Mechanical Design of an Axillary Fixation Technique to Make Single Bundle Graft for ACL Reconstruction

سال انتشار: 1402
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 142

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شناسه ملی سند علمی:

ISME31_044

تاریخ نمایه سازی: 10 خرداد 1402

چکیده مقاله:

Purpose: The present study, introduced and mechanically tested an alternative method for graft preparation for ACL reconstruction surgery. The designed method aimed to offer a replacement for conventional suturing which reduces the chance of graft rupture and gradually increases the fixation strength. Methods: to validate the study a set of experiments was performed. Five bovine tendon samples were harvested and trimmed into identical sizes. Samples were passed through two endo buttons and looped in a manner that both ends share a common surface. Two custom straps were later applied around the graft. A three-stage mechanical test was performed, a cyclical preload of ۱۰ to ۵۰ N, ۱۰ cycles, and ۰.۱ Hz. The major pullout test with a cyclical load of ۵۰ to ۲۰۰ N, ۱ Hz for ۲۰۰ cycles, and a pullout force with a loading rate of ۲۰ mm/min determining the ultimate strength of the fixation. Results: No failure occurred on the overall structure during the cyclic stages. Also, no failure associated with tendon tissue damage was recorded. All samples experienced a fixation failure during the final pull-out test. The mean values for ultimate strength, cyclic elongation, and Average cyclic Stiffness were ۲۸۷.۶۶ ± ۱۱.۸۴ N, ۲.۰۸ ± ۰.۱۵ mm, and ۱۴.۵۲ ± ۱.۰۹ kN/mm respectively. Conclusions: The results indicate that using the proposed strapping method not only reduces any chance of tendon tearing but also presents acceptable major mechanical properties in comparison with the conventional suturing method. The study showed that the new design was mechanically sound.

نویسندگان

Seyed Amirhossein Sajedi

Department of Mechanical Engineering, Sharif University of Technology, Tehran,

Solmaz Mojadam Mofrad

Department of Mechanical Engineering, Sharif University of Technology, Tehran,

Amir Nourani

Department of Mechanical Engineering, Sharif University of Technology, Tehran,

Mahmoud Chizari

School of Engineering & Computer Science, University of Hertfordshire, Hatfield, UK,