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Vet Comp Orthop Traumatol 2018; 31(01): 001-009
DOI: 10.3415/VCOT-17-03-0042
Original Research
Schattauer GmbH Stuttgart

Qualitative and Quantitative Radiological Measures of Fracture Healing

John R. Field
,
Greg R. Ruthenbeck
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Publication History

16 March 2017

07 October 2017

Publication Date:
11 January 2018 (online)

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Abstract

The formulation of appropriate postoperative strategies, following fracture repair, currently involves an understanding of radiological and clinical outcome measures. This study has evaluated several modalities used to assess the progression of bone healing in a sheep tibial segmental defect model. Measures of defect optical density and volumetric data including bone density (BD), bone volume (BV) and bone mass (BM) were compared with qualitative data involving visual appraisal of radiographs [% bridging callus and modified radiographic union score tibia (mRUST)] and a clinical outcome measure (locomotory function). Percent bridging callus and mRUST measures displayed strong correlation (r = 0.999), while locomotory function was weakly correlated with bridging callus (r = 0.029) and mRUST (r = 0.046). There was moderate to strong correlation between the qualitative and quantitative data. Bone density, BV and BM showed strong correlations within this dataset (BD–BV, r = 0.814; BD–BM, r = 0.818; BV–BM, r = 1.000). Likewise, optical density measures were strongly correlated with BD (r = 0.824), BV (r = 0.957) and BM (r = 0.959). The utilization of both qualitative and quantitative data, in assessment of the progression of fracture healing, has provided valuable insight. Measures of optical density have been shown to make a substantial contribution to this assessment and which should be considered for use in studies evaluating fracture healing.

Keywords

advanced imaging techniques - bone defect healing - animal models of human disease - comparative research - fracture repair
 

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