Step 01
Align to the lesion
A perpendicular guide establishes the implant position across the damaged cartilage and underlying bone.
Now available at London Cartilage Clinic
Single-stage osteochondral repair
CartiHeal Agili-C
An off-the-shelf, porous implant designed to support repair of selected knee cartilage damage and the underlying bone in one surgical procedure.
Reviewed byProfessor Paul Lee MBBch, FRCS (Tr & Orth), PhDCartilage and joint preservation expertiseCurrent status
Bookable after specialist assessment
CartiHeal is now available at London Cartilage Clinic. Booking starts with an imaging-led consultation because the implant is designed for selected knee-joint surface lesions, not knee pain in general. Surgery is offered only where the lesion, bone and whole-knee mechanics make it a credible option.
First step
Consultation and imaging review
Verified across three networks
Trusted by patients on Doctify, Google and Top Doctors
Cartilage and bone together
A biphasic scaffold for an osteochondral problem
CartiHeal is manufactured from naturally occurring calcium carbonate in a porous aragonite structure. Its upper and lower zones are designed for the different biological environments of cartilage and subchondral bone.
Unlike a donor osteochondral graft, it is off the shelf. Unlike an injection, it requires precise surgical preparation of the lesion and implantation into bone. The implant is contained within that focal site and seated below the surrounding cartilage surface rather than occupying the joint space.
Phase 1
Implant in place
Phase 2
Tissue remodelling
Phase 3
Biological replacement
Manufacturer surgical technique
Precise preparation, placement and depth
The operation is planned around the actual lesion. The overview below explains the sequence; the procedure guide shows the manufacturer technique in full context.
Step 02
Prepare the bed
The osteochondral site is drilled, reamed and shaped to the selected implant diameter and depth.
Step 03
Place the implant
The off-the-shelf biphasic implant is introduced into the prepared cylindrical site.
Step 04
Seat below the surface
The implant is seated approximately 2 mm below the articular surface, following the surgical technique guide.
Five-year randomised evidence
Outcomes remained separated at 60 months
In the published trial, CartiHeal was compared with a surgical standard-of-care arm using debridement or microfracture. The figures below are group outcomes, not a prediction for an individual patient.
81.0
vs 59.1 control
Mean KOOS at 60 months
74.7%
vs 29.6% control
Clinical responder rate
15.0%
vs 35.7% control
Treatment failure rate
1.8%
vs 9.5% control
Replacement or osteotomy
Trial population: adults aged 21–75, up to three knee lesions, total lesion area 1–7 cm², ICRS grade 3A or higher and Kellgren–Lawrence grade 0–3. These are research criteria, not a blanket indication or a guarantee of suitability.
Selection before technology
A strong implant still needs the right knee
Symptoms, lesion size and depth, underlying bone, alignment, stability, meniscus, osteoarthritis grade and rehabilitation capacity all affect the decision. CartiHeal may be one option within a wider cartilage preservation strategy—not the automatic answer to every cartilage defect.
What assessment considers
- Contained cartilage or osteochondral lesion pattern
- Quality of the surrounding cartilage and bone
- Alignment, ligament stability and meniscus function
- Age, health, activity goals and ability to rehabilitate
Risks and limitations
This is surgery. Relevant risks include infection, blood clots, stiffness, swelling, persistent symptoms, implant or tissue-healing failure and the possibility of further surgery. Rehabilitation and protected loading are required. Full risks will be discussed against the current instructions for use before any procedure is offered.
CartiHeal questions
What is CartiHeal Agili-C?
CartiHeal Agili-C is a porous, biphasic osteochondral implant made from naturally occurring calcium carbonate in an aragonite structure. It is placed in a single operation to address selected knee cartilage defects together with the underlying bone. It sits inside a prepared focal socket in the joint surface; it is not a spacer placed between the femur and tibia.
Is CartiHeal available at London Cartilage Clinic now?
Yes. CartiHeal is now available through London Cartilage Clinic for suitable patients. The first step is a consultation with Professor Paul Lee to review symptoms, examination and imaging before any operation is recommended or priced.
Is CartiHeal an injection?
No. CartiHeal is a surgical implant. The damaged osteochondral site is prepared and the implant is seated into the cartilage and underlying bone during a single operation.
Who was studied in the CartiHeal clinical trial?
The pivotal study enrolled adults aged 21 to 75 with up to three knee cartilage or osteochondral lesions, a total treated area of 1 to 7 cm² and Kellgren–Lawrence grade 0 to 3. Those study criteria describe the research population; they are not a promise that every patient within those ranges is suitable.
What was CartiHeal compared with?
The randomised trial compared CartiHeal with a surgical standard-of-care arm based on debridement or microfracture. It was not a comparison with every cartilage operation, osteochondral graft or joint replacement.
How long does the implant remain?
Smith+Nephew describes the scaffold as progressively resorbed and replaced by new tissue, with the process occurring broadly over 12 to 18 months. Healing varies and the biological result cannot be guaranteed for an individual patient.
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 your cartilage options—or register interest
CartiHeal is now available for suitable patients. Professor Lee can review your imaging, explain how the implant compares with other cartilage operations and decide whether this is a credible route for your knee.