短缩-延长肢体治疗胫骨骨缺损合并软组织缺损

目的探索单纯使用Orthofix重建外固定架通过短缩一延长肢体治疗胫骨骨缺损合并软组织缺损的可行性。方法2001年7月～2006年7月收治胫骨骨缺损合并软组织缺损患者39例，其中37例为胫骨感染性骨折不愈合，2例为胫骨开放性骨折（GustiloⅢB型1例，Gustilo ⅢC型1例）。在患肢上安放Orthofix重建外固定架。清创术后小腿胫前内侧软组织平均缺损12cm（6～24cm），胫骨骨缺损平均9cm（4～22cm）。对胫骨骨缺损〈5cm的患者使用一期清创．腓骨截骨．胫骨缺损端加压。对22例胫骨缺损〉5cm的患者采用清创，腓骨截骨．短缩肢体〈5cm。对炎症局限、胫骨截骨部皮肤正常而且远离伤口的患者同期行胫骨截骨术，否则于1．0～1．5个月后二期行胫骨截骨术延长恢复肢体的长度。结果所有患者平均随访14个月（10～44个月）。骨缺损均得以重建，患肢肢体长度与健侧之差小于5mm，骨折愈合，无感染复发，创面均闭合。1例术后出现腓总神经麻痹，术后2个月恢复。4例胫骨缺损患者诉膝部疼痛。5例胫骨蠓损患者出现马蹄内翻足。2例胫骨缺损出现下胫腓分离。1例再骨折。结论使用Orthofix重建外固定架进行短缩．延长肢体是治疗胫骨骨缺损合并软组织缺损的有效方法，但应谨慎使用。对于软组织缺损少的小腿一期短缩的安全限度为3cm，最终短缩6cm。对于软组织缺损较大的急性胫骨开放骨折小腿一期可以短缩9cm。     

应用加压延长骨迁移技术治疗长骨缺损或短缩畸形

目的总结应用Orthofix肢体重建延长系统（LRS）治疗长骨大段骨缺损与短缩畸形的临床体会。方法10例长骨．大段缺损，平均6．6cm，其中胫骨8例、股骨1例及桡骨1例（伴短缩畸形），均为陈旧性损伤。选择患肢合适的部位进行截骨，用Orthofix LRS固定，于术后第6天开始每天延长1mm，直至延长到所需长度，继续固定患肢直到骨愈合。结果本组均获2年以上随访，骨延长最长为15cm，最短3cm；9例未经植骨达到骨性愈合，1例在延长中因两端不能完全对合，采用有限切开及植骨，术后也得到骨性愈合。结论应用Orthofix LRS系统，能安全有效地治疗肢体骨缺损和／或短缩畸形。     

单边外固定架骨段滑移术治疗部分骨缺损

  目的 探索使用单边外固定架骨段滑移术治疗部分骨缺损的可行性。方法 回顾性分析2008年12月至2009年7月治疗的3例部分骨缺损患者的病例,男2例,女1例;年龄分别为50、50、24岁。左胫骨近段内侧骨缺损2例,其中1例骨缺损长5 cm,宽占该区直径1/3~2/3,合并宽5 cm、长3 cm皮肤缺损;另1例骨缺损,长6 cm,宽3 cm;1例右股骨远段外侧骨缺损,长13 cm,宽占全部周径的1/3~2/3,骨面为贴骨瘢痕,长15 cm,宽7 cm。彻底清创后,安装Orthofix公司肢体重建系统;自胫骨缺损远侧缘起向远侧,沿胫骨前方取一10 cm长纵行切口,采用多孔技术行截骨术。术后第14天开始牵拉骨质,速度为1 mm/d, 4次/d。结果 3例患者随访时间分别为14、28、24个月。2例胫骨缺损患者分别在截骨术后8个月和6个月影像学检查示新生骨形成良好,被滑移骨段与宿主骨愈合,故去除外固定架,患侧髋、膝和踝关节活动范围同健侧。股骨缺损患者截骨术后因调错牵开器方向,骨段滑移术不成功;2个月后再次实施截骨及骨段滑移术,术后10个月新生骨形成良好,拆除外固定架;术后17个月患者可独自站立和持手杖行走,膝关节僵直于中立位,无感染及复发。结论 使用单边外固定架行骨段滑移术可治疗部分骨缺损;该方法具有肢体畸形发生率低,外固定架带架时间短及避免供区损伤等优点。     

