Borges José Humberto de Souza, da Silva Filho Antonio Lisboa, Pereira Neto Francisco, Daher Walter Rodrigo, de Mesquita Alessandro Queiroz, Freitas Anderson
Department of Orthopedic and Traumatology of Hospital Regional do Gama do Distrito Federal (HRG -DF) - Brasília, DF, Brazil.
Acta Ortop Bras. 2012;20(1):13-6. doi: 10.1590/S1413-78522012000100002.
To carry out isolated and comparative evaluations of the measurements of the set eccentric guide plates used in 4.5mm surgical implants, and to determine the effect of these measurements on compression strength.
Four eccentric guides, four large dynamic compression plates (L-DCP) from four local manufacturers, and a Vonder(®) 200 mm caliper brand were used. Five standard parameter measurements were created for the set eccentric guide-plate, which were identified as A to E. Four sets were made, using materials of the same factory, and identified as groups I to IV. The analyses were performed by measuring all the parameters from a ventral view of the plate, with the eccentric guide placed in the plate hole.
Groups I and II showed the same values for all the parameters. All the groups showed the same measurements for E = 8.15 e B = 3.60. Group III: A = 8.10mm, C = 3.25mm, D = 1.25mm. Group IV: A = 7.00mm, C = 3.10mm, D = 0.30mm. Maximum compression force was (F Max.): Group I 80.58 N, Group. II: F Max. 81.63 N, Group. III: F Max. 36.32N, Group. IV: F Max. 37.52N.
The measurements evaluated show a lack of standardization in the manufacture of orthopedic instruments and its effects on the values for compression strength.
Level III, analytical study.
对4.5mm外科植入物中使用的成套偏心导向板的测量值进行单独和比较评估,并确定这些测量值对压缩强度的影响。
使用四个偏心导向器、来自四个当地制造商的四个大型动力加压钢板(L-DCP)以及一个Vonder(®)200mm卡尺品牌。为成套偏心导向板创建了五个标准参数测量值,分别标识为A至E。使用同一工厂的材料制作了四组,分别标识为I至IV组。通过将偏心导向器置于钢板孔中,从钢板腹侧视图测量所有参数来进行分析。
I组和II组的所有参数值相同。所有组的E = 8.15和B = 3.60测量值相同。III组:A = 8.10mm,C = 3.25mm,D = 1.25mm。IV组:A = 7.00mm,C = 3.10mm,D = 0.30mm。最大压缩力为(F Max.):I组80.58N,II组:F Max. 81.63N,III组:F Max. 36.32N,IV组:F Max. 37.52N。
评估的测量结果表明,骨科器械制造缺乏标准化及其对压缩强度值的影响。
III级,分析性研究。