Late removal of titanium hardware from the elbow is problematic

Area of Science:

• Orthopedic surgery
• Biomaterials science
• Medical device engineering

Background:

• Bone screws are commonly used in elbow surgeries.
• Hardware failure during removal can complicate patient recovery.
• Titanium alloy and stainless steel are prevalent implant materials.

Purpose of the Study:

• To investigate factors influencing bone screw removal failure in the elbow.
• To compare failure rates between titanium alloy and stainless steel implants.
• To assess the impact of implantation duration on screw removal outcomes.

Main Methods:

• Retrospective review of 21 patients undergoing elbow bone screw removal.
• Analysis of implant material (titanium alloy vs. stainless steel).
• Correlation of implantation duration and screw location with hardware failure.

Main Results:

• Five of 21 patients experienced hardware failure during extraction.
• Titanium screws showed no statistically significant difference in failure compared to stainless steel (P = 0.61).
• Removal after 12 months significantly increased the risk of screw fracture, especially for titanium (P = 0.003).

Conclusions:

• Longer implantation duration (≥12 months) is associated with increased bone screw failure during removal from the elbow.
• Titanium alloy screws may be more susceptible to fracture after prolonged implantation due to properties like osseointegration.
• Further research into material science and surgical techniques for long-term implants is warranted.