12/25/2022 0 Comments Lasertrak process monitor![]() Titanium alloy is the common material for the TFOI due to its excellent biocompatibility for promoting osseointegration, great mechanical properties and high resistance to corrosion. In the second stage, patients with TFOI experience a rehabilitation period, which can take up to 18 months, with gradually increased weight bearing and prosthetic activities. During the second surgery, an abutment is inserted into the end of the implant with the distal end of the abutment penetrating out of the skin, allowing the connection of the artificial limb. During the first surgery, an implant is inserted into the prepared medullary cavity where the anchored feature, such as a self-tapping screw or slightly curved stem, engages with bone, and then the residual limb is left unloaded for 3 to 6 months. In the first stage, two surgical sessions are implemented. TFOI treatment includes two major stages. ![]() Transfemoral osseointegration implant (TFOI), which is treated as an alternative to the prosthetic socket system for transfemoral amputees, has demonstrated notable advantages. These findings highlight that the E-index can be employed as a quantitative justification to assess the degree of osseointegration process without selecting and tracing the resonant frequency based on the geometry of the residual femur. Furthermore, the E-index exhibited a clear trend with a noticeable average increase of 53% against the cure time for all three residual length conditions. The cross-spectrum and colormap of the normalised magnitude demonstrated significant changes during the cure time, showing that application of these plots could improve the accuracy of the currently available diagnostic techniques. The adhesive epoxy with a setting time of 5 min was applied at the femur–implant interface to represent the stiffness change during the osseointegration process. This paper investigates the capability of a vibration-related index (E-index) on detecting the degree of simulated osseointegration process with three lengths of the residual femur (152, 190 and 228 mm). Hence, a robust assessment method on the osseointegration process is essential to shorten the rehabilitation period and identify the degree of osseointegration prior to the connection of an artificial limb. ![]() However, the patients treated with osseointegration implants require a long rehabilitation period to establish sufficient femur–implant connection, allowing the full body weight on the prosthesis stem. ![]() It has been shown to improve patients’ sitting and walking comfort and control of the artificial limb, compared to the conventional socket device. Osseointegration implant has attracted significant attention as an alternative treatment for transfemoral amputees.
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