Wrists

The wrist is a diarthrodial anatomical joint consisting of 8 small bones (scaphoid, capitate, hamate, lunate, trapezium, trapezoid, triquetrum, pisiform) and 7 long bones (radius, ulna, and 5 metacarpals). When subject to injury and disease the wrist undergoes changes in kinematics, inter-bone joint space areas, cartilage thickness, length of ligament paths, etc. Developing computational tools for the analysis of anatomical joint characteristics is important in understanding the cause of injury, tracing the progress of disease, and taking preventative measures.

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  X-ray of the wrist with bone names
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  Ligaments: posterior view of left wrist

Non-Technical Description of Overall Pipeline

1. Data
2. Bone Surface Extraction
3. Registration of Bones Across Positions
4. Retrieval of Kinematics
5. Inter-bone Joint Space Area Calculations
6. Ligament Path Calculations
7. Cartilage Maps (location & thickness)
8. Cartilage Surface Deformations
9. Joint Simulation

Tools

1. registration
2. joint space area calculations
3. cartilage building
4. "wiggling" bones around
5. ligament length measures

Technical Details on Wrist Pipeline and its relationship to the $G software framework