切开复位克氏针结合跟骨重建钢板内固定＋植骨术治疗跟骨骨折

目的探讨切开复位克氏针结合跟骨重建钢板内固定植骨术治疗跟骨关节内骨折的疗效。方法对38例（38足）SandersⅢ型、Ⅳ型跟骨骨折均采用切开复位克氏针结合跟骨重建钢板内固定＋植骨术治疗,术中克氏针维持塌陷的关节面复位,跟骨外侧缘放置重建钢板和植骨,术后测量Bhler角和Gissane角,评价跟骨骨折的复位情况。结果患者均无感染和皮肤坏死,复查X线片提示Bhler角和Gissane角分别为24°～42°和98°～137°,骨折均达骨性愈合,愈合时间10～16（13±3）周,按Maryland足部评分系统评价术后功能：优26足,良10足,差2足,优良率94.7%。结论采用切开复位克氏针结合跟骨重建钢板内固定＋植骨术治疗SandersⅢ型、Ⅳ型跟骨骨折手术方法简单,疗效满意。     

切开复位内固定与植骨术治疗跟骨关节内骨折移位

目的探讨跟骨关节内骨折并脱位的分类与治疗方法. 方法本研究包括 8例患者、 12侧跟骨关节.按照 Sanders系统分类;其中Ⅱ型骨折 2侧,Ⅲ型 4侧,Ⅳ型 6侧.采用切开复位内固定并植骨术,手术切口取标准外侧延长切口,骨折块采用小 AO桥形钢丝板固定,植骨材料采用病人自体髂骨.平均随访时间为 28.6个月( 24～ 33个月),采用 Creighton-Nebraska健康基金会跟骨骨折评分标准评分. 结果Ⅱ型骨折 89.7分,Ⅲ型 86.5分,Ⅳ型 73.5分.切开复位内固定术治疗跟骨骨折较非手术治疗有显著差异 (P< 0.05),在Ⅱ、Ⅲ型骨折中,术中采用植骨与否,无显著差异 (P >0.05);而在Ⅳ型骨折中,则有显著差异 (P< 0.05). 结论跟骨关节内骨折并脱位宜采用切开复位内固定术,在Ⅳ型骨折中,宜采用植骨术;此有利于早期负重及避免距下关节面塌陷. Sanders'分类系统对临床治疗具有指导意义.     

跟骨骨折近期疗效观察及体会(38例42足报告)

[目的]探讨切开复位跟骨锁定钢板内固定治疗跟骨关节内移位骨折的疗效.[方法]自2008年6月～2012年4月年本院使用钛质跟骨锁定钢板内固定治疗SandersⅡ、Ⅲ、Ⅳ型38例42足跟骨关节内骨折.所有患者均为闭合性骨折,术前及术后测量B(o)hler角和Gissane角,评价跟骨骨折的复位情况,足部功能按Maryland足部评分系统评分.[结果]所有患者均获得随访,随访时间8～24个月,平均12.6个月.骨折全部愈合,功能良好.足部功能按Maryland足部评分系统评分,SandersⅡ型优良率为95.2％,SandersⅢ型中优良率为80.0％,SandersⅣ型中优良率为66.7％,术前及术后测量跟骨B(o)hler角和Gissane角,并行t检验,有统计学差异.[结论]采用切开复位跟骨锁定钢板内固定是治疗跟骨SandersⅡ、Ⅲ型及Ⅳ型骨折的一种有效方法,疗效满意.     

跟骨陈旧性关节内骨折的二期手术治疗

目的评价跟骨钢板内固定二期治疗跟骨关节内骨折的临床疗效。方法33例陈旧性跟骨关节内骨折按Sanders分型:Ⅱ型7例,Ⅲ型15例,Ⅳ型11例。SandersⅡ、Ⅲ型跟骨骨折采用保留距下关节跟骨截骨矫形,SandersⅣ型骨折采用距下关节撑开植骨的距下关节融合术。选择改良L形切口,劈除外膨的跟骨外侧壁,松解腓骨肌腱。跟骨内骨缺损采用自体骨植骨。结果所有患者平均随访19.8个月(6～48个月),按Maryland足部评分标准评价术后功能,总体优良率81.8%。结论跟骨关节内骨折如一期皮肤等条件不允许情况下,二期SandersⅡ、Ⅲ型跟骨骨折采用保留距下关节跟骨截骨矫形,SandersⅣ型距下关节撑开植骨的距下关节融合治疗不失是一种可靠的办法。     