不同骨延长器治疗肢体畸形并大段骨缺损

[目的]利用Ilizarov支架、Orthofix肢体重建系统（Orthofix LRS）及Hybrid固定系统（Hybrid Fixation System）与Orthofix LRS的组合，对不同的肢体畸形并大段骨缺损进行矫形及骨延长治疗，同时观察其疗效。[方法]自2000年8月-2004年3月分别用Ilizarov支架、Orthofix LRS及Hybrid支架与Orthofix LRS的组合进行骨痂牵开／骨段滑移治疗合并肢体畸形的大段骨缺损。畸形处采用线形／楔形截骨。畸形愈合并骨短缩者楔形截骨后进行骨痂牵开骨延长术，骨不连并畸形及短缩者接合点加压与截骨矫形骨段滑移延长同时进行。[结果]矫正股骨短缩畸形7cm1例，胫骨6例，内翻畸形2例，后成角畸形2例，混合畸形2例。平均延长5．3cm（4．5—7cm），平均延长时间3．5个月，平均延长后外固定时间7个月，无神经血管损伤，膝踝关节活动未受影响。[结论]Ilizarov支架、Orthofix LRS、Hybrid固定系统与Orthofix LRS的组合用于骨痂牵开／骨段滑移治疗合并肢体畸形的大段骨缺损均能达到矫形及骨延长的治疗目的。Orthofix LRS及Hybrid固定系统与Orthofix LRS的组合较Ilizarov支架操作简便，安全可靠，患者乐于接受。     

外固定架结合髓内钉延长术治疗股骨缺损和不等长

目的探讨联合应用髓内钉及外固定架治疗股骨缺损和不等长的方法和疗效。方法2001年1月～2003年12月联合应用髓内钉及外固定架治疗2例股骨缺损分别为8 cm和11 cm的患者、3例股骨短缩为4～7 cm的患者。手术于股骨内顺行置入带锁髓内钉(或保留原有髓内钉),带锁髓内钉仅锁定一端,安装外固定架。4例于股骨近段截骨,1例于股骨远段截骨。5例患者中2例使用Ilizarov重建外固定架,3例使用Orthofix重建外固定架。术后平均延迟16．2 d(13～24 d)后开始牵开延长,1mm/d,共分4次完成。对于股骨短缩患者,当股骨达到预期延长长度后再次手术将髓内钉远端锁定,然后去除外固定架,开始早期功能锻炼。对于骨缺损患者,当股骨达到预期延长长度后仍须等待新生骨痂密度有所增加后将髓内钉远端锁定并去除外固定架。结果5例患者获平均36．4个月(22～47个月)随访,平均延长长度为7．2 cm (4～10 cm),外固定架放置时间平均为5个月(3～8个月),外固定架指数平均为0．75个月/cm(0．57～1．00个月/cm)。所有患者股骨延长段未出现轴向偏移或再骨折,坚实化良好。最后随访时,5例患者膝关节活动度平均为107°(80°～135°)。结论联合应用髓内钉及外固定架肢体延长术能够明显缩短外固定架置放时间,避免肢体畸形,有利于膝关节早期功能恢复,在治疗大段骨缺损及肢体不等长中具有一定优势。手术时间长、术中出血多、治疗费用高和手术切口瘢痕增加是其缺点。     

