Table of contents

• Stem Cells For Knee Cartilage Regeneration at a Glance
• What Are Stem Cell Treatment for Knee Cartilage Regeneration?
• Who Is a Good Candidate for Stem Cell Treatment for Knee Cartilage Regeneration?
• How Are Stem Cell Treatment for Knee Cartilage Regeneration Performed?
• Why Visit Korea for Stem Cell Treatment for Knee Cartilage Regeneration?
• Key Information for International Patients
• Which Are the Best Clinics in Korea for Stem Cells For Knee Cartilage Regeneration?
• Stem Cells For Knee Cartilage Regeneration From Start to Finish
• Alternatives to Stem Cell Treatment for Knee Cartilage Regeneration
• How Can I Prepare for Stem Cell Treatment for Knee Cartilage Regeneration?
• Aftercare Advice

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Last updated: August 2026

Stem Cells For Knee Cartilage Regeneration at a Glance

• What it is — CARTISTEM is a surgical cartilage-repair procedure, not an IV therapy or routine knee injection: an allogeneic umbilical-cord-blood MSC and hyaluronate composite is placed into a surgically prepared knee defect.
• Best candidates — Best-supported candidates have a symptomatic, localized ICRS grade IV full-thickness defect on a femoral condyle or trochlea, typically 2–9 cm², with a mechanically stable, adequately aligned knee.
• How it is done — The operation debrides unstable cartilage, drills approximately 3–5 mm holes spaced 2–3 mm apart, then places the cell–hyaluronate composite; osteotomy, meniscal, or ligament surgery may be added when mechanics require it.
• Recovery commitment — Recovery requires protected cartilage rehabilitation rather than a quick return to activity: the pivotal trial used crutches or a walker with no weight bearing for 12 weeks, although some protocols use about 6 weeks.
• Results timeline — Structural repair was evaluated at 48 weeks, so results should be judged over months rather than days; in the Korean trial, 97.7% of CARTISTEM patients versus 71.7% after microfracture improved by at least one macroscopic repair grade.
• Key limitation — It is not intended to regrow an entire arthritic knee: KL grade 4 end-stage osteoarthritis, inflammatory joint disease, severe uncorrected deformity, instability, infection, or relevant product allergies can rule out or delay surgery.
• Korea and travel — South Korea’s distinguishing feature is access to MFDS-approved CARTISTEM, a defined surgically implanted product with Korean randomized-trial data; international patients need surgeon-approved flight timing and local orthopedic and physiotherapy follow-up arranged before travel.

What Are Stem Cell Treatment for Knee Cartilage Regeneration?

Stem cell treatment for knee cartilage regeneration is a procedure that places a cell-and-hyaluronic-acid product into a prepared area of damaged knee cartilage. It aims to repair a localized full-thickness cartilage defect, reduce symptoms, and support knee function while preserving the joint. It is a surgical cartilage-repair procedure, not a routine knee injection or intravenous treatment.

Who Is a Good Candidate for Stem Cell Treatment for Knee Cartilage Regeneration?

• Localized full-thickness defect — Good candidates have symptomatic ICRS grade IV cartilage loss in one knee compartment, typically on a femoral condyle or the trochlea, rather than vague knee pain alone.
• Study-like lesion profile — The pivotal Korean trial enrolled adults with arthroscopically confirmed 2–9 cm² femoral-condyle or trochlear defects. Participants had a mean age of 55.9 years and predominantly Kellgren-Lawrence (KL) grade 1–3 osteoarthritis.
• Joint-preservation goal — Candidates want to address a focal cartilage defect and can accept that this procedure does not regrow an entire arthritic knee or guarantee avoidance of future knee replacement.
• Mechanically correctable knee — Assessment must confirm acceptable limb alignment, meniscal function, ligament stability, knee motion, and lesion containment. Medial-compartment overload from varus alignment can require a concurrent high tibial osteotomy.
• Rehabilitation capacity — Candidates need a safe home setup, reliable physiotherapy, and the ability to follow prolonged crutch or walker restrictions without advancing weight bearing independently.

