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find Author "齐巍" 2 results
  • BIOMECHANICAL COMPARATIVE STUDY ON FOUR INTERNAL FIXATIONS FOR ACETABULAR FRACTURES IN QUADRILATERAL AREA

    ObjectiveTo compare the biomechanical difference of 4 kinds of internal fixations for acetabular fracture in quadrilateral area. MethodsThe transverse fracture models were created in 16 hemipelves specimens from 8 adult males, and were randomly divided into 4 groups according to different internal fixation methods (n=4): infrapectineal buttress reconstruction plate (group A), infrapectineal buttress locking reconstruction plate (group B), reconstruction plate combined with trans-plate quadrilateral screws (group C), and anterior reconstruction plate-lag screw (group D). Then the horizontal displacement, longitudinal displacement of fractures, and axial stiffness were measured and counted to compare the stability after continuous vertical loading. ResultsUnder the same loading, the horizontal and longitudinal displacements of groups A, B, C, and D were decreased gradually; when the loading reached 1 800 N, the longitudinal displacement of group A was more than 3.00 mm, indicating the failure criterion, while the axial stiffness increased gradually. Under 200 N loading, there was no significant difference (P>0.05) in horizontal displacement, longitudinal displacement, and axial stiffness among 4 groups. When the loading reached 600-1 800 N, significant differences were found in horizontal displacement, longitudinal displacement, and axial stiffness among 4 groups (P<0.05) except the horizontal displacement between groups C and D (P>0.05). ConclusionFor acetabular fracture in the quadrilateral area, anterior reconstruction plate-lag screw for internal fixation has highest stability, followed by reconstruction plate combined with trans-plate quadrilateral screws, and they are better than infrapectineal buttress reconstruction plate and infrapectineal buttress locking reconstruction plate.

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  • 克氏针双夹扣法固定治疗远节指骨背侧基底不稳定骨折

    目的总结克氏针双夹扣法固定治疗远节指骨背侧基底不稳定骨折的疗效。 方法2008年9月-2014年3月,对15例远节指骨背侧基底不稳定骨折患者采用切开复位、克氏针双夹扣法固定。男12例,女3例;年龄18~53岁,平均32.5岁。致伤原因:戳伤8例,扭伤2例,摔伤3例,挤压伤2例。损伤指别:示指5例,中指3例,环指2例,小指5例。受伤至手术时间2~9 d,平均3.8 d。 结果患者术后切口均Ⅰ期愈合。15例均获随访,随访时间6~20个月,平均12.5个月。X线片示骨折均愈合,愈合时间5~8周,平均6.1周。术后8~12周,平均9.2周取出内固定物。末次随访时,根据总主动活动度(TAM)评价标准评定手指功能,获优9例,良5例,中1例,优良率93.3%。 结论克氏针双夹扣法固定治疗远节指骨背侧基底不稳定骨折,可使骨折、关节复位且固定牢固,允许手指早期功能锻炼,是一种有效治疗方法。

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