骨段滑移术治疗胫骨缺损合并软组织缺损

目的 探讨骨段滑移术治疗胫骨骨缺损合并小腿软组织缺损的疗效.方法 自2001年7月至2006年7月,共收治胫骨骨缺损合并小腿软组织缺损的患者57例.男42例,女15例;年龄15～52岁,平均34岁.57例胫骨缺损长度为5～20 cm(平均11 cm),小腿前内侧皮肤缺损5 cm×4 cm～20 cm×8cm.对12例行一期胫骨截骨术,其余45例行二期截骨术.截骨术后10～14 d开始延长,每日延长1 mm.在胫骨远,近缺损骨端相遇后,对对合良好者加压以促进愈合,对缺损骨端之间对合不好、皮肤内陷、骨不愈合和(或)感染者行复位、清创或自体骨植骨术.结果 从开始治疗到去除外固定架,平均治疗用时21(11～32)个月.56例胫骨缺损得以重建,患肢肢体长度与健侧相差<4mm.1例新生骨部分成骨不良,行自体骨植骨术.创面均得到覆盖,仅2例要求接受瘢痕皮肤修整术.15例(26%)患者骨缺损接触端自行愈合,1例长期存在一个窦道,清创术后随访半年感染无复发,窦道愈合.骨段滑移过程中4例患者主诉膝部疼痛,11例主诉小腿疼痛.6例患者出现马蹄内翻足.5例出现轻度屈膝畸形,经功能锻炼4例恢复,1例屈膝10°.结论 骨段滑移术是治疗胫骨骨缺损合并软组织缺损的有效方法,其疗效满意.     

Ilizarov外固定架治疗胫骨骨缺损及骨短缩

目的探讨应用Ilizarov外固定架治疗胫骨骨不连及骨缺损的方法及临床疗效。方法对19例胫骨骨不连及骨短缩患者（肢体短缩4~17cm,平均9cm）,根据Iuizarov治疗原则,采用微创截骨、直接拉伸延长或骨段滑移术修复骨缺损和延长肢体,在连续硬膜外麻醉下手术置入外固定架。骨不连者调整外固定架使骨断端对合并加压;骨缺损短缩者则做骨段搬移术或直接拉长。定期复查X片,直至骨愈合满意后拆除外固定架。结果本组术后经1～5年随访。所有骨缺损愈合,肢体长度恢复正常或接近正常,感染无复发。结论Ilizalov外固定架技术是治疗胫骨大段骨缺损的有效方法。软组织感染创面可在骨段滑移中逐渐缩小并闭合,骨感染可在骨段滑移中逐渐被控制并随骨连接而愈合。     

Orthofix单边外固定架在骨肿瘤外科治疗中的应用

目的探讨Orthofix单边外固定架在骨肿瘤外科治疗中的应用特点及初步临床效果。方法回顾分析2011年6月—2016年3月因原发良、恶性骨肿瘤接受外科治疗并应用Orthofix单边外固定架的22例患者临床资料。男11例,女11例;年龄4~57岁,中位年龄23.5岁。肿瘤切除后骨缺损或肢体短缩部位:股骨上段6例,股骨下段8例,股骨中段3例,胫骨上段2例,胫骨中段3例。外固定架应用情况:骨缺损重建后临时固定10例(骨缺损长度6~19 cm,平均12.3 cm;采用带血管蒂腓骨移植2例,同种异体骨+游离腓骨移植2例,同种异体骨+自体骨移植5例,同种异体骨重建1例);肢体短缩行骨延长5例(短缩长度6.5~8.5 cm,平均7.5 cm);3例术前活检无法明确诊断,行切开活检,为预防病理骨折临时采用外固定架固定;肿瘤切除后骨缺损应用骨搬运1例(骨缺损长度7.5 cm);病理骨折术前化疗临时固定1例;股骨远端骨肉瘤行海扶刀治疗后,膝关节严重屈曲畸形伴关节脱位矫形2例。结果 22例患者均获随访,随访时间12~72个月,平均36个月。10例骨缺损重建患者带架时间3~8个月,平均4.8个月;均获满意骨愈合,愈合时间3~16个月,平均6.4个月;末次随访时国际保肢学会功能评分93版(MSTS 93)评分为73.3~93.3分,平均87.2分;患者佩戴外固定架期间未出现并发症。5例骨延长患者带架时间7~15个月;2例延长过程中出现成角畸形,2例拆架后出现青枝骨折,CheckettsOtterburn外固定架钉道感染分级为轻度感染1级2例,2级1例;MSTS 93评分为80.0~96.7分,平均89.2分。其余患者均无相关并发症发生,膝关节及踝关节活动正常。结论 Orthofix单边外固定架可用于骨肿瘤切除后复杂缺损的固定,并可通过骨延长纠正儿童保肢术后肢体不等长问题。     

