交锁髓内钉治疗粉碎性胫骨骨折

目的 研究交锁髓内钉治疗粉碎性胫骨骨折的疗效及临床应用范围。方法 自1994．5～2000．6对86例粉碎性胫骨骨折,包括21例开放性骨折患应用交锁髓内钉固定。结果 所有病例随访7-23月,平均12个月,均获骨性愈合,平均愈合时间为5个月,患肢膝、踝关节功能优良。结论 应用交锁髓内钉治疗粉碎性胫骨骨折具有固定牢固、愈合快、并发症少等优点。     

胫骨干骨折带锁髓内钉固定和钢板螺钉固定的对比研究

目的：对照回顾性分析带锁髓内钉和钢板内固定两种方法治疗胫骨干骨折的效果。方法：髓内钉组32例（35处骨折）,根据AO分型,42A型11处,42B型18处,42C型6处;钢板组42例（45处骨折）,42A型10处,42B型22处,42C型13处。平均伤后手术时间在髓内钉和钢板组分别为3d和3.5d。随访评估患者手术时间,活动度,愈合时间,术后并发症之间的差别。结果：术后平均随访13个月（8～26个月）。髓内钉组平均手术时间为84min,钢板螺钉组平均为93min。髓内钉组踝关节平均背屈度为13°（0°～20°）,钢板组为11°（0°～20°）;跖屈分别为41°（30°～50°）,47°（30°～50°）。愈合时间髓内钉组平均为3.3个月,钢板螺钉平均为3.5个月。术后X线片显示髓内钉固定有1例出现旋转畸形,钢板组有3例出现成角畸形,均为胫骨远端1/3骨折。结论：在治疗胫骨骨折方面,带锁髓内钉和钢板内固定两种方法都可以取得理想的效果。     

The treatment of fractures of the femoral shaft with the Brooker-Wills distal locking intramedullary nail

Ninety-two fractures of the femoral shaft in eighty-five patients were followed after treatment with the Brooker-Wills distal locking intramedullary nail. Twenty-one (22.8 per cent) of the fractures were open and seventy-one (77.2 per cent) were closed; 84.8 per cent of the fractures were comminuted. All but one fracture united, in a mean time of 4.4 months. Four fractures healed with mild angulation, and three had shortening of more than one but less than two centimeters. Significant rotatory deformities did not occur. No patient required postoperative traction or external stabilization, and all but five patients regained a normal range of motion of the ipsilateral hip and knee. There were intraoperative technical problems in eleven patients (12.0 per cent) and postoperative complications in eighteen patients (19.6 per cent), including fourteen patients (15.2 per cent) with pulmonary emboli, infection, or heterotopic bone at the site of the insertion of the nail. Five patients (5.4 per cent) had postoperative complications that were directly related to the proximal and distal fixation of the nail. There was one non-union (1.1 per cent). No problems were encountered with removal of the nail. The Brooker-Wills distal locking intramedullary nail proved to be an effective device for the stabilization of fractures of the femoral shaft. The use of this modified Küntscher nail with both proximal and distal fixation has been successful in preventing clinically significant femoral angulation, malrotation, and shortening and has allowed early mobilization of the patient.     

交锁髓内钉治疗胫腓骨骨折

目的 观察交锁髓内钉治疗胫腓骨骨折的疗效及并发症防治。方法 用交锁髓内钉治疗胫腓骨骨折46例,均采用扩髓及静力型固定。结果 46例均得到随访,平均20个月（6个月-3年）,愈合时间为3-12个月,平均4个月,感染4例均为开放性骨折,肢体短缩1例,成角畸形2例,延迟愈合7例,无不愈合。根据Johner-Wruh评分标准,优36例,良7例,中2例,差1例。结论 交锁髓内钉治疗胫腓骨骨折是一种很好的方法。但仍有一些并发症,在应用中必须引起重视;开放性骨折以不扩髓为宜。     

