PEEK Cages versus PMMA Spacers in Anterior Cervical Discectomy: Comparison of Fusion, Subsidence, Sagittal Alignment, and Clinical Outcome with a Minimum 1-Year Follow-Up

<table>Measurement techniques for subsidence and sagittal alignments. The interbody height ratio of C5/6 is the total segmental height (vertical dotted line with arrowheads) divided by the anterior-posterior diameter of C5 (horizontal dashed line with arrowheads). <i>α</i> is the angle indicating the cervical sagittal alignment (CSA); <i>β</i> is the angle indicating the segmental sagittal alignment (SSA).</table>

The Scientific World Journal

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Figure 3: PEEK Cages versus PMMA Spacers in Anterior Cervical Discectomy: Comparison of Fusion, Subsidence, Sagittal Alignment, and Clinical Outcome with a Minimum 1-Year Follow-Up 

Figure 3 | PEEK Cages versus PMMA Spacers in Anterior Cervical Discectomy: Comparison of Fusion, Subsidence, Sagittal Alignment, and Clinical Outcome with a Minimum 1-Year Follow-Up 