Biomechanical Properties of Different Fixation Techniques for Posterior Cruciate Ligament Avulsion Fractures

Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association
Christoph DomnickMirco Herbort

Abstract

To analyze the ultimate failure load, yield load, stiffness, and cyclic elongation of 4 different fixation techniques for posterior cruciate ligament avulsion fractures under cyclic loading and load-to-failure conditions. In 40 porcine knees, a standardized bony avulsion of the posterior cruciate ligament was generated. The osseous avulsion was fixed by the following techniques through an open approach: (1) direct anterograde screw fixation (3.5 mm with washer), (2) retrograde screw fixation (3.5 mm with washer), (3) cortical suspension button fixation (with No. 2 braided suture), and (4) direct suture cerclage (with No. 2 braided suture). The constructs were cyclically loaded 500 times (10 to 100 N) to measure the maximum elongation. Subsequently, loading to failure was performed, and stiffness, yield load, and maximum load were measured. A 1-way analysis-of-variance test was performed with significance set at P < .05. Button fixation resulted in lower elongation (1.25 ± 0.27 mm) than anterograde screw fixation (2.17 ± 0.74 mm, P = .0058) and the cerclage technique (2.02 ± 0.24 mm, P = .0290). The cerclage technique showed a lower yield load (493.55 ± 88.86 N) than anterograde screw fixation (720.39 ± 139.0 N, P = .0012) and r...Continue Reading

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Citations

Jun 21, 2017·EFORT Open Reviews·Michael J RaschkeChristoph Domnick
Sep 29, 2019·Archives of Orthopaedic and Trauma Surgery·Philipp ForkelLukas Willinger
Sep 8, 2019·Operative Orthopädie und Traumatologie·Philipp ForkelLukas Willinger
Dec 20, 2018·Operative Orthopädie und Traumatologie·L WillingerP Forkel
Feb 5, 2021·Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association·Wei ZhengBin Pan
Mar 7, 2021·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Philipp ForkelAndreas Schmitt

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