01 · Seed
NanoALi · Evidence by component
What supports each part of NanoALi?
NanoALi brings a fibroblast-rich Seed, type-I collagen support and an autologous platelet-rich plasma Signal together. The biological logic and the published evidence for each part are shown side by side.
Reviewed byProfessor Paul Lee MBBch, FRCS (Tr & Orth), PhDCartilage and joint preservation expertiseQuick answer
NanoALi brings a fibroblast-rich Seed, a type-I collagen Soil and a platelet-rich plasma Signal to injured ligament under image guidance. Human ligament biology, hair-follicle precursor research, collagen scaffold models and PRP trials in partial ACL tears and ankle sprains support each part. Outcomes for the complete pathway are recorded at the clinic.
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A transparent evidence map
Three components. Three evidence questions.
Each part is assessed against the ligament target. Evidence for one component is never presented as proof of the complete protocol.
02 · Soil
Type-I collagen scaffold
03 · Signal
Platelet-rich plasma
01 · Seed
Autologous fibroblast-rich micrografts
A small hair-follicle-bearing tissue sample is mechanically processed on the day into an autologous micrograft suspension containing fibroblast-rich dermal tissue and native matrix.
How directly does the evidence apply?
Human ligament research confirms a fibroblast-rich target tissue, while hair-follicle niches contain accessible dermal precursor populations with neural-crest-like properties and multi-lineage plasticity in laboratory studies.
Target-tissue evidenceHuman in-vitro cell-isolation pilot study.
Human ACL fibroblasts isolated from small tissue pieces
Liu Z et al. Medicine. 2019;98(22):e15907.
Human ACL fibroblasts were isolated from ligament tissue pieces and expanded under laboratory conditions.
Why it belongs here: Confirms the fibroblast biology of the ligament target and the relevance of tissue fragments, but not a hair-follicle donor or injectable clinical protocol.
Read the published sourceMechanistic evidenceLineage-tracing and laboratory study.
Hair-follicle dermal precursors from distinct developmental origins
Jinno H et al. Stem Cells. 2010;28(11):2027–2040.
Follicle-associated dermal precursors from face and trunk had different developmental origins but similar neural-crest-like properties and multi-lineage behaviour.
Why it belongs here: Supports donor-niche plasticity; it is not evidence of ligament differentiation or clinical ligament healing.
Read the published source02 · Soil
Injectable type-I collagen scaffold
A three-dimensional type-I collagen framework intended to retain the delivered biology at a selected ligament target.
How directly does the evidence apply?
Type-I collagen is central to ligament structure, and laboratory models have used type-I collagen hydrogels with ligament-related cells. Professor Lee currently selects ChondroFiller as the injectable Soil; its published clinical evidence is in cartilage and its ligament use rests on that type-I collagen biology.
Mechanistic evidenceHuman cell and scaffold study with cyclic mechanical loading.
Ligament-like constructs in a type-I collagen hydrogel
Nöth U et al. Cytotherapy. 2005;7(5):447–455.
Mesenchymal cells in a type-I collagen hydrogel formed ligament-like extracellular matrix under cyclic stretch, although the constructs were not mechanically suitable for clinical implantation.
Why it belongs here: Mechanistic support for collagen plus mechanical loading; not evidence for an injectable product or clinical NanoALi.
Read the published source03 · Signal
Autologous platelet-rich plasma
A platelet concentrate prepared from the patient’s blood that adds platelet-derived growth factors to the combined pathway.
How directly does the evidence apply?
Human partial-ACL and ankle-sprain studies provide target-ligament evidence for platelet-rich plasma on its own: a partial-ACL series showed ligament healing on MRI and return to sport, and an ankle-sprain review found better short-term pain and function. In NanoALi, PRP is the Signal delivered alongside the Seed and the Soil.
Target-tissue evidenceProspective human case series of athletes with partial ACL tears treated by injection.
Partial ACL tears treated with intraligamentary platelet-rich growth factors
Seijas R et al. World Journal of Orthopedics. 2014;5(3):373–378.
Most athletes returned to their previous level of sport and follow-up MRI showed the treated ligament thickening and maturing over time.
Why it belongs here: Human target-ligament evidence that the patient’s own platelet growth factors support healing in a partial ACL tear; platelets alone, without the Seed or Soil.
Read the published sourceIndirect evidenceSystematic review of four human comparative studies, including three randomised trials.
Platelet-rich plasma for acute lateral ankle sprain
Banerjee S et al. Indian Journal of Orthopaedics. 2025;59(7):910–919.
PRP was associated with better short-term pain, function and earlier return to activity after acute ankle sprain.
Why it belongs here: Human ankle-ligament evidence for PRP on its own, not the complete NanoALi combination.
Read the published sourceThe combined protocol
Three established principles, one technique
NanoALi is Professor Lee’s clinician-developed technique for bringing fibroblast-rich micrografts, collagen support and an autologous signal to injured ligament under image guidance. It may be delivered as a stand-alone non-surgical pathway for suitable injury or considered as an adjunct around repair. Outcomes for each route are recorded at the clinic.
Each component is used within its own evidence base. Professor Lee brings them together in one image-guided session, and outcomes for the complete technique are recorded at the clinic so that it is judged on its own results as well as on the evidence for its parts.
Questions about the NanoALi evidence
What evidence supports NanoALi?
Human ligament research confirms the fibroblast-led biology the Seed is chosen to match, human studies of PRP in partial ACL tears and ankle sprains support the Signal, and type-I collagen is the structural protein of ligament, which is why a type-I collagen Soil is used. Each study is shown with how directly it applies, and outcomes for the complete pathway are recorded at the clinic.
What supports the fibroblast-rich Seed?
Human ACL research confirms ligament fibroblast biology, while hair-follicle dermal precursors show neural-crest-like properties and multi-lineage plasticity in laboratory work.
Why use ChondroFiller as the Soil in ligament?
Type-I collagen is the main structural protein of ligament, and ChondroFiller provides an injectable type-I collagen framework. Its published clinical evidence is in cartilage; its ligament use rests on that collagen biology and on laboratory scaffold models.
What supports platelet-rich plasma in ligament?
Human studies of PRP in partial ACL tears and ankle sprains provide target-ligament evidence for PRP on its own, and in NanoALi, PRP is the Signal delivered alongside the Seed and the Soil.
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.
Discuss the evidence, limitations and alternatives
Professor Lee can explain how the evidence applies to your ligament, where the rationale is extrapolated and whether this pathway is proportionate.