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Contact Pressure Distribution Of Osteochondral Defects Of The Knee: Effects Of Non-Vertical Walls, Scott Ensminger
Contact Pressure Distribution Of Osteochondral Defects Of The Knee: Effects Of Non-Vertical Walls, Scott Ensminger
Wayne State University Theses
Purpose: To examine the relationship between well-shouldered osteochondral defects and
defects of different geometries by studying their effects on rim stress concentration and
load redistribution in the human knee.
Methods: Ten fresh-frozen cadaveric knees were mounted at 30° of flexion in a materials
testing machine. Digital electronic pressure sensors were placed in the medial and lateral
compartments of the knee. Dynamic pressure readings were recorded throughout the
loading and holding phases as each knee was loaded to 700N and held for 5 seconds.
Artificial defects were created in each knee to simulate well-shouldered defects and
beveled-defects. Loading was repeated for …