Ideal angle of syndesmotic screw fixation: A CT-based cross-sectional image analysis study

Without clear reference, the precision of syndesmotic screw placement cannot be guaranteed and malposition of these screws leads to poor results. Therefore, to prevent malpositioning of syndesmotic screws, an improved understanding of the orientation of tibiofibular syndesmosis is essential. We analyzed cross-sectional computed tomography (CT) scans of the foot and ankle to identify precise screw positions for the treatment of syndesmotic injuries. A total of 134 calcaneal fractures with intact tibiofibular syndesmosis were enrolled in this retrospective study. We measured the angle between the perpendicular line of the second proximal phalanx and the line start apex of the lateral cortex of the fibula bisecting the tibial incisura and crossing the center of the tibia in neutral ankle joints, with the second toe positioned anteriorly using a short leg splint. The second toe was used as the reference for clarity and applicability. The ideal angle of syndesmotic screw placement in cross-sectional CT images was 18.8 ± 5.6° (mean ± standard deviation) and did not differ according to independent variables (P > 0.05). In neutral ankle joints with the second toe positioned anteriorly, the ideal angle of syndesmotic screw placement is 18.8°, which is less than that currently in used in conventional methods.     

锁扣带袢钛板与传统螺钉治疗踝关节骨折伴下胫腓联合损伤疗效比较

目的:比较锁扣带袢钛板与传统螺钉治疗踝关节骨折伴下胫腓联合损伤的临床效果。方法:对2014年5月至2016年2月采用锁扣带袢钛板重建和传统螺钉固定治疗的68例踝关节骨折伴下胫腓联合损伤患者的临床资料进行回顾性分析。根据治疗方法分为锁扣带袢钛板组和传统螺钉组,锁扣带袢钛板组33例采用锁扣带袢钛板重建下胫腓联合,其中男18例,女15例;年龄20~55岁,平均(32.4±5.2)岁;Lauge-Hansen分型为旋前外旋Ⅲ度12例,Ⅳ度21例。传统螺钉组35例采用传统螺钉固定下胫腓联合治疗,其中男19例,女16例;年龄21~54岁,平均(32.8±5.5)岁;Lauge-Hansen分型为旋前外旋Ⅲ度13例,Ⅳ度21例,旋前外展1例。观察并比较两组患者手术复位固定下胫腓联合的时间、并发症情况,并于术后3、6个月及末次随访采用AOFAS评分进行功能评价。结果:所有病例获得随访,时间8~24个月,平均(16.3±3.8)个月。下胫腓联合固定时间锁扣带袢钛板组(10.1±2.8)min,传统螺钉组(9.5±2.3)min,两组比较差异无统计学意义(P0.05)。两组患者并发症比较差异有统计学意义(P0.05)。两组患者术后3、6个月AOFAS评分比较差异有统计学意义(P0.05)。末次随访锁扣带袢钛板组优23例,良9例,中1例;传统螺钉组优18例,良12例,中5例;两组比较差异无统计学意义(P0.05)。结论:锁扣带袢钛板治疗下胫腓联合韧带损伤,操作方便,可早期负重锻炼而无断钉风险,为治疗踝关节骨折伴下胫腓联合损伤提供了新的选择。但仍需进一步研究总结纽扣钢板置入的角度、方向及张力的调节。     

A cadaveric study investigating the role of the anterior inferior tibio-fibular ligament and the posterior inferior tibio-fibular ligament in ankle fracture syndesmosis stability

