摘要: Publisher Summary Spontaneous heterotopic ossification may occur in almost any connective tissues of the body, but with few definite etiological factors emerging. This chapter describes and urinary tract, injection extracts skeletal tissues, injections irritants other traumatic experiments, implants devitalized tissues. The association both experimentally spontaneously induced bone proliferating transitional epithelium is well established several species. Bone cartilage have also been many different ways, general principles are not easily adduced from these results; however, presence inductors for species has conclusively demonstrated. indicates that until, inducing agents unequivocally a number species, it required to defer judgment on claims induction plays an important role repair transplantation.