Following damage or injury, as well as normal wear and tear, articular cartilage in adults has limited healing potential. Repair of cartilage is dependent on the extent and depth of the injury, its location, and the surviving chondrocytes and extracellular matrix. The ultimate goal of cartilage repair is to restore the normal composition and matrix of the cartilage, but for most patients this is not feasible. In these cases, filling the defect using interventions that provide adequate, albeit not optimal, functionality and pain relief is desirable. Therefore, a more realistic goal in these patients may be restoration of their respective activity levels and the delay or avoidance of prosthetic replacement. Depending on the age, activity level, and degree of cartilage damage, several methods to decrease pain and attempt cartilage repair are available; these include lavage and debridement, abrasion arthroplasty, and tissue and cell transplantation. Future strategies for cartilage repair may involve tissue engineering techniques, possibly coupled with specific growth factors. Randomized clinical trials must be established.
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Am J Sports Med
January 2025
Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan.
Background: A larger joint line convergence angle (JLCA) increases the stress load on the medial compartment. Few reports, however, have discussed the effect of the JLCA on the cartilage status and clinical outcomes after opening-wedge high tibial osteotomy (OWHTO).
Purpose/hypothesis: To reveal the effect of the JLCA on clinical results after OWHTO.
Am J Sports Med
January 2025
Department of Orthopaedic Surgery/Sports Medicine Center, Southwest Hospital, Army Medical University, Chongqing, China.
Background: The challenge of achieving effective tendon-to-bone healing remains a significant concern in sports medicine, necessitating further exploration. Biomimetic electrospun nanomaterials present promising avenues for improving this critical healing process.
Purpose: To investigate the biological efficacy of a novel aligned-to-random PLGA/Col1-PLGA/nHA bilayer electrospun nanofiber membrane in facilitating tendon-to-bone healing.
J Cell Mol Med
February 2025
Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.
Osteoarthritis (OA) is a degenerative joint disease with a complex aetiology, which includes inflammation, cellular growth dysregulation and extracellular matrix (ECM) degradation. This study investigated the therapeutic potential of a small-molecule compound, 2-amino-4-(3,4,5-trimethoxyphenyl)-4H-benzo[h]chromene-3-carbonitrile (CN7:1h) in modulating these critical biochemical pathways in OA. Cellular models and rat models of OA were used to explore the impact of CN7:1h on the nuclear factor kappa light chain enhancer of activated B cells (NF-κB) and mechanistic target of rapamycin (mTOR) signalling pathways.
View Article and Find Full Text PDFJ Am Acad Orthop Surg
January 2025
From the Department of Orthopedic Surgery, Washington University School of Medicine, St. Louis, MO.
Because of the crucial role of the menisci in maintaining cartilage and joint health, meniscal tears affect the long-term health of the knee. Although partial meniscectomy has a role in the treatment of complex degenerative tears and tears with low healing capacity, advances in the concepts and understanding of meniscal repair, along with improvements in repair techniques and instrumentation, have expanded the indications for meniscal repair. With appropriate patient selection and preoperative planning, repair of meniscal tears can lower the rate of degenerative changes when compared with meniscectomy.
View Article and Find Full Text PDFCell Transplant
January 2025
School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China.
Non-cryo and hypothermic preservations are two available options for short-term storage of living cells. For long-term cell storage, cryopreservation is an essential procedure as it prolongs the storage time, allowing for the transport and testing of cells, as well as the establishment of cell banks. But it is unclear whether cryopreservation reduces the therapeutic effects of human umbilical cord mesenchymal stem cells (hucMSCs) on osteoarthritis (OA).
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