CPT® Code 0547T

Bone material quality testing by microindentation(s) is a specialized invasive diagnostic procedure aimed at assessing the mechanical properties of bone, particularly focusing on the stiffness of the cortical bone. This test is performed using a hand-held micro-indentation device that involves inserting a sterile probe through the skin to create a series of indentations or microscopic fractures in the tibia. The primary objective of this testing is to provide valuable insights into the bone's mechanical characteristics, which can significantly influence the outcomes of orthopedic implant procedures. Understanding the stiffness of the bone is crucial for surgeons, as it informs them about the amount of force required to properly seat an implant. For instance, stiffer bones necessitate greater force during implantation, while more pliant bones may require less force but could lead to a higher risk of implant loosening. This procedure is particularly relevant for elderly patients, who often exhibit more porous bones with diminished stiffness, thereby increasing the likelihood of complications such as a loose fit of prosthetic joints or fractures during the implantation process. The testing process involves careful positioning of the patient, administration of local anesthetic, and precise execution of indentation measurements, followed by a comparison of these measurements against a reference material to derive a bone material strength index score.