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Infrapatellar fat pad-derived mesenchymal stem cell therapy for knee osteoarthritis
Abstract
Purpose The aim of the study was to determine if isolated mesenchymal stem cells (MSCs) derived from the infrapatellar fat pad could effectively improve clinical results when percutaneously injected into arthritic knees. Level of evidence Therapeutic case-control study; Level III. Methods Twenty five stem cell injections combined with arthroscopic debridement were administered to patients with knee OA. A mean of 1.89 × 10(6) stem cells were prepared with approximately 3.0 mL of platelet-rich plasma (PRP) and injected in the selected knees of patients in the study group. Results The mean Lysholm, Tegner activity scale, and VAS scores of patients in the study group improved significantly by the last follow-up visit. No major adverse events related to the injections were observed during the treatment and follow-up periods. The results were compared between the study and control groups, in which the patients had undergone arthroscopic debridement and PRP injection without stem cells. Although the preoperative mean Lysholm, Tegner activity scale, and VAS scores of the study group were significantly poorer than those of the control group, the clinical results at the last follow-up visit were similar and not significantly different between the two groups. Conclusions The short-term results of our study are encouraging and demonstrate that infrapatellar fat pad-derived MSC therapy with intraarticular injections is safe, and provides assistance in reducing pain and improving function in patients with knee OA.
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In Koh and Choi, MSC+PRP resulted in a VAS reduction of -2.2.
“Koh and Choi, 2012 [22] | 25 with knee OA | MSC+PRP | PRP | Lysholm: MSC Δ+26.9; VAS: MSC Δ-2.2.”
From Management of platelet-rich plasma and stem cells versus conventional treatments in musculoskeletal injury repair: A systematic review (2025) · cites this paper as [22]
Mormone et al. and Koh and Choi found that combining adipose-derived MSCs with PRP significantly improved joint function (as measured by the Lysholm and Tegner Activity Scale) and reduced pain compared to PRP alone (P < 0.001).
“Mormone et al . and Koh and Choi found that combining adipose-derived MSCs with PRP significantly improved joint function (as measured by the Lysholm and Tegner Activity Scale) and reduced pain compared to PRP alone ( P < 0.001). [20,22]”
From Management of platelet-rich plasma and stem cells versus conventional treatments in musculoskeletal injury repair: A systematic review (2025) · cites this paper as [22]
In 25 patients with knee OA, MSC+PRP resulted in a Lysholm improvement of +26.9.
“Koh and Choi, 2012 [22] | 25 with knee OA | MSC+PRP | PRP | Lysholm: MSC Δ+26.9; VAS: MSC Δ-2.2.”
From Management of platelet-rich plasma and stem cells versus conventional treatments in musculoskeletal injury repair: A systematic review (2025) · cites this paper as [22]
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Metadata
- Authors
- Koh, Y.-G., & Choi, Y.-J.
- Affiliations
- Yonsei Sarang Hospital (KR)
- ORCID
- Koh, Yong-Gon
- Venue
- The Knee
- Publisher
- Elsevier BV
- Published
- 2012-12
- Volume
- 19
- Issue
- 6
- Pages
- 902-907
- ISSN
- 0968-0160 (ISSN-L)
- OpenAlex
- W2139826506
- Cited by
- 392
- References
- 0
- Citations by year
- 2026: 9 · 2025: 19 · 2024: 17 · 2023: 24 · 2022: 27 · 2021: 34 · 2020: 36 · 2019: 36 · 2018: 49 · 2017: 40 · 2016: 33 · 2015: 18 · 2014: 29 · 2013: 20 · 2012: 1
- FWCI
- 15.92
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- The Knee (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Rheumatology › Osteoarthritis Treatment and Mechanisms
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Mesenchymal stem cell research
- Health Sciences › Dentistry › Periodontics › Periodontal Regeneration and Treatments
- Keywords
- knee osteoarthritis, mesenchymal stem cells, infrapatellar fat pad, stem cell therapy, intra-articular injection, platelet-rich plasma, arthroscopic debridement, analgesia, functional outcome
- MeSH terms
- Adipose Tissue, Adult, Aged, Arthroscopy, Debridement, Female, Humans, Injections, Intra-Articular, Male, Middle Aged, Retrospective Studies, Range of Motion, Articular, Treatment Outcome, Recovery of Function, Osteoarthritis, Knee, Mesenchymal Stem Cell Transplantation, Platelet-Rich Plasma
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