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| Safety ablation of facet joint in percutaneous posterior endoscopic cervical discectomy |
| ZHENG Zhenyang1, SHI Qi2* |
1 Department ofOrthopedic Surgery,Tianjin Fourth Central Hospital, Tianjin 300143, P.R.China;
2 Department of General Surgery, Tianjin Fourth Central Hospital |
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Abstract Objective To study the safety removal range of facet jointsin percutaneous posterior endoscopic cervical discectomy by applied anatomy method, and to provide theoretical basis for clinical surgery. Methods Five adult cadaver specimens were selectedto observe the side block height(a) and width(b) and to observe the inside edge of the intersection (O point) after facet joint space and the horizontal distance after resection facet nerve root only point (c), and nerve root trailing edge of the vertical distance (d), the lower edge of the inner upper pedicle (G point) and the upper edge of the inner lower pedicle (H point) connection horizontal distance (e), and the horizontal distance between the inner side wall of the vertebral artery (f) and removal of the rear facet revealing nerve root length (g). The data obtained were analyzed statistically. Results a was (10.06±0.89~11.39±0.97)mm, b was (10.30 ± 0.89~12.29 ± 0.47)mm, c was (3.99±0.60~5.12±0.44)mm, d was(3.79±0.44~4.57±0.44)mm, e was (1.69±0.87~4.83±0.96)mm, f was (3.88±0.90~6.40±0.79)mm, and g was (8.44±0.87~12.34±0.88)mm. Conclusion In PPECD, the safe and effective range of excision of the facet joint from the O point: the outward range of C3~4 should not exceed 38% of the corresponding facet joint, and should not exceed 45% in C5~7. This range can effectively expose the lesion location and reduce tissue damage.
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Received: 03 September 2019
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