New methods for assessing cartilage contact stress after articular fracture
New methods for assessing cartilage contact stress after articular fracture
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DOI：
10.1097/01.blo.0000132633.38338.8b
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发表时间：
2004-06-01
影响因子：
4.2
通讯作者：
Grosland, NM
中科院分区：
文献类型：
--
作者：
Brown, TD;Rudert, MJ;Grosland, NM
在减少创伤后关节炎的发病率和严重程度方面的进展部分取决于避免残余局部不协调的有害应力水平。系统的努力，以阐明不利影响软骨的机械环境的因素，反过来又取决于适当的方式来评估关节内接触应力的可用性。这一直是并且仍然是一个具有挑战性的生物力学问题。过去使用的技术方法包括数学分析和留置物理传感器，每种方法都有优点和局限性。两种新出现的、相互补充的能力显示出极大地改变这一重要领域的最新技术水平的希望。这些方法中的第一种，基于体素的接触有限元分析，提供了准确的计算估计软骨应力的患者特定的基础上，这样做，同时容纳任意特异性的局部关节不协调的模式。第二种方法，instrumentational，涉及瞬态压力分布记录使用专门设计的压阻阵列传感器。这两个新的评估技术的业务考虑进行了说明，并概述了未来发展的前景。
Progress in reducing the incidence and severity of posttraumatic arthritis depends in part on avoiding deleterious stress levels at residual local incongruities. Systematic efforts to elucidate factors adversely influencing cartilage's mechanical environment in turn depend on the availability of suitable modalities to assess intraarticular contact stresses. This has been and remains a challenging biomechanical problem. Technologic approaches used in the past have included mathematical analyses and indwelling physical sensors, each with advantages and limitations. Two emerging, mutually complementary capabilities show promise of dramatically altering the state of the art in this important field. The first of these methodologies, voxel-based contact finite element analysis, provides accurate computational estimates of cartilage stress on a patient-specific basis, and does so while accommodating arbitrarily idiosyncratic patterns of local articular incongruity. The second methodology, instrumentational, involves transient pressure distribution recordings using specially designed piezoresistive array sensors. Operational considerations for both of these new assessment technologies are described, and promising directions for future development are outlined.