CARTISTEM is contraindicated in KL grade 4, end-stage radiographic osteoarthritis; rheumatoid or other chronic inflammatory/autoimmune joint disease; and hypersensitivity to bovine protein, hyaluronic acid, anesthetic agents, or gentamicin. Severe uncorrected varus or valgus deformity, significant ligament instability, active infection, uncontrolled medical illness, or uncorrected bleeding and clotting risk also make surgery unsuitable or require treatment first. Pregnancy, breastfeeding, active cancer, immunosuppressive treatment, and previous serious thrombosis need individualized specialist review because product-specific evidence is inadequate. Final eligibility requires examination, standing weight-bearing radiographs, alignment assessment, MRI review, and often arthroscopic confirmation; remote imaging cannot establish it definitively.

How Are Stem Cell Treatment for Knee Cartilage Regeneration Performed?

CARTISTEM is an allogeneic umbilical-cord-blood-derived mesenchymal stromal cell (MSC) and sodium-hyaluronate composite placed surgically into a prepared cartilage defect. It is not an intravenous infusion, exosome treatment, or routine “stem-cell injection.”

• Mini-arthrotomy implantation — The surgeon uses a small open incision to access and contain the defect. In the pivotal trial, this approach followed arthroscopic assessment and subchondral drilling.
• Arthroscopic implantation — Selected defects can be approached through keyhole surgery using a dry field. Suitability depends on defect location, visibility, containment, and the surgeon’s ability to place the composite securely.
• Drilling and composite placement — The labeled technique removes unstable cartilage, creates drill holes approximately 3–5 mm wide and 2–3 mm apart, fills the holes with the MSC–hyaluronate mixture, and applies it to the surrounding defect. The product must not be injected into a blood vessel.
• Combined joint-preservation surgery — High tibial osteotomy can redistribute load in a varus, medial-compartment knee. Meniscal repair or transplantation and ligament reconstruction address separate mechanical problems. These additions substantially change pain control, mobility, rehabilitation, and travel planning.

Why Visit Korea for Stem Cell Treatment for Knee Cartilage Regeneration?

South Korea is the setting in which CARTISTEM was developed, approved, and studied. Its relevant distinction is access to a defined, surgically implanted cell–hyaluronate product rather than an unstandardized stem-cell injection. This does not mean every painful arthritic knee is eligible or that the procedure has been proven superior to every established cartilage-restoration pathway.

• Defined MFDS-approved product — CARTISTEM is approved by Korea’s Ministry of Food and Drug Safety for ICRS grade IV knee cartilage defects associated with degenerative disease or repeated trauma.
• Product-specific clinical evidence — The principal evidence is a Korean multicenter randomized phase 3 trial comparing umbilical-cord-blood MSC–hyaluronate implantation with microfracture in selected adults with single-compartment defects.
• Structural result at 48 weeks — In that trial, 42 of 43 CARTISTEM participants (97.7%) and 33 of 46 microfracture participants (71.7%) improved by at least one ICRS macroscopic repair grade. Pain and functional improvements were not significantly different at 48 weeks.
• Longer-term context, not proof of superiority across all options — The observational 3–5-year extension reported better pain and function in the CARTISTEM group, but it had attrition and did not compare the product with ACI/MACI, osteochondral grafting, osteotomy-led strategies, or arthroplasty. Further operations, including osteotomy and knee replacement, still occurred in both groups.

Key Information for International Patients

• Minimum stay — Do not treat this as a weekend procedure. No CARTISTEM-specific evidence defines a universal discharge day, minimum Korean stay, or safe date for long-haul travel; remain until the operating team confirms wound status, pain control, safe transfers, and correct crutch or walker use.
• Flight timing — Obtain individual clearance before flying. Recent surgery, restricted mobility, and long-haul travel increase venous thromboembolism concerns; the surgeon must set a travel and clot-prevention plan based on surgical details, medical history, and anticoagulation needs.
• Protected mobility — The pivotal protocol used no weight bearing with crutches or a walker for 12 weeks. Other protocols use about 6 weeks, so lesion location, drilling, implantation technique, and any osteotomy, meniscal, or ligament surgery determine the written restriction.
• Itinerary impact — Plan step-free or elevator-accessible lodging, a wheelchair-capable airport transfer, airport assistance, and a companion if independent non-weight-bearing transfers are not realistic. Avoid itineraries involving sightseeing, public-transit stairs, frequent hotel changes, or unsupported luggage handling.
• Follow-up at home — Arrange an orthopedic clinician and physiotherapist at home before surgery. Leave Korea with the operative report, implant record, anesthesia record, medicines list, images, written rehabilitation plan, and direct contact details for the Korean surgical team.
• Remote review — Virtual review can support wound checks and rehabilitation coordination, but urgent symptoms require local in-person assessment rather than waiting for an overseas video consultation.

