A comparison of facial nerve grading systems

Ann Plast Surg. 2013 Mar;70(3):313-6. doi: 10.1097/SAP.0b013e31826acb2c.

Abstract

Purpose: This study aimed to compare a computerized tool to standard objective clinical scales for global and zone-specific assessment of facial nerve function.

Methods: This was a retrospective review of 77 patients with facial paralysis who underwent facial videography. Videos were independently scored by 3 facial nerve specialists using the House-Brackmann Scales (HBI and HBII). Digital scoring was performed with Facogram software. Scores were recorded and compared using intraclass and Pearson (r) correlations.

Results: Interobserver correlation was high with HBII, with overall scores in excellent agreement (intraclass correlation range, 0.78-0.95; P ≤ 0.0001). There were strong correlations between Facogram and HBII (r ≥ 0.67, P ≤ 0.0001) and strong intraobserver correlations between HBI and HBII (r ≥ 0.71, P ≤ 0.0001). The HBII required more clinician time [mean (SD), 72 (21) seconds per case], compared with Facogram, which did not require any clinician time.

Conclusions: An automated, zone-specific facial analysis tool can eliminate clinician subjectivity and allow standardized assessment of facial paralysis.

Publication types

  • Comparative Study
  • Evaluation Study

MeSH terms

  • Adult
  • Facial Nerve / physiopathology*
  • Facial Paralysis / classification*
  • Facial Paralysis / diagnosis
  • Facial Paralysis / physiopathology*
  • Female
  • Humans
  • Image Processing, Computer-Assisted / methods*
  • Male
  • Neural Networks, Computer
  • Observer Variation
  • Retrospective Studies
  • Videotape Recording*