Longer length Baha™ abutments decrease wound complications and revision surgery

Terah J. Allis, Benjamin D. Owen, Baojiang Chen, Dwight T Jones, Gary Floyd Moore

Research output: Contribution to journalArticle

12 Scopus citations


Objectives/Hypothesis To study the complication rates of skin overgrowth, infection, and the need for revision surgery in longer length Baha™ abutments. Study Design Prospective observational cohort study compared with a retrospective historical control. Methods After the University of Nebraska Medical Center (UNMC) Institutional Review Board approval was obtained, data was collected from a prospective 8.5-mm abutment study group of 21 subjects with informed consent from October 2011 through October 2012, and was compared to a retrospective 5.5-mm abutment historical cohort of 23 patients who had undergone Baha™ by the same surgeon from May 2010 to October 2011. Patient demographics, body mass index (BMI), smoking status, and wound complications (skin overgrowth, infection, the need for revision surgery) were statistically investigated and compared between the groups. Results Forty-four patients were studied. The groups were similar in smoking status, diabetes, and a female preponderance. The 8.5-mm abutment group was older (P = 0.012). The average BMI for both groups was classified as overweight and nearly obese (BMI 28.8). Rates of infection, skin overgrowth, and the need for revision surgery related to wound complications were significantly decreased in the longer 8.5-mm abutment group (P = 0.020, P = 0.012, P = 0.007, respectively). BMI did not correlate with decreased infection, skin overgrowth, and the need for revision surgery based on abutment length as hypothesized (P = 0.214, P = 0.206, P = 0.408). Conclusions The 8.5-mm abutment lends to decreased complications postoperatively, including infection, skin overgrowth, and the need for revision surgery. Level of Evidence 3b. Laryngoscope, 124:989-992, 2014

Original languageEnglish (US)
Pages (from-to)989-992
Number of pages4
Issue number4
Publication statusPublished - Apr 2014



  • BMI
  • Baha™
  • abutment
  • implants
  • revision surgery
  • scalp thickness
  • wound complications

ASJC Scopus subject areas

  • Otorhinolaryngology

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