BackgroundThis cadaveric study aimed to investigate the role AITFL and PITFL have on preventing talar shift in ankle fractures, as well as investigating the role of AITFL reconstruction in preventing talar shift.MethodsTwelve lower limb cadavers were used. Talar shift was measured following: Step 1- no ligaments cut; Step 2- entire deltoid ligament division; Step 3- group A (5 specimens) PITFL cut whilst group B (7 specimens) AITFL cut; Step 4- group A had AITFL divided whilst group B had PITFL cut. Reconstruction of the AITFL was performed using part of the superior extensor retinaculum as a local flap. Measurement of talar shift was then repeated.ResultsWith no ligaments divided, mean talar shift was 0.8 mm for group A and 0.7 mm for group B. When the deltoid ligament was divided, mean talar shift for group A was 4.8 mm compared to 4.7 mm in group B (P = 1.00). The mean shift in group A after PITFL division was 6.0 mm, increasing the talar shift by an average of 1.2 mm. In group B after AITFL division mean talar shift was 8.3 mm (P = 0.06), increasing talar shift by an average of 3.6 mm. After division of the second tibiofibular ligament, mean talar shift in group A measured 10.0 mm and in group B was 10.9 mm (P = 0.29). Three times more talar shift occurred after the AIFTL was divided compared to the PITFL (P = 0.06).ConclusionConsequently, repairing the PITFL in isolation (for example by fixation of a posterior malleolus avulsion fracture) may not adequately prevent talar shift; we feel consideration should also be given to reconstruction of the AITFL to augment the syndesmosis fixation, which may provide a stronger restoration of ankle stability.Level of Clinical Evidence: 5.     

Angle bisector method to determine the accurate angle for tibiofibular syndesmotic fixation: A validation study with 3D-printed anatomical models

PurposeThis study aimed to validate the angle bisector method on 3D-printed ankle models to reveal whether it aids in placing syndesmotic screws at an accurate trajectory that is patient- and level-specific and also not surgeon-dependent.MethodsDICOM data of 16 ankles were used to create 3D anatomical models. Then the models were printed in their original size and two trauma surgeons performed the syndesmotic fixations with the angle bisector method at 2 cm and 3.5 cm proximal to joint space. Afterward, the models were sectioned to reveal the trajectory of the screws. The photos of the axial sections were processed in a software to determine the centroidal axis which is defined as true syndesmotic axis and analyze its relationship with the screws inserted. The angle between the centroidal axis and syndesmotic screw was measured by two-blinded observers 2 times with 2 weeks interval.ResultsThe average angle between the centroidal axis and screw trajectory was 2.4° ± 2° at 2 cm-level and 1.3° ± 1.5° at 3.5 cm-level, indicating a reliable direction with minimal differences at both levels. The average distance between fibular entry points of the centroidal axis and screw trajectory was less than 1 mm at both levels indicating that the angle bisector method can provide an excellent entry point from fibula for syndesmotic fixation. The inter- & intra-observer consistencies were excellent with all ICC values above 0.90.ConclusionThe angle bisector method provided an accurate syndesmotic axis for implant placement which is patient- & level-specific and not surgeon-dependent, in 3D-printed anatomical ankle models.     

皮质螺钉治疗下胫腓联合分离伴踝关节骨折

目的:探讨皮质螺钉治疗下胫腓分离伴踝关节骨折的临床经验.方法:收集2008年3月至2012年5月采用皮质螺钉治疗下胫腓联合分离44例,左侧20例,右侧24例;均为闭合性损伤.按Lauge-Hansen分型:旋后外旋型18例,其中Ⅱ型4例,Ⅲ型8例,Ⅳ型6例;旋前外旋型14例,其中Ⅲ型6例,Ⅳ型8例;旋前外展型12例,其中Ⅱ型4例,Ⅲ型8例.按3踝损伤情况,其中1踝4例,2踝28例,3踝12例.术前所有患者根据病史、查体及影像学检查明确诊断,术后采用Baird-Jackson评分标准及踝关节活动度进行临床疗效评价.结果:所有患者获得随访,时间11～23个月,平均15.7个月.术后未见创口感染、骨不愈合、下胫腓联合再次分离等并发症发生.术后Baird-Jackson评分91.56±6.26(75～99分),其中优26例,良10例,可6例,差2例.术后出现1例断钉,取出断钉后未进行外固定,功能良好.1例1度骨性关节炎,采用理疗及关节腔注射治疗后好转.结论:皮质螺钉是治疗下胫腓联合分离的有效手段,明确的诊断、良好的手术操作、术后合理的功能锻炼、及时随访复查是影响其预后的重要因素.     

