From Movement to Mechanics.
Explore the eight distinct computational stages that transform uncalibrated raw movement into actionable orthopedic biomechanics.
01. Passive Continuous Capture
Wearable inertial units collect linear acceleration and angular rates during daily ambulation. Periodic smartphone camera video provides high-fidelity coronal and sagittal posture verification.
02. Signal Normalization & Drift Correction
Disparate sensor sampling rates (ranging from 30 Hz video up to 200 Hz IMU streams) are resampled and temporally aligned using zero-lag spline interpolation and continuous orientation estimation.
03. 3D Skeletal Topology Reconstruction
Sensor orientations are registered against a scalable 14-segment rigid body human model. Anatomical joint centers (hip, knee, ankle, shoulder, elbow, wrist) are resolved in 3D global coordinate space.
04. Musculoskeletal Scaling & Kinematics
Segment lengths, inertial tensors, and centers of mass are anthropometrically scaled according to patient height, weight, and surgical specifications.
05. Inverse Dynamic Load Calculation
Solving the equations of motion derives intersegmental forces and net joint moments. Contact force vectors are computed at articular cartilage and prosthetic interfaces.
06. Baseline & Cohort Comparison
Current movement metrics are continually compared against two reference anchors: the patient’s own pre-operative/early-discharge baseline, and normative recovery trajectories for that surgical procedure.
07. Compensatory Deviation Detection
When single-leg stance, walking cadence, or joint flexion profiles diverge from expected statistical thresholds, a clinical review flag is automatically synthesized with supporting kinematic evidence.
08. Clinician Interpretation & Follow-Up
Orthopedic surgeons, physical therapists, and care managers review objective motion evidence within their clinical workflow. The human clinician retains complete decision authority.