Abstract
IntroductionArticular cartilage plays a crucial role in preserving the knee joint's structural integrity. Damage can manifest as focal chondral defects or progressive osteoarthritis. Treatment options for knee cartilage damage are multifaceted, encompassing surgical and nonsurgical interventions to repair defects, alleviate symptoms, restore function, and slow disease progression. ObjectivesGain insight and summarize the latest available evidence of knee joint preservation techniques. MethodsThe indications, outcomes, and biological characteristics of operative and nonoperative knee cartilage repair and joint preservation therapies were summarized. ResultsOsteochondral autologous transplantation and osteochondral allograft transplantation offer durable solutions with excellent long-term outcomes. Autologous chondrocyte implantation and matrix-induced autologous chondrocyte implantation are advanced, cell-based therapies effective for larger defects, especially in younger, active individuals. Non-operative therapies such as hyaluronic acid provide symptomatic relief for knee osteoarthritis. Bone marrow aspirate concentrate and platelet-rich plasma show efficacy in alleviating symptoms and improving joint function, presenting a minimally invasive approach with promising results for knee preservation and cartilage repair. ConclusionThe use of minimally invasive and nonsurgical interventions in addressing focal cartilage defects, osteoarthritis, and overall joint preservation has yielded varied results. Although recent literature has exhibited encouraging findings, the existing body of high-level evidence remains limited. The emerging evidence inspires optimism for the future, as medical practitioners shift focus to the next wave of knee cartilage repair and joint preservation methodologies. However, comprehensive research is essential to establish conclusive insights into outcomes, safety profiles, and comparative effectiveness among the diverse available treatments.
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