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Transport disc distraction osteogenesis for the reconstruction of a calvarial defect

 Jong Won Hong  ;  Seung Yong Song  ;  Dae Gon Woo  ;  Han Sung Kim  ;  Hyun Joon Hong  ;  Joong Ho Choi  ;  Beyoung Yun Park  ;  Yong Oock Kim 
 JOURNAL OF CRANIOFACIAL SURGERY, Vol.20(3) : 790-796, 2009 
Journal Title
Issue Date
Animals ; Bone Density/physiology ; Bone Diseases/pathology ; Bone Diseases/surgery* ; Bone Regeneration/physiology ; Collagen/ultrastructure ; Dogs ; External Fixators ; Female ; Haversian System/pathology ; Osteocytes/pathology ; Osteogenesis/physiology ; Osteogenesis, Distraction/instrumentation ; Osteogenesis, Distraction/methods* ; Parietal Bone/pathology ; Parietal Bone/surgery* ; Reconstructive Surgical Procedures/instrumentation ; Reconstructive Surgical Procedures/methods* ; Time Factors ; Tomography, X-Ray Computed
Transport disc ; distraction osteogenesis ; calvarial bone
PURPOSE: Reconstruction of bone defects is possible through distraction osteogenesis using small bone transport discs. The aim of this study was to evaluate the usability of transport disc distraction osteogenesis (TDDO) in the reconstruction of skull defects in an animal experiment. METHODS: Eleven mongrel female dogs were used. Craniectomy (33 x 15 mm) was performed on both sides of the parietal bone symmetrically. On the experimental site, the 7 x 15-mm transport bone disc was used for TDDO. The control site was left in the defect state. An external distraction device was used. The latency period was 5 days, the rate of distraction was 1 mm/d, and distraction was done for 26 days. After a 6-month consolidation period, a computed tomographic scan was performed. The area of regenerated bone was measured from the computed tomographic scan. The hardness was checked on the regenerated bone and the normal bone. A histologic examination of the regenerated bone was done. RESULT: Eight cases were included in the evaluation, and 3 cases were excluded because they showed early escape of the distraction device. The mean (SD) area of the regenerated bone was 57.1% (26.3) in the experimental site and 41.8% (21.3) in the control site, which was not a statistically significant difference (P > 0.05). The mean (SD) hardness was 0.50 (0.17) MPa in the experiment site and 0.55 (0.29) MPa in the normal calvarial bone; the difference was not statistically significant (P > 0.05). On histologic examination, membranous ossification was found in the regenerated bone in the experimental site. CONCLUSIONS: Transport disc distraction osteogenesis can induce new bone formation with hardness comparable to that of a normal bone. However, the amount of regenerated bone is not sufficient to allow TDDO to be substituted for conventional autogenous bone grafts
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1. College of Medicine (의과대학) > Dept. of Plastic and Reconstructive Surgery (성형외과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Yong Oock(김용욱) ORCID logo https://orcid.org/0000-0002-3756-4809
Park, Beyoung Yun(박병윤)
Song, Seung Yong(송승용) ORCID logo https://orcid.org/0000-0002-3145-7463
Hong, Jong Won(홍종원) ORCID logo https://orcid.org/0000-0002-7762-0940
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