Effects of a new anatomical adaptive titanium mesh cage on supportive load at the cervical endplate: a morphological and biomechanical study.
10.12122/j.issn.1673-4254.2019.04.05
- Author:
Teng LU
1
;
Zhongyang GAO
1
;
Xijing HE
1
;
Jialiang LI
1
;
Ning LIU
2
;
Hui LIANG
1
;
Yibin WANG
1
;
Zhijing WEN
1
;
Ting ZHANG
1
;
Dong WANG
1
;
Haopeng LI
1
Author Information
1. Department of Orthopedics, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China.
2. Department of Spine Surgery, Hanzhong Central Hospital, Hanzhong 723000, China.
- Publication Type:Journal Article
- Keywords:
cervical fusion, endplate;
interbody angle;
interbody height;
subsidence;
supportive load;
titanium mesh cage
- MeSH:
Biomechanical Phenomena;
Cervical Vertebrae;
Humans;
Prostheses and Implants;
Spinal Fusion;
Surgical Mesh;
Titanium;
Treatment Outcome
- From:
Journal of Southern Medical University
2019;39(4):409-414
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To assess the geometrical matching of a new anatomical adaptive titanium mesh cage (AA-TMC) with the endplate and its effect on cervical segmental alignment reconstruction in single- and two-level anterior cervical corpectomy and fusion (ACCF) and compare the compressive load at the endplate between the AA-TMC and the conventional titanium mesh cage (TMC).
METHODS:Twelve cervical cadaveric specimens were used to perform single- and two-level ACCF. The interbody angle (IBA), interbody height (IBH) and the interval between the AA-TMC and the endplate were evaluated by comparison of the pre- and postoperative X-ray images. The maximum load at the endplate was compared between the AA-TMC and TMC based on American Society for Testing and Materials (ASTM) F2267 standard.
RESULTS:No significant differences were found between the preoperative and postoperative IBA and IBH in either single-level ACCF (11.62°±2.67° 12.13°±0.69° and 23.90±2.18 mm 24.23±1.13 mm, respectively; > 0.05) or two-level ACCF (15.63°±5.06° 16.16°±1.05°and 42.93±3.51 mm 43.04±1.70 mm, respectively; > 0.05). The mean interval between the AA-TMC and the endplate was 0.37 ± 0.3 mm. Compared to the conventional TMC, the use of AA-TMC significantly increased the maximum load at the endplate in both single-level ACCF (719.7±5.5 N 875.8±5.2 N, < 0.05) and two-level ACCF (634.3±5.9 N 873±6.1 N, < 0.05).
CONCLUSIONS:The use of AA-TMC in single-level and two-level ACCF can significantly increase the maximum load at the endplate to lower the possibility of implant subsidence and allows effective reconstruction of the cervical alignment.
