昆虫身体里叫做基节的部分和人体的髋关节类似，转节旋转进入基节，昆虫的腿就和身体连接到了一起。
双手负重站立，拳心向内，双脚分开与髋同宽。右腿后跨一步，脚跟抬起，身体下蹲，保持这个姿势不变。
本实用新型人工髋关节双动头涉及的是一种人工髋关节的双动半髋装置。
该动作对腿、臀、髋、腰、脊等相关部位的肌肉皆有强化作用。
1·An abnormally small angle is known as "coxa vara" and an abnormally large angle as "coxa valga".
异常小的角称为“髋内翻”，异常大的角称为“髋外翻”。
2·Ball and socket valgus osteotomy in intertrochanteric region of femur for correction of coxa vara in 10 children(14 hips)with ages ranging from 6 to 12 years is reported.
本文报告采用股骨转子间杵臼状外展截骨术治疗儿童髋内翻10例（14髋）。 年龄为6～12岁。
3·Among 14 cases of subluxation of the hip and coxa valgus caused by poliomyelitic paralysis, 5 cases were males and 9 cases were females.
本文报道儿麻后遗髋关节半脱位和髋外翻畸形14例，男性5例，女性9例。
4·Results: bone fractures were cured for all patients. There were no complications including coxa vara, cut out the regular, unconnected bone and the regular loose. The excellent rate was 95.8%.
结果：骨折全部愈合，无髋内翻、内固定切出、骨不连、内固定松动等并发症，优良率95.8%。
5·In the side header, head's linear acceleration, the back coxa angular acceleration and neck angular acceleration are the main factors that affect the force of heading.
侧面头顶球击球力量主要的影响因素有头部线加速度、后髋角加速度和颈部角加速度。