Results of titanium locking plate and stainless steel cerclage wire combination in femoral fractures

Background:

Some in vitro studies warn combining different metals in orthopedic surgery. The aim of this study is to determine the impact of combining titanium and stainless steel on bone healing and the clinical course of patients undergoing internal fixation of femoral fractures.

Materials and Methods:

69 patients with femoral fractures had polyaxial locking plate osteosynthesis. The locking plate was made of a titanium alloy. Two different cohorts were defined: (a) sole plating and (b) additional stainless steel cerclage wiring. Postoperative radiographs and clinical followup were performed at 6 weeks, 3 months and 12 months.

Results:

Cohorts A and B had 36 and 33 patients, respectively. Patient demographics and comorbidities were similar in both groups. In two cases in cohort A, surgical revision was necessary. No complication could be attributed to the combination of titanium and stainless steel.

Conclusion:

The combination of stainless steel cerclage wires and titanium plates does not compromise fracture healing or the postoperative clinical course.     

尺骨上段合并鹰嘴骨折内固定的生物力学研究

目的比较克氏针张力带、重建钢板联合张力带及鹰嘴解剖钢板固定尺骨上段合并鹰嘴骨折3种方式的生物力学稳定性,为临床选择内固定提供理论依据。方法 8个自愿捐献的新鲜成人尸体肘关节标本,均为男性;年龄26～43岁,平均34.8岁。于尺骨上段及尺骨鹰嘴分别截骨制作尺骨上段合并鹰嘴骨折模型。每个标本分别采用克氏针张力带(A组)、重建钢板联合张力带(B组)及鹰嘴解剖钢板(C组)3种方式对骨折端固定。采用生物力学测试系统进行单轴压缩试验,记录载荷-位移曲线,内固定系统的稳定性采用骨折端压缩位移为2 mm时所加的载荷值进行评价。结果实验过程中未出现克氏针退出、钢板螺钉断裂、标本破坏,标本与夹具固定无松动。3组标本均表现为位移随载荷增加而逐渐增长,但B、C组的载荷-位移曲线斜率明显高于A组。当骨折端压缩位移为2 mm时,A、B、C组的所加载荷值分别为(218.6±66.9)、(560.3±116.1)、(577.2±137.6)N,B、C组所加载荷值均显著高于A组,差异有统计学意义(P<0.05);B、C组间差异无统计学意义(t=0.305,P=0.763)。结论尺骨上段合并鹰嘴骨折多为不稳定骨折,重建钢板联合张力带、鹰嘴解剖钢板固定均能满足要求,临床上可根据患者情况合理选用。克氏针张力带固定不够牢固,临床上应避免单独使用。     

种植体支抗结合片段弓矫治成人下颌牙列拥挤的临床应用研究

目的:研究安氏I类错牙合患者中,采用种植体支抗结合片段弓技术,矫治成人下颌牙列拥挤的临床效果及其作用特点。方法:选择12例成人患者,将24枚微型种植体植于下颌第一磨牙与下颌第二前磨牙之间的颊侧牙槽骨内,Ni-Ti螺旋弹簧拉长后分别连接于种植体与下颌侧切牙远中的牵引钩,来内收下前牙关闭间隙。测量下颌中切牙的颊舌向的位置变化、压低量、近远中倾斜度以及移动的速度,并通过治疗前后的X线片对比以观察切牙牙根有无吸收,牙周膜腔的变化情况。通过测量下颌第一磨牙的位置变化来衡量支抗强弱。结果:下颌中切牙向舌侧移动1.6mm,舌侧倾斜4.5°,平均压低0.5mm,无近远中倾斜,疗程3.2个月,平均向舌侧移动速度0.67mm/月;切牙牙根没有吸收,牙周膜腔宽度没有改变。下颌第一磨牙的位置没有改变。结论:所有下颌牙列的拥挤得到了解除,下颌磨牙位置没有改变,后牙咬合关系无变化。     

克氏针张力带治疗髌骨骨折

2001年3月～2010年12月,我科采用克氏针张力带治疗髌骨骨折45例,均取得满意效果。1材料与方法1.1病例资料本组45例,男33例,女12例,年龄24～73岁。横断形骨折35例,粉碎性骨折10例;新鲜闭合骨折39例、陈旧性骨折2例,开放骨折4例。1.2手术方法腰麻或连硬外麻醉。髌前纵形切口,长45～55 cm,复位较大     

切开复位克氏针张力带与闭合复位经皮空心钉内固定治疗髌骨骨折的疗效比较

目的比较切开复位克氏针张力带与闭合复位经皮双头加压空心钉内固定治疗髌骨骨折的疗效。方法回顾性分析自2013-01—2016-01诊治的65例横形髌骨骨折,采用闭合复位经皮双头加压空心钉内固定治疗30例(空心钉组),采用切开复位克氏针张力带内固定治疗35例(张力带组)。比较2组术后0.5、3、6个月的VAS评分及膝关节功能Lysholm评分。结果 65例均获得随访6~12个月,平均8个月。张力带组2例出现克氏针松动退出刺激皮肤,取出内固定后缓解。空心钉组无内固定松动断裂及皮肤刺激等并发症。空心钉组术后0.5、3、6个月VAS评分均低于张力带组,空心钉组术后0.5、3、6个月膝关节功能Lysholm评分高于张力带组,差异有统计学意义(P0.05)。结论闭合复位经皮空心钉内固定治疗髌骨骨折可取得满意的临床效果,术后患者可以获得良好的膝关节功能,且疼痛轻,并发症少。     