TightRope与金属螺钉内固定治疗下胫腓联合分离的临床疗效对比

目的探讨锁扣带袢钛板(Tight Rope)内固定与金属螺钉内固定2种术式治疗下胫腓联合分离的临床疗效。方法笔者自2012-01—2016-03采用Tight Rope(Tight Rope组)与金属螺钉(金属螺钉组)2种内固定术式治疗46例下胫腓联合分离伴或不伴踝关节骨折。分别记录2组术前、术后即刻、术后3个月、末次随访时后前位X线片上下胫腓间隙(TBCS)、下胫腓重叠距离(TBOL),观察比较2组术后VAS评分、部分负重时间、完全负重时间、AOFAS踝与后足功能评分。结果 2组手术均顺利完成,术后切口均一期愈合,均获得平均14(11~18)个月随访。2组术前、术后即刻、术后3个月、末次随访时TBCS、TBOL差异无统计学意义(P0.05);2组术后3 d VAS评分差异无统计学意义(P0.05);Tight Rope组术后部分负重时间及完全负重时间均少于金属螺钉组,差异有统计学意义(P0.05);Tight Rope组术后3个月及6个月的AOFAS踝与后足评分高于金属螺钉组,差异有统计学意义(P0.05),2组末次随访时AOFAS踝与后足功能评分差异无统计学意义(P0.05)。金属螺钉组出现1例螺钉弯曲、1例螺钉断裂,Tight Rope组无内固定松动、断裂等并发症。2组均无下胫腓联合再次分离、踝关节再次骨折等并发症。结论 Tight Rope内固定与螺钉内固定均为治疗下胫腓联合分离的可靠性方法;Tight Rope组可早期功能锻炼及下地负重,踝关节功能恢复较金属螺钉组更有优势。     

Internal fixation of distal tibiofibular syndesmotic injuries: a systematic review with meta-analysis

No consensus had been reached about the optimal method for syndesmotic fixation. The present study analysed syndesmotic fixation based on the highest level of clinical evidence in order to obtain more reliable results. Medline, Embase and Cochrane database were searched through the OVID retrieval engine. Manual searching was undertaken afterward to identify additional studies. Only randomized controlled trials (RCT) and prospective comparative studies were selected for final inclusion. Study screening and data extraction were completed independently by two reviewers. All study characteristics were summarized into a table. The extracted data were used for data analysis. Twelve studies were finally included: six of them were RCTs, two were quasi-randomized studies and four were prospective comparative studies. Four comparisons with traditional metallic screw were identified in terms of bioabsorbable screws, tricortical fixation method, suture-button device as well as non-fixation choice in low syndesmotic injuries. Both absorbable screws and the tricortical fixation method showed almost no better results than traditional quadricortical metallic screw (p > 0.05). Additionally, existing studies could not illustrate their efficiency of reducing hardware removal rate. The suture button technique had significantly better functional score (p = 0.003), ankle motion (p = 0.02), time to full weightbearing (p < 0.0001) and much less complications (p = 0.0008) based on short and intermediate term follow-up data. Transfixation in low syndesmotic injuries showed poorer results than the non fixed group in all outcome measurements, but didn’t reach a significant level (p > 0.05). The present evidence still couldn’t find superior performance of the bioabsorbable screw and tricortical fixation method. Their true effects in decreasing second operation rate need further specific studies. Better results of the suture-button made it a promising technique, but it still needs long-term testing and cost-efficiency studies. The patients with low syndemotic injuries should be well assessed before fixation determination and the indication of screw placement in such conditions needs to be further defined.     

