Ateshian G A, Kwak S D, Soslowsky L J, Mow V C
Department of Mechanical Engineering, Columbia University, New York, NY 10032.
J Biomech. 1994 Jan;27(1):111-24. doi: 10.1016/0021-9290(94)90038-8.
Determination of contact areas in diarthrodial joints is necessary for understanding the state of stress within the articular cartilage layers and the supporting bony structures. The present study describes the use of a stereophotogrammetry (SPG) system [Huiskes et al., J. Biomechanics 18, 559-570 (1985) and Ateshian et al., J. Biomechanics 24, 761-776 (1991)] for determining contact areas in diarthrodial joints, using a surface proximity concept similar to the one used by Scherrer et al. [ASME J. biomech. Engng 101, 271-278 (1979)]. This method consists of evaluating the proximity of the articular surfaces to determine joint contact areas using precise geometric models of the joint surfaces obtained from the SPG system, and precise kinematic data, also obtained from SPG. In this study, the SPG method for determining contact areas is compared to other commonly used methods such as dye staining, silicone rubber casting and Fuji film contact measurement techniques which have been often used and reported by other investigators. The bovine glenohumeral joint and the bovine lateral tibiofemoral articulation (without the meniscus) were used to represent congruent and incongruent joints, respectively. While all the methods yielded consistent contact patterns for the incongruent tibiofemoral articulations, the results for the congruent bovine glenohumeral joints showed that the SPG and Fuji film methods were in better agreement than those obtained from the dye staining and silicone rubber casting methods. The advantages of the new SPG method are that it can be used for intact joints, and used repeatedly and quickly thus making contact-area movement analyses possible [Soslowsky et al., J. orthop. Res. 10, 524-534 (1992)]. The results of this comparison study show that the SPG technique is a reliable and versatile method for determining contact areas in diarthrodial joints.
确定动关节的接触面积对于了解关节软骨层和支撑骨结构内的应力状态至关重要。本研究描述了一种立体摄影测量（SPG）系统的使用方法[Huiskes等人，《生物力学杂志》18，559 - 570（1985年）以及Ateshian等人，《生物力学杂志》24，761 - 776（1991年）]，该方法用于确定动关节的接触面积，采用了与Scherrer等人[美国机械工程师学会《生物力学工程杂志》101，271 - 278（1979年）]所使用的类似的表面接近度概念。此方法包括利用从SPG系统获得的关节表面精确几何模型以及同样从SPG获得的精确运动学数据，评估关节表面的接近度以确定关节接触面积。在本研究中，将用于确定接触面积的SPG方法与其他常用方法进行了比较，如染料染色法、硅橡胶铸型法和富士胶片接触测量技术，这些方法已被其他研究者频繁使用和报道。牛的盂肱关节和牛的外侧胫股关节（无半月板）分别用于代表匹配和不匹配的关节。虽然所有方法对于不匹配的胫股关节都产生了一致的接触模式，但对于匹配的牛盂肱关节，结果表明SPG和富士胶片方法的一致性比染料染色法和硅橡胶铸型法更好。新的SPG方法的优点在于它可用于完整关节，并且可以重复快速使用，从而使接触面积运动分析成为可能[Soslowsky等人，《矫形研究杂志》10，524 - 534（1992年）]。这项比较研究的结果表明，SPG技术是一种用于确定动关节接触面积的可靠且通用的方法。
