DOI: 10.36347/sjams.2013.v01i05.0052

Pages: 560-567

The knee joint is the largest synovial joint in the body and most vulnerable to osteoarthritis, ligament & menisci damage. The joint was constructed by nature for the four, footed position (for tetrapod) and not for one in which end of femur bears directly in a vertical manner upon the end of tibia due to the assumption of the upright erect posture of man during evolution. Though not a very will fitting joint and in spite of being under load during locomotion still it functions perfectly. Understanding a bio-mechanical system as complex as the human knee may be made easier by studying the analogues structure in the limbs of other animals. In the present study an attempt has been made to study in detail the structural similarity and variations and correlate the possible functional significance of this morphological variation of knee joint in the animal from main line of ascend of phylogenetics development class amphibian, order anura (frog) to class mamalia,order primates (human being).