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How to Treat Calcific Tendonitis: 3 Steps to Remove Calcium Deposits Without Surgery
Medically reviewed by Dr. Jeffrey Peng, MD — Board-Certified Sports Medicine Physician Published: February 26, 2026 | Last Updated: February 26, 2026 If you have been told to just live with calcific tendonitis — or to keep getting cortisone shots until you are "ready for surgery" — you have probably noticed the pain always comes back. That is because most conventional treatments only mask symptoms without addressing the underlying calcium deposit. The good news is there is a
Jeffrey Peng MD
Feb 266 min read
Who Responds Best to PRP Injections for Knee Arthritis? | Dr. Jeffrey Peng MD
Medically reviewed by Dr. Jeffrey Peng, MD — Board-Certified Sports Medicine Physician Published: February 26, 2026 | Last Updated: February 26, 2026 Platelet-rich plasma (PRP) injections have become one of the most promising non-surgical treatments for knee osteoarthritis. However, not every patient experiences the same degree of improvement. In my practice, I have treated thousands of patients with PRP, and while the majority respond well, there are clear patterns in who b
Jeffrey Peng MD
Feb 264 min read


Best Knee Arthritis Injections Ranked: PRP, Cortisone, Hyaluronic Acid, and Stem Cells | Dr. Jeffrey Peng MD
Board-certified sports medicine physician Dr. Jeffrey Peng ranks knee arthritis injections — PRP, hyaluronic acid, cortisone, and stem cells — based on the latest 2025 clinical evidence, safety data, and real-world outcomes.
Jeffrey Peng MD
Feb 266 min read


Percutaneous Tenotomy with PRP for Rotator Cuff Injuries That Won't Heal
Board-certified sports medicine physician Dr. Jeffrey Peng explains how ultrasound-guided percutaneous tenotomy with PRP can heal partial rotator cuff tears without surgery — and what the clinical evidence shows.
Jeffrey Peng MD
Feb 265 min read


3-Step Evidence-Based Protocol to Eliminate Knee Arthritis Pain
Osteoarthritis is now recognized as a metabolic disease. Learn the 3-step evidence-based protocol — metabolic health optimization, PRP injection therapy, and targeted exercise — to reduce knee arthritis pain and restore mobility.
Jeffrey Peng MD
Feb 258 min read


How to Optimize PRP Injections for the Best Results
Written by Dr. Jeffrey Peng, MD — Board-Certified Sports Medicine Physician PRP can work incredibly well for tendons, joints, and soft-tissue injuries—but a lot of people still get disappointing results. Here’s the pattern I see over and over again: two people get the same PRP injection, from the same doctor, using the same technique—and one improves dramatically while the other barely notices a change. And most of the time, it’s not because the injection was done wrong. What
Jeffrey Peng MD
Feb 255 min read


99% of People Over 40 Have Rotator Cuff Damage on MRI — Here's Why It Doesn't Matter
If you're over 40 and you've had a shoulder MRI, there's a 99% chance your report says something is wrong with your rotator cuff. Tendinopathy. Partial tear. Maybe even a full-thickness tear. That sounds terrifying. But a brand new study just scanned over 600 random people's shoulders — people with pain AND people without — and what they found completely changes how we should think about these results. Hey everyone, Dr. Jeff Peng here. I'm a sports medicine doctor currently p
Jeffrey Peng MD
Feb 214 min read


Why PRP Injection Platelet Dosing ACTUALLY Matters
Platelet rich plasma injections are one of the best treatments for knee osteoarthritis. But what most people don’t realize is that not...
Jeffrey Peng MD
May 23, 20244 min read


Knee Arthritis Treatments That ACTUALLY Work: The In-Depth Truth You Need to Know
Knee arthritis treatment is complex and to make matters worse, there is a lot of misinformation from online sources and medical...
Jeffrey Peng MD
Apr 22, 202441 min read


The Ultimate Guide to Platelet Rich Plasma (PRP) Injections
Platelet rich plasma injections also known as PRP have garnered significant attention for their remarkable results. It’s derived from...
Jeffrey Peng MD
Mar 20, 202437 min read


