克氏针和空心钉张力带内固定治疗横断型髌骨骨折生物力学研究

目的比较空心拉力钉张力带系统和克氏针张力带系统内固定治疗横断型髌骨骨折的生物力学特性。方法对6具新鲜尸体12个下肢标本,开放截骨造成横断型髌骨骨折模型,随机采用空心拉力钉张力带和克氏针张力带固定,在膝关节伸直位加载使髌骨关节面移位达3 mm或最大加载负荷达300 N、周期性牵拉股四头肌腱使膝关节在伸直和屈曲90°之间运动10个周期记录骨折的最大位移以及膝关节固定在屈曲位45°使骨折移位达6 mm的最大载荷进行生物力学测定。结果空心拉力钉张力带组在膝关节伸直位、周期性牵拉股四头肌使膝关节在伸直和屈曲90°之间运动以及屈曲45°时都较克氏针张力带组具有更好的生物力学稳定性。结论空心拉力钉张力带系统较克氏针张力带系统能够提供更稳定的固定效果,为横断型髌骨骨折的一期愈合及患者早期进行功能锻炼以更好地恢复关节功能提供可能。     

锚钉结合张力带钢丝治疗髌骨下极骨折

目的研究锚钉结合张力带钢丝治疗髌骨下极骨折的疗效。方法我院于2008年3月至2009年9月采用锚钉结合张力带钢丝方法治疗髌骨下极骨折34例。术中以锚钉固定修补髌骨下极骨折块及髌韧带,并辅以胫骨结节至髌骨中上部的张力带钢丝。结果 34例患者均获12～25个月,平均17个月随访,所有骨折均愈合,2例术后出现局部浅表感染,经换药及相应抗炎治疗后愈合。陆裕朴膝关节功能评定标准评价显示,优27例,良6例,可1例,优良率为97.1%。结论锚钉结合张力带钢丝治疗髌骨下极骨折固定牢靠,并发症少,效果确切。     

克氏针加钢丝张力带固定治疗髌骨骨折

<正>2009年8月~2013年5月,我科应用克氏针结合钢丝张力带固定治疗67例髌骨骨折患者,取得了满意疗效,报道如下。1材料与方法1.1病例资料本组67例,男37例,女30例,年龄22~75岁。移位明显的单纯横断闭合骨折42例,斜形骨折6例,粉碎不严重的骨折19例;均为新鲜骨折。受伤至手术时间2 h~7 d。1.2治疗方法腰麻。行髌前正中纵行切口。复位后用巾钳夹住把持。C臂     

经皮穿刺与切开复位张力带固定治疗横断型髌骨骨折的比较

目的比较经皮穿刺与切开复位张力带固定治疗横断型髌骨骨折的临床疗效. 方法采用前瞻性研究,将1997年～2003年收治的62例髌骨骨折患者随意分为两组,一组采用经皮穿刺张力带固定治疗(27例,其中克氏针钢丝张力带23例,空心钉张力带4例),另一组采用切开复位克氏针钢丝张力带固定治疗(35例).比较两组骨折愈合时间、骨折复位、关节活动度及膝关节功能. 结果所有病例随访6～48个月,两组均达到骨性愈合,膝关节功能优良率经皮组为88.9%(24/27),切开组为88.6%(31/35),无显著差异(χ2=0.000,P=1.000).骨折愈合时间经皮组早于切开组(χ2=6.581,P=0.037). 结论经皮穿刺张力带固定法治疗横断型髌骨骨折能够满足骨折愈合及功能恢复所需要的解剖复位和固定强度,损伤小,骨折愈合快,临床效果良好.     

张力带固定治疗髌骨粉碎性骨折

<正>2010年1月~2012年6月,我科应侧7例。闭合骨折17例,开放骨折2用张力带钢丝克氏针治疗19例髌骨粉例。受伤至手术时间2~10 d。碎性骨折患者,临床效果良好,报道如1.2治疗方法硬膜外麻醉。开放骨下。折患者先行伤口清创缝合。手术采用膝正中切口,将粉碎的髌骨向外翻转,直视1材料与方法下利用髌钳复位骨折块,确保关节面平1.1病例资料本组19例,男15例,整,尽可能达到解剖复位,对于无法固定女4例,年龄20~65岁。左侧12例,右     

Factors affecting the outcomes of modified tension band wiring techniques in transverse patellar fractures

