Journal article
The effect of suture-button fixation on simulated syndesmotic malreduction: a cadaveric study
Journal of bone and joint surgery. American volume, Vol.96(20), pp.1732-1738
10/15/2014
DOI: 10.2106/JBJS.N.00198
PMID: 25320200
Abstract
The accuracy of reduction of distal tibiofibular syndesmosis disruptions has been associated with the clinical outcome. Suture-button fixation of the syndesmosis is a dynamic alternative mode of fixation. We hypothesized that with deliberate clamp-induced malreduction, suture-button fixation of the syndesmosis would allow a more anatomic post-fixation position compared with screw fixation.
Forty-eight syndesmotic fixations were performed on twelve through-knee cadaveric specimens. The syndesmosis was destabilized and off-axis clamping was used to produce both anterior and posterior malreduction patterns. In twelve scenarios (six anterior and six posterior malreductions), syndesmotic screw fixation was used, followed by computed tomography. With tenacula holding the malreduction, the syndesmosis screws were exchanged for a suture-button construct and the specimens underwent a subsequent computed tomography scan. In the other twelve scenarios, the suture-button fixation was achieved first, followed by screw fixation. Standardized measurements of anterior-posterior and medial-lateral fibular displacement were performed by two observers blinded to the method of fixation.
With anterior off-axis clamping, the mean sagittal malreduction was 2.7 ± 2.0 mm with screw fixation and 1.0 ± 1.0 mm with suture-button fixation (p = 0.02). With posterior off-axis clamping, the sagittal malreduction was 7.2 ± 2.3 mm with screw fixation and 0.5 ± 1.4 mm with suture-button fixation (p < 0.01). No differences were observed between fixation types in the coronal plane (p = 0.20 for anterior malreductions and p = 0.06 for posterior malreductions).
With deliberate malreduction in a cadaver model, suture-button fixation of the syndesmosis results in less post-fixation displacement compared with screw fixation. The suture button's ability to allow for natural correction of deliberate malreduction was greatest with posterior off-axis clamping.
Although the clinical relevance is unknown, dynamic syndesmotic fixation may mitigate clamp-induced malreduction.
Details
- Title: Subtitle
- The effect of suture-button fixation on simulated syndesmotic malreduction: a cadaveric study
- Creators
- Robert W Westermann - Department of Orthopaedic Surgery and Rehabilitation, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, 01008 JPP, Iowa City, IA 52242. E-mail address for R.W. Westermann: Robert-Westermann@uiowa.edu. E-mail address for C. Rungprai: chamnanni-rungprai@uiowa.edu. E-mail address for J. Femino: john-femino@uiowa.edu. E-mail address for A. Amendola: ned-amendola@uiowa.edu. E-mail address for P. Phisitkul: phinit-phisitkul@uiowa.edu. E-mail address: jessica-goetz@uiowa.eduChamnanni Rungprai - Department of Orthopaedic Surgery and Rehabilitation, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, 01008 JPP, Iowa City, IA 52242. E-mail address for R.W. Westermann: Robert-Westermann@uiowa.edu. E-mail address for C. Rungprai: chamnanni-rungprai@uiowa.edu. E-mail address for J. Femino: john-femino@uiowa.edu. E-mail address for A. Amendola: ned-amendola@uiowa.edu. E-mail address for P. Phisitkul: phinit-phisitkul@uiowa.edu. E-mail address: jessica-goetz@uiowa.eduJessica E Goetz - Department of Orthopaedic Surgery and Rehabilitation, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, 01008 JPP, Iowa City, IA 52242. E-mail address for R.W. Westermann: Robert-Westermann@uiowa.edu. E-mail address for C. Rungprai: chamnanni-rungprai@uiowa.edu. E-mail address for J. Femino: john-femino@uiowa.edu. E-mail address for A. Amendola: ned-amendola@uiowa.edu. E-mail address for P. Phisitkul: phinit-phisitkul@uiowa.edu. E-mail address: jessica-goetz@uiowa.eduJohn Femino - Department of Orthopaedic Surgery and Rehabilitation, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, 01008 JPP, Iowa City, IA 52242. E-mail address for R.W. Westermann: Robert-Westermann@uiowa.edu. E-mail address for C. Rungprai: chamnanni-rungprai@uiowa.edu. E-mail address for J. Femino: john-femino@uiowa.edu. E-mail address for A. Amendola: ned-amendola@uiowa.edu. E-mail address for P. Phisitkul: phinit-phisitkul@uiowa.edu. E-mail address: jessica-goetz@uiowa.eduAnnunziato Amendola - Department of Orthopaedic Surgery and Rehabilitation, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, 01008 JPP, Iowa City, IA 52242. E-mail address for R.W. Westermann: Robert-Westermann@uiowa.edu. E-mail address for C. Rungprai: chamnanni-rungprai@uiowa.edu. E-mail address for J. Femino: john-femino@uiowa.edu. E-mail address for A. Amendola: ned-amendola@uiowa.edu. E-mail address for P. Phisitkul: phinit-phisitkul@uiowa.edu. E-mail address: jessica-goetz@uiowa.eduPhinit Phisitkul - Department of Orthopaedic Surgery and Rehabilitation, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, 01008 JPP, Iowa City, IA 52242. E-mail address for R.W. Westermann: Robert-Westermann@uiowa.edu. E-mail address for C. Rungprai: chamnanni-rungprai@uiowa.edu. E-mail address for J. Femino: john-femino@uiowa.edu. E-mail address for A. Amendola: ned-amendola@uiowa.edu. E-mail address for P. Phisitkul: phinit-phisitkul@uiowa.edu. E-mail address: jessica-goetz@uiowa.edu
- Resource Type
- Journal article
- Publication Details
- Journal of bone and joint surgery. American volume, Vol.96(20), pp.1732-1738
- DOI
- 10.2106/JBJS.N.00198
- PMID
- 25320200
- NLM abbreviation
- J Bone Joint Surg Am
- ISSN
- 0021-9355
- eISSN
- 1535-1386
- Publisher
- Journal of Bone and Joint Surgery Incorporated; United States
- Language
- English
- Date published
- 10/15/2014
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Orthopedics and Rehabilitation; Athletic Training Program
- Record Identifier
- 9984040228602771
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