生物力学

Method］Six intact human cadaver lower extremities were used to produce calcaneal intraarticular fracture models, fracture patterns of the model were observed with radiographical technique, and anatomical study was proceeded to observe the fractures and their effects on soft tissues and compartments in foot.

方法］选用6个新鲜的成人足标本，采用多功能生物力学测定仪建立跟骨关节内骨折模型，通过X线片和CT检查确定骨折的发生并观察骨折的形态，解剖观察骨折的走行及其对足部相关软组织、骨筋膜室的影响。

Method］Six intact human cadaver lower extremities were used to produce calcaneal intra??articular fracture models, fracture patterns of the model were observed with radiographical technique, and anatomical study was proceeded to observe the fractures and their effects on soft tissues and compartments in foot.［Result］All specimens were sustained calcaneal intra-articular fractures successfully, 4 were joint depression fracture in x??

方法］选用6个新鲜的成人足标本，采用多功能生物力学测定仪建立跟骨关节内骨折模型，通过X线片和CT检查确定骨折的发生并观察骨折的形态，解剖观察骨折的走行及其对足部相关软组织、骨筋膜室的影响。

But in early resorptive phase in GSB group. The change of BMD, BGP, D-Pyr/Cr and biomechanics index in OVX-PII group were the same as that in OVX-PI group, but the rising range of compressive strength limit in lumbar spine and bend load of femur is bigger than that of JGG, and GSB group. Dynamics osteoblast appeared in large numbers on the surface of os, we can observe the transforming process from osteoblast to osteocyte.

同期预防Ⅱ组的BMD、BGP、尿D-Pyr/Cr及生物力学指标的变化大体维持在预防用药12周时水平，但从数字上看腰椎椎体的压缩强度极限和股骨的弯曲破坏荷载两项的上升幅度均大于健骨颗粒组和骨松宝组，预防II组骨质表面出现成群活跃的成骨细胞，可见成骨细胞往骨细胞转化过程。

Howeer, no biomechanical, histological, or roentgenographic study of retrieed implants has clearly implicated frictional torque as the initiating factor in loosening of either the femoral or acetabular component.

然而，对翻修取出假体的生物力学、组织学或放射影像学研究并未明确表明摩擦扭矩是致股骨或髋臼假体松动的主要因素。

Biomechanics ;; Nursing Care ;; Sacrococcygeal Region ;; Stents ;; Friction ;; Pressure ;; Nursing Methodology Research ;; Patient Care Planning

生物力学；；护理；；骶尾部；；支架；；摩擦；；压力；；护理方法学研究；；病人医疗护理计划

Objective To investigate the effect of posterior pedicle screw instrumentation and determine the impact of alternative surgical strategies to provide guidance for the operation planning. Methods A detailed three-dimensional finite element model of a 40° scoliotic lumbar with pedicle screw instrument were constructed by using the commercial finite element software ANSYS.

目的 通过有限元计算与刚体动力学相结合的方法，模拟后路椎弓根螺钉系统治疗脊柱侧凸的矫形过程，研究矫形过程中的生物力学特性，探讨不同矫形策略对临床结果的影响，为脊柱侧凸的手术规划提供依据。

Fifty rats in the model group underwent ovariectomy, while the other 20 rats in the control group had sham operations. Three months later, 10 rats in the model group and 10 rats in the control group were selected randomly to detect their body weight, uterus weight, BMD of the left femur and lumbar vertebra, biomechanical characteristics of the left femur, levels of serum Ca2 +, Cr, ALP, SOD, MDA and GSH-Px and serumal resistance to OH(superscript -).

4个月龄雌性SD大鼠70只，随机取50只行双侧卵巢切除术，20只行假手术。3个月后随机从手术组和假手术组各取10只大鼠检测体质量、子宫湿重、左侧股骨及腰椎骨密度、生物力学特性和血清生化指标Ca(上标 2+)、肌肝、碱性磷酸酶水平，以确定骨质疏松模型建立成功。

Conclusion］There are the same correct effectiveness and the biomechanical stability in the treatment with the slidable pedicle screw system and universal pedicle screw system,meanwhile there is no effect in the adolescent growth.

结论］滑动椎弓根钉系统治疗脊柱侧凸同样能够达到通用椎弓根钉系统相同的矫形效果及生物力学稳定性，同时它不影响青少年生长发育。

Methods: 28 rabbits were divided into 3 groups (4 animals for every group). All animals were dissected to keep the spine and the pelvis, hip joint, the upper part of the femur, with the anterior and posterior longitudinal ligaments, intervertebral disk and psoas muscle, erector spinae, and supraspinal ligament attached to it.

取家兔12只，分3组，每组4只，解剖后保留枢椎以下完整之脊柱及骨盆、髋关节、上段股骨，不损伤脊柱前、后纵韧带、椎间盘及所附着之腰大肌，保留脊柱背侧的竖脊肌、棘上韧带，置于生物力学拉伸测试仪（日本岛津制作所产AGS-J系列）。

Erector spinae muscle fatigue was found after repetitively lifting and the forces at L5/S1 spinal joint were changed with various lifting technologies in volunteers simulating the lifting tasks in laboratory.

在实验室由健康人模拟造型作业中的搬举动作，结果重复搬举导致竖脊肌疲劳，而生物力学和动力学分析发现搬举姿势、搬举速度和负荷均影响脊柱腰骶关节的受力。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新