  Cartilage degeneration in joints causing pain and various types of knee
problems is a serious problem-affecting people in all ages. Degenerated
articular cartilage is also known as a central hallmark of osteoarthritis,
which is a complex musculoskeletal disorder involving numerous contributory
genetic, constitutional and biomechanical factors. As a part of the cartilage
degeneration, the volume occupied by the collagen fibers becomes reduced and
the cell (chondrocyte) volume increased. Since high frequency ultrasound has
the capability of resolving individual chondrocytes, ultrasound has been
suggested as a promising method for determining the cartilage status. In the
current work, the main objective has been to compare images taken in vitro with
different transducer types, in order to determine their suitability for
cartilage imaging.
