Functional Characterization of Cartilage:

Articular and meniscal cartilage are highly functional components of human joints, providing for load distribution, dampening and low joint friction. Their mechanical structure and function can be uniquely characterized by observing the strain distribution in response to cartilage loading. To overcome the inherent difficulty of measuring strain on cartilage, we employ a state-of-the-art laser-based technology (quantitative Electronic Speckle Pattern Interferometry: qESPI), capable of acquiring full-field strain in a non-contact manner.

Articular Cartilage

Using qESPI, we determined the non-linear strain distribution and strain relaxation behavior of articular cartilage from the patello-femoral joint. This research has received the 2003 Microstrain Award of the American Society of Biomechanics (go to award paper).
Funding Source: Oral & Maxillofacial Research Foundation

Meniscal Cartilage

Using qESPI, we found that the strain distribution in meniscal cross-sections differs significantly from that in homogeneous replicates. Furthermore, the functional characterization of meniscal cartilage with qESPI technology was able to quantify age-dependent degenerative changes.
Funding Source: Stryker Europe