Structural and material properties of human foot tendons

Area of Science:

• Biomechanics
• Orthopedic Engineering
• Materials Science

Background:

• Understanding human foot tendon mechanical properties is crucial for clinical applications like orthopedic surgery and engineering applications such as developing computational models.
• Structural and material properties of tendons are distinct and relevant for different applications.

Purpose of the Study:

• To assess the mechanical properties of human foot tendons in vitro.
• To differentiate between structural and material properties for clinical and engineering relevance.

Main Methods:

• One hundred uniaxial tensile tests were conducted on human foot tendons harvested from cadaver feet.
• Specimens included Extensor, Flexor, Tibialis Anterior/Posterior, and Peroneus Brevis/Longus tendons.

Main Results:

• Tibialis and Peroneus tendons demonstrated higher strain failure values.
• Flexor and Extensor tendons exhibited higher Young's modulus and ultimate tensile stress.
• Stress-strain curves showed proportionality, with distinct regions for initial strain, toe region, and yield point.

Conclusions:

• Human foot tendons display varied mechanical behaviors based on their function (inversion/eversion vs. flexion/extension).
• These findings provide valuable data for clinical orthopedic surgery and the design of synthetic materials and computational models.