Knee arthritis is one of the most common reasons people look into regenerative treatment. In this short explainer, RegenOrthoSport, a sports medicine provider in Hyderabad, India, explains why the knee wears down, how a doctor examines it, and how a bone marrow injection is prepared.
Jump to a moment
0:03What the knee does0:14Risk factors1:11The knee exam1:23Collecting the cells1:44BMAC and platelets2:09Why timing matters
Why Knees Wear Out
The video opens with the job the knee does every day: it bends, carries your body weight and straightens the leg. Over the years, the cartilage that cushions those movements can thin. When that wear becomes painful and stiff, it is called osteoarthritis. The video names five common reasons it develops.
How a Doctor Examines the Knee
“Your doctor will examine the knee for swelling, pain, bruising, tenderness, and reduced movement.”
From the video · 1:11
After the physical exam, an X-ray is usually the next step, because it shows how much joint space is left between the bones. An MRI is sometimes added when a doctor wants to look closely at the cartilage, ligaments or meniscus. If you already have scans, bring them to your consultation, since they help a provider judge whether an injection makes sense for you.
The Treatment Shown in the Video
The video describes a bone marrow aspirate concentrate injection, usually called BMAC. It uses your own cells, so nothing comes from a donor. You can read how BMAC compares with other cell sources in our stem cell therapy guide.
The video also mentions platelet procedures. These use a concentrate made from your own blood rather than bone marrow, and are explained in detail on our PRP therapy page. Both approaches are sometimes described as ways to support cartilage regeneration, although rebuilding lost cartilage has not been proven.
What the Video Says and What Research Shows
What the video says
- The injection aims to reduce pain and swelling and improve movement (1:55).
- Regenerative treatment is described as addressing the underlying problem, unlike pain pills (2:00).
- Joint problems tend to worsen when treatment is delayed (2:12).
What to keep in mind
- Studies of BMAC for knee arthritis report mixed results. Some people report less pain, while proof that it regrows cartilage is limited.
- The American College of Rheumatology advises against stem cell injections for knee osteoarthritis outside research.
- Exercise, weight management and physiotherapy remain the foundation of care.
Who Providers Usually Consider
Providers who offer BMAC usually look for people with mild to moderate knee arthritis who still have some cartilage, who have already tried exercise and physiotherapy, and who want to delay surgery. People with advanced, bone-on-bone arthritis or a badly misaligned knee are less likely to benefit, and a knee replacement may serve them better.
Bring these to your consultation
- Your latest knee X-ray or MRI report
- A list of the treatments you have already tried
- Your medicines and any allergies
- What you want to get back to, such as walking distance or climbing stairs
Common Questions
Is a bone marrow knee injection a surgery?
No. It is an outpatient procedure done under local anaesthetic. Most people go home the same day, though the knee and the hip where marrow was drawn can feel sore for a few days.
How is BMAC different from PRP?
BMAC is made from bone marrow and contains a mix of cells and growth factors. PRP is made from a blood sample and contains concentrated platelets. Providers sometimes combine the two.
Can BMAC replace a knee replacement?
It is not a substitute for a replacement in advanced arthritis. Some people with earlier arthritis use it to try to delay surgery, but results vary.
How soon might I notice a change?
Providers usually describe a gradual change over weeks to a few months rather than overnight relief. Ask the provider how and when they will measure your progress.
What are the main risks?
The most common effects are pain, swelling and stiffness at the injection and collection sites for a few days. Infection is rare but possible with any injection, so ask how the procedure is kept sterile.
Will I need more than one injection?
Some providers recommend a single injection and others a short series. Ask why a particular number of sessions is recommended for you.
Can international patients be treated in India?
Yes. Many providers in India treat international patients. A patient coordinator can help you gather quotes, check what is included and plan your travel.
Want a second opinion on your knee scans? A PlacidWay patient coordinator can share them with providers and help you compare what each one recommends.
Video Transcript Summary
A timestamped summary of what is said in the video. Select a time to watch that moment on YouTube.
References
- PlacidWay. RegenOrthoSport knee arthritis video and transcript.
- Kolasinski SL, et al. 2019 American College of Rheumatology/Arthritis Foundation Guideline for the Management of Osteoarthritis of the Hand, Hip, and Knee. Arthritis & Rheumatology, 2020.
- National Institute of Arthritis and Musculoskeletal and Skin Diseases. Osteoarthritis.
- U.S. Food and Drug Administration. Consumer Alert on Regenerative Medicine Products Including Stem Cells and Exosomes.
Disclaimer. This page explains a provider video and is not medical advice. Results differ from person to person. Speak with your doctor before choosing a treatment.
