Novel flexible suture fixation for the distal tibiofibular syndesmotic joint injury: A cadaveric biomechanical model

Brandon E. Gough, Alexander C.M. Chong, Steven J. Howell, Joseph W. Galvin, Paul H. Wooley

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Syndesmotic injuries of the ankle commonly occur by an external rotation force applied to the ankle joint. Ten fresh-frozen lower extremities from cadavers were used. A specially designed apparatus was used to stabilize the specimen and rotate the ankle joint from internally rotated 25° to externally rotated 35° at a rate of 6°/s for 10 cycles. Two stages were tested (stage I, specimens intact; and stage II, simulated pronation external rotation type injury with fixation). Group 1 was fixed with a novel suture construct across the syndesmotic joint, and group 2 was fixed with a single metallic screw. The torque, rotational angle, and 3-dimensional syndesmotic diastasis readings were recorded. Three-dimensional tibiofibular diastasis was identified. The fibula of the intact specimens displaced an average of 8.6±1.7, 2.4±1.0, and 1.4±1.0mm in the anterior, lateral, and superior direction, respectively, when the foot was externally rotated 35°. The sectioning of the syndesmostic ligaments and deltoid ligament resulted in a significant decrease in syndesmotic diastasis and foot torsional force (. p<.05). The ligament-sectioned specimen lost 57% (externally rotated) and 17% (internally rotated) torsional strength compared with the intact specimen. Groups 1 and 2 provided similar biomechanical stability in this cadaveric model of a syndesmosis deficiency.

Original languageEnglish (US)
Pages (from-to)706-711
Number of pages6
JournalJournal of Foot and Ankle Surgery
Volume53
Issue number6
DOIs
StatePublished - Nov 1 2014

Keywords

  • Cadaver specimen
  • Deltoid ligament
  • Fibula
  • Syndesmosis
  • Tibia
  • Tibiofibular diastasis

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

Fingerprint Dive into the research topics of 'Novel flexible suture fixation for the distal tibiofibular syndesmotic joint injury: A cadaveric biomechanical model'. Together they form a unique fingerprint.

Cite this