Surgical management of joint problems has progressed drama tically in the past few years. Clearer understanding of the patho genesis of joint disorders and recent additions to our knowledge of joint mechanics have mage formerly unimagined procedures possible. Moreover, tremendous advancement in implant tech nology offers us a wider variety of surgical procedures and a better chance of obtaining satisfactory results. At the same time, alternative bone-preserving procedures, such as osteotomy, in the weight-bearing joints are still of great significance in selected cases. In this context, it is...