Maintenance of interbody space in one- and two-level anterior cervical interbody fusion: Comparison of the effectiveness of autograft, allograft, and cage

Feng Chen Kao, Chi Chien Niu*, Lih Huei Chen, Po Liang Lai, Wen Jer Chen

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

67 Scopus citations

Abstract

The use of allografts, autologous iliac crest grafts, and cages for anterior cervical fusion is well documented, however there is no comparison regarding the effectiveness of maintaining the interbody space with the three approaches. We retrospectively measured the rate and amount of interspace collapse, segmental sagittal angulations, clinical results, and radiographic fusion success rates to determine which is the best fusion material. We assessed 73 patients who had one- and two-level cervical discectomies and interbody fusions without instrumentation. The three groups had similar clinical results and fusion rates. However, in the autograft group union occurred in 4 months. In the allograft group, union did not occur until 5.54 months. Moreover, the loss of cervical lordosis (2.75°) was less in the cage group than in the allograft group (9.23°). Additionally, the anterior interspace collapse (1.73 mm) in the cage group was less than the collapse recorded in the autograft group (2.82 mm) and in the allograft group (4 mm). An interspace collapse of 3 mm or greater was observed in 56.1% of the patients in the allograft group, compared with only 19% of the patients in the cage group. We showed that the cage is superior to the allograft and autograft in maintaining cervical interspace height and cervical lordosis after one-level and two-level anterior cervical decompression procedures. Level of Evidence: Therapeutic study, Level III-2 (retrospective cohort study).

Original languageEnglish
Pages (from-to)108-116
Number of pages9
JournalClinical Orthopaedics and Related Research
Volume430
DOIs
StatePublished - 01 2005
Externally publishedYes

Fingerprint

Dive into the research topics of 'Maintenance of interbody space in one- and two-level anterior cervical interbody fusion: Comparison of the effectiveness of autograft, allograft, and cage'. Together they form a unique fingerprint.

Cite this