Journal
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
Volume 30, Issue 4, Pages 1138-1150Publisher
SPRINGER
DOI: 10.1007/s00167-021-06497-9
Keywords
Autologous chondrocyte transplantation; Knee; Regeneration; Cartilage; Cell-based; Stem cells; Meniscus; Anterior cruciate ligament; Leg axis; Osteotomy
Categories
Funding
- European Union Horizon 2020 research and innovation programme (EU) [814444]
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Cell-based regenerative therapies for cartilage repair have become the standard of care for treating focal, traumatic chondral defects of the knee. The whole joint approach addressing all comorbidities, along with advancements in biomaterials and alternative cell sources, may lead to cell-based regenerative therapies becoming the gold standard for treating all knee structures in the future.
Purpose This article provides an update on the current therapeutic options for cell-based regenerative treatment of the knee with a critical review of the present literature including a future perspective on the use of regenerative cell-based approaches. Special emphasis has been given on the requirement of a whole joint approach with treatment of comorbidities with aim of knee cartilage restoration, particularly in demanding conditions like early osteoarthritis. Methods This narrative review evaluates recent clinical data and published research articles on cell-based regenerative treatment options for cartilage and other structures around the knee Results Cell-based regenerative therapies for cartilage repair have become standard practice for the treatment of focal, traumatic chondral defects of the knee. Specifically, matrix-assisted autologous chondrocyte transplantation (MACT) shows satisfactory long-term results regarding radiological, histological and clinical outcome for treatment of large cartilage defects. Data show that regenerative treatment of the knee requires a whole joint approach by addressing all comorbidities including axis deviation, instability or meniscus pathologies. Further development of novel biomaterials and the discovery of alternative cell sources may facilitate the process of cell-based regenerative therapies for all knee structures becoming the gold standard in the future. Conclusion Overall, cell-based regenerative cartilage therapy of the knee has shown tremendous development over the last years and has become the standard of care for large and isolated chondral defects. It has shown success in the treatment of traumatic, osteochondral defects but also for degenerative cartilage lesions in the demanding condition of early OA. Future developments and alternative cell sources may help to facilitate cell-based regenerative treatment for all different structures around the knee by a whole joint approach.
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