Biomechanical properties of internal fixation plate for patellar fracture

doi:10.3969/j.issn.2095-4344.2014.04.012

Abstract

Abstract:

BACKGROUND: There are currently various surgical methods of patella fracture, and they have advantages and disadvantages, thus cannot well meet the requirements of patients.

OBJECTIVE: To evaluate biomechanical properties of internal fixation plate to treat patellar fracture and to provide theoretical evidence for clinical application.

METHODS: According to the statistics of patella in the Chinese population, a titanium alloy spider internal fixation plate was designed and manufactured for the treatment of patellar fractures. Knee joint specimens in six fresh cadavers were randomly divided into two groups and the comminuted fracture model of patella were established. The models were fixed with internal fixation plate of patella and NiTi patellar concentrator. Biomechanical tests were carried out to compare the biomechanical properties.

RESULTS AND CONCLUSION: Both the two fixation methods could meet the 1-kN quadriceps femoris contraction. The internal fixation plate of patella was superior to NiTi patellar concentrator in the patellar isolation shift, muscle strength and joint strength, as well as mechanical properties of patella-point surface. There were significant differences between the two groups (P < 0.05). The internal fixation plate of patella is designed in accordance with the anatomical and biomechanical properties of the patella, the fixation strength can completely meet clinical requirement and deserve further application.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

全文链接：

Key words: patella, fractures, internal fixators, biomechanics

CLC Number:

R394.2

Guan Zhi-hai, Wang Qin-ye, Wang Yi-jin, Luo Ya-ping, Chang Xiao-bo, Feng Xia-ying. Biomechanical properties of internal fixation plate for patellar fracture[J]. Chinese Journal of Tissue Engineering Research, 2014, 18(4): 559-564.

Figures/Tables 5

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