Anchor placement to glenoid rim during Bankart repair recreates contact area of anterior capsulolabral complex on glenoid better than onto articular surface

Yoshiaki Itoigawa, John W. Sperling, Scott P. Steinmann, Eiji Itoi, Kai Nan An

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: This study aimed to compare the contact areas of Bankart repair with suture anchors placed on the articular surface of the glenoid versus at the rim of the glenoid because it is unclear which technique most effectively restores the footprint after Bankart repair. Methods: Ten fresh frozen cadaveric shoulders (mean age 70.7 years) were dissected. The attachment site of the capsulolabral complex from the 1 o’ clock position to the 6 o’clock position was marked with ink, and the contact area of the anterior-inferior capsulolabral complex on the glenoid neck was measured using imageJ. Bankart lesions were created, and two types of Bankart repair were performed on each specimen. The suture anchors were inserted at the glenoid rim (Rim group) and onto the glenoid articular surface 2 mm from the rim (Surface group). Using pressure-sensitive films, we examined the interface contact area. Results: The Rim group recreated 64.9% of the native surface area, while the Surface group recreated 47.3% of the area. The Rim group recreated significantly greater contact area compared to the Surface group (P = 0.0008). Conclusion: The anchor placement to the glenoid rim recreates the footprint of the capsulolabral complex on the anterior inferior glenoid better than the anchor placement onto the articular surface.

Original languageEnglish
Pages (from-to)1257-1262
Number of pages6
JournalEuropean Journal of Orthopaedic Surgery and Traumatology
Volume30
Issue number7
DOIs
Publication statusPublished - 2020 Oct 1

Keywords

  • Bankart repair
  • Biomechanics
  • Glenoid labrum
  • Instability
  • Shoulder

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

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