Ilizarov技术一期短缩延长术治疗感染性大段骨缺损

[目的]探讨应用Ilizarov技术一期短缩延长术治疗感染性大段骨缺损的方法及临床疗效。[方法]2000~2013年13年间,应用Ilizarov技术一期短缩延长术治疗下肢大段感染性骨缺损60例。男42例,女18例;治疗时年龄:最小6岁,最大52岁,平均34岁。股骨20例,胫骨40例,合并足下垂30例。骨缺损长度7~9 cm 16例,9~12 cm 18例,12 cm以上26例,最长缺损25 cm。治疗时仍有感染的42例,股骨15例,胫骨27例;感染静止18例。治疗过程:彻底切除感染病灶,从切除骨端清除髓腔内炎症肉芽组织,骨髓腔内及残存髓腔内放置川嶌式持续洗净管,生理盐水加敏感抗生素洗净,安装Ilizarov环形外固定架,一期尽可能加压短缩使两断端接合;如缺损范围过长或软组织臃肿,一期不能完成加压短缩对接,术后缓慢加压短缩,直到两断端对接。骨干骺端皮质骨截骨,截骨后2周开始延长,每日延长0.5~1 mm,分4~6次进行,直到两下肢等长。对接点部分骨缺损,股骨12例,胫骨26例,经再次补充植骨16例,碎骨术8例,骨断端愈合及延长段骨皮质化完成后,拆除外固定。[结果]炎症全部治愈。股骨20例全部对接点愈合,两下肢等长;13例膝关节僵硬,7例能部分屈伸,1例合并髋内翻。胫骨40例,38例两下肢等长,2例下肢短缩1 cm,自感满意。足下垂30例同时矫正27例,2例部分矫正,1例出院时尚未矫正。[结论]Ilizarov技术一期短缩延长术是治疗大段感染性骨缺损肯定有效的方法,值得普及推广。     

抗生素骨水泥联合Ilizarov技术在长骨感染性骨缺损治疗中的应用

目的探讨抗生素骨水泥联合Ilizarov技术个性化治疗长骨感染性骨缺损的方法和临床疗效。方法自2011年6月至2017年1月,我院应用Ilizarov技术个性化治疗股骨、胫骨、肱骨骨折术后感染性骨缺损21例,男14例,女7例;年龄18～65岁,平均37岁。其中胫骨骨缺损12例,清创后骨缺损范围平均7.2cm;股骨骨缺损7例,清创后骨缺损范围平均8.5cm;肱骨骨缺损2例,清创后骨缺损范围平均6cm。手术分两期进行:一期彻底清创,植入含敏感抗生素骨水泥,采用单边或环形外固定架固定,预留截骨延长的外固定架长度,控制感染;二期感染消灭后,根据Ilizarov技术进行截骨延长。结果所有患者术后随访12～24个月,平均18.5个月。外固定架固定时间9～21个月,平均17.2个月。外固定架指数(external fixation index,EFI)平均为2.38个月/cm。采用伊里扎洛夫方法研究与应用学会(association for the study and application of the method of Ilizarov,ASAMI)评价标准评价,骨性结果:优13例,良6例,中2例,优良率为90.5%;功能结果:优11例,良7例,中3例,优良率为85.7%。结论抗生素骨水泥联合Ilizarov技术可有效控制感染,纠正患肢畸形,重建肢体的功能,是治疗长骨感染性骨缺损的有效方法。     