Predisposing factors for chronic syndesmotic instability following syndesmotic fixation in ankle fracture: Minimum 5-year follow-up outcomes

BackgroundThis study aimed to identify risk factors for chronic syndesmotic instability following syndesmotic fixation.MethodsWe performed a retrospective review of consecutive patients who had sustained ankle fractures requiring syndesmotic fixation. Patients available for a minimum 5 years of follow-up were classified into 2 groups according to the presence of syndesmotic instability. Statistical binary logistic regression analyses were performed to investigate the significance of various risk factors. Functional outcomes were assessed using the FAOS.ResultsIn total, 166 patients who met the study inclusion criteria underwent analysis. The overall postoperative instability rate was 20.5%, which was significantly affected due to BMI (p = 0.018; OR 6.72), and concomitant posterior malleolar fracture (p = 0.032, OR 2.77). The mean scores in the syndesmotic instability (SI) group were significantly lower than those in the no syndesmotic instability (NSI) group (p = 0.021).ConclusionsObesity and concomitant posterior malleolar fracture were significant risk factors for postoperative syndesmotic instability.     

Biomechanical comparison of suture-button,bioabsorbable screw,and metal screw for ankle syndesmotic repair: A meta-analysis

BackgroundTo compare biomechanically metal screw fixation to suture-button or bioabsorbable screw fixation for ankle syndesmotic injuries.MethodsA literature search of the comparison studies in Pubmed and Google Scholar was conducted. The biomechanical outcomes of interest were syndesmotic stability in the coronal, sagittal, and axial planes as well as torque and rotation at failure.ResultsA total of 11 cadaveric studies were included. In the suture-button group, coronal displacement (MD 1.72 mm, p = 0.02) and sagittal displacement (MD 2.65 mm, p = 0.0003) were increased relative to the metal screw group. In contrast, no difference was found with axial rotation (MD 0.35 degrees, p = 0.57). Bioabsorbable screws exhibited equivalent failure torque (MD ?3.04 Nm, p = 0.53) and rotation at failure (MD 3.77 degrees, p = 0.48) in comparison to metal screws.ConclusionsSuture-button provide less rigidity when compared to metal screw fixation. They afford flexible syndesmotic micromotion which may more closely resemble a physiological state and be helpful for ligament healing. Bioabsorbable screws demonstrate similar mechanical strength properties to metal screws.     

Endobutton与螺钉内固定治疗下胫腓联合分离的临床疗效分析

目的 :探讨采用Endobutton纽扣钢板线缆系统与皮质骨螺钉内固定治疗下胫腓联合韧带损伤分离的临床疗效。方法:回顾性分析2011年10月至2013年10月,手术治疗的38例踝关节骨折合并下胫腓联合分离者患者,按术中内固定材料,分为皮质螺钉内固定(A组)和Endobutton纽扣钢板线缆系统固定(B组)。其中A组26例,男16例,女10例;年龄19~63岁,平均(37.90±4.67)岁;左侧14例,右侧12例;按Danis-Weber分型:B型8例,C型18例;按照Lauge-Hanson分型:旋后外旋(SER)9例,旋前外展(PAB)10例,旋前外旋(PER)7例。B组12例,男7例,女5例;年龄20~55岁,平均(38.70±6.03)岁;左侧6例,右侧6例;按Danis-Weber分型:B型4例,C型8例;按Lauge-Hanson分型:旋后外旋3例,旋前外展2例,旋前外旋7例。记录并比较两组患者手术时间、术中出血量、手术费用、住院时间、术后1个月疼痛评分、创口愈合情况及术后负重时间,定期复查X线片评估两组患者骨折愈合情况。术后采用美国足踝外科协会(AOFAS)踝与后足评分系统对患者进行踝关节功能评价。结果:38例患者获得随访,时间8~18个月,平均13.5个月。术后A组比B组的手术时间更长、经济费用更高(P0.05);两组患者术中失血量、住院时间、术后1个月疼痛评分、负重时间比较差异无统计学意义(P0.05);两组的胫腓骨重叠宽度、胫腓骨间隙、内踝间隙比较差异无统计学意义(P0.05)。术后X线片随访,A组骨折愈合良好,1例患者术后8周螺钉断裂,踝穴无移位,B组病例骨折愈合良好,无装置脱落,踝穴无移位。术后AOFAS评分:A组(87.50±8.67)分,优18例,良4例,可4例;B组(86.23±7.42)分,优7例,良4例,可1例。两组AOFAS评分比较差异无统计学意义(P0.05)。结论 :Endobutton纽扣钢板线缆系统是一种治疗下胫腓联合韧带损伤分离的弹性固定装置,其固定效果与螺钉内固定相似,但避免了螺钉断裂风险,术后无须常规取出,有利于患者提前进行负重功能锻炼。     