Russell-Taylor交锁髓内钉治疗肱骨干骨折

目的 总结Ｒｕｓｓｅｌｌ－Ｔａｙｌｏｒ交锁髓内钉（ＲＴ钉）治疗肱骨干骨折的效果。方法 用非扩髓的ＲＴ钉治疗１６例肱骨干骨折,其中新鲜骨折１２例,病理骨折３例,骨折不愈合１例。２例新鲜骨折伴有桡神经挫伤。结果 平均随访１４．５个月,１５例骨折愈合,平均愈合时间为１６．５周,２例肩部疼痛。结论 ＲＴ钉可有效治疗肱骨干骨折,尤其适用于病理性骨折、骨折不愈合、多段骨折及粉碎性骨折。     

前臂交锁髓内钉治疗尺桡骨粉碎骨折的临床研究

目的探讨应用前臂交锁髓内钉治疗尺桡骨粉碎性骨折的可行性及其疗效。方法应用前臂交锁髓内钉采用切开或闭合复位技术治疗尺桡骨粉碎性骨折18例,男15例,女3例;年龄32～63岁,平均42岁。骨折按AO分型,A 1型4例,A 2型1例,A 3型2例,B 2型1例,B 3型3例,C 2型3例,C 3型4例。手术均在伤后1周内进行。结果所有病例术后随访8～10个月,骨折愈合时间8～16周,平均12周。所有患者均未发生骨不连、术后感染及桡神经深支损伤病例;术后有2例前臂旋转功能恢复欠佳,1例骨折延迟愈合,其余患者功能恢复满意。根据B erton评定标准进行评价,优10例,良5例,可2例,差1例,优良率为83.3%。结论应用前臂交锁髓内钉技术治疗尺桡骨骨折,具有手术创伤小、固定牢靠、骨折愈合率高、功能恢复快等优点,是治疗前臂骨折较理想的手术方法,尤其适用于多段骨折、粉碎性骨折。     

Interlocking intramedullary nailing for supracondylar and intercondylar fractures of the distal part of the femur

Thirty-seven fractures of the distal part of the femur in thirty-five patients were treated with interlocking intramedullary nailing. All fractures were nailed by a closed technique after any intercondylar extension of the fracture had been managed by reduction and stabilization with percutaneous lag-screws. Patients who had an isolated condylar fracture or a severely comminuted intercondylar fracture were treated with other types of implants. There were thirty extra-articular (type-A) fractures and seven intra-articular (type-C1 and type-C2) fractures. Postoperatively, early mobilization exercises and weight-bearing were begun. At an average duration of follow-up of 20.5 months (range, fifteen to twenty-six months), all thirty-seven fractures had healed. There were no malunions of either the supracondylar or the intercondylar fractures. Complications were infrequent and included chronic irritation from the distal screws in three patients and delayed union in one; the latter healed with two centimeters of shortening after bone-grafting. There were no infections. The functional results were assessed with the modified knee-rating system of The Hospital for Special Surgery. Thirteen knees (35 per cent) had an excellent result; twenty-two (59 per cent), a good result; and two (5 per cent), a fair result. The results correlated with the age of the patient and the presence of an intra-articular fracture. We concluded that closed interlocking intramedullary nailing is an excellent technique for both supracondylar and simple intercondylar fractures in which closed reduction and percutaneous fixation of the articular fracture is possible.     

交锁髓内钉治疗开放性胫腓骨骨折并发症的原因分析及防治

[目的] 观察交锁髓内钉治疗开放性胫腓骨骨折的并发症的原因及防治措施。[方法]1999年1月～2004年12月用交锁髓内钉治疗开放性胫腓骨骨折120例。男76例，女44例；Gustilo Ⅰ型67例，Ⅱ型47例，Ⅲa型6例；左侧39例，右侧81例；年龄15～78岁，平均34．5岁；Gustilo Ⅰ，Ⅱ型均采用扩髓及静力型固定，Ⅲa型6例均未扩髓。[结果] 120例均得到随访，平均30个月（2个月～5年）。愈合时间12～56周，平均27．4周。术中并发症有髓内钉开口错误3例，术中再骨折4例，小腿软组织损伤4例，锁钉误穿7例，大隐静脉和腓总神经损伤各1例；术后并发症主要有感染8例，膝关节疼痛3例，锁钉断裂4例：主钉断裂1例，骨折迟缓愈合12例，肢体短缩和膝关节内翻各1例。疗效根据Johner-Wruhs标准进行评分，优102例，良16例，差2例，优良率98.3％。[结论] 交锁髓内钉治疗胫腓骨开放性骨折存在一定的并发症，在临床使用中必须引起高度重视；Gustilo Ⅱ以上骨折以不扩髓为宜。     

