A biomechanical comparison of midshaft clavicle plate fixation between two screws and three screws on each side of the fractures

Qanun Medika Jurnal Kedokteran Fakultas Kedokteran Universitas Muhammadiyah Surabaya Pub Date : 2022-01-12 DOI:10.30651/jqm.v6i1.7626

Naufal Ranadi Firas, Erwin Ramawan

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Abstract

ABSTRACT The operative management of mid-clavicle fractures with plate and screw fixation is often performed, with either two or three screws on each side of the fracture. This research aimed to compare biomechanical stability on plate and screw fixation of the middle clavicle fracture with two screws and three screws on each fracture side. There were 12 samples of the fractured cadaveric clavicle in the middle and divided into two treatment groups. The first treatment group was given plate fixation and two screws on each side of the fracture, the second treatment group with plate fixation and three screws. Each group was given a repetitive load tensile force of 200 N, and the fracture shift was measured every ten times, 20 times, and 50 times. The statistical analysis showed a significant difference between plate fixation with two screws and three screws on the tensile force's repetition 20 times and 50 times. The lowest average displacement value after repetition of tensile forces is found in fixation with three screws. Biomechanically, the plate fixation system with three screws on each fracture side was more stable than the two screws in the middle clavicle fracture fixation.Keywords: biomechanics, clavicle fracture, plate, screwCorrespondence: nau.orthobaya@gmail.com

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中轴锁骨钢板内固定两枚螺钉与每侧三枚螺钉的生物力学比较

锁骨中部骨折的手术治疗通常采用钢板螺钉固定，骨折两侧各用两枚或三枚螺钉固定。本研究的目的是比较中锁骨骨折骨折侧分别使用两枚螺钉和三枚螺钉进行钢板和螺钉固定的生物力学稳定性。选取12例尸体锁骨中段骨折标本，分为两个治疗组。第一治疗组采用钢板固定，骨折两侧各2枚螺钉;第二治疗组采用钢板固定，骨折两侧各3枚螺钉。各组给予200 N的重复载荷拉伸力，每10次、20次、50次测量骨折位移。统计分析显示，两枚螺钉钢板固定与三枚螺钉钢板固定在拉力重复20次和50次上有显著差异。重复拉伸力后的平均位移值在三枚螺钉固定时最低。生物力学方面，每侧骨折采用三枚螺钉的钢板固定系统比中锁骨骨折采用两枚螺钉固定更稳定。关键词:生物力学，锁骨骨折，钢板，螺钉对应:nau.orthobaya@gmail.com

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Qanun Medika Jurnal Kedokteran Fakultas Kedokteran Universitas Muhammadiyah Surabaya

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8 weeks