对不同入路治疗含后踝压缩骨块三踝骨折的疗效分析

目的 比较采用经腓骨入路与后外侧入路治疗含后踝压缩骨块的三踝骨折的临床疗效.方法 回顾性分析2014年6月—2017年6月深圳平乐骨伤科医院创伤科罗湖院区及坪山院区收治71例含后踝压缩骨块的三踝骨折患者的临床资料,比较并分析两组手术情况、术后踝关节功能、并发症.结果 所有患者术后获平均18(12～48)个月随访,骨折均...     

A New Intraoperative Syndesmosis Instability Classification System: Utility and Medium‐term Results in Closed Displaced Ankle Fractures

Objective

To investigate the utility and medium‐term results of a new intra‐operative classification system for distal tibiofibular syndesmosis injury in ankle fractures.

Methods

Between January 2010 and January 2015, 116 patients diagnosed with displaced closed Weber B and C ankle fractures were treated in our department. The etiology of injury was 56 cases of fall‐sprain, 36 of traffic injury, 14 of fall from a height, and 10 of multiple injuries. After fixation of the fibular fracture, we classify syndesmosis stability as either normal or one of three grades of instability using the fibular hook traction test. This determined further fixation selection and final syndesmosis treatment.

Results

Of 116 cases, 82 (71%) demonstrated a tibiofibular syndesmosis injury and 52 (45%) were unstable. Twenty‐six cases were type I injuries (<4 mm displacement), 41% cases were type II injuries (4–7 mm displacement), and 3% of cases were type III injuries (>7 mm displacement). Types II and III are defined as unstable and require stabilization. Type III injuries have multiplanar instability and require two screws at the syndesmosis. Weber C fractures demonstrate significantly greater degrees of instability than Weber B fractures (χ² = 15.50, P = 0.0014). All patients were followed up for 12–24 months, with no cases of non‐union or broken screws. Good and excellent results were achieved in 93% of cases (according to the American Orthopaedic Foot and Ankle Society scoring system).

Conclusion

The syndesmosis instability classification system provides a rational and efficient basis for managing syndesmosis instability. Our results from application of the algorithm justify its further evaluation in the treatment of patients with closed displaced Weber B and C ankle fractures.

     

Distal tibiofibular syndesmosis fixation: A cadaveric, simulated fracture stabilization study comparing bioabsorbable and metallic single screw fixation

