Osteoporotic vertebral fractures: predictive factors for conservative treatment failure. A systematic review
Abstract
Purpose
To analyze clinical, radiographic and magnetic resonance findings that might predict risk of complications and conservative treatment failure of osteoporotic vertebral fractures.
Methods
The authors conducted a systematic review of observational studies, collecting data on osteoporotic vertebral fracture and complications like vertebral collapse, kyphosis, pseudoarthrosis, and neurologic deficit. MeSH items such as ‘spinal fracture/radiology,’ ‘spinal fracture/complications,’ ‘spinal fracture/diagnosis’ were used. PRISMA statement criteria were applied, and the risk of bias was classified as low, medium, high, following the Newcastle–Ottawa Quality Assessment Scale (NOS).
Results
Eleven cohort studies, either retrospective or prospective, met the eligibility criteria and were included in the review. Major risk factors that were statistically predictive of the following complications were as follows; (1) vertebral collapse: presence of intravertebral cleft, MR T1-WI ‘total type fractures’ and T2-WI ‘hypointense-wide-type’. (2) Pseudoarthrosis (nonunion): middle-column damage, thoracolumbar vertebrae involvement, MR T2-WI confined high-intensity pattern and diffuse low intensity pattern. (3) Kyphotic deformity: thoracolumbar fracture and superior endplate fracture. (4) Neurologic impairment: a retropulsed bony fragment occupying more than 42% of the sagittal diameter of the spinal canal and a change of more than 15° in vertebral wedge angle on lateral dynamic radiography.
Conclusions
Shape and level of the fracture were risk factors associated with the progression of collapse, pseudoarthrosis, kyphotic deformity and neurologic impairment. MRI findings were often related to the failure of conservative treatment. If prognosis can be predicted at the early fracture stage, more aggressive treatment options, rather than conservative ones, might be considered.
Publisher URL: https://link.springer.com/article/10.1007/s00586-017-5340-z
DOI: 10.1007/s00586-017-5340-z
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