改良Illizarov技术治疗下肢感染性骨缺损

目的研究改良Illizarov技术治疗下肢感染性骨缺损和肢体短缩的方法。方法感染性骨缺损患者23例,男20例,女3例;年龄21~49岁,平均32岁。股骨7例,胫骨16例。肢体短缩4~17cm,平均9cm。根据Illizarov治疗原则,采用微创截骨,分别采用骨段滑移术修复骨缺损和延长肢体。结果经骨段滑移,骨缺损全部愈合,延长间隙成骨良好,无一例需补充植骨。23例经1~5年随访,所有骨缺损愈合,肢体长度恢复正常,感染无复发。结论骨段滑移技术是治疗下肢大段骨缺损简单而有效的方法,软组织感染创面可在骨段滑移中逐渐缩小并闭合,骨感染可在骨段滑移中逐渐被控制并随骨连接而愈合。     

一期短缩二期延长治疗下肢GustiloⅢC型开放性骨折的疗效分析

目的探讨一期短缩二期延长治疗下肢GustiloⅢC型开放性骨折的疗效。方法回顾性分析武汉市第四医院骨科2010年1月至2018年1月急诊收治的12例下肢GustiloⅢC型开放性骨折的患者资料,男8例,女4例;年龄22~67岁,平均41.2岁。所有患者均伴有骨与皮肤软组织缺损,合并下肢神经、血管损伤。软组织缺损面积4 cm×2 cm~17 cm×12 cm;主干血管清创后短缩1.2~8.3 cm,平均4.2 cm;神经断端清创后短缩1.0~8.1 cm,平均4.0 cm;胫骨干缺损长度2.0~9.6 cm,平均6.3 cm。所有患者均急诊一期彻底清创,骨折处短缩外固定支架固定行骨搬运。记录骨延长牵张速度、带架时间及并发症情况,末次随访时根据Paley评分标准评定下肢功能。结果12例患者术后获14~32个月(平均19.1个月)随访,12例患者肢体均存活且未发生严重感染。12例患者肢体短缩长度2.0~8.2 cm(平均3.6 cm)。骨搬运速度平均0.87 mm/d;带架时间11~16个月(平均13.2个月)。所有患者骨愈合时间10~14个月(平均11.2个月)。7例患者术后马蹄内翻畸形,2例出现Dahl分级3级以下的针道感染。末次随访时根据Paley评分标准评定下肢功能:优8例,良3例,可1例。结论一期短缩二期利用外固定技术行肢体延长及骨搬运治疗,降低了下肢GustiloⅢC型开放性骨折的保肢风险及手术难度,临床效果良好。     

Limb lengthening in children with osteogenesis imperfecta]

The authors operated on 7 children (5 girls, 2 boys) suffering from osteogenesis imperfecta (oi) type I according to Sillence classification, with lower limbs discrepancy. We elongated 10 segments (7 femurs and 3 tibias). Mean age at operation time was 14.7 years (13-17 years). The mean leg length discrepancy was 9.3 cm (4-18 cm), and shortening of one bone was 6.5 cm (4-9 cm). We used Ilizarov technique twice in tibial lengthening. We used Wagner technique in one tibial elongation and in 7 femur elongation. Except for one tibia, in the remaining cases there was Rush rod inserted intramedullary in the bone being elongated. During tibial elongation we fixed lateral malleous by screw. The osteotomy was performed in proximal metaphysis of the 5 femurs and 3 tibias, and in distal femurs in two cases. The elongation was 1 mm for day, with frequency 4 x 1/4 mm. The mean bone lengthening achieved was 5.5 cm (2-9 cm); the mean lengthening of the limb was 7.9 cm (2-18 cm). The mean time of elongation was 2.8 months (2-5 months). Elongation index was 26 days for 1 cm of lengthening. The mean time of fixator removal was 9.2 months (4-13 months). Healing index was 58 day/1 cm (overall number of days for 1 cm lengthening). The complications occurred in all the patients. Although the risk of numerous complication is high, lower limbs lengthening in children with type I osteogeneis imperfecta is possible to perform and allows equalizing discrepant limbs or, at least reducing the difference.     

