Jørgensen U, Larsen E, Varmarken J E
Department of Orthopaedic Surgery, Rigshospittalet University of Copenhagen, Denmark.
Foot Ankle. 1989 Oct;10(2):93-8. doi: 10.1177/107110078901000208.
Previous studies have indicated that the shock absorbency of the heel pad is significant in the pathophysiology of pain conditions connected with heel strike. The purpose of this study was to develop a simple clinically usable method for quantification of the heel pad shock absorbency. The results of our efforts was the HPC-device which consists of a fixing device and a transducer. The HPC-device was found suitable in the evaluation of the heel pad force/deformation characteristics. The reproducibility of heel pad deformation was 0.96. Tests of six cadaver heel pads revealed a high correlation between the HPC result and the shock absorbency found by drop tests. In a normal material (200 heel pads), it was found that the shock absorption decreased with age and that men had significantly higher shock absorbency than women. Men also had significantly thicker heel pads than women. However, there was no linear correlation between the thickness of the heel pad and the shock absorbency, although the thinnest heel pads had the lowest shock absorbency. The HPC-device was found clinically usable and will be used in further testing of the significance of heel pad shock absorption for the development of heel strike dependent over-use injuries.
先前的研究表明，足跟垫的减震能力在与足跟撞击相关的疼痛病症的病理生理学中具有重要意义。本研究的目的是开发一种简单的、可用于临床的方法来量化足跟垫的减震能力。我们努力的成果是HPC装置，它由一个固定装置和一个传感器组成。发现HPC装置适用于评估足跟垫的力/变形特性。足跟垫变形的再现性为0.96。对六个尸体足跟垫的测试表明，HPC结果与落锤试验测得的减震能力之间存在高度相关性。在正常人群（200个足跟垫）中，发现减震能力随年龄增长而下降，男性的减震能力明显高于女性。男性的足跟垫也明显比女性厚。然而，尽管最薄的足跟垫减震能力最低，但足跟垫厚度与减震能力之间没有线性相关性。发现HPC装置可用于临床，并将用于进一步测试足跟垫减震对足跟撞击相关过度使用损伤发展的重要性。
