Abstract:
:The menisci are intricately organized structures that perform many tasks in the knee. We review their structure and function and introduce new data about their tibial and femoral surfaces. As the femur and tibia approach each other when the knee is bearing load, circumferential tension develops in the menisci, enabling the transmission of compressive load between the femoral and tibial cartilage layers. A low shear modulus is necessary for the tissue to adapt its shape to the changing radius of the femur as that bone moves relative to the tibia during joint articulation. The organization of the meniscus facilitates its functions. In the outer region of the menisci, intertwined collagen fibrils, fibers, and fascicles with predominantly circumferential orientation are prevalent; these structures are held together by radial tie fibers and sheets. Toward the inner portion of the menisci, there is more proteoglycan and the structure becomes more cartilage-like. The transition between these structural forms is gradual and seamless. The flexible roots, required for rigid body motion of the menisci, meld with both the tibia and the outer portion of the menisci to maintain continuity for resistance to the circumferential tension. Our new data demonstrate that the femoral and tibial surfaces of the menisci are structurally analogous to the surfaces of articular cartilage, enabling consistent modes of lubrication and load transfer to occur at the interfacing surfaces throughout motion. The structure and function of the menisci are thus shown to be strongly related to one another: form clearly complements function.
journal_name
Connect Tissue Resjournal_title
Connective tissue researchauthors
Andrews SHJ,Adesida AB,Abusara Z,Shrive NGdoi
10.1080/03008207.2017.1303489subject
Has Abstractpub_date
2017-01-01 00:00:00pages
271-281issue
3-4eissn
0300-8207issn
1607-8438journal_volume
58pub_type
杂志文章,评审abstract::The critical remembrance of my research activity displays aspects of inconsequence and mental rigidity. Particular probative examples are called to mind. Unpublished observations concerning immortalized dental cells are summarized. As a consequence, if I could start again, I would improve several aspects of my behavio...
journal_title:Connective tissue research
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journal_title:Connective tissue research
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journal_title:Connective tissue research
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