Lumbar transverse process fractures (LTPFs) are often with concomitant non-spinal–associated injuries (NSAIs). The purpose of this study was to analyze the correlation between the NSAIs and the LTPFs of different segments, amount, and concomitant thoracolumbar/lumbar vertebral fractures.
A total of 1,181 patients with LTPFs or thoracolumbar/lumbar vertebral fractures were chosen between September 2006 and June 2010. The patients were divided into three groups: thoracolumbar/lumbar vertebral fractures without LTPFs, with associated LTPFs, and isolated LTPFs (iLTPFs). The correlation of the NSAIs of different sites and the LTPFs of different segments, amount, and concomitant thoracolumbar/lumbar vertebral fractures were analyzed between and within groups by χ2 test and logistic regression analysis.
The incidence of NSAIs with iLTPFs and aLTFP groups were significantly higher than that of vertebral fractures without LTPF group (55.73% and 64.49% vs. 21.32%, respectively, p = 0.000). However, the incidence was not significantly different between the iLTPFs and the aLTFP groups (p = 0.106). The results with NSAIs of different sites were almost the same. L5TPFs were a stronger risk factor to NSAIs (relative risk [RR] = 15.72; 95% confidence interval [CI], 4.47–55.37; p = 0.000) in the iLTPF group (RR = 21.92; 95% CI, 6.68–71.92; p = 0.000) and in the vertebral fractures with associated LTPF group (RR = 9.42; 95% CI, 1.19–74.72; p = 0.034). L5TPFs were also a very important risk factor for pelvic injuries (RR = 46.10; 95% CI, 22.40–94.88; p = 0.000); 65.1% in L5iTPFs were accompanied with Tile-C pelvic injuries, slightly higher than in L5aTPFs (46.7%). L4TPFs were a risk factor to abdominal injuries within iLTPFs (RR = 2.27; 95% CI, 1.23–4.20; p = 0.009).
The incidence of NSAIs is very high in cases with LTPFs, particularly with L5TPFs. A detailed investigation should be performed to search for NSAIs once LTPFs are identified so that appropriate treatment can be initiated.
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