A bone cutting guide for osteochondral transplantation, including a cutting guide block having a distal portion and a posterior portion, said distal portion having a distal cutting guide slot disposed therethrough, said posterior portion having a posterior cutting guide slot disposed therethrough a plurality of condylar rails attached to said cutting guide block a tower cutting guide disposed superior to said cutting guide block and having at least one cutting guide track disposed at an angle of between 0 and 180 degrees in relation to the angle of said posterior cutting guide slot and fixation structure for attaching said cutting guide block and said tower cutting block to bone.