The Secondary Contiguous or Non-contiguous Subchondral Bone Impactions in Subaxial Cervical Spinal Injury: Incidence and Associated Primary Injury Patterns.
10.13104/jksmrm.2014.18.3.232
- Author:
Jun Gu HAN
1
;
Yeo Ju KIM
;
Seung Hwan YOON
;
Kyu Jung CHO
;
Eugene KIM
;
Young Hye KANG
;
Ha Young LEE
;
Soon Gu CHO
;
Mi Young KIM
Author Information
1. Department of Radiology, Inha University Hospital, Incheon, Korea. kimyeoju@hanmail.net
- Publication Type:Original Article
- Keywords:
Subaxial cervical spine;
Subchondral bone impaction;
Magnetic resonance imaging (MRI);
Injury pattern
- MeSH:
Humans;
Incidence*;
Ligaments;
Magnetic Resonance Imaging;
Medical Records;
Retrospective Studies;
Spinal Cord Injuries;
Spinal Injuries*;
Spine
- From:Journal of the Korean Society of Magnetic Resonance in Medicine
2014;18(3):232-243
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: To evaluate the incidence of secondary contiguous or non-contiguous subchondral bone impactions (SBI) in subaxial cervical spinal injury and associated primary injury patterns. MATERIALS AND METHODS: A retrospective review of computed tomography, magnetic resonance imaging, and medical records was carried out for 47 patients who had sustained a subaxial cervical spinal injury. Presence, number, level, and sites of secondary contiguous or non-contiguous SBI were recorded. To evaluate primary injury patterns, the level and number of primary injury sites of subaxial cervical spine injury, injury morphology, anterior/posterior discoligamentous complex (ADC/PDC) injury, posterior ligamentous complex (PLC) injury, spinal cord injury, and mechanism of injury (MOI) were analyzed. Differences in primary injury pattern of subaxial cervical spine injury and MOI between patients with and without SBI, and between contiguous or non-contiguous SBI were analyzed using the Mann-Whitney U test, Pearson's chi square test and Fisher's exact test. RESULTS: Eighteen patients (18/47, 38.29%) had developed contiguous (n=9) or non-contiguous (n=9) SBI, most commonly involving T3 (15/47, 31.91%) and 3 levels (6/18, 33.33%). All SBIs had developed near the anterosuperior region of the body and the superior endplate and were the result of a high-impact MOI. SBIs were statistically significant in association with injury morphology and PLC injury (P=0.001, P=0.009, respectively) at the primary injury site. Non-contiguous SBI was more frequently accompanied by upper cervical spinal injuries in association with PDC injuries, as opposed to contiguous SBI, with statistical significance (P=0.009), while no other statistically significant differences were found. CONCLUSION: Secondary SBIs are common and probably associated with subaxial cervical spinal injuries with high energy compressive flexion forces.
