Abstract
Objectives
We analyzed the radiological and clinical results to verify the efficacy of anterior interbody fusion with using cages gradually increases in the treatment of cervical radiculopathy.
Summary of the Literature Review
Anterior cervical decompression and fusion is well accepted treatments for cervical radiculopathy. Performing anterior interbody fusion using cages has recently gradually increased to minimize the extent of surgery. While there are numerous reports on the primary stabilizing effects of the cervical cages, little is known about the subsidence behavior of such cages in vivo.
Materials and Methods
We retrospectively analyzed 38 patients with cervical disc herniation who underwent anterior decompression and interbody fusion with autoiliac bone graft and plate fixation (Group I, 21 patients) or who underwent with standalone cage (Group II, 17 patients). We statistically analyzed the changes of the cervical lordosis, the segmental lordosis, the vertebral body height, the fusion rate on the plain x-ray and the clinical results with using a pain visual analogue scale.
Results
All the cases were fused by 11.2±2.7 weeks after operation. The changes of the cervical lordosis and segmental lordosis show no statistically significant difference between the two groups (p=0.07, 0.66). The anterior and posterior vertebral heights of the fused segments of group II were more decreased than those of group I, but there was no statistically difference between the two groups (p=0.06, 0.30). The clinical results were not statistically difference between the two groups (p=0.64, 0.45).
Conclusions
Implantation of autoiliac cancellous bone impacted standalone cages or on a tricortical iliac crest autograft after anterior decompression was safe and reliable options for the treatment of cervical disc herniation that causes single level radiculopathy. Both procedures produced equally satisfying clinical and radiological results, leading to a high fusion rate and they maintained the intervertebral height.
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Table 1.
Table 2.
Plate group (n=21) | Cage group (n=17) | P-value | ||
---|---|---|---|---|
Lordotic angle (®) | Preoperation | 13.7±7.4 | 12.5±8.0 | 0.658 |
Postoperation | 8.5±5.3 | 11.9±6.4 | 0.090 | |
Last Follow-up | 12.6±4.7 | 12.7±6.4 | 0.935 | |
Δ(Last f/u-Post op) | 4.1±5.4 | 0.9±4.7 | 0.073 | |
Disc angle (®) | Preoperation | 3.2±2.7 | 4.1±3.3 | 0.344 |
Postoperation | 5.8±4.3 | 4.2±3.1 | 0.256 | |
Last Follow-up | 3.6±2.9 | 2.7±3.6 | 0.384 | |
Δ(Last f/u-Post op) | -2.1±3.8 | -1.6±3.8 | 0.658 | |
Anterior body height (ABH∗, %) | Preoperation | 259.6±61.2 | 234.5±47.8 | 0.221 |
Postoperation | 284.9±59.9 | 256.8±48.9 | 0.148 | |
Last Follow-up | 277.2±55.9 | 236.9±36.6 | 0.022∗ | |
Δ(Last f/u-Post op)® | -2.3±8.0 | -7.1±6.4 | 0.064 | |
Posterior body height (PBH∗, %) | Preoperation | 260.9±62.5 | 231.6±48.4 | 0.143 |
Postoperation | 275.0±57.6 | 247.4±44.3 | 0.134 | |
Last Follow-up | 270.4±56.7 | 235.5±37.5 | 0.048∗ | |
Δ(Last f/u-Post op)® | -1.3±9.2 | -4.4±7.0 | 0.297 |