Knee Stability Simulator

1. Patient + Setup

All identifiers are required before score computation.

Patient Name Age (years) Gender Side Height (cm) Weight (kg) Primary Presentation Duration Clinical Emphasis

BMI (auto): --

2. Red Flags

Red flags do not change score but will show warning banners.

Major trauma + cannot weight bear Hot swollen joint + fever Calf swelling/redness (DVT concern) True locked knee (cannot extend)

3. Structural Module

Use standard grading. Tooltips are kept brief for speed.

Lachman Pivot shift Posterior drawer Varus stress (LCL) Valgus stress (MCL) McMurray or Thessaly Locking/catching episodes Patellar apprehension

4. Dynamic Control Module

Step-down/single-leg squat valgus Trunk/hip control Single-leg balance Quad activation inhibition Quad strength Hip abd/ER strength

5. Load Tolerance Module

Pain with stairs/squat (0-10)

0

Pain at rest (0-10)

0

Effusion ROM loss Morning stiffness

6. Neuro + Systemic Module

Numbness/tingling Neuro tension (SLR/Femoral) Myotome weakness flag

BMI Band (auto from setup)

--

Diabetes Diabetes control Inflammatory arthritis/gout Smoking

7. Results

Report-ready screen with identifiers, demographics, clinical visuals, and summary metrics.

Patient Identifiers and Demographics

Clinical Profile (Subscores)

Radar shape shows the stability fingerprint across five domains.

3D Knee Instability Viewer

Illustrative motion from current profile. Non-diagnostic visual aid.

How to read this motion

Larger front-back separation between femur and tibia/fibula indicates greater AP instability signal. Larger side-to-side angulation indicates greater varus/valgus instability signal. Faster oscillation indicates higher overall severity. Motion is intentionally amplified for visual clarity and is non-diagnostic.

Stability Index

--

Subscores

Active Weights

Top Drivers (Top 5)

Therapist notes

Disclaimer: This is an overview tool for clinical interpretation and communication. It is not a diagnosis.

8. Simulation

Simulation is illustrative and does not overwrite the current saved assessment.

Patient Identifiers and Demographics

Quad strength Hip strength Balance Motor control Pain (0-10)

0

Current vs Simulated Profile Overlay

Radar overlap highlights where the simulation alters stability.

3D Motion: Current vs Simulated

Two synchronized viewers for easier comparison.

Current (Computed)

Simulated

How to read this comparison

Compare excursion size between the two cards. Reduced front-back translation and reduced side angulation in the simulated card indicate lower modeled instability. Motion is amplified for visual interpretation and remains non-diagnostic.

Current Index

--

Simulated Index

--

Delta

--

Subscore delta

Top Changed Drivers (Top 3)