Travel note: A combined high tibial osteotomy, meniscal procedure, or ligament reconstruction can require a longer local stay and more complex travel arrangements than isolated cartilage implantation.

Which Are the Best Clinics in Korea for Stem Cells For Knee Cartilage Regeneration?

Listed below are some of the best clinics in Korea for stem cells for knee cartilage regeneration.

1. Cellinique Clinic

If you are looking into stem-cell-based care for knee cartilage regeneration in Seoul, Cellinique may be worth considering for its tightly personalized regenerative approach. The clinic is structured as a one-doctor practice dedicated to stem cell research, and its treatment lineup includes stem cell therapy for damaged tissue repair as well as NovaStem, an autologous blood-based regenerative treatment designed to support tissue recovery and cell activation.

• URL: Cellinique Clinic Website
• Location: Gangnam-gu, Seoul
• Procedure approach:
  • The clinic offers stem cell therapy aimed at repairing damaged tissues and supporting overall regenerative function.
  • NovaStem uses concentrated autologous blood and is described as a minimally manipulated cell biotechnology intended to activate aged cells and help regenerate damaged tissues.
  • Complementary regenerative options mentioned in the clinic context include PRP, exosomes, stem cell fat grafting, and blood purification.
• Doctor background:
  • Dr. Chris Gunwoo Kim is presented as the clinic’s stem cell specialist and a speaker on topics including high-concentration blood cell zones, stem cell inducing factor SDF-1alpha injection, anti-aging, and tissue regeneration.
  • He presented Cellinique’s proprietary NovaStem Kit at the 2025 Spring Conference of the Korean Obesity and Aesthetic Treatment Society.
• What to keep in mind:
  • The available context supports a broad regenerative and wellness focus rather than a knee-only orthopedic program.
  • Care is described as 100% personalized, so your plan would be shaped around consultation and your specific condition.

2. SH Clinic

If your main goal is stem-cell treatment for knee cartilage regeneration, SH Clinic stands out in this context because it specifically offers a BMAC stem cell knee injection. This treatment uses concentrated bone-marrow cells delivered into arthritic knees to reduce inflammation and support cartilage repair, with the clinic also emphasizing personalized planning after an in-person consultation and examination.

• URL: SH Clinic Website
• Location: Seocho-gu, Seoul
• Knee-focused treatment:
  • BMAC stem cell knee injection is specifically listed for arthritic knees.
  • The treatment uses concentrated bone-marrow cells.
  • Its stated goals are to calm inflammation, support cartilage repair, reduce pain, and improve mobility.
• Personalization:
  • Your treatment is described as personalized after an in-person consultation and examination by experienced medical staff.
  • The clinic also runs a Wellness & Anti-aging program built around individualized stem cell care.
• Stem cell scope:
  • Beyond knee treatment, the clinic’s stem cell programs also cover disc disease, hair loss, autoimmune disease, cerebral infarction and dementia, skin and cosmetic rejuvenation, and sexual health.
  • The clinic context describes a dedicated stem cell center alongside gynecology services.

3. Lydian Plastic Surgery Clinic

If you are considering stem-cell-based treatment for knee cartilage regeneration and want a clinic with a verified regenerative medicine system, Lydian may be relevant for its certified cell-processing infrastructure. The clinic is described as an Advanced Regenerative Medicine Provider with authorized facilities to extract, test, and process human cells from bone marrow, fat, and blood in a sterile clean-room environment, which is the strongest knee-relevant angle supported by the available context.

• URL: Lydian Plastic Surgery Clinic Website
• Location: Gangnam-gu, Seoul
• Regenerative infrastructure:
  • The clinic is described as an Advanced Regenerative Medicine Provider.
  • Its regenerative system is said to be approved by the Ministry of Health and Welfare and subject to personnel, equipment, training, and on-site inspection requirements.
  • Authorized Cell Processing Facilities are used to extract, test, and process human cells from the initial stages of treatment.
• Cell processing details:
  • The facility maintains Clean Class 10,000 standards.
  • Disposable stem cell extraction kits are used to help minimize infection risk.
  • Cell sources listed in the context include bone marrow, fat, and blood.
• What to keep in mind:
  • The available context supports Lydian’s regenerative medicine platform, but it does not describe a knee-specific stem cell protocol in the same detail as some other clinics.
  • Much of the clinic background emphasizes cosmetic surgery and aesthetic stem cell applications rather than orthopedic care alone.

