your Visit
Evaluation. I review your joint mechanics, imaging, and prior treatment history, including any past corticosteroid injections, to confirm PRP is an appropriate fit for your knee.
Platelet preparation. A blood draw is processed to concentrate platelets to the level appropriate for your degree of joint wear and inflammation.
Ultrasound-guided delivery. The concentrate is delivered directly into the joint space under live imaging, so placement is confirmed rather than assumed.
Movement integration. Where appropriate, treatment is paired with Joint Boost System™ conditioning to support the muscles around the knee, since an injection alone does not address the mechanical load the joint is carrying.
The visit itself is outpatient and typically runs about 90 minutes from blood draw to injection.
What to Expect After Treatment?
Most patients resume basic daily activities, walking, standing, light errands, within days of treatment. More demanding activity, such as hiking, running, or higher-impact exercise, is reintroduced gradually and often with some activity modification over the following weeks, as your knee’s response to treatment is reassessed.
A few things that support the process in the meantime:
- Stay well hydrated, since joint fluid quality depends in part on overall hydration.
- Favor low-impact movement, such as swimming or cycling, over high-impact activity while the joint settles.
- Wear supportive, properly fitted footwear, since ankle and hip alignment both affect knee load.
Keep up with any individualized strengthening plan, since quadriceps strength is one of the more modifiable factors in knee joint stress.
Who This Is For
Targeted PRP is most appropriate for adults with knee osteoarthritis who want to slow the disease process and manage symptoms without surgery, including patients dealing with persistent joint swelling, bone-on-bone changes on imaging, or a poor response to prior cortisone injections. PRP is not a cure for arthritis and does not rebuild cartilage that has already been lost. What it can do is reduce the inflammatory environment inside the joint, which may help slow further progression while reducing pain and improving day-to-day function.
Whether PRP for knee arthritis in Phoenix, AZ is the right next step depends on your imaging, your joint stability, and what you’re trying to get back to, which is exactly what a physician evaluation is for.
Why Patients Choose Precision Regenerative Medicine™
Precision Regenerative Medicine™ is an interventional practice built around one physician doing the evaluating, the planning, and the procedure, every time. Led by Dr. Tammy J. Penhollow, DO, a dual board-certified physician in Anesthesiology and Pain Medicine with Stanford fellowship training, the practice combines advanced autologous biologic protocols with a deliberate stance against cortisone in regenerative care.
- Physician-led care from evaluation through procedure, with no delegation to a technician.
- No cortisone in regenerative protocols. We’ve written more about why here: why corticosteroid injections are not as benign as you’ve been told.
- 100% image-guided injections, using ultrasound for every joint procedure.
- An independent practice model built around individual diagnosis rather than a standardized protocol.
Related Care at Precision Regenerative Medicine™
- PRP treatment in Phoenix, AZ: Image-guided biologic therapy for tendon, ligament, and joint conditions, aimed at reducing inflammation and supporting function.
- ExoMind® therapy in Phoenix, AZ: Non-invasive brain stimulation designed to support focus and mental performance.
- PRP for shoulder pain in Phoenix, AZ: Image-guided biologic care for rotator cuff, labral, and tendon-related shoulder pain.
- Back pain relief in Phoenix, AZ: Comprehensive interventional spinal care through our Tower of Power Spine® program.
Frequently Asked Questions
What makes PRP for knee arthritis in Phoenix, AZ different from cortisone shots?
PRP uses concentrated platelets from your own blood to support the joint’s healing environment and reduce inflammation. Cortisone provides temporary symptom relief but can suppress the local healing response over repeated use, which is why we don’t use it in regenerative protocols. More on that here: why corticosteroid injections are not as benign as you’ve been told.
How long does a knee PRP appointment take?
The full outpatient visit typically takes about 90 minutes, including the blood draw, platelet processing, and ultrasound-guided injection.
Is ultrasound guidance really necessary for knee injections?
Yes. Ultrasound confirms the injection reaches the joint capsule rather than surrounding tissue, which matters because a missed injection has little chance of producing a meaningful result.
How soon can I walk after a knee injection?
Most patients walk without restriction the same day. More demanding activity is reintroduced gradually over the following weeks based on how the knee responds.
Does PRP rebuild knee cartilage?
No. PRP does not regenerate or rebuild cartilage that has already been lost. Its role is to reduce inflammation and pain and improve function, and it may help slow further cartilage loss by reducing the inflammatory environment inside the joint.
If cortisone shots have started to feel like a temporary fix for a problem that keeps coming back, the next step isn’t another injection of the same kind. Schedule an evaluation with Precision Regenerative Medicine™ to find out whether targeted, image-guided PRP is the right fit for your knee.
Start Your Evaluation at Precision Regenerative Medicine™
If you are considering your options for chronic joint or spine pain, tendon or ligament injury, or non-surgical care in the Phoenix and Scottsdale area, I welcome the opportunity to evaluate your clinical picture and, if you are a candidate, determine which approach fits your presentation.
