Journal Title: بهار 93
Article title:

Article PDF File:
Page From: 50 To: 55      
Article abstract:
Introduction & Objective: Several positions are proposed for the radiography of lateral spine. Although clavicle position is currently taken as the standard method to obtain lateral spine view in most spinal surgery departments, but some centers still apply the traditional 90° position. The aim of our study is to compare the effects of these two common positions on the determination of kyphosis or lordosis degrees, the vertebral landmarks, and the global sagittal balance. Materials & Methods: By a diagnostic evaluation study, 50 patients with different indications for total spinal lateral view were studied by taking this view in two positions: Clavicle position and 90° (Straight out) position. The investigated items were: thoracic kyphosis and lumbar lordosis degrees, global sagittal balance, the clarity of T2 and T12 vertebrae and the L5-S1 disc. The radiographs were interpreted by two fellows of the spine surgery. Statistical analysis was done by t-test and Wilcoxon test. Results: The clarity of T2 vertebrae in the position 90° was significantly better than the case of Clavicle position (score 23 vs. 16). T12 vertebrae Image resolution was better in Clavicle position (score 8.5 vs. 11). The difference of L5-S1 disc clarity in the two positions was not significant (score 10.1 vs. 10.8). The averages of kyphosis (35° vs. 38°) and lordosis (both 24°) were not appreciably different. Our note worthy finding was the positive increase of the sagittal balance in the 90° position. Conclusions: In order to determine sagittal balance in the lateral X-Ray of spine, the Clavicle position is more accurate than the 90° position. While the Clavicle position provides adequate visualization of most vertebral landmarks, its ability in the regional curve measurements is not significantly different from that of the 90° position.
Article KeyWords:
Spine, Radiography, Sagittal
Article Authors:

	دکتر ابراهیم عامری	First Author
	دکتر حسن قندهاری	Other Author
	دکتر نوید نبی‌زاده	Other Author	nnabizadeh@yahoo.com
	دکتر حمید حصاری‌کیا	Other Author