tailieunhanh - Tissue Surgery - part 4

Khái niệm như "kết hợp truyền và hấp thụ căng thẳng." Căng thẳng được áp dụng để liên kết, yếu tố lân cận trải qua căng thẳng và giảm kích thước từng chút một cho đến khi biến dạng xảy ra. Tất cả các bộ phận cấu thành sau đó lần lượt để được định hướng càng nhiều càng tốt theo hướng của lực lượng áp dụng | 44 Tissue Surgery pressure often in association with the nonsulfated glycosaminoglycan hyaluronan. Owing to their capacity to attract water molecules large proteoglycan molecules allow MVCAS to resist compression unlike collagen fibrils which resist tension by extending and retracting under mechanical stress. The collagen framework and the intravacuolar spaces give form and stability to the tissue. Microvacuola Biomechanical Behavior A Dynamic Absorbing System Tissue adaptation to mechanical stress would seem to have two aspects 1 ensuring the complete movement of the tendon and 2 preserving peripheral tissue stability. How does the MVCAS accomplish these tasks The system of microvacuolar networks in spite of its chaotic aspect works according to a certain number of A Chaotic Pattern Dynamic System The fibrillar framework of the vacuoles is pseudogeometric polygonal and tends to be similar to pseudoicosahedral so that it can modify its shape and fill space as it occupies surfaces as efficiently as possible. Although the global aspect of the structure is chaotic the hierarchically arranged fractally shaped vacuoles form large pseudopolyedral framework which may span several partial subunits and even shift back and forth. The resulting configuration is highly efficient combining great mechanical strength and lightness. This flexible pre-stressed polygonal architecture is able to assume many shapes thereby providing stability and sliding leading to better metabolism and therefore prolonging the life of the tissue. This tendency to geometric forms is intriguing because it is found in all levels of living matter and seems to be the building block that has developed during the course of evolution. If the microvacuolar system is thought of as a shock absorber the resistance it offers is first minimal and then increases as the load increases. Nevertheless as a shock absorber its function is to maintain the peripheral structures close to but not in contact with the