切开复位内固定与植骨治疗跟骨关节内移位骨折

目的:评估切开复位内固定及植骨治疗跟骨关节内移位骨折的临床效果。方法:35例41足跟骨关节内移位骨折,其中男29例,女6例;年龄16-57岁,平均33.1岁;左足18例,右足11例,双足6例。X线片示:Bhler角0°-15°者19足,<0°者22足。按Sanders分类:Ⅱ型14足,Ⅲ型23足,Ⅳ型4足。并行切开复位普通跟骨接骨板内固定及植骨术。结果:41足经平均18个月随访,按Maryland足部评分系统评估手术疗效,其中优(90-100分)31足,良(75-89分)7足,可(50-74分)2足,差(<50分)1足,优良率为92.7%(38/41)。结论:跟骨关节内移位骨折行切开复位内固定术可取得良好临床疗效,植骨术有利于早期负重及避免距下关节面的塌陷。     

切开复位内固定植骨与不植骨治疗移位型跟骨关节内骨折的Meta分析

目的比较切开复位内固定植骨与不植骨治疗移位型跟骨关节内骨折的临床疗效。方法使用计算机检索Pub Med、Embase、Conchrane Libray数据库中关于移位型跟骨关节内骨折采用切开复位内固定植骨与不植骨治疗的随机对照试验或病例对照研究。检索时间限定为建库至2017-04,同时查阅所获取的参考文献索引。分别由2位研究员单独进行质量评价及数据提取。主要评价指标:术后足功能优良率(AOFAS踝与后足功能评分,Maryland足部功能评分)、Bohler角、Gissane角、跟骨高度及简明健康调查量表(SF-36)评分。次要评价指标:术后切口感染、切口坏死及裂开、骨性关节炎。结果纳入定性及定量合成文献共7篇,2组共824例,植骨组399例。Meta分析表明:末次随访2组术后足功能优良率、Bohler角、Gissane角、跟骨高度、术后切口坏死或裂开、切口感染及骨性关节炎比较差异无统计学意义(P0.05);植骨组SF-36评分优于不植骨组,差异有统计学意义(P0.05)。结论结合Meta分析结果 ,加之植骨导致自体植骨者供区术后的疼痛,因此,对于移位型跟骨关节内骨折,植骨不是必要的。     

植骨联合可塑形钛板内固定治疗跟骨关节内骨折

目的 总结切开复位植骨联合可塑形钛板内固定治疗跟骨关节内骨折的手术方法和临床疗效.方法 2005年1月-2007年12月,采用切开复位、自体髂骨(30～80 g)植骨、可塑形钛板内固定治疗跟骨关节内骨折32例37足.其中男21例,女11例:年龄18～56岁,平均41.2岁.双足5例,单足27例.开放性骨折2例,闭合性骨折30例.根据Sanders分型标准:Ⅱ型11足,Ⅲ型18足,Ⅳ型8足.术前Bohler角(-9.6±4.2)°,Gissane角(101.4±10.6)°.其中9足行急诊手术,28足于伤后5～7 d手术.结果 术后34足伤口Ⅰ期愈合;3足伤口皮缘灰白伴少量无色渗液,经换药后延迟愈合.32例均获随访,随访时间12～24个月,平均16个月.X线片示骨折均愈合,愈合时间3～4个月.术后6个月Bohler角(28.5±6.1)°,Gissane角(128.9±4.8)°,与术前比较差异均有统计学意义(P＜0.05).按Maryland足部功能评分系统,优15足,良18足,差4足,优良率89.19%.结论 切开复位植骨联合可塑形钛板内固定治疗跟骨关节内骨折能获得较好疗效.选择适当的手术时机、必要的关节面下植骨、合适的可塑形钛板内固定能最大限度减少术后并发症的发生.     

