Dr Petre has a new paper that has just been published in “Knee Surgery, Sports Traumatology, Arthroscopy”.  The title of the paper is

T2 values of articular cartilage in clinically relevant subregions of the asymptomatic knee

The paper discusses the ability of MRI to map the cartilage in the normal knee.

http://www.ncbi.nlm.nih.gov/pubmed/24271329