| Abstract Scope |
Transfemoral osseointegrated percutaneous prosthetic abutments and limbs provide improved range-of-motion and overall comfort during ambulation. The FDA-approved, most widely used, standard-of-care Integra (Molndal, Sweden) OPRA device is anecdotally associated with the highest risk of stress-shielding-related bone loss and implant loosening. Here, we present a Virtual Surgical Planning (VSP) environment that begins with establishing a biomechanical model of the hip. Next, the bone-implant construct is mechanically evaluated through Finite Element Analysis (FEA) under the maximum static loading and, in this newest study, under dynamic loading during walking. The resulting analysis could be utilized by the surgeon for choosing the size of the device to use and where to place it. Further work will evaluate other stiffness-matching strategies (Chmielewska A and Dean D, Acta Biomaterialia, 173: 51-65, 2024, https://doi.org/10.1016/j.actbio.2023.11.011), their effects on implant strength, and the validation of our computational model. |