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CompletedNCT07907926CartiSaveUpdated Oct 30, 2026

Clinical Trial of Type II Collagen vs. Sodium Hyaluronate Intra-articular Injection in Knee Osteoarthritis

An interventional study of CartiSave and Hyalforte Injection in Osteoarthritis, Osteoarthritis Knee Pain and Knee Arthritis, sponsored by ATEMs. Completed at 4 sites in South Korea. Open to participants aged 19 Years and older. Per ClinicalTrials.gov, last updated 2026-10-30.

Sponsored by ATEMs · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 11 months after the study started (first participant enrolled Oct 2025, registered Oct 2026).
Updated Oct 30, 2026Newly registeredGo to Updates ↓
Phase
Not applicable
Study type
Interventional
Enrollment
117
Allocation
Randomized
Ages
19 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 101 studies in Osteoarthritis with a site in Korea, Republic of — 6 open to participants now, 11 under way, 3 of them phase 3. Osteoarthritis · Korea, Republic of.

Enrollment
37th of 87
117 · median 106
Started
2025
with 2 others
No phase
28 of 101
3 open now
Registered
101st of 101
by date

Among the 101 studies in Osteoarthritis with a site in Korea, Republic of, this one is the 37th largest by enrollment of the 87 interventional ones, is one of 3 that started in 2025, is one of 28 with no phase, and was the 101st registered.

By phase

101 studies; the count open now beside each. This study's row is marked.

No phasethis study28 · 3 open
Phase 426 · 0 open
Phase 315 · 2 open
Observational14 · 1 open
Phase 28 · 0 open
Phase 1/25 · 0 open
Phase 14 · 0 open
Phase 2/31 · 0 open

By the year they started

First in 1993; this study’s year is marked. 3 started in 2025.

Size and results

Median enrollment 106 across the 87 interventional studies, 319 across the 14 observational. Of the 72 that completed or were terminated, 7 (10%) have results posted.

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Watch this landscapeDownload CSVWith an account: a weekly mail of what changed among 101 studies in Osteoarthritis with a site in Korea, Republic of, or all of them as a file.
02

Study summary

The purpose of this clinical trial is to evaluate the efficacy and safety of CartiSave compared with sodium hyaluronate in patients with knee pain.

Read the detailed description

CartiSave is a medical device composed of porcine-derived type II atelocollagen. Administered via intra-articular injection, it is intended to supplement collagen in damaged articular cartilage.

This multi-center, randomized, single-blind, active-controlled, parallel-group clinical trial is designed to evaluate the efficacy and safety of intra-articular CartiSave injection compared with sodium hyaluronate in patients with knee pain.

Efficacy is assessed using the 100 mm Pain Visual Analogue Scale (VAS), the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and the Short Form-36 Health Survey (SF-36) at baseline and at Weeks 4, 16, and 24. Safety is monitored throughout the 24-week period through adverse event reporting and physical evaluations.

03

Conditions studied

  • Osteoarthritis
  • Osteoarthritis Knee Pain
  • Knee Arthritis

Browse trials for

Keywords

  • Osteoarthritis
  • Knee Joint Pain
  • Intra-articular injection
  • Intra-articular collagen injection
  • Type 2 collagen
04

Who can participate

Ages eligible
19 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • 1. Adults aged 19 years or older
  • 2. Patients who agreed to participate in the study and signed the form
  • 3. Patients whose target knee joint intended for product injection meet all of the following conditions at the screening visit:

    • 1) Knee joint pain due to Osteoarthritis
    • 2) Kellgren-Lawrence (K-L) Grade I to III confirmed by X-ray examination
    • 3) 100 mm Visual Analogue Scale (VAS) pain score of 40mm or higher during activity
    • 4) Absence of significant pathological findings, such as tumors
  • 4. Patients who agree to use medically acceptable methods of throughout the clinical trial period

Exclusion criteria

Exclusion Criteria:

  • 1. Patients with a known or history of allergic reactions to the active substance or any components of the medical device or comparator drug (e.g., porcrine-derived proteins)
  • 2. Patients or their family members with diseases
  • 3. Patients with inflammatory arthritis such as rheumatoid arthritis, lupus arthritis, or psoriatic arthritis
  • 4. Patients with any of the following medical history or conditions at the screening visit:

    • 1) History of radiation therapy or cancer treatment within 2 years
    • 2) Severe knee trauma, surgery, or injection in the knee within 6 months that makes knee evaluation difficult
    • 3) Gout or calcium pyrophosphate deposition disease with onset within 6 months
    • 4) Severe intra-articular effusion
    • 5) Infectious disease requiring hospitalization for the administration of antibiotics
    • 6) , medically uncontrolled disease that may interfere with the study (e.g., hepatic, cardiac, renal, oncologic, diabetic, or psyshiatric disorders)
  • 5. Patients who use as follows at the screening visit:

    • 1) intra-articular injection at the target knee within 3 months
    • 2) systemic drug use within 3 months
    • 3) intra-articular injection at a joint other than the target knee within 4 weeks
    • 4) topical use is permitted except the target knee
  • 6. Patients who have received analgesics or anti-inflammatory drugs within 48 hours prior to the screening visit
  • 7. Patients who are pregnant, breastfeeding, or planning to become pregnant during the trial
  • 8. Patients who have participated in other interventional studies within 30 days prior to the screening visit
  • 9. Patients who are considered inappropriate for participation in this study based on the investigator's judgement
Terms in these criteria, in plain language(7)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
117 participants (actual)

Study arms

  • Experimental
    CartiSave (2mL)

    Device: CartiSave

  • Active comparator
    Sodium Hyaluronate(2mL)

    Drug: Hyalforte Injection

Interventions

  • DeviceCartiSave

    CartiSave is an intra-articular, collagen-based tissue supplement containing porcine-derived cartilage collagen. Administered via intra-articular injection, it is intended to supplement collagen in damaged articular cartilage. It is administered via intra-articular injection once weekly for 3 consecutive weeks (total of 3 injections).

    Also known as: Collagen Supplement Intra articular injection

  • DrugHyalforte Injection

    Sodium hyaluronate is a viscoelastic intra-articular injection approved for the treatment of knee osteoarthritis. It is administered via intra-articular injection once weekly for 3 consecutive weeks (total of 3 injections).

    Also known as: Sodium Hyaluronate Intra articular injection

06

What researchers measure

Primary outcomes

  1. Changes in 100mm- VAS (during activity)

    Knee joint pain during activity is assessed using a 100 mm Visual Analogue Scale (VAS). Scores range from 0 mm (no pain) to 100 mm

    Time frame: From Baseline to Week 16

Secondary outcomes

  1. Changes in 100mm- VAS Pain Score (during activity)

    Knee joint pain during activity is assessed using a 100 mm Visual Analogue Scale (VAS). Scores range from 0 mm (no pain) to 100 mm(worst possible pain)

    Time frame: From Baseline to Week 4 and 24

  2. Changes in 100mm- VAS Pain Score (at rest)

    Resting pain in the target knee is assessed using a 100 mm Visual Analogue Scale (VAS). Scores range from 0 mm to 100 mm

    Time frame: From Baseline to Week 4, 16 and 24

  3. Changes in K-WOMAC

    Joint symptoms and physical function are assessed using the Korean Western Ontario and McMaster Universities (K-WOMAC) index, comprising pain, stiffness, and physical function subscales. Total scores range from 0 to 96, where lower scores indicate better knee joint health and symptom reduction.

    Time frame: From Baseline to Week 4, 16 and 24

  4. Changes in SF-36

    Health-related quality of life is assessed using the 36-Item Short Form Survey(SF-36), which covers physical functioning, bodily pain, general health, vitality, social functioning, and mental health. Scores for each domain range from 0 to 100, where higher scores represent a better health state and higher quality of life.

    Time frame: From Baseline to Week 4, 16 and 24

  5. Changes in Use of Rescue Medication

    The use of rescue medication (acetaminophen) will be assessed based on the average number of tablets taken. Lower usage indicates better pain control.

    Time frame: From Baseline to Day 0, Week 4, 16 and 24

07

Study locations

4 sites
  • Dongguk University Ilsan Hospital
    Gyeonggi-do, Goyang-si 10326, South Korea
  • Seoul National University Hospital
    Seoul, Jongno-gu 03080, South Korea
  • Cha University Bundang Medical Center
    Gyeonggi-do, Seongnam 13496, South Korea
  • Hallym University Kangnam Sacred Heart Hospital
    Seoul, Yeongdeungpo-gu 07441, South Korea
08

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Oct 2025 to primary completion in Jul 2026, 8 months.

Of 135 industry-sponsored interventional studies with no phase under Osteoarthritis, half reached primary completion within 38 months of starting (the median), counting those still running; a quarter within 15 and three quarters within 81. This study's 8 months is below that.

Counting every sponsor, half of 713 studies reached it within 29 months; a quarter within 11 and three quarters within 58.

How these figures are worked out, and which studies are left out of them.

Registered
Oct 26, 2026
First posted
Oct 30, 2026
StartActual
Oct 27, 2025
Primary completionActual
Jul 22, 2026
CompletionActual
Sep 9, 2026
Last update
Oct 30, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Registered
First appeared on the registry. No changes since
Oct 30, 2026
Show all 1 update
  1. Oct 30, 2026
    First appeared on the registry

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

09

Registry details

Key details

Study ID
NCT07907926
Lead sponsor
ATEMs
Responsible party
Sponsor
First posted
Oct 30, 2026
Start date
Oct 27, 2025
Primary completion
Jul 22, 2026
Completion
Sep 9, 2026
Last update
Oct 30, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.

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Discussion

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