骨搬移术治疗胫骨骨折术后感染性大段骨缺损的疗效分析

背景：胫骨骨折术后感染性大段骨缺损的发生率高,治疗困难,效果不理想。目前,骨缺损修复方法包括皮瓣覆盖＋自体骨移植术、异体骨或异种骨移植、带血供腓骨移植、骨延长和骨搬移术。目的：探讨骨搬移术治疗胫骨骨折术后感染性大段骨缺损的疗效。方法：选取2010年9月至2014年9月收治的胫骨骨折术后感染性大段骨缺损患者40例,男24例,女16例;年龄18~64岁,平均（42.8±12.1）岁。将患者随机分成两组各20例,一组采用Orthofix单臂外固定延长架截骨延长,另一组采用Ilizarov环形外固定延长架截骨延长,术后随访对比两组患者的手术时间、手术出血量、HHS膝关节功能评分、Baird-Jackson踝关节功能评分。结果：Orthofix单臂外固定延长架的手术时间较短、手术出血量较少,与Ilizarov环形外固定延长架比较均有统计学差异（P〈0.05）。两组患者的术后HHS膝关节功能评分、Baird-Jackson踝关节功能评分均较术前有明显提高（P〈0.01）。结论：骨搬移术治疗胫骨骨折术后感染性大段骨缺损的疗效佳,可较好地改善患者的膝关节和踝关节功能。其中Orthofix单臂外固定延长架能减少手术创伤,安全性较高,但骨搬运过程中容易发生延长骨成角和偏移;Ilizarov环形外固定延长架的术中应用置入较多钢针,移动时可造成部分皮瓣坏死和血管损伤,应避免在皮瓣覆盖创面的胫骨大段骨缺损患者中使用。     

Treatment of tibial defect and bone nonunion with limb shortening with external fixator and reconstituted bone xenograft

Objective: To explore the effect of external fixator and reconstituted bone xenograft (RBX) in the treatment of tibial bone defect, tibial bone nonunion and congenital pseudarthrosis of the tibia with limb shortening. Methods : Twenty patients ( 13 males and 7 females)with tibial bone defect, tibial bone nonunion or congenital pseudarthrosis of the tibia with limb shortening were treated with external fixation, Two kinds of external fixators were used: a half ring sulcated external fixator used in 13 patients and a combined external fixator in 7 patients.Foot-drop was corrected at the same time with external fixation in 4 patients. The shortened length of the tibia was in the range of 2-9 cm, with an average of 4.8 cm. For bone grafting, RBX was used in 12 patients, autogenous ilium was used in 3 patients and autogenous fibula was implanted as a bone plug into the medullary canal in 1 case,and no bone graft was used in 4 patients. Results: All the 20 patients were followed-up for 8 months to 7 years, averaging 51 months. Satisfactory function of the affected extremities was obtained. All the shortened extremities were lengthened to the expected length. For all the lengthening area and the fracture sites,bone union was obtained at the last. The average healing time of 12 patients treated with RBX was 4.8 months. Conclusions: Both the half ring sulcated external fixator and the combined external fixator have the advantages of small trauma, simple operation, elastic fixation without stress shielding and non-limitation from local soft tissue conditions, and there is satisfactory functional recovery of affected extremities in the treatment of tibial bone defects, tibial bone nonunion and congenital pseudarthrosis of the tibia combined with limb shortening.RBX has good biocompatibility and does not cause immunological rejections. It can also be safely used in treatment of bone nonunion and has reliable effect to promote bone healing.     

