---
title: Comparison of Efficacy and Safety of Microfracture and Modified Microfracture
nct_id: NCT02539030
overall_status: UNKNOWN
phase: PHASE4
sponsor: Cellontech Co., Ltd.
study_type: INTERVENTIONAL
primary_condition: Defect of Articular Cartilage
countries: South Korea
canonical_url: "https://parkinsonspathways.com/agent/trials/NCT02539030.md"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT02539030"
ct_last_update_post_date: 2015-09-02
last_seen_at: "2026-05-12T06:31:09.285Z"
source: ClinicalTrials.gov (mirrored, no enrichment)
---
# Comparison of Efficacy and Safety of Microfracture and Modified Microfracture

**Official Title:** Random Clinical Trial for Comparison of Efficacy and Safety of Simple Microfracture and Modified Microfracture Using Collagen in the Patients With Knee Cartilage Defects

**NCT ID:** [NCT02539030](https://clinicaltrials.gov/study/NCT02539030)

## Key Facts

- **Status:** UNKNOWN
- **Phase:** PHASE4
- **Study Type:** INTERVENTIONAL
- **Target Enrollment:** 100
- **Lead Sponsor:** Cellontech Co., Ltd.
- **Conditions:** Defect of Articular Cartilage, Osteoarthritis, Traumatic Arthritis
- **Start Date:** 2013-02
- **Completion Date:** 2017-06
- **CT.gov Last Update:** 2015-09-02

## Brief Summary

This study was designed to evaluate the efficacy and safety of a modified microfracture using collagen, and to compare them with those of a simple microfracture to prove the non-inferiority of the modified microfracture using collagen in patients with cartilage defects in their knees.

## Detailed Description

This study was an open-trial study. One hundred subjects participated in it. The study was explained to the subjects and they voluntarily agreed to participate in it. Their eligibility to participate in the study was checked, and they were randomized either into the simple microfracture group or the modified microfracture group using collagen based on a centrally controlled randomization table. They were asked to follow the guidelines of the investigators during the study and to visit the hospital six times\*, including for screening. At each visit, the subjects underwent an examination with doctors, a blood test, an X-ray procedure, an MRI, an observation with the naked eyes, and arthroscopy to evaluate the safety and efficacy of the procedure. (\*If the screening date overlaps with the procedure date, the number of his or her visits would be five.)

## Eligibility

- **Minimum age:** 15 Years
- **Sex:** ALL
- **Healthy Volunteers:** Yes

```
Inclusion Criteria:

\- 1. Patients with cartilage defects in their knee (Including Knee OA and Knee TA) 2. Knee osteoarthritis patients whose Kellgren-Lawrence Grading Scale score is lower than 3 (patients who received simultaneous or previous correction will be excluded).

3\. Patients with misalignment of their tibia and femur, unstable ligament in their knee, or bony defects in the lesions of their knee, and/or who had been treated for alignment 4. Patients who were 15 years old or older 5. Patients or their representative (for adults), or patients and their parent/guardian (for minors), who agreed to participate in the study and signed the informed consent form

Exclusion Criteria:

* 1\. If patients or their families suffer from or have ever suffered from an autoimmune disease.

  2\. Patients who have ever suffered an anaphylactic reaction. 3. Patients who have ever suffered hypersensitivity to an implant. 4. Patients with a history of allergy to porcine or bovine protein. 5. Subjects with inflammatory arthritis, such as rheumatoid and gouty arthritis.

  6\. Subjects with autoimmune disease related arthritis. 7. Subjects who are pregnant and/or breast-feeding and/or plan a pregnancy. 8. Subjects with tumors. 9. Subjects who have undergone radiotherapy or chemotherapy within the last 2 years (Exception: if the possibility of collagen treatment is confirmed with doctor's clinical decision).

  10\. Subjects who are diabetic. (Exception: if the possibility of CartiFill™ treatment is confirmed with doctor's clinical decision, and/or patient's blood glucose level remains within the normal range and/or no other complications by diabetes mellitus.) 11. Subjects with infections, currently on treatment with antibiotics or antimicrobials (Exception: if the possibility of collagen treatment is confirmed with doctor's clinical decision).

  12\. Subjects under adrenocorticoid therapy (Exception: if the possibility of collagen treatment is confirmed with doctor's clinical decision).

  13\. Subjects with psychiatric disorders who are considered inappropriate to participate in this trial by the Principal Investigator.

  14\. Patients who have ever suffered contraindications of the used Fibrin sealant. (The major contraindications are as follows: patients with hypersensitivity to aprotinin and those treatments for severe brisk arterial or venous bleeding.)
```

## Arms

- **microfracture** (ACTIVE_COMPARATOR) — simple microfracture for cartilage defect of knee
- **modified microfracture using collagen** (EXPERIMENTAL) — modified microfracture using collagen (CartiFill) for cartilage defect of knee

## Interventions

- **Microfracture** (PROCEDURE) — simple microfracture
- **CartiFill** (DEVICE) — add collagen when doing microfracture

## Primary Outcomes

- **100mmVAS(Visual Analogue Scale)** _(time frame: 12 month after surgery)_ — It will be evaluated by the VAS score 12 months after surgery of the affected knee of the investigational group and the control group.

