Mechanical Vibration - A quick and EfficienMethod of Removing Damaged Prosthesis from its Cemented Position

Abstract

Implant replacement or revision surgery in the
human body ranks among the most demanding surgeries
that orthopedic surgeons encounter in modern medicine.
The removal of the hardened bone cement which secures
the implant within the bone, is the cause of a lengthy
operation. Often the use of sharp surgical instruments,
ultrasonic devices etc. are employed, however all these
methods are time-consuming and present various
complications.
This paper describes the use of mechanical vibrations at a
frequency of 40 Hz, on samples of implants anchored in
animal (pig) bone cavities with bone cement. Using a rotary
hammer drill equipped with a specially designed adaptor, to
engage the tip of the implant, good results were obtained.
The implant with its cement mantle was removed in a short
time not exceeding 22 seconds.
The procedure appears to be safe and is accomplished in
a short time, commensurate with what is required in
revision surgery.