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The purpose of measuring the Chinese proximal tibia morphological index data for the surgery to determine the clinical significance of the observations , and further developed in line with internal fixation provide the basis for Chinese human anatomy of the proximal tibia . Adult healthy people and patients with osteoarthritis of the method or Shanghai East China 112 (158 knees) , aged 20-88 years old , with an average age of 56 years old . Which healthy people 80 knee osteoarthritis patients with 78 knee . Subjects the shooting leg standing full-length X - ray , as required measuring hip - knee - ankle angle (HKA ) , varus tibiofemoral angle (FTA) and the tibial plateau angle ( TP -TSA ) , and then were used tibia on the anterior side of the bone cortex tangent on stage posterior cortical bone tangent reference line segment axis of the tibia and tibia tibial plateau were measured angle (PS). Results HKA average 177.4 ° ± 1.5 °, the FTA average 175.5 ° ± 2.4 ° , TP -TSA average of 84.6 ° ± 2.5 ° , three methods of measuring the inside of PS were 14.0 ° ± 3.0 ° , 11.0 ° ± 2.7 ° , 8.0 ° ± 2.9 °, the outer PS , respectively of 11.2 ° ± 3.1 ° , 8.1 ° ± 2.9 ° , 5.3 ° ± 2.9 ° . Statistical analysis confirmed that the healthy people and patients with osteoarthritis HKA , the FTA between the difference was statistically significant, and for patients with severe osteoarthritis , PS will be significantly reduced . Measured data there were significant differences between the three measurement methods and the inner and outer platform . Conclusions Chinese people tibial plateau varus and backward tendency is more significant than Westerners , FTA, TP-TSA and PS in surgery and clinical research have great practical value .
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