Fon G T, Pitt M J, Thies A C
AJR Am J Roentgenol. 1980 May;134(5):979-83. doi: 10.2214/ajr.134.5.979.
Thoracic kyphosis was measured on chest radiographs of 316 "normal" subjects by means of a modification of the Cobb technique for measuring scoliosis. Patients were accepted as "normal" if they had no thoracic or spinal complaints or radiographic abnormalities in the chest including the thoracic spine. A total of 159 males and 157 female subjects 2-77 years old was studied. The relation among age, gender, and kyphosis were determined using least squares fits of first-order linear mathematical models. These results were also used to determine the expected ranges of kyphosis for a "normal" patient of a given age and gender. The degree of kyphosis increased with age and the rate of increase was higher in females than in males. Clinical explanations for this differential increase are discussed.
通过改良的测量脊柱侧弯的Cobb技术，在316名“正常”受试者的胸部X光片上测量胸椎后凸。如果患者没有胸部（包括胸椎）的胸部或脊柱不适或影像学异常，则被视为“正常”。共研究了159名男性和157名年龄在2至77岁之间的女性受试者。使用一阶线性数学模型的最小二乘法拟合来确定年龄、性别和后凸之间的关系。这些结果还用于确定给定年龄和性别的“正常”患者的后凸预期范围。后凸程度随年龄增加，女性的增加速率高于男性。讨论了这种差异增加的临床解释。
