Morphology of the human aorta and age-related changes: anatomical facts / 대한해부학회지

Aorta is the largest artery in the human body. Its starting point is the aortic orifice of the aortic valve and it terminates at the level of the fourth lumbar vertebra. The main function of the aorta is to transport oxygenated blood to supply all the organs and cells. With advancing age, the structure and hence the function show progressive changes. Various changes in the aortic morphology include the luminal diameter of aorta, whole length of the aorta, thickness, the microstructural components also change, and these include collagen, elastin and smooth muscle cells. In addition, the dimensions of all segments of the aorta increase with age in both sexes. Since age is a major risk factor for degenerative change and diseases affecting the aorta, understanding the detailed anatomy of the aorta may provide essential information concerning the age-associated process of the aorta. Knowledge of the morphological changes in the aorta is also important for future clinical therapies pertaining to aortic disease. Additionally, the information regarding the structural changes with age may be applied for age determination. This review describes the overview of the anatomy of the aorta, age related changes in the morphology of the aorta and aortic diseases.

Association between age and dynamic balance capability assessed by use of force plates / 体力科学

This study aimed to evaluate dynamic balance capability, bathyesthesia, and the composite compensation of bathyesthesia and visual sense for dynamic balance assessed by use of force plates and to examine their correlation to age in a cross-sectorial manner. Participants of this study were 147 healthy people (55 men, 92 women). To evaluate dynamic balance capability, we evaluated the index of postural stability (IPS), which is the logarithmic value of the ratio of the area of stability limits to the area of postural sway, with participants standing on a hard surface with eyes opened. To measure bathyesthesia, we evaluated the modified index of postural stability (MIPS), i.e., the IPS with participants standing on a soft surface with eyes closed. As for the composite compensation index of bathyesthesia and visual sense for dynamic balance, we calculated the rubber IPS Romberg ratio (MIPS/IPS). The correlation coefficients (Spearman’s rho) of IPS, MIPS and MIPS/IPS to age were −0.666 (p < 0.001), −0.697 (p < 0.001) and −0.600 (p < 0.001), respectively. These results suggest that dynamic balance capability and bathyesthesia decline with advancing age, and the composite compensation of bathyesthesia and visual sense for dynamic balance strengthens with advancing age.

Change of Age on Adenoidectomy in 1990s / 대한이비인후과학회지

BACKGROUND AND OBJECTIVES: Adenoid enlargement occurs most commonly between the age of three and ten. Atrophy usually begins at the age of ten and is completed before the age of twenty. In recent years, an increasing number of adolescents undergoing adenoidectomy has been noticed. We investigated the age change in 1990s. MATERIALS AND METHOD: A retrospective study was performed on 1,198 patients who underwent adenoidectomy due to adenoid vegetation confirmed by physical, radiologic, and endoscopic studies. The mean age was analyzed annually and the period of 1990s was divided into the first (from January 1990 to December 1994) and second half (from January 1995 to December 1999). In addition, the same analysis was performed for each age group below ten and above eleven. RESULTS: The study showed that the mean age of study population was 7.35, with the mean age of the first half being 7.10 and the second 7.52. Specifically, the mean age of the group below ten was 6.37 in the first half and 6.16 in the second half, and the group above eleven was 12.56 in the first half and 13.32 in the second half. CONCLUSION: The mean age of the patients who underwent adenoidectomy have increased during the econd half, especially in the age groups greater more than eleven.