## Secondary Outcomes

- **change of 100 mmVAS (Visual Analogue Scale)** _(time frame: screening, 3, 6, 12 and 24 months after surgery)_
- **change of Knee injury and osteoarthritis outcome (KOOS)** _(time frame: screening, 6, 12 and 24 months after surgery)_
- **change of International Knee Documentation Committee (IKDC)** _(time frame: screening, 6, 12 and 24 months after surgery)_
- **the results of MRI and MRI of articular cartilage examination (T2, T2 star, deGEMRIC, UTE, etc.), mMOCART** _(time frame: 12 months after surgery)_

## Locations (12)

- Daejeon Sun hospital, Daejeon, Daejeon, South Korea
- The Catholic University of Korea Bucheon St. Mary's Hospital, Bucheon-si, Gyeonggi-do, South Korea
- The Catholic University of Korea Vincent's Hospital, Suwon, Gyeonggi-do, South Korea
- Inha University Hospital, Incheon, Incheon, South Korea
- Wonkwang University Hospital, Iksan, Jeollabuk-do, South Korea
- Ewha Womans University Mokdong Hospital, Seoul, Seoul, South Korea
- Inje University Seoul Paik Hospital, Seoul, Seoul, South Korea
- Samsung Medical Center, Seoul, Seoul, South Korea
- Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Seoul, South Korea
- Seoul National University Hospital, Seoul, Seoul, South Korea
- The Catholic University of Korea Seoul St. Mary's Hospital, Seoul, Seoul, South Korea
- The Catholic University of Korea St. Paul's Hospital, Seoul, Seoul, South Korea

## Recent Field Changes (last 30 days)

- `status.overallStatus` — added _(2026-05-12)_
- `status.primaryCompletionDate` — added _(2026-05-12)_
- `status.completionDate` — added _(2026-05-12)_
- `status.lastUpdatePostDate` — added _(2026-05-12)_
- `design.phases` — added _(2026-05-12)_
- `design.enrollmentCount` — added _(2026-05-12)_
- `eligibility.criteria` — added _(2026-05-12)_
- `eligibility.minAge` — added _(2026-05-12)_
- `eligibility.sex` — added _(2026-05-12)_
- `outcomes.primary` — added _(2026-05-12)_
- `outcomes.secondary` — added _(2026-05-12)_
- `armsInterventions.arms` — added _(2026-05-12)_
- `armsInterventions.interventions` — added _(2026-05-12)_
- `sponsor.lead` — added _(2026-05-12)_
- `results.hasResults` — added _(2026-05-12)_
- `locations.daejeon sun hospital|daejeon|daejeon|south korea` — added _(2026-05-12)_
- `locations.the catholic university of korea bucheon st. mary's hospital|bucheon-si|gyeonggi-do|south korea` — added _(2026-05-12)_
- `locations.the catholic university of korea vincent's hospital|suwon|gyeonggi-do|south korea` — added _(2026-05-12)_
- `locations.inha university hospital|incheon|incheon|south korea` — added _(2026-05-12)_
- `locations.wonkwang university hospital|iksan|jeollabuk-do|south korea` — added _(2026-05-12)_
- `locations.ewha womans university mokdong hospital|seoul|seoul|south korea` — added _(2026-05-12)_
- `locations.inje university seoul paik hospital|seoul|seoul|south korea` — added _(2026-05-12)_
- `locations.samsung medical center|seoul|seoul|south korea` — added _(2026-05-12)_
- `locations.seoul metropolitan government seoul national university boramae medical center|seoul|seoul|south korea` — added _(2026-05-12)_
- `locations.seoul national university hospital|seoul|seoul|south korea` — added _(2026-05-12)_
- `locations.the catholic university of korea seoul st. mary's hospital|seoul|seoul|south korea` — added _(2026-05-12)_
- `locations.the catholic university of korea st. paul's hospital|seoul|seoul|south korea` — added _(2026-05-12)_

---

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*Source data (authoritative): https://clinicaltrials.gov/study/NCT02539030*  
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