External fixation, in which an implant protrudes from the skin, is typical for lower limb amputees because it enables them to attach a prosthetic to their limb. Soft tissue infection at the skin-external fixator interface is a common condition that can spread to the internal prosthesis device. If prosthesis infection remains undetected, it usually requires surgical removal of the device.
University researchers have constructed an antimicrobial cap to mitigate infection complications of external fixators. The cap slips over the external portion of a fixator and covers the soft tissue surrounding it. The cap is imbued with an antimicrobial agent and fits closely to the soft tissue-fixator interface, providing long-lasting protection against infection.