IntroductionModified tension band wiring has been widely used to treat transverse patellar fractures. However, few studies have evaluated the clinical outcomes using different methods of Kirschner wire bending, location of the tension band, and depths of Kirschner wires. Thus, we tried to clarify these factors according to our clinical outcomes.Patients and methodsThis retrospective cohort study recruited consecutive patients underwent surgical fixation for patellar fractures using modified tension band technique between January 2010 and December 2015. Different factors in this procedure, including the bending manner of the Kirschner wires, their depth, and location of the tension band with respect to the superior and inferior border of the patella were recorded and analysed. The primary outcome was early loss of fixation. The secondary outcomes were minor loss of reduction, implant breakage, deep infection, and the need for implant removal.ResultsThis study included 170 patients with patellar fractures. Regarding the bending method, similar results were obtained with bilaterally or proximally bent Kirschner wires. Regarding length, the tension band was placed closely (within 25% of the patella length) in 124 patients and distantly in 46 patients. The rates of loss of reduction and implant breakage were significantly higher in the distantly placed tension bands. Regarding depth, 37 patellar fractures were fixed with the Kirschner wires at the superficial one third of the patellae while the K- wires at the middle layer of patella were used in the remaining 133 patellar fractures. A significantly higher rate of minor loss of reduction was obtained using the superficial Kirschner wires.ConclusionThe modified tension band technique for transverse patella fractures provides favourable clinical outcomes, with low failure (5%) and infection (2%) rates. Implant irritation is the major complication, and almost half of cases require implant removal. The location of the tension band with respect to the superior and inferior border of the patella plays an important role in clinical outcomes. Placing the wire close to the patella may prevent major loss of reduction and implant breakage. Superficially placed Kirschner wires also affect clinical outcomes by increasing the rate of minor loss of reduction.     

经皮穿刺张力带固定术治疗髌骨骨折的探讨

目的　探讨经皮穿刺张力带固定术治疗髌骨骨折治疗效果。　方法　回顾分析 1999年 4月以来用经皮穿刺张力带固定术治疗 19例髌骨骨折的疗效。　结果　根据胥少汀[1] 的综合评分法 ,对骨折复位、愈合、膝关节活动行走功能几个方面进行评定 ,优 13例 ,良 6例。　结论　经皮穿刺张力带固定术治疗髌骨骨折符合生物力学要求 ,具有创伤小 ,操作简单 ,疗效确切 ,病人康复快等优点。     

钢丝张力带治疗Bennett骨折

目的探讨以钢丝张力带固定Bennett骨折的手术方法及临床疗效。方法对28例Bennett骨折患者行钢丝张力带内固定术,术后对第一腕掌关节功能、疼痛及拇指的捏力、握力进行评估。结果本组28例,全部得到随访,随访时间13-18个月,影像学显示均达到骨性愈合,愈合平均时间为5周。第一腕掌关节屈伸平均达到48°,拇指外展平均达到80°,捏力及握力平均达到7．3kg和41．0kg。结论采用钢丝张力带固定Bennett骨折．是一种有效的内固定手术方法。     

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     

髌骨骨折空心钉张力带固定关节镜与切开复位疗效比较

2005年5月～2009年6月,我院在关节镜下用空心钉张力带固定治疗髌骨骨折54例患者（关节镜组）;2003年3月～2005年4月,我院采用切开复位内固定治疗的髌骨骨折患者47例患者（切开复位组）。笔者对两种方法的疗效进行对比分析,报道如下。     

克氏针联合张力带钢丝内固定治疗掌骨头骨折

目的 研究克氏针联合张力带钢丝内固定治疗掌骨头骨折的临床效果.方法 2003年7月一2009年3月,我院对68例84指掌骨头骨折应用克氏针张力带钢丝进行内固定,并辅以早期的功能锻炼.结果 术后,68例中65例伤口或切口一期愈合,3例骨外露,其中1例因克氏针旋转、钢丝脱落导致骨折移位.随访12～68个月,平均40个月.X片示骨折愈合时间～612周,平均8周,按TAM功能评分标准评定,优良率91%.结论 应用克氏针联合张力带钢丝内固定治疗掌骨头骨折是一种可靠的治疗方法.     

