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Biomechanical Weight-Bearing Prescription for Tibia diaphysis | ComeBack Mobility Case Study Description: In this case study, ComeBack Mobility presents a personalized biomechanical analysis for a 45-year-old Female patient with a Tibia diaphysis (AO Classification: 43-B1). 43-B1 43 – Fracture of the distal femur B – Partial articular fracture (part of the joint surface is involved, but a portion of the articular surface remains connected to the shaft) 1 – Sagittal fracture of the lateral condyle Anatomical Location: The fracture is located in the distal region of the femur, involving the lateral condyle and extending into the knee joint surface. Fracture Pattern: This is a partial articular fracture in which the fracture line runs in a sagittal plane through the lateral femoral condyle. One fragment includes part of the articular surface of the knee joint, while the remaining portion of the distal femur stays connected to the femoral shaft. The fracture usually results in separation of the lateral condyle as a single fragment, with the rest of the distal femur remaining intact. Using 3D segmentation of the bone fragments, fixator components, and fracture gap, we created a detailed finite element model to assess healing parameters. Based on the analysis of: • Fracture gap movement (mm) • Percentage of voxels in the Claes Healing Window • Fixation safety factor — we determined that the optimal weight-bearing range for this patient is 30%–50% of body weight. This range provides the best balance between stimulation for healing and structural safety, helping avoid complications such as delayed union or fixation failure.