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Titel
Biomechanical stability of tape augmentation for anterior talofibular ligament (ATFL) repair compared to the native ATFL
Verfasser / VerfasserinSchuh, Reinhard ; Willegger, M. ; Benca, E. ; Hirtler, L. ; Hradecky, K. ; Holinka, J. ; Windhager, R.
Erschienen in
Knee Surgery, Sports Traumatology, Arthroscopy, 2016, Jg. 24, H. 4, S. 1015-1021
ErschienenSpringer, 2016
SpracheEnglisch
DokumenttypAufsatz in einer Zeitschrift
Schlagwörter (EN)Anterior talofibular ligament reconstruction / Lateral ankle instability / Tape augmentation / Bone mineral density / Biomechanical stability
URNurn:nbn:at:at-ubmuw:3-1136 Persistent Identifier (URN)
DOI10.1007/s00167-016-4048-7 
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 Das Werk ist frei verfügbar
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Biomechanical stability of tape augmentation for anterior talofibular ligament (ATFL) repair compared to the native ATFL [0.76 mb]
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Zusammenfassung (Englisch)

Purpose

Current methods of anterior talofibular ligament (ATFL) reconstruction fail to restore the stability of the native ATFL. Therefore, augmented anatomic ATFL reconstruction gained popularity in patients with attenuated tissue and additional stress on the lateral ankle ligament complex. The aim of the present study was to evaluate the biomechanical stability of the InternalBrace® (Arthrex Inc., Naples, FL, USA), a tape augmentation designed to augment the traditional Broström procedure.

Methods

Twelve (12) fresh-frozen human anatomic lower leg specimens were randomized into two groups: a native ATFL (ATFL) and a tape augmentation group (IB). Dual-energy X-ray absorptiometry (DEXA) scans were carried out to determine bone mineral density (BMD) of the specimens. The ligaments were stressed by internally rotating the tibia against the inverted fixated hindfoot. Torque at failure (Nm) and angle at failure () were recorded.

Results

The ATFL group failed at an angle of 33 10. In the IB group, construct failure occurred at an angle of 46 16. Failure torque reached 8.3 4.5 Nm in the ATFL group, whereas the IB group achieved 11.2 7.1 Nm. There was no correlation between angle at ATFL or IB construct failure or torque at failure, respectively, and BMD for both groups.

Conclusion

This study reveals that tape augmentation for ATFL reconstruction shows similar biomechanical stability compared to an intact native ATFL in terms of torque at failure and angle at failure. BMD did not influence the construct stability. Tape augmentation proved an enhanced initial stability in ATFL reconstruction which may allow for an accelerated rehabilitation process.

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CC-BY-Lizenz (4.0)Creative Commons Namensnennung 4.0 International Lizenz