Remodeling capacity of XXXX in kyphotic angulation in infancy: an observation up to maturity in three @entity1 .

@entity1 @entity73 @entity1517 @entity174
STUDY DESIGN: A retrospective case study. OBJECTIVE: To confirm the remodeling potential of the kyphotic @entity1517 in the pediatric spine. SUMMARY OF BACKGROUND DATA: Nonsurgical reduction and immobilization is the gold standard for the @entity174 in infancy. However, the reduction occasionally results in incomplete repositioning of the odontoid process. The cervical spine is subsequently immobilized until fusion in most cases in the hope of achieving remodeling with the growth of the remaining displacement and kyphotic angulation, although there are no precise data on the acceptable limit of the deformity. METHODS: Three @entity1 (age at injury = 1 year 2 months to 3 years) with odontoid process @entity174 in infancy were treated conservatively and the @entity174 were observed on plain lateral radiographs until at least the age of 20 years. For evaluation of the angulated odontoid process, we used our original measurement method of the odontoid process tilting angle (OPTA). In addition, the OPTAs were also measured in 127 Japanese adult @entity1 (57 male @entity1 and 70 female @entity1 ; average age = 43 years) without a history of @entity174 , as normal controls. RESULTS: The OPTA in the normal controls was -21.4      23.3  . The OPTAs ranged from 41   to 62   at the initial evaluation, from 12   to 30   at the time of bony union, and from -4   to -14   at the final follow-up at more than 20 years of age, which were all within one standard deviation of the mean in the normal adult controls. CONCLUSION: @entity174 with the OPTA around 30   at the time of bony union in @entity1 younger than 3 years of age could have the capacity for remodeling to the normal morphology. No surgical reduction might be needed to recommend complete apposition of the odontoid process in the absence of severe or deteriorating @entity73 .
