Epidemiology of traumatic spinal fractures: experience from medical university–affiliated hospitals in Chongqing, China, 2001–2010

Clinical article

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Object

The main objective of this study was to analyze the epidemiological data obtained from patients with traumatic spinal fracture at 2 university-affiliated hospitals in Chongqing, China.

Methods

The authors retrospectively reviewed the hospital records of all patients who suffered traumatic spinal fracture and were treated at Xinqiao Hospital and Southwest Hospital (both affiliated with The Third Military Medical University) between January 2001 and December 2010. The demographic characteristics, injury characteristics, and clinical outcomes of patients over this 10-year period were compared.

Results

A total of 3142 patients (mean age 45.7 years, range 1–92 years) with traumatic spinal fractures were identified; 65.5% of the patients were male. The peak frequency of these injuries occurred in the 31- to 40-year-old age group. Accidental falls and traffic accidents were the most common causes of spinal fractures (58.9% and 20.9%, respectively). Traffic accidents tended to occur in younger patients, whereas accidental falls tended to occur in older patients. The most common area of fracture was the thoracolumbar spine (54.9%). Cervical spinal fractures were significantly more common in patients injured in traffic accidents, while lumbar spinal fractures were more common in accidental fall patients. Using the American Spinal Injury Association (ASIA) classification, 479 (15.3%) patients were classified as having ASIA A injuries; 913 (29.1%), ASIA B, ASIA C, or ASIA D; and 1750 (55.7%), ASIA E. ASIA A injuries were more common in patients who suffered thoracic spinal fractures (15.09%) than in those with fractures in other areas of the spine. A total of 954 (30.4%) patients had associated nonspinal injuries. Of these patients, 389 (40.78%) suffered a thoracic injury, and 191 (20.02%) sustained a head and neck injury. The length of hospitalization differed significantly between the accidental falls from high heights and falls from low heights, as did the mean cost of hospitalization (p < 0.05), but no significant difference was found between accidental falls from high heights and traffic accidents (p > 0.05). The length of hospitalization differed significantly among the 3 groups according to the ASIA classification, as did the mean cost of hospitalization (p < 0.05). Of patients with incomplete lesions, 39.3% improved 1 or more grades in ASIA classification during hospitalization.

Conclusions

Accidental falls emerged as the leading cause of traumatic spinal fracture in this study, and the numbers of fall-induced and sports-related injuries increased steadily with age. These results indicate that there should be increased concern for the consequences of fall- and sports-related injuries among the elderly.

Abbreviations used in this paper:ASIA = American Spinal Injury Association; ICD-9 = International Classification of Diseases, 9th revision; ISS = Injury Severity Score.

Article Information

Address correspondence to: Yue Zhou, Ph.D., Xinqiao Street, Department of Orthopaedics, Xinqiao Hospital, The Third Military Medical University, Chongqing 400037, People's Republic of China. email: zhouyue_xinqiao@163.com.

Please include this information when citing this paper: published online September 14, 2012; DOI: 10.3171/2012.8.SPINE111003.

© AANS, except where prohibited by US copyright law.

Headings

Figures

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    Age and gender distribution. Upper: The frequencies of spinal fractures by age in both sexes. Lower: The frequencies of spinal fractures by year of admission in both sexes.

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    The distributions of spinal fractures according to trauma mechanism. Upper: The number of patients with spinal fractures by age group and mechanism of trauma. Lower: The frequency of spinal fractures by year of admission and mechanism of trauma.

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    Age distributions among patients in the 3 major subgroups of traffic accidents.

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    Distribution of spinal fractures by vertebral level.

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    Frequencies of spinal fracture by spinal region and major trauma mechanism.

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    Mean age trends for patients with spinal fractures with (red line with squares) and without (blue line with diamonds) spinal cord injuries from 2001 to 2010.

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    Relationship between medical insurance, ASIA classification, and termination of treatment. Upper: The frequencies of medical insurance coverage and terminating treatment by year of admission. Lower: The frequencies of medical insurance coverage and terminating treatment by ASIA classification.

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    Frequencies of various forms of clinical treatment by year of patient admission.

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