Erschienen in:
15.11.2016 | Original Paper
Does a different dose of gamma irradiation have the same effect on five different types of tendon allografts? — a biomechanical study
verfasst von:
Gyorgy Hangody, Gábor Szebényi, Bence Abonyi, Rita Kiss, László Hangody, Károly Pap
Erschienen in:
International Orthopaedics
|
Ausgabe 2/2017
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Abstract
Introduction
The goals of our study were to evaluate the biomechanical differences between five tendons and the changes in biomechanical properties caused by irradiation.
Methods
Achilles, quadriceps, semitendinosus + gracilis (STG), tibialis anterior (TA) and the peroneus longus (PL) were harvested from 30 donors. Group A contained 50 tendons without gamma irradiation. The groups were irradiated with a dose of 21 kGy (group B 50 tendons) and with a dose of 42 kGy (group C 50 tendons). The grafts were soaked in a radio-protectant solution and frozen at −80 °C. Cyclic loading tests were performed followed by load to failure tests. Young modulus of elasticity, maximum force, strain at tensile strength and strain at rupture were calculated.
Results
The Achilles tendons had significantly lower Young modulus than the TA (p = 0.0036) in group A. The Achilles showed significantly lower than PL (p = 0.000042) and TA (p = 0.00142) in group B and C. The quadriceps and the ST (p = 0.0037) provided poorer values than the TA (p = 0.0432) in group C. We found no difference in maximum loads among the tendons in group A. The maximum load of the Achilles and quadriceps showed better results than the PL (p = 0.0016), (p = 0.0018) and the STG (p = 0.0066), (p = 0.0019) in group C. The TA had similar results like the Achilles and quadriceps.
Discussion and conclusions
The vulnerability of gamma irradiation of TA was less than Achilles and quadriceps tendons.