Biomechanical and Morphological Characterization of the Foot in Patients With Posterior Tibial Tendon Dysfunction

What this Trial Is About

Posterior tibial tendon dysfunction (PTTD) is a progressive condition affecting the tendon of the tibialis posterior muscle, leading to symptoms like tendinopathy or rupture. It causes difficulty in locking the mid foot and is a major contributor to adult acquired flatfoot deformity, which can result in severe pain, walking difficulties, foot arch collapse, and joint damage. Current treatment decisions rely on classifications based on pain, foot joint flexibility, tendon condition via ultrasound, and arthritic changes on X-rays, but do not consider foot bone shape or biomechanical function. This research studies the biomechanical and morphological features of the foot in PTTD patients by combining standard clinical assessments with advanced gait analysis and imaging. Participants include 75 PTTD patients across stages I to III and 25 healthy volunteers. The study uses X-rays, ultrasound, MRI, CT scans, and a sophisticated gait analysis lab with a 3D camera system, force plate, and pressure platform to measure kinematics and kinetics of foot joints, focusing especially on the mid foot segment often neglected in previous research. Participants will undergo these diagnostic tests and gait analyses to collect data on joint motion, loading, and bone shape. Researchers will measure kinematic characteristics, center of pressure, angular velocity, joint moments, power absorption and generation, as well as bone morphology over one year. Secondary assessments include foot and ankle functional scores, quality of life surveys, and pain and satisfaction scales. This detailed evaluation aims to improve classification and guide personalized treatment for PTTD patients.

Biomechanical and Morphological Characterization of PTTD