A non-surgical pathway may fit
- Stable partial-thickness meniscus tear
- Intrasubstance degeneration without displacement
- Meniscal wear where viable tissue remains
- Pain linked to the meniscus without true mechanical locking
RegenRepair™ · Meniscus pathway
NanoAMi
Autologous Meniscal Injection
A non-surgical Seed, Soil, Signal pathway for selected stable meniscus damage—designed for partial-thickness tears, intrasubstance change and wear where viable meniscus remains.
Reviewed byProfessor Paul Lee MBBch, FRCS (Tr & Orth), PhDCartilage and joint preservation expertiseQuick answer
NanoAMi is not a stitch repair. It is an image-guided biological treatment for selected meniscus damage that does not require mechanical surgery. Displaced, root or unstable tears remain separate surgical problems.
NanoAMi—also written Nano AMi—means a non-arthroscopic, needle-delivered, one-stage autologous meniscal injection technique.
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Start with the damage pattern
Meniscus damage is not one diagnosis
The key decision is whether the tissue is stable and biologically treatable, or mechanically disrupted and in need of fixation.
Surgery may still be needed
- A displaced fragment or bucket-handle tear
- A meniscus root tear or extrusion requiring fixation
- Mechanical locking or an unstable tear
- Associated ligament or structural injury needing surgery
RegenRepair for the meniscus
Seed, Soil and Signal—adapted to load-sharing tissue
The Seed is an autologous fibroblast-rich micrograft preparation made on the day from a small hair-follicle-bearing tissue sample. An injectable type-I collagen scaffold provides the Soil and platelet-rich fibrin provides the autologous Signal.
Assessment, delivery, recovery
A pathway designed around meniscus mechanics
Why reloading matters
The meniscus is a pressure distributor
The meniscus turns a concentrated joint force into a broader, safer contact area. Deep flexion and rotation can increase meniscal demand, so progress must be earned in stages rather than guessed from pain alone.
RegenRepair™ · Seed, Soil, Signal
Choose the tissue, then understand the pathway
The biological design is shared. The target, delivery plan and rehabilitation change with the structure being treated.
Cartilage damage
NanoACi
A one-stage, image-guided cartilage regeneration technique built around cartilage micrografts, collagen soil and a patient-derived signal.
Explore NanoACi
Stable meniscus damage
Current pageNanoAMi
A non-surgical pathway using autologous fibroblast-rich micrografts for suitable stable partial-thickness tears, intrasubstance damage and wear.
Explore NanoAMi
Tendon damage
NanoATi
A tendon-specific pathway using autologous fibroblast-rich micrografts, image-guided targeting and progressive mechanical rehabilitation.
Explore NanoATi
Selected ligament damage
NanoALi
A non-surgical ligament pathway for selected partial or healing injuries where useful continuity and joint stability remain.
Explore NanoALi
NanoAMi questions
What is the Seed in NanoAMi?
The Seed is prepared from a small hair-follicle-bearing tissue sample and processed on the day into autologous fibroblast-rich micrografts. The donor-tissue rationale draws on the fibroblast biology shared with meniscus, but is not direct proof of meniscus regeneration.
Is NanoAMi meniscus surgery?
No. The standard NanoAMi pathway described here is delivered without surgery for suitable stable meniscus damage. It is not a stitch repair and it does not mechanically reattach a displaced tear.
What kind of meniscus damage may suit NanoAMi?
It may be considered for selected stable partial-thickness tears, intrasubstance damage and degenerative wear where viable meniscus tissue remains and there is no mechanical problem that clearly requires surgical repair. Examination and MRI are needed to make that distinction.
When does a meniscus tear still need surgery?
A displaced tear, a root tear, an unstable fragment, persistent locking or a tear that must be mechanically reattached may require meniscus repair or another surgical pathway. NanoAMi cannot substitute for structural fixation when the mechanics are wrong.
Can NanoAMi also be used after meniscus surgery?
Biological treatment may sometimes be considered as an adjunct after a separate surgical repair. That is a different clinical plan. It should not be confused with the standard non-surgical NanoAMi pathway explained on this page.
Why is rehabilitation important after NanoAMi?
The meniscus shares load between the thigh bone and shin bone. Early protection and a progressive return to weight-bearing, strength and rotation are therefore part of the biological plan. The exact programme depends on the damage pattern and symptoms.
Still have more specific concerns?
Free Discovery CallOptions that our doctors may discuss include NanoACi, ChondroFiller, Mytocel MSK, joint replacement, established conservative care or surgery, depending on examination and imaging.
Find out whether your meniscus damage is stable
The deciding question is not simply whether the MRI says tear. Professor Lee reviews the tear pattern, stability, symptoms and joint mechanics before discussing non-surgical or surgical options.