植骨与不植骨切开复位内固定治疗跟骨关节内骨折的比较研究

目的 通过对已发表文献进行汇总分析,根据现有数据资料总结植骨与不植骨对切开复位内固定治疗跟骨关节内骨折预后的影响.方法 通过系统检索1990年1月至2010年12月发表的关于切开复位内固定结合植骨(植骨组)或不植骨(不植骨组)治疗关节内跟骨骨折的英文文献.经全文阅读决定是否符合纳入标准或排除标准,收集相关结果和数据,通过循证医学分析方法,加权汇总分析2种治疗方案的功能预后和并发症.结果 共32篇文献包含128l例患者纳入研究.植骨组与不植骨组的术后感染率、骨关节炎发生率、距下关节融合率比较差异无统计学意义(P＞0.05).植骨组术足完全负重时间(平均5.4周)显著低于不植骨组(平均10.5周).植骨组术后平均B(o)hler角显著大于不植骨组,且远期丢失较小.植骨组加权美国足踝外科协会(AOFAS)评分低于不植骨组,分别为71.4分和80.5分;但加权Creighton评分高于不植骨组,分别为89.9、81.0分.植骨组加权优良率:优35%,良40%,中21%,差4%,不植骨组:优34%,良42%,中14%,差10%,两组比较差异无统计学意义(P＞0.05).结论 切开复位内固定结合植骨治疗跟骨关节内骨折不会明显增加术后感染率,可较好地恢复B(o)hler角,患者可早期完全负重.但植骨组的纳入患者中,塌陷型和粉碎性骨折的比例较高,仍需配对设计的前瞻性比较研究进一步完善证据.     

跟骨关节内骨折不同内固定方式疗效比较

目的：总结跟骨关节内骨折的治疗经验，探讨切开复位内固定方式的选择及植骨方法。方法：跟骨关节内骨折82例94足，男50例57足，女32例37足，其中双足跟骨骨折12例。根据CT采用Sanders分类法，SandersⅠ型8足，Ⅱ型34足，Ⅲ型36足，Ⅳ型16足。其中Ⅱ型：钢针固定组16足，其中植骨组9足，未植骨组7足；钢板固定组12足，其中植骨组8足，未植骨组4足；撬拨复位6足。Ⅲ型：钢针固定组12足，其中植骨组8足，未植骨组4足；钢板固定组17足，其中植骨组11足，未植骨组6足；撬拨复位7足。采用Maryland足部评分系统评分。结果：随访时间1—28个月，平均11．5个月，SandersⅡ型与Ⅲ型切开复位内固定方式的治疗结果比较无统计学差异（P〉0．05）；植骨组和未植骨组的治疗结果比较有统计学差异（SandersⅡ型P〈0．05，SandersⅢ型P〈0．01）。结论：SandersⅡ型与Ⅲ型跟骨骨折切开复位内固定时应尽量选用钢针内固定并应植骨，若跟骨碎成多块，可选用钢板固定。     

跟骨关节内骨折的手术治疗

目的探讨跟骨关节内骨折切开复位钢板螺钉内固定植骨术的临床疗效。方法回顾性分析2007年9月至2011年3月我科采用切开复位钢板螺钉内固定植骨术治疗跟骨骨折病例30例（32足）,骨折按Sanders标准分型,Ⅱ型14例,Ⅲ型11例,Ⅳ型5例。结果所有患者均获得随访,随访8～36个月,平均28个月,术后3个月余骨折均愈合。术后切口延迟愈合1例,距下关节炎1例。术后足部功能评分按Maryland标准评分,优18例,良9例,可3例,优良率90%。结论切开复位钢板螺钉内固定植骨术治疗跟骨关节内骨折临床效果满意。     

The effect of demineralized bone matrix-calcium sulfate with vancomycin on calcaneal fracture healing and infection rates: a prospective study

BACKGROUND: Displaced intra-articular calcaneal fractures may have a central cancellous bone defect area. We hypothesized that human demineralized bone matrix (DBM) calcium sulfate (CaSO(4)) might act as a reasonable alternative to autograft in calcaneal fractures. When combined with antibiotic powder, this bone graft substitute also may act as a local antibiotic delivery device. This is the first clinical study evaluating bone healing and complications associated with DBM-calcium sulfate bone graft substitute in the treatment of displaced intra-articular calcaneal fractures with a central cancellous bone defect. METHODS: Over a 29-month period, 33 displaced intra-articular calcaneal fractures with central cancellous defects were treated with open reduction and internal fixation (ORIF) and grafting with vancomycin/DBM-calcium sulfate bone graft substitute. Eleven fractures without bone defects were treated with ORIF only. Patient demographics, medical history, and CT fracture classification were recorded. Postoperatively, fractures were monitored every 2 weeks for healing and complications. RESULTS: The mean time to union was 8.2 weeks in the grafted, while the control group mean time to union was 10.4 weeks (p = 0.0117). Wound problems occurred in five (15%) of the 33 patients with grafting, all in type III fractures with severe soft-tissue swelling, and included two minor wound healing delays, and three serious wound problems. At a mean followup time of 22.4 months, no DBM-calcium sulfate grafted calcaneus demonstrated evidence of osteomyelitis. CONCLUSIONS: This is the first study examining human DBM-calcium sulfate bone graft substitute to treat displaced intra-articular calcaneal fractures. Based on these initial data, human DBM-calcium sulfate acted as an acceptable and safe autograft alternative in displaced intra-articular calcaneal fractures with moderate (5 cc to 10 cc) central cancellous bone defects.     

