ANSYS Plate Fixation Fea — Biomedical Instrumentation & Clinical Sensing

Abstract — ANSYS Plate Fixation Fea

experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. Surgical management of posterolateral tibial plateau (PLTP) fractures is challenging. One reason for this challenge is the lack of suitable internal fixation devices. Our aim was to introduce a novel plate via the anterolateral approach for managing PLTP fractures. The biomechanical testing and finite element analysis (FEA) were performed. PLTP fracture models were created using synthetic tibias (n = 10 within each group). These models were randomly assigned to three groups (groups A-C) and fixed with the lateral locking plate, the posterior buttress plate, and the novel plate, respectively. The vertical displacement of the posterolateral fragments was evaluated using biomechanical testing and FEA under axial loads of 250 N, 500 N, and 750 N. We also evaluated the stress distribution and maximum stress of each fracture model using FEA. Biomechanically, under the same loads of 250 N, 500 N, or 750 N, the vertical displacement was significantly different among the three fixation groups ( p ≤ 0.001). FEA data indicated that the maximum displacement from group A to C was 3.58 mm, 3.23 mm, and 2.78 mm at 750 N, respectively. The maximum stress from group A to C was 220.88 MPa, 194.63 MPa, and 156.77 MPa in implants, and 62.02 MPa, 77.71 MPa, and 54.15 MPa in bones at 750 N, respectively. The general trends at 250 N and 500 N were consistent with those at 750 N. Based on our biomechanical and FEA results, the novel plate could be a good option for treating PLTP fractures. The novel plate showed stable and reliable features, indicating its suitability for further clinical application.

Sensor Interfacing & Analog Front-End Conditioning

With the wide application of computed tomography (CT) in orthopedic trauma, the treatment of posterolateral tibial plateau (PLTP) fractures has become a hotspot in recent years. Previous studies have shown that PLTP fractures account for about 8–15% of all tibial plateau fractures, and the posterolateral column is involved in approximately 54.3% of all lateral tibial plateau fractures 1 . The posterolateral corner of the tibial plateau plays an irreplaceable role in the stability of knee joint flexion. Posterolateral tibial plateau fractures are caused by valgus stress and axial compression stress during knee flexion, which significantly exceed the conventional loads 2 . As this type of fracture belongs to an intra-articular fracture and its stability is poor, most surgeons prefer anatomical reduction and rigid fixation 3 . However, surgical management of PLTP fractures is challenging due to the unique anatomical structures of the posterolateral corner, which is surrounded by the fibular collateral ligament, the fibular head, the common peroneal nerve, and important neurovascular bundles in the popliteal fossa.

Bio-Signal Waveform Analysis & Simulation Findings

Figure 1: Diagnostic Medical Waveform & Bio-Potential Clinical Trace for Ansys Plate Fixation Fea Currently, there is no consensus on the optimal surgical approaches and implants for PLTP fractures. Several reports have indicated that the posterior buttress plate can be inserted via several posterior approaches 4 , 5 . This rigid fixation method can prevent fixation failure and collapse of PLTP fragments. However, due to the abundance of posterior muscle tissues, it is difficult to expose the fracture fragments. Moreover, the posterior approach may result in iatrogenic injuries to the neurovascular bundles in the popliteal fossa. Another commonly used implant for PLTP fractures is the lateral locking plate via the conventional anterolateral approach 6 , 7 . The anterolateral approach has a lower risk of injuries to the important anatomical structures of the posterolateral corner. However, the screws are inserted from the lateral surface, which lacks effective support for the PLTP fragments. Some studies have reported that the fixation strength of the lateral locking plate is weaker than that of the posterior buttress plate 8 . Surgical failure of PLTP fractures managed using the lateral locking plate is not uncommon in clinical practice 7 . Other scholars have tried modified implants for treating these fractures, such as a new rotational support plate 9 , 10 . This plate can be inserted via the anterolateral approach and provide support for the PLTP fragments. However, since the fracture fragment is not fixed by screws, fracture displacement frequently occurs after the operation.

Scope & Clinical Applications

• Real-time multi-parameter vital signs telemetry (ECG, Heart Rate, SpO2, Temperature, Respiration)
• Low-noise Analog Front-End (AFE) conditioning with active Driven Right Leg (DRL) 50 Hz cancellation
• Digital signal processing in MATLAB: Pan-Tompkins QRS detection, FIR/IIR notch, and Continuous Wavelet Transforms
• Finite element tissue bio-electromagnetics and orthopedic mechanical simulations in COMSOL & ANSYS
• Complete Arduino firmware .INO sketches, circuit schematics, and university dissertation reports