Proximal interphalangeal joint arthrodesis using powered staple fixation. Observations on autopsy specimens

Area of Science:

• Orthopedic surgery
• Biomedical engineering
• Skeletal research

Background:

• Internal fixation techniques are crucial for joint fusion.
• Arthrodesis aims to stabilize painful or unstable joints.
• Small joint arthrodesis presents unique surgical challenges.

Purpose of the Study:

• To evaluate the biomechanical properties of a new power-driven staple technique for small joint arthrodesis.
• To compare the novel technique with the established tension-band technique in simulated proximal interphalangeal (PIP) joint arthrodesis.
• To determine the optimal staple configuration for the new technique.

Main Methods:

• Simulated proximal interphalangeal (PIP) joint arthrodesis was performed on autopsy specimens.
• Biomechanical properties of power-driven staples (three 7- x 7-mm) were assessed.
• The tension-band technique was used as a control for comparison.

Main Results:

• The power-driven staple technique demonstrated comparable biomechanical properties to the tension-band technique.
• No significant difference in biomechanical properties was observed between the two techniques.
• The use of three 7- x 7-mm staples is recommended for the novel technique.

Conclusions:

• While the new power-driven staple technique shows promise and similar biomechanical performance, the tension-band technique is still considered the preferred method for small joint arthrodesis.
• Further research may be needed to optimize the power-driven staple technique for clinical application.