切开复位内固定治疗移位的跟骨关节内骨折的疗效分析

目的 评定切开复位内固定治疗移位的跟骨关节内骨折的疗效,并分析其影响因素.方法 回顾性分析2004年3月至2006年7月收治的采用切开复位内固定治疗的移位跟骨关节内骨折40例(46足).按照Sanders分型:Ⅱ型16足,Ⅲ型19足,Ⅳ型11足,总结评定其临床疗效并分析影响疗效的相关因素. 结果 所有患者均得到随访,平均随访18个月(13～28个月).根据Maryland足部评分系统评价术后疗效:优21足,良16足,可6足,差3足,优良率82.6%.优良率在不同骨折类型中分别为:Ⅱ型93.8%(15/16),Ⅲ型84.2%(16/19),1V型54.5%(6/11);伤后至手术时间≤14 d组和＞14d组分别为87.2%(34/38)和42.9%(3/8);在术后B0hler角＜15°组和≥15°组分别为37.5%(2/9)和89.5%(35/37);关节面复位质量≤2 mm组和＞2 mm组分别为91.2%(32/33)和45.5%(5/13).对各因素的优良率比较,差异有统计学意义(P＜0.05). 结论 切开复位内固定治疗移位的跟骨关节内骨折,治疗效果好.骨折类型、伤后至手术时间、术后Bohler角的恢复程度、关节内骨折的复位质量为影响其术后疗效的重要因素.     

经皮闭合复位有限切开微创钢板内固定治疗跟骨骨折疗效分析

目的比较经皮闭合复位有限切开微创钢板内固定(MIPPO)与传统L形切口切开复位钢板内固定(ORIF)治疗SandersⅡ~Ⅳ型闭合性跟骨骨折的临床疗效。方法笔者自2013-06—2015-06分别采用经皮闭合复位有限切开MIPPO技术(试验组)和传统L形切口ORIF(对照组)治疗64例SandersⅡ~Ⅳ型闭合性跟骨骨折,比较2组术后AOFAS评分、术前及术后Bohler角、切口长度、术中出血量、手术时间、切口愈合情况、术后并发症发生率及住院时间。结果2组术后获得随访12~36(21.3±8.8)个月。2组术后12个月AOFAS评分优良率比较差异无统计学意义(P0.05)。2组术后7 d Bohler角明显高于术前,差异有统计学意义(P0.05)。试验组切口长度、术中出血量、手术时间、住院时间、切口愈合情况及并发症发生率明显优于对照组,差异有统计学意义(P0.05)。结论经皮闭合复位有限切开MIPPO技术治疗SandersⅡ~Ⅳ型单侧跟骨骨折取得满意的临床疗效,具有损伤更小、愈合更快、并发症发生率低等优势,值得临床推广。     

