Trademark 3840-480

IMU application to assess knee spasticity in patients with spinal cord injury

Recently, a team from Northwestern University used a portable IMU system to accurately quantify the degree of knee extensor spasticity in spinal cord injury (SCI) patients, not only validating the reliability and accuracy of the IMU system, but also emphasizing its unique contribution in dynamically assessing changes in spasticity.

The research team innovatively introduced IMU technology into the classical swing test, which can accurately capture the subtle flexion and extension motions of the knee joint by combining with a 3D optical tracking system for real-time, non-invasive monitoring of the subject's knee motion, even in the absence of an external reference to measure the first swing angle (FSA). The experimental results showed that the IMU system and the optical tracking system in the SCI patient population presented a high degree of agreement between the FSA values tested on different days.

This study strongly demonstrates the potential of IMU technology in accurately assessing knee spasticity in patients with spinal cord injury. It not only overcomes the subjectivity and limitations of traditional methods, but also provides a portable and objective assessment tool for the clinic.The introduction of IMU is expected to facilitate the fine-tuning of rehabilitation strategies in the future, bringing more personalized treatment plans to patients, and also opens up new applications for embedded engineers in the development of medical and healthcare devices.