PRP Injections: 3 Critical Mistakes You Must Avoid At All Costs
There are three critical mistakes that can undermine the effectiveness of PRP injections and these mistakes directly translate into...
Jeffrey Peng MD
Feb 24, 20247 min read


Discover the Power of Platelet Rich Plasma (PRP) Injections for Knee Arthritis
Are you struggling with knee osteoarthritis and seeking effective relief? I’m going to dive into the transformative world of...
Jeffrey Peng MD
Dec 30, 20233 min read


PRP Injections: Miracle Cure for Tendons?
Emerging research suggests that platelet rich plasma injections have the potential to fully heal torn tendons, and its efficacy appears...
Jeffrey Peng MD
Nov 6, 20232 min read


PRP Injection for Thumb Joint Arthritis
Platelet rich plasma or PRP injections can offer robust long term pain and symptom relief for people suffering from thumb joint...
Jeffrey Peng MD
Nov 6, 20235 min read


Plantar Fasciitis Treatment: Platelet Rich Plasma (PRP) injection vs Shockwave Therapy
People with plantar fasciitis often worry about long-term effects like decreased mobility and chronic foot pain. That’s why new treatments for plantar fasciitis have been developed and these include platelet rich plasma injections as well as extracorporeal shockwave therapy. The purpose of these treatments are to not only reduce pain and symptoms, but to potentially fix the problem and prevent plantar fasciitis from getting worse. But which of these two treatments is better?
Jeffrey Peng MD
Aug 26, 20234 min read


How Much Does PRP Injection & Stem Cell Therapy Cost?
How much do PRP injections and stem cell therapy cost in the United States? According to this paper published in early 2020, the mean cost of a PRP injection was $707 while the mean cost of a stem cell injection was $2728. I’m going to review the variables that affect cost of treatment, but if you’re just thinking about price, you may be looking at the wrong thing. The more important takeaway from this video is how to pick a provider who will deliver you the best outcomes re
Jeffrey Peng MD
Aug 23, 20233 min read


Platelet Rich Plasma (PRP) Injections Slow Down Knee Arthritis
Platelet rich plasma treatments are extremely effective at decreasing pain and symptoms related to symptomatic knee osteoarthritis. But do PRP injections help slow down the progression of knee arthritis? That’s what the authors of this randomized controlled trial tried to answer. Let’s look at what they found. I’m really excited to review this clinical trial with you because it was extremely well designed and showed some of the amazing potential PRP has when used to treat art
Jeffrey Peng MD
Aug 22, 20236 min read


Arthroscopic Knee Surgery or Platelet Rich Plasma (PRP) injection for Knee Arthritis?
So which one is better? Arthroscopic knee surgery or PRP injection for the treatment of symptomatic knee osteoarthritis? Head to head trials comparing PRP to placebo, PRP to hyaluronic acid, and PRP to cortisone injections all show that PRP has much better and much more sunstained symptom relief when used to treat arthritis. But what about surgery? Let’s look at this randomized controlled trial to find out more. Knee osteoarthritis results in significant pain and disability.
Jeffrey Peng MD
Aug 21, 20234 min read


Does Platelet Rich Plasma (PRP) Work for Achilles Tendon Tear?
Achilles tendon tears are devastating injuries that lead to significant pain and disability. Previously, most people ended up with surgery but over the last few years, many studies have come out suggesting that a lot of people can actually do very well with non operative management. And if these people can be treated nonsurgically, can we then use platelet rich plasma to improve the healing process and augment healing? That’s what this randomized controlled trial tried to ans
Jeffrey Peng MD
Aug 20, 20235 min read


Platelet Rich Plasma (PRP) + Meniscus Repair Surgery
There is considerable debate within the orthopedic community about what the best treatment options are for a meniscus tear. What’s becoming clear is that cutting out the meniscus should really be seen as a last resort. But what about repairing the meniscus? Newer and better techniques for meniscus repair surgery have been shown to have lower failure rates. And with advances in orthobiologics and cellular therapy, many providers are excited about augmenting these repairs with
Jeffrey Peng MD
Aug 19, 20236 min read
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