Ilizarov treatment of tibial nonunions with bone loss

Twenty-five patients aged 19-62 years were treated for tibial nonunions (22 atrophic, three hypertrophic) with bone loss (1-23 cm, mean 6.2 cm) by the Ilizarov technique and fixator. Thirteen had chronic osteomyelitis, 19 had a limb-length discrepancy (2-11 cm), 12 had a bony defect (1-16 cm), and 13 had a deformity. Six had a bone defect with no shortening, 13 had shortening with no defect, and six had both a bone defect and shortening. Nonunion, bone defects, limb shortening, and deformity can all be addressed simultaneously with the Ilizarov apparatus. Bone defects were closed from within without bone grafts by the Ilizarov bone transport technique of sliding a bone fragment internally, producing distraction osteogenesis behind it until the defect is bridged (internal lengthening). Length was reestablished by distraction of a percutaneous corticotomy or through compression and subsequent distraction of the pseudarthrosis site (external lengthening). Distraction osteogenesis resulting from both processes obviated the need for a bone graft in every case. Deformity was corrected by means of hinges on the apparatus. Infection was treated by radical resection of the necrotic bone and internal lengthening to regenerate the excised bone. Union was achieved in all cases. The mean time to union was 13.6 months, but it was only 10.6 months if the time taken for unsuccessful compression-distraction of the nonunion is eliminated from the calculation. The bone results were excellent in 18 cases, good in five, and fair in two based on union in all cases, persistent infection in three, deformity in four, and limb shortening in one. The functional results were excellent in 16 cases, good in seven, fair in one, and poor in one based on return to work and daily activities in all cases, limp in four cases, equinus deformity in five cases, dystrophy in four cases, pain in four cases, and voluntary amputation for neurogenic pain in one case.     

Ilizarov bone transport after massive tibial trauma: Case report

IntroductionThis is a case report of extreme lengthening of the tibia of about 14.5 cm using bone transport technique following road traffic accident trauma to the lower limbs. The management of the subsequent massive skeletal defects was challenging to orthopedic surgeons. Based on reported cases, the highest tibial lengthening was 22 cm using bifocal transport, while the highest unifocal tibial lengthening reached 14.5 cm.Case presentationA 20-year-old male driver was brought to the emergency department after a road traffic accident. The patient had a right Gustilo IIIA segmental open tibia fracture with bone loss and other severe injuries. The tibial defect was 14.5 cm and the patient was then admitted for Ilizarov application six months after the accident. Although this case was particularly complicated, full limb length was restored.DiscussionThe management of this case was directed to correct the deformities and achieve equal length of both limbs to restore the normal function. Several new techniques have been developed recently to fill large bone defects. Limb lengthening using bone transport technique by application of Ilizarov ring fixator has been suggested as the leading option in filling massive bone gaps.ConclusionThe use of bone transport technique using Ilizarov external rings has proved to be a minimally invasive and reliable method in managing massive bone defects. Accurate application of the Ilizarov frame and proper transport of the middle segment are important factors alleviating the risk for deviation of the transported segment. However, due to the need for regular follow-ups and monitoring, it demands high compliance from the patient to achieve optimal results.     

外固定技术治疗骨折内固定术后难治性骨不连并骨缺损

目的 探讨外固定技术不植骨治疗骨折内固定术后难治性骨不连并骨缺损的临床疗效.方法 自2002年4月至2008年12月收治17例骨折内固定术后难治性骨不连及骨缺损患者,男12例,女5例;年龄ll～50岁,平均34.7岁.骨不连部位:胫骨10例,股骨5例,肱骨2例;骨不连时间8～21个月,平均16.3个月;既往接受手术次数1～3次,平均1.6次;骨缺损长度2.5～11.0 cm,平均3.5 cm.采用短缩加压结合延长和骨节段延长转位两种外固定基本方法治疗,观察骨折愈合及伤肢功能情况.结果 17例骨不连均骨性愈合,愈合时间3～21个月,平均5.2个月.12例伴有肢体短缩的骨不连并骨缺损患者同期或二期重建了肢体长度,达到了肢体长度均衡,平均骨延长4.8 cm,愈合时间4～11个月,平均5.2个月,骨愈合指数平均32 d/cm.结论 采用外固定技术治疗难治性骨不连并骨缺损,其弹性固定有利于骨折愈合,干骺端截骨延长有效重建了肢体长度,达到了肢体长度平衡并可早期下地活动,可视为一种疗效确切的微创生物学治疗技术.