Condition category
Musculoskeletal Diseases
Date applied
Date assigned
Last edited
Retrospectively registered
Overall trial status
Recruitment status
No longer recruiting
Publication status

Plain English Summary

Background and study aims
Osteoarthritis (OA) is the most common type of arthritis and is a main cause of disability and pain. It occurs when the protective cartilage on the end of bones wears away. The bones then rub against one another, causing stiffness, pain and a reduction in the range of movement. The treatment for OA mostly focuses on helping relieve the pain and control symptoms instead of solving the problem. Recently there have been new ideas and technology in orthopedic surgery (surgery that corrects bones and muscles) that has come up with alternative treatments. Using adipose tissues (fat cells) from a patient could help repair the bones and cartilage if it is injected into the area affected with OA. The new Lipogems® technology is a closed system that is designed to harvest, process and inject adipose tissues back into patients to help repair the area with OA. The aim of this study is to evaluate the outcomes of treating patients with knee osteoarthritis and cartilage lesions with adipose tissue to see if it helped improve the knee’s function and reduce pain.

Who can participate?
Patients aged 40-85 years old with knee osteoarthritis.

What does the study involve?
Participants undergo a physical examination and complete a health questionnaire. They then undergo a surgical procedure using the Lipogems system® which takes fat tissues from the patient's stomach area and then reinjects the fat tissues into the knees. Participants have a blood sample collected during the procedure and as well in the follow up at six and 12 months. They are followed up at three, six and 12 months after procedure to assess the pain level and the function the knee.

What are the possible benefits and risks of participating?
A potential benefit for patients is pain reduction and functional improvement of the affected knee. The main risks are haematoma (swelling) at area where the adipose tissue is taken from and short-term knee pain after the procedure. Participants may feel discomfort during the blood test.

Where is the study run from?
1. Specialty Hospital St. Catherine (Croatia)
2. Genos Ltd. laboratory (Croatia)

When is the study starting and how long is it expected to run for?
September 2015 to January 2018

Who is funding the study?
Specialty Hospital St. Catherine and Genos Ltd. Laboratory (Croatia)

Who is the main contact?
Dr. Andrea Skelin

Trial website

Contact information



Primary contact

Dr Andrea Skelin


Contact details

Specialty Hospital St. Catherine
Bračak 8

Additional identifiers

EudraCT number number

Protocol/serial number

EP 001/2016

Study information

Scientific title

Application of adipose derived mesenchymal stem cells (Ad-MSC) in treating OSTeoarticular and Cartilage lesions



Study hypothesis

The aim of this study is to explore trophic, mitogenic, anti-scarring, anti-apoptotic, immunomodulatory, and anti-microbial clinical effects of autologous adipose-derived stromal/stem cells (Ad-MSC) in treating patients with osteoarticular and cartilage lesions.

Ethics approval

St. Catherine Hospital Ethic Committee, 18/1/2016, ref: EP 001/2016

Study design

Non randomised study

Primary study design


Secondary study design

Non randomised study

Trial setting


Trial type


Patient information sheet

Not available in web format


Knee osteoarthritis


Participants undergo a complete physical examination including X-rays/MRI and biochemical laboratory tests. Participants also complete a specific questionnaire (International Knee Documentation Committee (IKDC)) to assess their health.

Participants then undergo a surgical procedure (lipoaspiration). The Lipogems® technology, patented in 2010 (PCT/IB2011/052204), is a completely closed tool to harvest, wash, process, and reinject human (or animal) lipoaspirates. This surgical procedure consists of two steps: the infiltration step, in which adrenaline, in a saline solution, and very diluted lidocaine are injected to induce vasoconstriction as well as local anesthesia is injected to facilitate the subsequent lipoaspiration and the aspiration step, in which a standard liposuction technique is performed. The tissue is taken from the abdominal subcutaneous adipose tissue.

They then receive intra-articular injection of final product containing derivate of micronized fatty tissue and intact vascular/stromal architecture with pericytes and mesenchymal stem cells (Ad-MSC) into affected knee (or knees)

Participants have plasma blood collection and synovial fluid aspirates of IgG glycom analyses taken during the procedure and 6 and 12 months.

Followed up is done at baseline, 3, 6 and 12 months to measure the pain level and the functioning of the knee (or knees). In addition MRI and dGEMRIC MRI imaging are performed at baseline and at 3, 6 and 12 months.

Intervention type



Drug names

Primary outcome measure

1. Pain in the knee is measured using the visual analogue scale (VAS) at the baseline, 3, 6 and 12 months
2. Function of the knee is measured using Knee Injury and Osteoarthritis Outcome Score (KOOS) at baseline, 3, 6 and 12 months

Secondary outcome measures

1. Matrix synthesis in the cartilage layer (glycosaminoglycan content) delayed gadolinium enhanced MRI (dGEMRIC) imaging technique is applied at the baseline, 3, 6 and 12 months.
2. Changes in IgG glycosylation associated with inflammatory processes analyses of IgG glycom from the blood plasma and synovial fluid (when available) is performed at baseline, 6 and 12 months
3. Subchondral bone edema, morphology of cartilage and soft tissues is measured by MRI scans at baseline and at 3, 6 and 12 months

Overall trial start date


Overall trial end date


Reason abandoned (if study stopped)


Participant inclusion criteria

1. Age 40-85
2. Knee osteoarthritis (radiological Kellgren and Lawrence grade II-IV)
3. Onset of symptoms for more than 6 months in the painful knee
4. Able to follow the instructions of the study
5. Signed an informed consent form

Participant type


Age group




Target number of participants


Total final enrolment


Participant exclusion criteria

1. Age less than 40 years or more than 85 years
2. Chondromatosis or villonodular synovitis of the knee
3. Recent trauma (<3 month) of the symptomatic knee
4. Infectious joint disease
5. Malignancy
6. Patients on anticoagulant therapy with PT ( < 0,70) or suffering from thrombocytopenia and/or coagulation disorder
7. Hypersensitivity to local anaesthetic

Recruitment start date


Recruitment end date



Countries of recruitment


Trial participating centre

Specialty Hospital St. Catherine
Bračak 8

Trial participating centre

Genos Ltd. Laboratory
Hondlova 2/11

Sponsor information


Specialty Hospital St. Catherine

Sponsor details

Bračak 8

Sponsor type

Hospital/treatment centre



Genos Ltd. Laboratory

Sponsor details

Hondlova 2/11

Sponsor type

Research organisation



Funder type

Hospital/treatment centre

Funder name

Specialty Hospital St. Catherine

Alternative name(s)

Funding Body Type

Funding Body Subtype


Funder name

Genos Ltd

Alternative name(s)

Funding Body Type

Funding Body Subtype


Results and Publications

Publication and dissemination plan

The first preliminary data we are planning to present at the 10th International Society for Applied Biological Sciences (ISABS) Conference to be held in June 2017. Planned publication in a high-impact peer reviewed journal in 2019.

IPD sharing plan:
The datasets generated and/or analysed during the current study during this study will be included in the subsequent results publication,

Intention to publish date


Participant level data


Basic results (scientific)

Publication list

2017 results in (added 22/10/2020)
2019 results in (added 23/10/2020)
2019 24 month follow up results in (added 23/10/2020)
2019 sub study in (added 23/10/2020)

Publication citations

Additional files

Editorial Notes

23/10/2020: Publication references added. 22/10/2020: Publication reference and total final enrolment number added.