微创Cable-Pin系统和改良张力带内固定治疗髌骨横形骨折的疗效比较

目的比较微创Cable-Pin系统和改良张力带内固定治疗闭合性髌骨横形骨折的疗效。方法采用微创CablePin系统内固定治疗髌骨横形骨折30例(微创组),采用切开复位改良张力带内固定治疗髌骨横形骨折30例(张力带组)。比较2组手术时间、骨折愈合时间、术后VAS评分、膝关节屈曲度、膝关节功能Bostman评分、并发症。结果微创组手术时间(54.3±9.8)min,较张力带组(48.5±6.1)min长,但差异无统计学意义(t=1.990,P=0.100)。微创组骨折愈合时间(6.8±2.7)周,较张力带组(11.5±1.2)周明显缩短,差异有统计学意义(t=9.350,P=0.001)。微创组术后前3个月的VAS评分明显高于张力带组,差异有统计学意义(P0.05);术后6个月2组差异无统计学意义(P0.05)。微创组术后1、2、3、6、12、18个月膝关节功能屈曲度都大于张力带组,差异有统计学意义(P0.05)。术后3、6、12、18个月微创组膝关节功能Bostman评分明显优于张力带组,差异有统计学意义(P0.05)。结论微创Cable-Pin系统治疗髌骨骨折在术后疼痛、骨折愈合时间、膝关节屈曲度、膝关节功能评分和并发症方面要优于切开复位改良张力带内固定。     

空心钉结合张力带治疗髌骨骨折

<正>2010年1月~2013年12月,我科采用空心钉张力带固定治疗43例髌骨骨折患者,取得良好疗效,报道如下。1材料与方法1.1病例资料本组43例,男31例,女12例,年龄20~65岁。均为闭合横形髌骨骨折。1.2手术方法腰麻或硬膜外麻醉。髌骨前方纵行切口,复位髌骨,用布巾钳临时固定,在髌骨中内、中外1/3处分别钻入2枚克氏针,距关节面约3 mm,C     

Management of heterotopic ossification and restricted forearm rotation after tension band wiring for olecranon fracture

A 32-year-old lady presented to our clinic with persistent painful restriction of her dominant forearm movements for three months after tension band wiring of olecranon. She had full elbow flexion and extension; however, her forearm rotations were restricted and painful. Investigations revealed prominent tips of the wire, eroding the radial tuberosity with heterotopic ossification between the radius and ulna. As there was no synostosis, the patient had implant exit. During surgery, before implant removal, examination under anaesthesia revealed a mechanical block of the rotation beyond 30° on pronation and supination from neutral. However, after the removal of implant, the mechanical block eased off and with gentle manipulation, full pronation and supination were achieved. At the final follow-up at 6 months, the patient had full pain-free forearm rotation with regression of heterotopic ossification. Our case report highlights the importance of intra-operative assessment of wire tips at full supination and pronation, and in patients with restricted forearm rotation, CT scan may be needed to assess the position of the hardware is essential as it can progress to synostosis. In cases with prominent hardware, removal of the implant may suffice if performed before the development of synostosis     

A novel technique of patella fracture fixation facilitating early mobilization and reducing re-operation rates

Objective

Fractures of patella constitute 1% of all fractures. Various techniques have been described for internal fixation of patella fractures. Superiority of one technique over the other has long been debated. We reviewed a series of fifty-one patients with transverse or comminuted fractures of patella treated with a novel technique to assess if it had any advantages over the existing methods of fixation.

Design

Retrospective.

Setting

A tertiary care centre.

Patients & methods

Fifty-one patients with patella fracture OTA 34C, with a mean age of 39 years (range 18–61) were treated with technique of cerclage and two tension bands at our institute. Forty-eight patients completed the study.

Main outcome measurements

Range of Motion and evidence of radiological union were assessed at regular follow-ups.

Results

Forty-four out of forty-eight patients had gained up-to 90 degrees of active flexion at the end of 1 week. Two patients (4.2%) developed superficial infection. All fractures had united at the end of 12 weeks. Five patients (10.3%) underwent a second surgery; four (8.3%) due to implant related complications. Malunion or non-union was not noted in any of the cases.

Conclusion

The advantages of the described method are early mobilization, elimination of k-wire related complications, and ease of use in comminuted fracture pattern as well and a lower reoperation rates as compared to the available literature. We strongly recommend its use in cases of displaced comminuted/transverse fractures of patella as an alternate method of treatment.

Level of evidence

Level III.     