应用扩髓交锁髓内钉治疗胫骨不稳定性骨折

目的 探讨扩髓交锁髓内钉治疗胫骨不稳定性骨折的治疗效果。方法 对42例胫骨不稳定性骨折患行扩髓交锁髓内钉固定，闭合性骨折22例，开放性骨折20例，均应用静力性固定。结果 平均随访时间12个月，采用Johner—Wruh评分标准，治疗结果：优32例，良8例，一般2例。骨折平均愈合时间：闭合性骨折15周，开放性骨折19周，3例延迟愈合，无深部感染、骨髓炎、畸形愈合及骨不连发生。结论 扩髓交锁髓内钉是治疗胫骨不稳定性骨折较理想的方法，可促进骨折愈合，并发症少。     

带锁髓内钉治疗股骨干粉碎性骨折疗效观察

目的探讨带锁髓内钉治疗股骨干粉碎性骨折的疗效.方法使用带锁髓内钉治疗股骨干粉碎性骨折67例，均取前外侧切口，扩髓、静力型固定.结果67例均获随访，时间6～28（16±8）个月.切口均一期愈合.63例术后4—8个月骨折骨性愈合，4例4个月改为动力型固定，11个月愈合，无其他合并症.膝关节功能按Merchant评分标准评定：优43例，良19例，可4例，差1例，优良率92．5％.结论带锁髓内钉治疗股骨干粉碎性骨折可获得满意疗效．     

交锁髓内钉治疗胫骨骨折

目的 探讨交锁髓内钉治疗胫骨骨折中的治疗效果。方法 对66例胫骨骨折采用交锁髓内钉内固定治疗，闭合性骨折47例，开放性骨折19例。动力型固定16例，静力型变为动力型固定50例。结果 66例随访10～30个月，平均18个月。骨折均愈合，平均愈合时间16周。术后迟发性感染1例，锁钉偏孔7个孔，大隐静脉损伤1例。根据Johner—Wruh评分标准：优47例，良14例，可差1例，总优良率92．43％。结论 交锁髓内钉内固定术是治疗胫骨骨折的一种理想方法，具有创伤小、固定可靠、应力遮挡小、骨折愈合率高、能早期活动等优点。     

逆行交锁髓内钉治疗股骨髁间粉碎性骨折12例

目的探讨股骨逆行交锁髓内钉治疗股骨髁间粉碎性骨折的效果。方法应用股骨逆行交锁髓内钉治疗12例股骨髁间粉碎型骨折,随访全部病例并进行临床效果评定。结果经6~20个月随访,12例骨愈合良好。结论股骨逆行交锁髓内钉具有操作简便、固定牢靠等优点,是治疗股骨髁间粉碎性骨折较理想的内固定器械。     

Percutaneous cerclage wiring followed by intramedullary nailing for subtrochanteric femoral fractures: a technical note with clinical results

Background

Although intramedullary nailing is an ideal treatment for subtrochanteric femoral fractures, it is technically challenging in fractures extending into the nail entry area and/or involving the lesser trochanter. Although the application of circumferential wire may facilitate reduction in these situations, its use remains controversial due to possible blood supply disturbances to underlying bone. In the present study, we evaluated complex subtrochanteric fractures treated by percutaneous cerclage wiring followed by intramedullary (IM) nailing for anatomical fracture reduction and union.