Clinical outcomes of an olive wire and external fixator versus a metallic screw in the treatment of inferior tibiofibular syndesmosis injuries in ankle fractures

BackgroundMetal screws are the most widely used in treating syndesmotic injuries, but failure and the rigidity of the screws can threaten the success of the treatment and increase the cost of care. We have provided an alternative with an olive wire and external fixator(OWEF) used for syndesmotic fixation.MethodsA retrospective longitudinal follow-up study was conducted. From February 2011 to January 2018, 58 of 72 patients with ankle fractures and associated syndesmotic disruption were treated with either screw or OWEF fixation. The costs, complications, and clinical outcomes using Olerud-Molander score and Visual Analog score in screw and OWEF fixation group were compared.ResultsWe found the severity of the injury, BMI of the patients and the different fixation methods were determinants of the complications and clinical outcomes. But if no malreduction of the syndesmosis was present, no difference in clinical result was detected.ConclusionThe OWEF method appeared to be at least equally functional and effective to screw fixation while maintaining possible lower complication rate.Levels of clinical evidenceLevel 3     

后路克氏针内固定治疗小儿肱骨髁上骨折

正2008年1月~2014年12月,我科采用后路克氏针内固定治疗34例肱骨髁上骨折患儿,效果满意,报道如下。1材料与方法1.1病例资料本组34例,男21例,女13例,年龄6~12岁。均为闭合肱骨髁上骨折。伸直型23例,屈曲型11例。受伤至手术时间6~13 d。1.2治疗方法臂丛麻醉或静脉复合麻醉下手术。肘后侧切口,自鹰咀尖端远侧3~4 cm,于上臂中线向近侧延伸至鹰咀上8~10 cm,显露并整复骨折。由内、外上髁各钻入1枚克氏针,将骨折交叉固定。关闭切口并放置负压引流。     

钢丝环扎加记忆合金髌骨爪治疗髌骨下极骨折

正2014年6月~2015年8月,我科采用钢丝环扎加记忆合金髌骨爪治疗68例髌骨下极骨折患者,疗效良好,报道如下。1材料与方法1.1病例资料本组68例,男43例,女25例,年龄23~65岁。均为闭合新鲜髌骨下极骨折。受伤至手术时间为2~7 d。1.2治疗方法硬膜外麻醉下手术。取髌横行直切口,显露骨折端,用带眼克氏针引钢丝自髌骨上极大型骨块横行穿过,绕髌韧带紧贴髌骨下极穿出,复位同     

外固定支架结合经皮交叉穿针固定治疗不稳定型桡骨远端骨折

目的探讨外固定支架结合经皮交叉穿针固定治疗不稳定型桡骨远端骨折的临床疗效。方法采用外固定支架结合经皮交叉穿针固定治疗34例不稳定型桡骨远端骨折患者。结果患者均获得随访,时间6~14个月。X线检查显示,骨折端解剖复位,固定牢靠,骨性愈合。按Green-O'brien腕关节评分标准评估:优26例,良6例,一般2例,优良率为94.1%。无钉道感染、骨髓炎、医源性神经肌腱伤和交感神经反射性骨营养不良等并发症。2例发生关节僵硬,经积极功能锻炼后症状好转。结论外固定支架结合经皮交叉穿针固定治疗不稳定型桡骨远端骨折能达到解剖复位,固定可靠,且有效减轻术后腕关节功能障碍。     

关节镜下经皮张力带钢丝固定治疗髌骨骨折

目的探索髌骨骨折错位在关节镜下复位、内固定的新方法。方法对56例新鲜闭合性横断型髌骨骨折病例,在关节镜下冲洗关节腔积血,清除骨折断端凝血块,去除小的骨碎片,进行髌骨复位,直接观察关节面复位对合情况。应用胥氏张力带钢丝固定原理,经皮穿入克氏针及钢丝,针孔做1cm小切口,完成内固定。结果术后2周绝大部分患者屈膝可达90°以上,骨折在6～10周达到临床愈合,出现针尾触痛者8例,克氏针松动上移2例,无钢丝断裂及脱落。治疗效果按膝关节损伤患者的功能评定法,优良率为96.4%。结论本术式两枚克氏针各有一根钢丝固定,在关节镜导引下,经皮穿针钢丝固定,不会因两根针位置不对称而产生扭距。操作方法简便、有效,有利于术后早期功能锻炼,为髌骨骨折提供了一种新的手术方法。