Stem Cells For Knee Cartilage Regeneration From Start to Finish

1. Remote records review — Send English-language medical history, medication and allergy lists, standing knee radiographs, long-leg alignment films when available, MRI images and report, prior operative reports, injection history, and physiotherapy history. Ask whether English or virtual consultation is available.
2. Pre-travel surgical planning — Discuss the suspected defect, osteoarthritis grade, alignment, meniscus, ligament stability, anesthesia fitness, clot risk, anticipated technique, and whether osteotomy or other knee surgery is being considered. Obtain a provisional rehabilitation and travel plan before booking non-refundable flights.
3. In-person assessment in Korea — The orthopedic team examines gait, knee motion, swelling, stability, and alignment, then reviews imaging and medical risks. Blood tests, anesthesia assessment, and other investigations are ordered when clinically indicated.
4. Arthroscopic confirmation — Arthroscopy evaluates the cartilage lesion directly and confirms whether the defect matches the surgical plan. The pivotal trial required arthroscopic confirmation of an ICRS grade IV defect.
5. Anesthesia and defect preparation — Under the planned anesthetic, the surgeon removes unstable cartilage and prepares the defect. Through arthrotomy or arthroscopy, the labeled method uses drill holes approximately 3–5 mm in diameter and 2–3 mm apart.
6. CARTISTEM implantation — The surgeon places the allogeneic umbilical-cord-blood MSC and sodium-hyaluronate composite into the drilled defect and applies it across the prepared cartilage surface. Concurrent osteotomy, meniscal, or ligament work is performed only when required by the knee’s mechanics.
7. Early postoperative care and discharge — The team manages pain, checks the wound and circulation, teaches safe transfers and crutch or walker use, and starts quadriceps-setting and straight-leg-raise exercises. In the pivotal protocol, knee range-of-motion exercise began on postoperative day 1.
8. Protected rehabilitation — Follow the surgeon’s exact brace, motion, loading, and physiotherapy schedule. Do not substitute another cartilage protocol: published CARTISTEM pathways differ, and combined surgery changes restrictions.
9. Home-country and remote follow-up — Coordinate wound review, rehabilitation progress, and imaging with the Korean surgeon and local orthopedic/physiotherapy team. Structural assessment in the pivotal trial occurred at 48 weeks; function and symptoms can continue to change over subsequent years.

Alternatives to Stem Cell Treatment for Knee Cartilage Regeneration

The appropriate alternative depends on whether the main problem is a focal cartilage defect, malalignment, meniscal or ligament failure, or diffuse end-stage osteoarthritis. Surgical options can restore or protect a localized joint surface but require major rehabilitation; injection-based biologics are less invasive but are not interchangeable with CARTISTEM implantation and do not correct a mechanical overload problem.

Microfracture or Drilling

• Best fit — A focal cartilage defect where marrow-stimulation surgery is appropriate.
• Tradeoff — It is a one-stage surgical option and was the comparator in the CARTISTEM trial, but it produces a different repair strategy and does not use an implanted MSC–hyaluronate composite.

Osteochondral Grafting or ACI/MACI

• Best fit — Selected focal lesions needing cartilage-restoration strategies based on defect size, location, bone involvement, prior surgery, and local availability.
• Tradeoff — Osteochondral autograft or allograft transfers cartilage and underlying bone; autologous chondrocyte implantation and matrix-induced ACI use the patient’s own expanded cartilage cells. Direct long-term comparisons with CARTISTEM remain limited.

High Tibial Osteotomy

• Best fit — Medial-compartment disease driven by varus alignment and excessive load on the inside of the knee.
• Tradeoff — Correcting alignment can be more important than placing any cartilage product. It is a bone-cutting operation with a longer and more demanding recovery, and it can be combined with cartilage repair.

