New research collects recommendations for bone-anchored prosthetic limbs

This article explores new research collecting recommendations for bone-anchored prosthetic limbs, also known as osseointegration devices. Osseointegration is a reconstructive surgery that connects a prosthetic implant directly to the bone, offering numerous benefits over traditional socket prostheses. Eric Earley, Ph.D., an assistant research professor of orthopedics at CU Anschutz School of Medicine, emphasizes the importance of a team approach in building a consensus among experts to provide patients with the best possible outcomes.

Osseointegration involves an intramedullary implant inside the bone and a percutaneous adapter that protrudes through the skin, where the prosthesis connects. The safety connector or adapter disconnects in high load situations to protect the implant from transferring forces into the bone, preventing potential fractures. The prosthetic componentry resembles a standard socket prosthesis but is individualized for each patient.

A Delphi consensus study, an iterative and anonymous process, was conducted to develop foundational alignment among experts. The study aimed to address the lack of scientific evidence and recommendations for bone-anchored prosthetic limbs. Patient safety is paramount, as the prosthetic care is highly individualized. The research focuses on protecting the bone from inadvertent forces and torques, with a recommended torque absorber and safety connector to minimize risks of injury.

Carbon-fiber prosthetic feet are commonly used, but simple feet like SACH feet are generally not recommended for bone-anchored limbs. The threshold for safety connector connection must be carefully set to prevent disconnection or excessive force transfer into the implant, ensuring patient safety.