In orthopaedic surgery, our goal is always to help the body heal as naturally and effectively as possible. Sometimes, despite the best surgical techniques, the healing process needs an extra boost, especially in areas like cartilage, bone or tendon repair.
Bone Marrow Aspirate Concentrate (BMAC) is one way we can enhance the body’s healing response using its own regenerative cells. It’s a safe and proven technique that is increasingly used in modern orthopaedic procedures.
What Is BMAC?
BMAC stands for Bone Marrow Aspirate Concentrate. It is a concentrated form of bone marrow taken from your own body, usually from the pelvic bone (iliac crest).
Bone marrow contains:
- Stem cells that can help form new bone, cartilage and soft tissue
- Growth factors that reduce inflammation and promote repair
- Platelets and healing proteins that support the body’s natural recovery process
When these healing components are concentrated and applied to an injury site, they can help stimulate and enhance tissue repair.
How Is It Performed?
In our practice, BMAC is not done as an outpatient injection.
We typically perform bone marrow aspiration during surgery, while you are already under anaesthesia or sedation.
This makes the procedure more comfortable and less daunting for patients.
Here’s what happens:
- During your surgery, a small amount of bone marrow is drawn from the pelvic bone.
- The marrow is then processed in a sterile system to separate and concentrate the regenerative cells and proteins.
- This concentrate is applied directly to the area being treated — for example, a cartilage repair site, bone graft, or tendon repair.
The entire process is completed within the same surgical setting, without additional recovery time or hospital stay.
When Do We Use BMAC?
We commonly use BMAC as an adjunct to surgery in the following situations:
- Cartilage repair – to promote better integration and healing of cartilage grafts.
- Delayed or non-union fractures – to help bone heal when it is slow or incomplete.
- Spine fusion surgery – to improve bone fusion rates and support stable healing.
- Rotator cuff repair – to enhance tendon-to-bone healing and reduce the risk of re-tear.
In all these settings, BMAC works as a biologic enhancer, giving the body’s own healing process a helping hand.
Is Bone Marrow Aspirate Concentrate (BMAC) Safe?
Yes. Because BMAC is made from your own bone marrow, there is no risk of allergy or rejection.
The bone marrow aspiration is done under direct surgical conditions, and most patients do not experience any discomfort related to the procedure itself.
Possible mild side effects include temporary soreness at the donor site, which usually resolves within a few days.
What Does the Evidence Say?
Research over the past decade has shown that BMAC can:
- Improve bone healing in delayed or non-union fractures
- Support cartilage regeneration when used with microfracture or scaffold techniques
- Enhance spinal fusion rates
- Improve tendon healing in rotator cuff and ligament repair
While BMAC is not a magic cure, it has become a valuable biologic tool in modern orthopaedic surgery, one that uses your own body’s regenerative potential to improve surgical outcomes.
In Summary: Bone Marrow Aspirate Concentrate (BMAC)
Bone Marrow Aspirate Concentrate (BMAC) is a natural, safe, and scientifically supported way to boost healing during surgery.
By concentrating your own bone marrow cells and applying them directly to the repair site, we can help improve tissue healing, reduce recovery time, and enhance surgical success, all using the power of your own body.
To learn more about Bone Marrow Aspirate Concentrate (BMAC) and whether it may be suitable for your condition, speak to our orthopaedic specialists at Pinnacle Orthopaedic Group in Singapore.
Quick Facts: BMAC in Orthopaedic Surgery
| Topic | Details |
| What it is | A concentrated solution of your own bone marrow containing stem cells and growth factors |
| How it’s done | Collected during surgery under anaesthesia and applied directly to the repair site |
| Common uses | Cartilage repair, bone non-union, spine fusion, rotator cuff repair |
| Purpose | To enhance the body’s natural healing and improve surgical outcomes |
| Safety | Very safe — uses your own cells, minimal risk of reaction |
| Recovery | No additional downtime; part of your standard surgical recovery |