切开复位固定＋不植骨治疗Sanders Ⅲ型和Ⅳ型跟骨骨折

目的探讨切开复位固定、不植骨治疗SandersⅢ、Ⅳ型跟骨骨折的手术方法及疗效。方法 2008年1月~2011年11月,应用跟骨外侧手术入路、切开复位解剖钢板固定、不植骨治疗跟骨粉碎性骨折66例、77足。其中男45例,女21例,11例为双侧。年龄22~55岁,平均37岁。根据Sanders分型,Ⅲ型17足,Ⅳ型60足。结果本组66例患者均获随访,获随访12~18个月,平均15个月。77足切口均Ⅰ期愈合,随访中无螺钉退出、断裂等现象。除5例合并股骨骨折的的病例,其余半年后均能正常行走。术前Bǒhler’s角（4.6°±6.2°）,术后（31.6°±7.4°）;术前Gissane’s角（158.12°±8.57°）,术后（136.58°±6.85°）,各指标手术前后比较差异有统计学意义。按Maryland足部评分系统评价术后功能,本组77足中,优（90~100分）68足,良（75~89分）8足。可（50~74分）1足,优良率98.7%。结论通过本方法治疗跟骨骨折,能够良好的维持跟骨的解剖形态,足的功能恢复满意,且明显降低了植骨术后的排异反应及切口不愈合的发生,有效的减轻了患者的痛苦和经济负担。     

锁定钢板治疗跟骨关节内粉碎骨折的疗效分析

目的评价跟骨锁定钢板治疗跟骨关节内粉碎骨折的疗效。方法 2007年5月至2009年7月,应用跟骨锁定钢板治疗跟骨关节内粉碎骨折32例,男25例,女7例;年龄24～61岁,平均38.5岁。骨折按照Sanders分型,型5例,型19例,型8例。术后随访包括临床检查、X线片及采用Maryland足部评分标准进行足踝功能评分。结果 32例均获随访,时间10～28个月,平均17.2个月。骨折愈合时间9～19周,平均15.4周。无延迟愈合及不愈合,骨折端无移位,内固定无松动、断裂等现象。根据Maryland足部评分标准,优18例,良9例,一般3例,优良率为84.4%。结论跟骨锁定钢板是治疗跟骨关节内粉碎性骨折的有效方法,有利于患肢功能的早日恢复。     

切开复位内固定治疗移位的跟骨关节内骨折

目的探讨切开复位可塑跟骨钢板内固定治疗移位的跟骨关节内骨折的疗效。方法对76例（82足）复杂跟骨关节内骨折行切开复位可塑跟骨钢板内固定治疗,其中39足予自体髂骨植骨。结果76例均获随访,时间12-35（22.3±3.7）个月。B hler角术前9.3°±3.2°,术后恢复到26.7°±6.8°;Gissane角术前101.6°±13.3°,术后恢复到120.1°±14.2°。根据Maryland足部评分系统：优39足,良31足,可8足,差4足。结论切开复位可塑跟骨钢板内固定治疗复杂的跟骨关节内骨折,固定牢固,能早期功能锻炼,可减少并发症。     

Short-Term Outcomes of Open Reduction and Internal Fixation for Sanders Type III Calcaneal Fractures With and Without Bone Grafts

Calcaneal fractures, often caused by a fall from a height, are the most common injuries encountered by orthopedic surgeons. Currently, open anatomic reduction and internal fixation (ORIF) is considered a valuable treatment of displaced intraarticular fractures of the calcaneus; however, the need for bone grafting in the treatment is still controversial. Therefore, in the present study, we investigated the outcomes of 2 methods (with and without bone grafting) used for the surgical treatment of Sanders type III calcaneal fractures. From January 2013 to September 2015, 57 cases (55 patients) with displaced Sanders type III calcaneal fractures (53 unilateral and 2 bilateral) were enrolled. The patients were divided into 2 groups: group I was treated by ORIF with bone grafting (n = 28) and group II was treated by ORIF without bone grafting (n = 29). The radiologic evaluation included Böhler's angle, Gissane's angle, and the height and width of the calcaneum. In addition, the American Orthopaedic Foot and Ankle Society questionnaires and visual analog scale were completed by the patients. During the follow-up period, no differences were found in the outcome measures (Böhler's angle, p = .447; Gissane's angle, p = .599; calcaneal height, p = .065; calcaneal width p = .077; and American Orthopaedic Foot and Ankle Society questionnaires, p = .282) with or without bone grafting. The only difference between the 2 groups was the occurrence of postoperative pain (p = .024 and p = ≤ .05), which was greater in the patients who had undergone bone grafting. We have provided evidence that bone grafting with internal fixation in the treatment of intraarticular calcaneal fractures failed to improve the restoration of Böhler's angle or Gissane's angle. No statistically significant difference was found in the short-term outcomes between the 2 methods used for the surgical treatment of Sanders type III calcaneal fractures.     

