title: Determining the critical size of a rabbit rib segmental bone defect model.
abstract: In order to establish and standardize the rabbit rib segmental bone defect model, it is of vital importance to determine rabbit rib critical size defect (CSD). According to the general time needed for spontaneous long-bone regeneration, three-month observation period was set to determine the CSD. The rabbit rib segmental bone defects with different sizes from 1 to 5 cm with or without periosteum were performed in the eighth rib of 4-month-old male New Zealand rabbits and underwent X-ray examinations at the 4th, 8th and 12th weeks postoperatively. The gross and histological examinations at postoperative week 12 were evaluated, which showed that the critical sizes in the rabbit rib models with and without periosteum were 5 and 2 cm, respectively. This study provides prerequisite data for establishing rabbit rib CSD model and evaluating bone materials using this model.
authors.affiliation: Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng 252000, P. R. China;; Tsinghua University, Beijing 100084, P. R. China.
authors.forename: Fengzhen
authors.initials: F
authors.lastname: Liu
authors.affiliation: Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng 252000, P. R. China.
authors.forename: Kun
authors.initials: K
authors.lastname: Chen
authors.affiliation: Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng 252000, P. R. China.
authors.forename: Lei
authors.initials: L
authors.lastname: Hou
authors.affiliation: Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng 252000, P. R. China.
authors.forename: Keyi
authors.initials: K
authors.lastname: Li
authors.affiliation: Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng 252000, P. R. China.
authors.forename: Dawei
authors.initials: D
authors.lastname: Wang
authors.affiliation: Liaocheng People's Hospital, Medical College of Liaocheng University, Liaocheng 252000, P. R. China.
authors.forename: Bin
authors.initials: B
authors.lastname: Zhang
authors.affiliation: Tsinghua University, Beijing 100084, P. R. China.
authors.forename: Xiumei
authors.initials: X
authors.lastname: Wang
keywords: animal test; bone; critical size defect; periosteum; rib defect