INTRODUCTION The knee menisci are critical to the distribution of tibiofemoral contact stresses. This is demonstrated by the deleterious effects of injury or menisectomy on articular cartilage. Meniscus strains reflect load transfer and function in the normal and injured joint, and measurement of strain can be used to assess the efficacy of surgical repair techniques. However, in vivo measureme...

PURPOSE. To examine changes in acid mucopolysaccharides and collagen expression during meniscal degeneration, tearing, and repair, using menisci excised from knee joint surgeries. METHODS. Menisci excised from 23 patients aged 15 to 80 years who underwent meniscal surgery for flap and bucket handle tears (n=11) and total knee arthroplasty (TKA) for osteoarthritis (n=12) were examined histologic...

BACKGROUND Stem cell regeneration is the holy grail of meniscal tissue repair. Currently, the best treatment is to preserve the original meniscus but if it fails, a partial meniscectomy is indicated to delay the onset of osteoarthritis. MATERIALS AND METHODS The authors present a systematic review to determine the up-to-date evidence underlying the use of mesenchymal stem cells for meniscal r...

Mesenchymal stem cells (MSCs) are defined as pluripotent cells found in numerous human tissues, including bone marrow and adipose tissue. Such MSCs, isolated from bone marrow and adipose tissue, have been shown to differentiate into bone and cartilage, along with other types of tissues. Therefore, MSCs represent a promising new therapy in regenerative medicine. The initial treatment of meniscus...

Radial meniscus tears occur commonly as traumatic in younger patients, well association with concomitant degenerative changes. Traditional management of these has centered around partial meniscectomy; however, there been a more recent trend toward preserving the and attempting repair. Because gapping displacement that frequently occurs tears, repair is often challenging done under high amounts ...

A 19-year-old male professional Taekwondo athlete presented with a 2-year history of pain-free snapping of his right knee. He reported that his right knee joint gave way during games and training and that he could induce pain-free snapping between the proximal-to-fibular head and the lateral knee joint line. None of these physical findings suggested a meniscal pathology or ligamentous instabili...

BACKGROUND Tears of the posterior root of the medial meniscus are becoming increasingly recognized. They can cause rapidly progressive arthritis, yet their biomechanical effects are not understood. The goal of this study was to determine the effects of posterior root tears of the medial meniscus and their repairs on tibiofemoral joint contact pressure and kinematics. METHODS Nine fresh-frozen...

Objectives: Meniscal injuries are among the most common orthopedic in United States. Meniscus repairs frequently achieve stability via capsular based repair techniques. Recent studies on meniscal ramp lesions, postero-lateral tears, and meniscus transplants demonstrate some shortcomings of suture techniques that incorporate menisco-capsular complex (MCC) repair. 1-3 extrusion may also be affect...