Arthroplasty

• Best fit — Diffuse, end-stage osteoarthritis, especially KL grade 4 disease, where focal cartilage restoration is not an appropriate substitute.
• Tradeoff — Partial or total knee replacement treats a different clinical problem and replaces damaged joint surfaces rather than attempting focal cartilage repair.

Autologous Cell, BMAC, or PRP Procedures

• Best fit — Separate treatment discussions for selected symptoms or diagnoses.
• Tradeoff — Autologous stem cell therapy, stem cell injection, and PRP injection differ in cell source, processing, delivery, regulation, and evidence. They should not be marketed as equivalent to surgically implanted CARTISTEM.

How Can I Prepare for Stem Cell Treatment for Knee Cartilage Regeneration?

• Supply complete records — Send radiographs, MRI images and report, alignment studies, prior surgical records, physiotherapy history, medication list, allergies, and records of clotting, bleeding, heart, lung, diabetes, cancer, or immune conditions.
• Disclose medicines and supplements early — Report prescription anticoagulants, antiplatelet drugs, NSAIDs, corticosteroids, diabetes medicines, hormone therapy, injectable weight-loss medicines, and all supplements or herbal products. Do not stop aspirin, warfarin, apixaban, clopidogrel, or any prescribed medicine on your own; the surgical and prescribing teams must give the plan.
• Control infection risks — Report fever, respiratory illness, urinary symptoms, dental infection, skin wounds, or a rash near the operative knee before travel. Active infection generally requires postponement.
• Follow fasting instructions exactly — The anesthesia team will specify when to stop solid food, clear fluids, alcohol, and nicotine products. These requirements depend on the anesthetic and medical history.
• Prepare the knee — Do not shave, wax, or use irritating products around the surgical knee unless the clinic instructs otherwise. Protect the skin from cuts, sunburn, and infection before surgery.
• Plan non-weight-bearing living — Book accessible accommodation with a walk-in shower or bathing plan, minimal steps, an elevator, and enough space for crutches or a walker. Arrange a companion, wheelchair-capable transfer, and airport assistance.
• Keep travel flexible — Use changeable return flights and travel insurance that covers medical changes where available. Do not commit to long-haul departure until the operating surgeon approves the wound, mobility, and VTE-prevention plan.

Travel note: Ask for the exact brace, range-of-motion, loading, physiotherapy, medication, and flight guidance in writing before surgery, especially when osteotomy or meniscal or ligament surgery is planned.

The treating doctor’s individualized instructions take precedence over this general guidance; confirm the clinic’s exact requirements before travel.

Aftercare Advice

Protecting the implant and following the prescribed loading plan are central to this operation’s recovery; pain improvement does not mean the cartilage repair is ready for normal activity.

• Weight bearing — Use the brace, crutches, or walker exactly as prescribed. The pivotal CARTISTEM trial required no weight bearing for 12 weeks, while other protocols use shorter restriction; do not progress based on a generic online timetable.
• Rehabilitation — Start and continue only the exercises assigned by the team. In the pivotal protocol, quadriceps-setting and straight-leg raises began on surgery day and range-of-motion work on postoperative day 1. Formal physiotherapy should address motion, swelling, quadriceps control, gait, and gradual loading.
• Protect the repair — Avoid pivoting, deep loaded flexion, squatting, running, jumping, impact activity, and sport until the surgeon clears them. Restrictions depend on lesion site, drilling, and concurrent osteotomy, meniscal, or ligament surgery.
• Wound care and bathing — Keep dressings and incisions clean and dry as instructed. Do not soak the knee in a bath, pool, or hot tub until the surgical team confirms that the wound has healed.
• Urgent warning signs — Seek urgent local care for fever, worsening redness or drainage, uncontrolled pain, a suddenly swollen or painful calf, chest pain, shortness of breath, fainting, new numbness or weakness, or inability to move the foot.
• Results and review — Expect recovery over months, not days. The trial’s structural evaluation was at 48 weeks, and pain, gait, strength, and function can continue evolving for years. Persistent or worsening pain needs assessment for repair failure, osteoarthritis progression, malalignment, instability, meniscal deficiency, infection, or rehabilitation problems—not automatic repeat cell treatment.

Follow the treating surgeon’s written instructions over general advice and contact the clinic promptly when the wound, swelling, pain, mobility, or breathing appears wrong.