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Visceral Fat and Arthritis: How Body Fat Affects Your Joints and How to Reduce It
Written by Dr. Jeffrey Peng, MD — Board-Certified Sports Medicine Physician Published: March 1, 2025 | Last Updated: March 1, 2025 Visceral fat is something most people have never heard of, but it may be one of the most important factors in long-term joint health. Unlike the fat you can pinch under your skin, visceral fat hides deep inside your abdomen, surrounding your organs. It does not simply sit there quietly — it actively drives systemic inflammation, fuels metabolic s
Jeffrey Peng MD
Mar 16 min read


PRP Injection vs Physical Therapy for Tennis Elbow: What a New 2-Year Study Shows
Written by Dr. Jeffrey Peng, MD — Board-Certified Sports Medicine Physician Published: March 1, 2026 | Last Updated: March 1, 2026 Tennis elbow — medically known as lateral epicondylosis — can be one of the most frustrating conditions to deal with. It often drags on for months, sometimes even years, and many patients find that physical therapy alone does not provide lasting relief. But what if there is a treatment that goes beyond managing symptoms and actually helps repair
Jeffrey Peng MD
Mar 14 min read
Shoulder Pain by Location: Common Causes, Symptoms, and What They Mean
Shoulder pain is not random. The location of your pain and the way your symptoms behave can serve as important diagnostic clues to the underlying problem. By understanding the source of your symptoms, you can take the appropriate steps toward getting an accurate diagnosis and effective treatment. As a sports medicine physician in the San Francisco Bay Area, I have treated thousands of patients with shoulder pain, and the same patterns come up again and again. Certain types of
Jeffrey Peng MD
Mar 18 min read
PRP Injections for Plantar Fasciitis: Do They Work Better Than Cortisone?
Medically reviewed by Dr. Jeffrey Peng, MD — Board-Certified Sports Medicine Physician Last updated: February 28, 2026 Plantar fasciitis is one of the most common and frustrating conditions I see in my sports medicine practice. Many of my patients have already tried stretching, orthotics, night splints, and even steroid injections — only to have their heel pain return weeks or months later. The question I hear most often is whether there is a treatment that can actually heal
Jeffrey Peng MD
Feb 286 min read
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


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


The Best Exercises to Treat Trochanteric Bursitis & Gluteal Tendinopathy
What is trochanteric bursitis and gluteal tendinopathy? Trochanteric bursitis and gluteal tendinopathy are conditions characterized by...
Jeffrey Peng MD
Feb 24, 20244 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


This is What CAUSES and WORSENS Tendonitis
Everyone thinks their tendons hurt because of inflammation. But they’re all wrong. Here’s the truth. A lot of painful conditions like...
Jeffrey Peng MD
Nov 6, 20235 min read


New Study Confirms These Statin Side Effects are True!
A new study now confirms what many patients have been telling their doctors for years. There is a clear link between statins and tendon...
Jeffrey Peng MD
Nov 6, 20236 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


Jeffrey Peng MD
Sep 26, 20220 min read


Jeffrey Peng MD
Jul 7, 20220 min read


Jeffrey Peng MD
Apr 21, 20220 min read


Plantar fasciitis: causes, symptoms, treatment, and prognosis.
The plantar fascia is a thick band of tissue that supports the foot. Plantar fasciitis is one of the most common causes of foot pain.
Jeffrey Peng MD
May 19, 20213 min read


Biceps tendinopathy: causes, symptoms, treatment, and prognosis.
The biceps muscles are located in front of the arm. Biceps tendinopathy can cause pain in the shoulder or elbow.
Jeffrey Peng MD
Apr 29, 20213 min read


Triceps tendinopathy: causes, symptoms, treatment, and prognosis.
The triceps muscles are located in the back of the arm. They can cause pain while extending the elbow.
Jeffrey Peng MD
Apr 26, 20213 min read


Proximal hamstring tendinopathy: causes, symptoms, treatment, and prognosis.
The hamstring muscles are located in the back of the thigh. Proximal hamstring tendinopathy is a common cause of posterior hip pain.
Jeffrey Peng MD
Apr 26, 20213 min read


Rotator cuff disorders: causes, symptoms, treatment, and prognosis.
Rotator cuff tendinopathy is also called rotator cuff tendonitis and impingement syndrome. It is a very common cause of shoulder pain.
Jeffrey Peng MD
Apr 22, 20213 min read


Gluteal tendinopathy: causes, symptoms, treatment, and prognosis.
Gluteal tendinopathy is also known as trochanteric bursitis or greater trochanteric pain syndrome. It is a common cause of outside hip pain.
Jeffrey Peng MD
Apr 22, 20213 min read
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