A prototype of the MIR arthroscopy probe was tested for its geometrical properties in the metacarpophalangeal joint of a horse cadaver.
The joint shows signs of cartilage degeneration which is typical for osteoarthritis (OA). During testing the tip of the probe, which was 90° angled relative to the long shaft, could be maneuvered across almost the entire cartilage surface by using just one single portal for insertion of the instrument.

Another feature that was tested was the perpendicular position of the tip of probe onto the cartilage surface which is important for correct measurements of articular cartilage quality in future. Perpendicularity could be achieved in the majority of locations in the joint, again by using just one single instrument portal.

The overall results of this first in vitro test were very positive, so the future can be looked forward with confidence and supply of a fully working MIR arthroscopy probe can be anticipated in the near future.