Update in Tissue Engineering Methods for Meniscal Tear of knee Joint

An, Ji Hyun; Yang, Jin Young; Im, Gun Il

Abstract

Meniscal tear of knee joint has been known to be one of the most important risk factors to cause knee osteoarthritis. For meniscal tear, in vascular peripheral zone meniscal repair for healing is recommended to preserve knee articular cartilage and in avascular central zone it is recommended partial meniscectomy that preserves intact meniscal rim as much as possible. Recent strategy for meniscal lesion has been established from meniscectomy to meniscal repair as the role of meniscus for preserving articular cartilage has proved to be critical. Even after total meniscectomy, the efforts to preserve meniscus do not decrease and in these cases, meniscal allograft is transplanted to meniscal deficient knee. Although there are so many methods to preserve meniscus, the clinical results are doubtful about cartilage degeneration due to low regenerative potency of meniscus. Nowdays, tissue engineering is reported to be promising treatment modality for not only stimulating lesion healing but also replacing entire meniscus by tissue engineered prosthesis. The authors introduced recent tissue engineering methods for healing torn meniscus and total replacement of meniscus with respect to substituting cells and stimulating growth factors, scaffolds for meniscal regeneration, tissue engineering for meniscal healing, meniscal prosthesis.