Methods

Twelve patients (mean age 48.3 years) with an unstable subtrochanteric fracture were prospectively treated. Indications of percutaneous cerclage wiring followed by IM nailing were a fracture extending proximally into the nail entry area deemed difficult to treat by anatomical reconstruction by IM nailing or a fracture with long oblique or spiral component. One or two cerclage wires were percutaneously applied for the temporary reduction of main fragments, and then, a cephalo-medullary or a reconstruction nail was fixed. We assessed radiologic results (union time, alignment), functional results, and complications.

Results

All 12 cases healed, without a bone graft, at an average of 19.1 weeks after surgery (range 16–24). In 11 cases, acceptable alignment was achieved (mean, valgus 0.3° extension 0.6°) with minimal leg-length discrepancy; the other exhibited 1 cm of shortening. All patients were able to return to pre-injury activity levels, and median Merle d’Aubigne score was 16.9 (15–18). No infection or implant-related complication was encountered to latest follow-up (minimum 12 months postoperatively).

Conclusion

Temporary reduction by percutaneous wiring offers a means of satisfactory nailing in difficult subtrochanteric femoral fractures, and affords anatomical reconstruction and favorable bony union.     

Fatigue load of current tibial intramedullary nail designs: a simulated study

Comminuted tibial shaft fractures are traditionally treated with statically locked intramedullary nailing and protected weight bearing until fracture callous is evident. The purpose of this study was to demonstrate that a simulation of immediate full weight bearing following intramedullary nailing of these fractures does not result in implant failure.A comminuted fracture model was created using 2 pieces of polyvinyl chloride (PVC) pipe. Ten-millimeter-diameter tibial nails (Synthes, Paoli, Pennsylvania; Styker, Mahwah, New Jersey; Zimmer, Warsaw, Indiana; Smith & Nephew, Memphis, Tennessee) were inserted within the PVC pipe and secured proximally and distally with 2 or 3 locking bolts. The constructs were cycled in axial compression for 500,000 cycles or until implant failure. The tests were conducted using a modified staircase method (200 N per step), and the fatigue strength was identified for each of the tibial nail designs. When 2 interlocking bolts were placed proximally and distally, the fatigue strength was between 900 and 1100 N for the Stryker nail, 1100 and 1300 N for the Zimmer nail, 1200 and 1400 N for the Synthes nail, and 1400 and 1600 N for the Smith & Nephew nail. Adding a third interlocking bolt proximally and distally to the Smith & Nephew nail increased the fatigue strength by 13% to between 1700 and 1900 N. In all cases, implant failures occurred through the proximal or distal interlocking bolts.Biomechanical tests suggest that current tibial nail designs may permit immediate full weight bearing of comminuted tibial shaft fractures with minimal risk of implant failure. This may facilitate mobilization in the early postoperative period, especially in the multiply injured patient.     

Treatment of femoral shaft fractures with the Brooker-Wills interlocking intramedullary nail

Fifty femur fractures were treated with the Brooker-Wills intramedullary locking nail. The indications included subtrochanteric, subisthmal, segmental or comminuted acute fractures or nonunions, and intramedullary shortening procedures. Eighteen technical problems in 13 (26%) patients were encountered during insertion of the nail. The incidence of technical problems was high early in the series and in procedures done with the patient in the supine position. Adverse clinical results from technical errors occurred in two patients. Most technical errors seem avoidable with careful technique. The mean healing time was only 12.1 weeks and there were four nonunions (8%). One patient had a 10 degrees malunion, four patients had 1-2 cm of shortening, and there were two late device fractures. No patients had rotational malalignment or deep infections. The results and complication rate are comparable to those reported for other interlocking systems. The Brooker-Wills nail is useful for treatment of complex femur fractures and has been effective in preventing malrotation, angulation, and excessive shortening.     

