Voloshin A S, Wosk J
J Biomed Eng. 1983 Apr;5(2):157-61. doi: 10.1016/0141-5425(83)90036-5.
The principles of a noninvasive measurement of the shock absorbing capacity of the knee are presented. Accelerometry, which has been proven to be a useful tool for noninvasive measurements in biomechanical investigation, was employed for quantitative evaluation of the knee's shock absorbing capacity by registration of bone vibrations resulting from the gait. Results of the experiments show that both patients with painful knee and patients after meniscectomy suffer from insufficient shock absorbing capacity of the knee. It was found that the shock absorbing capacity of a normal knee is about 20% higher than that of a pathological one. The results indicate that while meniscectomy may reduce pain, instability, swelling, etc. in an injured knee, it cannot improve its reduced shock absorbing capacity, which eventually will lead to development of degenerative osteoarthritis. It seems that the pain syndrome is a biological reaction to severe repetitive overloading of the knee. Noninvasive in vivo determination of the knee's shock absorbing properties may be useful as an additional clinical technique to reveal a knee's pathology. It may lead to early discovery of knee insufficiency, so that preventive steps can be taken to delay or reverse the process of degeneration.
本文介绍了一种无创测量膝关节减震能力的原理。加速度测量法已被证明是生物力学研究中无创测量的有用工具，通过记录步态引起的骨骼振动，用于定量评估膝关节的减震能力。实验结果表明，膝关节疼痛患者和半月板切除术后患者的膝关节减震能力均不足。研究发现，正常膝关节的减震能力比病理状态下的膝关节高出约20%。结果表明，虽然半月板切除术可能会减轻受伤膝关节的疼痛、不稳定、肿胀等症状，但并不能改善其降低的减震能力，最终会导致退行性骨关节炎的发展。疼痛综合征似乎是膝关节严重反复过载的一种生物学反应。无创体内测定膝关节的减震特性，作为一种额外的临床技术，可能有助于揭示膝关节的病理状况。它可能导致早期发现膝关节功能不全，从而采取预防措施来延缓或逆转退变过程。
