title: Are External Cervical Orthoses Necessary after Anterior Cervical Discectomy and Fusion: A Review of the Literature.
abstract: BACKGROUND
  The use of external cervical orthosis (ECO) after anterior cervical discectomy and fusion (ACDF) varies from physician to physician due to an absence of clear guidelines. Our purpose is to evaluate and present evidence answering the question, "Does ECO after ACDF improve fusion rates?" through a literature review of current evidence for and against ECO after ACDF.
  
  
  METHODS
  A PubMed database search was conducted using specific ECO and ACDF related keywords. Our search yielded a total of 1,267 abstracts and seven relevant articles. In summary, one study provided low quality of evidence results supporting the conclusion that external bracing is not associated with improved fusion rates after ACDF.  The remaining six studies provide very low quality of evidence results; two studies concluded that external bracing after cervical procedures is not associated with improved fusion rates, one study concluded that external bracing after cervical procedures is associated with improved fusion rates, and the remaining three studies lacked sufficient evidence to draw an association between external bracing after ACDF and improved fusion rates.
  
  
  CONCLUSIONS
  We recommend against the routine use of ECO after ACDF due to a lack of improved fusion rates associated with external bracing after surgery.
authors.affiliation: Department of Neurosurgery, Loma Linda University Medical Center.
authors.forename: Richard
authors.initials: R
authors.lastname: Camara
authors.affiliation: Department of Neurosurgery, Loma Linda University Medical Center.
authors.forename: Olaide O
authors.initials: OO
authors.lastname: Ajayi
authors.affiliation: Fontana Medical Center, Kaiser Permanente Southern California.
authors.forename: Farbod
authors.initials: F
authors.lastname: Asgarzadie
keywords: anterior cervical discectomy and fusion; cervical brace; cervical collar; external cervical orthoses; neurosurgery; post-operative collar; spine surgery