Evaluating the properties of human finger tendon by using high frequency ultrasonic elastography

  • 蕭 延益

Student thesis: Doctoral Thesis

Abstract

Hand injuries mostly occur in youth group usually resulted from exercise and working The treatments of hand injury are usually the long-term rest with the fixation by splint except some acute injuries To understand the effectiveness of therapy evaluation of the hand functionality after resting is essential to the patient and therapist Traditional way to evaluate the performance of the hand after injury is the motion test patients perform a specific hand gesture to evaluate its performance like force value range of motion force duration etc Ultrasound elastography has been a reliable way to acquire the mechanical property of soft tissue so are tendons Previous researches have been utilized this technique to access tissue properties in different statements of movement However these tissues are the muscle and tendon with larger thickness in human less topics are focus on small tendon Our study used high frequency ultrasound transducer and high frame rate ultrasound system to measure the shear wave velocity of the human digital extensor tendon in different movements and force value Two movements of human finger are extension and flexion We also measured the shear wave speed of porcine tendons during their tensile test as the reference of human test External vibrator generated low frequency tissue vibration caused shear wave on the extensor tendon of human and the digital flexor tendon of porcine in our study Results showed the linear relationship between the shear wave speed and stress of the tendon in animal test and the stress from loadcell reading in human test and animal experiment The human result of finger flexion has less dispersion in data distribution and more likely to the animal result than finger extension These results can be a reference to the patients for rehabilitation
Date of Award2019
Original languageEnglish
SupervisorChih-Chung Huang (Supervisor)

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