Validation study of arm positions for evaluation of global spinal balance in EOS imaging.
Validation study of arm positions for evaluation of global spinal balance in EOS imaging.
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DOI：
10.1007/s00590-016-1813-8
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发表时间：
2016-10-01
期刊：
影响因子：
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通讯作者：
Saito, Tomoyuki
中科院分区：
文献类型：
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作者：
Kaneko, Kanichiro;Aota, Yoichi;Saito, Tomoyuki
背景：矢状面垂直轴（SVA）是评价脊柱矢状面平衡的重要指标。虽然“拳头在锁骨上”（FOC）的位置已被广泛用于放射学检查，它并没有详细定义肩关节屈曲。同时，在EOS成像中，“手放在脸颊上”（HOC）位置被广泛使用，但尚未得到很好的研究。材料与方法：34名志愿者在4种不同体位（放松（RLX）、肩关节屈曲90° FOC（FOC 90）、肘关节接触躯干FOC（FOCET）和HOC）下，用EOS成像测量SVA。FOC 90中为-1.4 ± 3.2cm; FOCET中为-0.5 ± 3.0cm; HOC中为-0.2 ± 2.9cm。FOC 90中相对于RLX的负偏移显著大于FOCET（-3.4 2. 2 vs -2.5 2. 4cm; p=0.0182）。HOC与FOCET相比，SVA相对于RLX的负移几乎相等，相差0.3cm（-2.2 2. 2 vs -2.5 2. 4cm; p=0.2560）。HOC和FOCET之间的平均SVA差异为0.3 cm，临床上差异较小。
BACKGROUND: The sagittal vertical axis (SVA) is important in the evaluation of spinal sagittal balance. Although the "fists-on-clavicles" (FOC) position has been widely used in radiographic examinations, it does not define shoulder flexion in detail. Meanwhile, in EOS imaging, the "hands-on-cheeks" (HOC) position is widely used but has not been well investigated. The purpose of this study was to investigate the relative usefulness of FOC and HOC in investigating SVA.MATERIALS AND METHODS: Mean SVA was measured by EOS imaging using standing lateral radiographs of 34 volunteers in four different positions: relaxed (RLX), shoulder flexion at 90° with FOC (FOC90), elbows touching the trunk with FOC (FOCET), and HOC.RESULTS: The mean SVA was 2.0±2.1cm in RLX; -1.4±3.2cm in FOC90; -0.5±3.0cm in FOCET; and -0.2±2.9cm in HOC. The negative shift from RLX was significantly greater in FOC90 than in FOCET (-3.4±2.2 vs -2.5±2.4cm; p=0.0182). The negative shift from RLX in HOC was almost equal to that in FOCET; the difference was 0.3cm (-2.2±2.2 vs -2.5±2.4cm; p=0.2560).CONCLUSION: FOC90 showed a negative SVA shift in comparison with FOCET. The difference in the mean SVA between HOC and FOCET was 0.3cm, a clinically small difference.