Digital artery tortuosity and elasticity: a biomechanical study

Area of Science:

• Vascular anatomy
• Biomechanical engineering
• Surgical research

Background:

• The digital artery's structure varies significantly distal to the proximal interphalangeal joint.
• Over 50% of fingers show marked tortuosity of the digital artery near the distal interphalangeal joint.
• Bending structures possess inherent spring-like properties.

Purpose of the Study:

• To investigate the biomechanical properties of the distal digital artery.
• To understand how the artery's structure influences its function in finger tip replantation.
• To determine the elastic strength and energy storage capacities of the distal digital artery.

Main Methods:

• Measurement of elastic strength in 26 cadaver digital arteries.
• Assessment of energy storage capacities in the distal digital artery segments.
• Analysis of arterial properties relevant to surgical anastomosis.

Main Results:

• The distal digital artery demonstrates significant tortuosity, imparting spring-like biomechanical characteristics.
• Quantified elastic strength and energy storage capacities were recorded for the distal digital artery.
• Findings indicate a potential for spring-like behavior in the digital artery's distal portion.

Conclusions:

• The inherent spring properties of the distal digital artery, arising from its tortuosity, are significant.
• Understanding these biomechanical properties is vital for developing tension-free anastomoses in digital replantation surgery.
• This research provides foundational data for improving outcomes in finger tip revascularization procedures.