交锁髓内钉治疗股骨干粉碎性骨折

目的探讨使用交锁髓内钉治疗股骨干粉碎性骨折的手术方式选择、疗效。方法对1998年1月～2002年10月使用交锁髓内钉治疗67例(76肢)股骨干粉碎性骨折的疗效进行回顾性分析。手术采用闭合、小切口或有限切开复位，用三维瞄准器锁定骨折远近端。结果平均随访14．1个月，肢体、关节功能恢复优良率92．5％(62／67)，一期骨折愈合率90．8％(69／76)。平均骨临床愈合时问6．7个月。2例软组织感染，感染率2．6％，2例髓内钉断裂。结论交锁髓内钉治疗股骨干粉碎性骨折应常规静力固定，不剥离或少剥离骨膜．不强求解剖复位，尽量闭合复位、有限扩髓，是目前治疗股骨干粉碎性或多节段骨折的有效方法。     

The functional results of tibial shaft fractures treated with intramedullary nail compressed by proximal tube

Nailing of tibial shaft fractures is considered the gold standard surgical method by many surgeons. The aim of this retrospective study was to investigate and compare the clinical outcome of tibial shaft fractures treated with intramedullary nails compressed by proximal tube and conventional intramedullary interlocking nails. Fifty-seven patients with tibial shaft fractures, treated with intramedullary nails compressed by proximal tube (n = 32) and the conventional interlocking nails (n = 25), were reviewed. All fractures except for one were united without any additional surgical intervention in the proximal compression tube nail group, whereas in the conventional interlocking nail group, six patients needed dynamization surgery (p = 0.005) and three cases of nonunion were recorded. In the proximal compression tube nail group, faster union occurred in 20 ± 2 (16–24) weeks (mean ± SD; range) without failure of locking screws and proximal nail migration, whereas in the conventional interlocking nail group, union occurred in 22 ± 2.5 (17–27) weeks (p = 0.001) with two failures of locking screws and two proximal nail migration. The proximal compression tube nail system is safer than the conventional nailing methods for the treatment for transverse and oblique tibial shaft fractures with a less rate of nonunion, proximal locking screw failure and proximal nail migration.     

非扩髓的交锁髓内钉治疗胫骨骨折

目的 :评估非扩髓的交锁髓内钉治疗胫腓骨骨折的疗效。方法 :应用非扩髓的交锁髓内钉治疗胫腓骨骨折 2 8例 ,开放性骨折 11例 ,闭合性骨折 17例。结果 :按Johner Wruh评分标准 ,优 2 3例 ,良 4例 ,可 1例。平均随访 13个月 ,平均愈合时间 14周 ,无主钉弯曲、断裂和锁钉断裂现象 ,无感染。骨折全部愈合。结论 :非扩髓的交锁髓内钉在治疗胫腓骨骨折中具有创伤小、固定确实、感染率低、骨折愈合率高等优点 ,是治疗胫腓骨骨折的首选方法。     

Self-guiding interlocking intramedullary nail

A critical step in closed interlocking intramedullary nailing is the insertion of the proximal and distal screws under fluoroscopic control. An intramedullary nailing system is described that does not require the use of direct fluoroscopic control for distal screw insertion. With the SG interlocking intramedullary nail, the location and fixation of the distal screw is achieved by keying in on a transversely placed guide pin, with imaging required only to confirm the alignment and final placement of the instrumentation.     

Treatment of nonunions of humeral fractures with inter-locking intramedullary nailing

Objective： To introduce the experience of treating nonunions of humeral fractures with interlocking intramedullary nailing.
Methods： Twelve patients with humeral nonunions were treated with interlocking intramedullary nailing. The time interval between trauma and surgery was 10.5 months on average. Open reduction with anterograde approach was performed. Axial compression was specially applied to the fracture site with humeral nail holder after insertion of distal locked screws. Iliac bone grafting was added.
Results： The average follow-up period was 21 months （ranging 9-51 months）. All patients achieved osseous union 5.8 months after treatment on average. Eleven patients hadgood functions of the shoulder joints and the upper extremities. No patient experienced any permanent neurological deficit. Refracture of the original ununited region occurred in one patient after removal of the internal fixator one year later, but union was achieved after closed re-intramedullary nailing fixation.
Conclusion： Humeral interlocking intramedullary nailing is an effective alternative treatment for humeral nonunion.