Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2016:2016:9872643.
doi: 10.1155/2016/9872643. Epub 2016 Nov 15.

Biomechanical Comparison of Modified Suture Bridge Using Rip-Stop versus Traditional Suture Bridge for Rotator Cuff Repair

ZiYing Wu  1 , Chong Zhang  2 , Peng Zhang  1 , TianWu Chen  1 , ShiYi Chen  1 , JiWu Chen  1
Affiliations

Biomechanical Comparison of Modified Suture Bridge Using Rip-Stop versus Traditional Suture Bridge for Rotator Cuff Repair

ZiYing Wu et al. Biomed Res Int. 2016.

Abstract

Purpose. To compare the biomechanical properties of 3 suture-bridge techniques for rotator cuff repair. Methods. Twelve pair-matched fresh-frozen shoulder specimens were randomized to 3 groups of different repair types: the medially Knotted Suture Bridge (KSB), the medially Untied Suture Bridge (USB), and the Modified Suture Bridge (MSB). Cyclic loading and load-to-failure test were performed. Parameters of elongation, stiffness, load at failure, and mode of failure were recorded. Results. The MSB technique had the significantly greatest load to failure (515.6 ± 78.0 N, P = 0.04 for KSB group; P < 0.001 for USB group), stiffness (58.0 ± 10.7 N/mm, P = 0.005 for KSB group; P < 0.001 for USB group), and lowest elongation (1.49 ± 0.39 mm, P = 0.009 for KSB group; P = 0.001 for USB group) among 3 groups. The KSB repair had significantly higher ultimate load (443.5 ± 65.0 N) than USB repair (363.5 ± 52.3 N, P = 0.024). However, there was no statistical difference in stiffness and elongation between KSB and USB technique (P = 0.396 for stiffness and P = 0.242 for elongation, resp.). The failure mode for all specimens was suture pulling through the cuff tendon. Conclusions. Our modified suture bridge technique (MSB) may provide enhanced biomechanical properties when compared with medially knotted or knotless repair. Clinical Relevance. Our modified technique may represent a promising alternative in arthroscopic rotator cuff repair.

PubMed Disclaimer

Conflict of interest statement

All authors declare that there is no conflict of interests regarding the publication of this paper.

Figures

Figure 1
Figure 1
The medially Knotted Suture Bridge (KSB) technique. Black solid circle means knot. RC, rotator cuff; GT, greater tubercle.
Figure 2
Figure 2
The medially Untied Suture Bridge (USB) technique. Black hollow circle means knotless. RC, rotator cuff; GT, greater tubercle.
Figure 3
Figure 3
The Modified Suture Bridge (MSB) repair.
Figure 4
Figure 4
(a) The fixation method of specimens was shown in the image with use of a custom soft-tissue clamp proximally and multiple fixations distally. (b) The construct failed because of suture pulling through the cuff tendon.
See this image and copyright information in PMC

Similar articles

See all similar articles

Cited by

See all "Cited by" articles

References

    1. Ide J., Karasugi T., Okamoto N., Taniwaki T., Oka K., Mizuta H. Functional and structural comparisons of the arthroscopic knotless double-row suture bridge and single-row repair for anterosuperior rotator cuff tears. Journal of Shoulder and Elbow Surgery. 2015;24(10):1544–1554. doi: 10.1016/j.jse.2015.03.015. - DOI - PubMed
    1. Leek B. T., Robertson C., Mahar A., Pedowitz R. A. Comparison of mechanical stability in double-row rotator cuff repairs between a knotless transtendon construct versus the addition of medial knots. Arthroscopy. 2010;26(9, supplement):S127–S133. doi: 10.1016/j.arthro.2010.02.035. - DOI - PubMed
    1. Busfield B. T., Glousman R. E., McGarry M. H., Tibone J. E., Lee T. Q. A biomechanical comparison of 2 technical variations of double-row rotator cuff fixation: the importance of medial row knots. The American Journal of Sports Medicine. 2008;36(5):901–906. doi: 10.1177/0363546507312640. - DOI - PubMed
    1. Mall N. A., Lee A. S., Chahal J., et al. Transosseous-equivalent rotator cuff repair: a systematic review on the biomechanical importance of tying the medial row. Arthroscopy. 2013;29(2):377–386. doi: 10.1016/j.arthro.2012.11.008. - DOI - PubMed
    1. Barber F. A., Drew O. R. A biomechanical comparison of tendon-bone interface motion and cyclic loading between single-row, triple-loaded cuff repairs and double-row, suture-tape cuff repairs using biocomposite anchors. Arthroscopy. 2012;28(9):1197–1205. doi: 10.1016/j.arthro.2012.02.015. - DOI - PubMed

LinkOut - more resources