髌骨骨折不同改良方式张力带钢丝固定的生物力学研究及临床应用

【摘要】目的 为临床选择有效的骸骨骨折内固定方式提供实验依据。方法 取4具外伤截肢后下肢,保留股四头肌健、骸骨、骸韧带及关节囊,将股骨、腔骨固定在材料试验机上,维持腔股关节屈曲36”位,通过牵拉肌腥产生张力,用线性运动传感器测定骨折移位,移位3rum为固定失效,测AO张力带钢丝、昏氏张力带钢丝、“8”字张力带钢丝和Magnt,&x)tl钢丝4种固定法。结果“8”字张力带钢丝和肯氏张力带钢丝固定效果最好,AO张力带钢丝次之,三者均能承受294N以上牵张力,允许术后早期活动,M哪——钢丝不能承受294N以上牵张力,固定欠可靠。临床应用“8”字张力带钢丝固定治疗骸骨骨折42例,其中横断骨折36例,粉碎性骨折6例,随访6~26个月,优良率达95.2%。结论 克氏针“8”字张力带钢丝固定是治疗骸骨骨折首选方法,其固定效果可靠,疗效高。     

A double button adjustable loop device is biomechanically equivalent to tension band wire in the fixation of transverse patellar fractures—A cadaveric study

IntroductionTension-band wire fixation of patellar fractures is associated with significant hardware-related complications and infection. Braided polyester suture fixation is an alternative option. However, these suture fixations have higher failure rates due to the difficulty in achieving rigid suture knot fixation. The Arthrex syndesmotic TightRope, which is a double-button adjustable loop fixation device utilizing a 4-point locking system using FibreWire, may not only offer stiff rigid fixation using a knotless system, but may also obviate the need for implant removal due to hardware related problems. The aim of our study is to compare the fixation rigidity of patella fractures using Tightrope versus conventional tension-band wiring (TBW) in a cadaveric model.Materials and methodsTBW fixation was compared to TightRope fixation of transverse patella fractures in 5 matched pairs of cadaveric knees. The knees were cyclically brought through 0–90° of motion for a total of 500 cycles. Fracture gapping was measured before the start of the cycling, and at 50, 100, 200 and 500 cycles using an extensometer. The mean maximum fracture gapping was derived. Failure of the construct was defined as a displacement of more than 3 mm, patella fracture or implant breakage.ResultsAll but one knee from each group survived 500 cycles. The two failures were due to a fracture gap of more than 3 mm during cycling. There was no significant difference in the mean number of cycles tolerated. There was no implant breakage. There was no statistical significant difference in mean maximum fracture gap between the TBW and TightRope group at all cyclical milestones after 500 cycles (0.3026 ± 0.4091 mm vs 0.3558 ± 0.7173 mm, p = 0.388).ConclusionsWe found no difference between the TBW and Tightrope fixation in terms of fracture gapping and failure. With possible lower risk of complications such as implant migration and soft tissue irritation, we believe tightrope fixation is a feasible alternative in fracture management of transverse patella fractures.     

Biomechanical comparison for different configurations of tension band wiring techniques in treating an olecranon fracture

BACKGROUND: The aim of this study was to compare the superiority between the newly designed modified AO tension band wiring technique and the traditional modified AO tension band wiring technique in treating an olecranon fracture. METHODS: Eight pairs of fresh cadaveric ulnae were tested biomechanically. After transverse osteotomy of the olecranon, all left ulnae were fixed by the traditional modified AO technique with two Kirschner wires inserted through the anterior ulnar cortex and all right ulnae by the new technique with two Kirschner wires inserted into the marrow cavity from the olecranon to the ulnar styloid process. All specimens were tested by the Material Testing System machine to evaluate fragment displacement and the maximal failure load. A dual linear variable displacement transducer was used to measure relative minimal displacement. RESULTS: There was no significant difference between the techniques. The maximal failure load by either technique was more than 80 kg. Even at testing failure, no Kirschner wires migrated proximally. CONCLUSION: The new technique may be applied widely to treat all olecranon fractures, because it is a technically easier and safer technique. Less than 5.5-kg loads could be permitted in daily activity postoperatively. A single tolerable loading weight should not exceed 8 kg. Kirschner wires will not migrate proximally, despite increased joint loading. Clinically, this study may confirm indirectly the hypothesis that proximal migration of Kirschner wires was mainly due to triceps traction.