Dynamic and Functional Gait Analysis of Severely Displaced Intra-Articular Calcaneus Fractures Treated with a Hinged External Fixator or Internal Stabilization

The purpose of this article was to assess functional gait outcome. Fifty-five patients with severely displaced intra-articular calcaneus fractures and soft tissue damage were evaluated prospectively with computerized dynamic pedography and a clinical scoring scale. The treatment protocol assigned 30 patients to open reduction and internal fixation (ORIF) and 25 to closed reduction and stabilization with a biomechanically tested hinged external fixator. Gait parameter was evaluated by measuring plantar pressure distribution, length of a double-step, double-step duration, standing duration, effective foot length, and width of gait. Pedographic measurements were performed with a custom-made gait analysis system (medilogic Gangas, Berlin, Germany). Results were graded by an extended protocol of questionnaires and the American Orthopaedic Foot and Ankle Society (AOFAS) ankle and hindfoot scales. Radiographs were reviewed according to the Sanders classification at the time of follow-up (7.3 years). All measurements were statistically analyzed (t test; Mann-Whitney U test). Aberrations were associated with all calcaneal fractures in both groups. Dynamic gait analysis showed gait asymmetry in all patients. The type of treatment (ORIF or a hinged fixator) of severely displaced calcaneus fractures did not affect gait analysis nor result in significantly different (P > .05) patient outcome scores. The gait analysis system allows a valid dynamic pedographic measurement. The hinged external fixator can be recommended in displaced intra-articular calcaneal fractures with severe soft tissue damage to reduce complications associated with ORIF. ACFAS Level of Clinical Evidence: 2c.     

Langzeitergebnisse und Behandlungsvorschläge bei Kalkaneusfrakturen

Background

The long-term outcome (follow-up 82–154 months) of 167 patients with 181 displaced calcaneal fractures treated by open reduction and internal fixation (ORIF) in a level I trauma center (Berufsgenossenschaftliches Unfallkrankenhaus Hamburg, from January 2000 to December 2005) was analyzed in a retrospective cohort study.

Methods

The study involved a comparative analysis of the preoperative and postoperative X-ray and computed tomography (CT) images, a clinical examination and the analysis by two standardized questionnaires, the American Orthopedic Foot and Ankle Society (AOFAS) and the Maryland foot score (MFS) on function and load bearing.

Results

A special focus was on displaced, intra-articular calcaneal fractures (classified as Sanders type IV and Zwipp grades 11 and 12 points). Treatment results were not directly affected by injury severity. Only ten patients were in need of subtalar arthrodesis in the follow-up. A primary subtalar fusion was avoided and should only be an option in exceptional cases. Also primary bone grafting for defect filling appears unnecessary and was not implemented. No malunions, nonunions or refractures were detected.     

跟骨锁定钢板治疗跟骨关节内粉碎性骨折的疗效分析

目的 评价跟骨锁定钢板治疗跟骨关节内粉碎性骨折的疗效.方法 2006年10月至2007年12月,应用国际内固定研究学会(AO/ASIF)设计的跟骨锁定钢板治疗跟骨关节内粉碎性骨折21例,男12例,女9例;年龄24～78岁,平均42.5岁;左侧8例,右侧13例.骨折按照Sanders分型:Ⅲ型12例(Ⅲ型2例,Ⅲac型6例,Ⅲbc型4例),Ⅳ型9例.术后随访包括临床检查、问卷式调查、摄x线片及应用三维动态足底压力分析系统进行足底压力分析.采用Maryland足部评分标准进行足踝功能评分. 结果 18例获随访,时间10～21个月,平均15.5个月.骨折愈合时间7～14周,平均11.4周.无延迟愈合及不愈合,骨折端无移位,螺钉无松动、拔出及断钉.根据Maryland足部评分标准,患侧在末次随访时平均为81.7分(60～94分),其中优6例,良9例,一般3例.优良率为83.3%.末次随访X线片上的跟骨形态学指标较术前均有明显改善,差异有统计学意义(P＜0.05).三维动态足底压力测量结果提示无一例发生创伤件平足,患足躅趾、第1～5跖骨头平均峰值压力稍增高,差异有统计学意义(P＜0.05),足跟部平均峰值压力减小,差异有统计学意义(P＜0.05). 结论应用跟骨锁定钢板治疗跟骨关节内粉碎性骨折,有利于患肢早期负重锻炼,可获得较理想的临床疗效.