Metal screws that are used for ruptured tibiofibular syndesmosis repair are often removed within 3 months of placement, suggesting the utility of bioabsorbable screws. A biomechanical study was performed to compare fixation of a simulated syndesmosis separation with a 5-mm oriented copolymer bioabsorbable (82:18 poly-L-lactic acid/poly-glycolic acid) versus a stainless steel screw. Eight pairs of cadaveric lower-leg specimens were cleaned and a pronation external rotation-type injury was created in each. The syndesmosis was fixed with a single, tricortical bioabsorbable screw in 1 ankle and a metal screw in the contralateral ankle (matched pairs). Sequential testing of the specimens showed that torsional stiffness of the fixed, relative to intact, specimens was nearly equivalent (0.730 +/- 0.260 for copolymer, 0.770 +/- 0.300 for stainless steel; P = .401). Application of 1000 cycles of axial load (90 to 900 N) resulted in a significant decrease ( P < .0001) in axial stiffness for each fixation method, but the relative decrease was equivalent for both ( P = .211). Failure torque (17.8 +/- 8.3 N.m copolymer, 21.0 +/- 11.5 N.m stainless steel; P = .238) and angle of rotation at failure (47.9 +/- 13.6 degrees copolymer, 42.0 +/- 11.5 degrees stainless steel; P = .199) were also nearly equivalent. It appears that the 5.0-mm diameter copolymer screw is biomechanically equivalent to the 5.0-mm diameter stainless steel screw for repair of syndesmosis disruption.     

The role of the posterior malleolus in the treatment of unstable upper ankle joint injuries - A biomechanical study

BackgroundThis biomechanical study aimed to test if the fixation of the posterior malleolus (PM) only with screws inserted from posterior to anterior (PA) restores stability comparable with the natural condition. The extent of stability was also compared with that of anterior to posterior (AP) screw osteosynthesis (OS) with an additional syndesmotic screw (SS).MethodsFirst, the stability of the upper ankle joint in seven pairs of intact lower legs were examined. Subsequently, half of the lower legs were treated with PA screw fixation of a PM fracture without SS and the other half with AP screw fixation with additional tricortical SS.ResultsPA OS without SS showed significantly more diastasis (p = 0.027). The AP OS with an SS revealed a diastasis that was comparable with the intact condition (p = 0.797). The use of SS led to significantly higher stability compared to OS without SS (p = 0.019).ConclusionsThe Fixation of the PM alone without an additional syndesmotic screw cannot achieve intact upper ankle stability. Fixation of a PM fracture with an SS helps in nearly achieving the natural condition.     

AO-B型踝关节骨折伴有下胫腓联合损伤诊断及治疗

目的探讨手术治疗 AO-B 型踝关节骨折伴有下胫腓联合损伤的诊断及治疗效果。方法2010年7月至2012年12月采用手术治疗AO-B型踝关节骨折伴有下胫腓联合损伤患者42例,其中三踝骨折30例,外后踝骨折伴有三角韧带断裂6例,单纯内外踝骨折6例。术中为先行外踝、后踝内固定,再行内踝内固定或内侧三角韧带修复,最后行下胫腓联合内固定。采用美国足踝骨科学会（AOFAS）踝-后足评分标准进行疗效评定。结果术后40例患者获得随访,平均随访时间为（14．3±0．5）个月（10～26个月）。所有患者骨折均愈合,其中伤口延迟愈合1例,无一例发生伤口感染及坏死。术后6、12个月AOFAS踝-后足评分分别为（87．1±2．16）分、（93．4±2．31）分,两者差异有统计学意义（P＜0．01）。末次随访时AOFAS踝-后足评分优26例（65．0％）,良10例（25．0％）,可6例（10．0％）,优良率为90．0％。结论对于AO-B型踝关节骨折,术前及术中准确判断是否伴有下胫腓联合损伤,并对其进行解剖复位及可靠内固定,可重建踝穴稳定性,促进踝关节功能恢复。     

The isolated posterior malleolar fracture and syndesmotic instability: A case report and review of the literature

IntroductionAnkle fractures are among the most common type of fractures in the lower extremity. A posterior malleolar fracture is frequently part of a more complex ankle fracture and only in rare cases it occurs as isolated injury. Posterior malleolar fractures often occur with associated injuries, such as a Maisonneuve fracture or with bi- or trimalleolar ligamentous injuries. Knowledge about these associated injuries is essential to prevent missed diagnoses. The aim of this article is to describe the isolated posterior malleolar fracture, the possible associated injuries, the diagnostic work-up and therapeutic consequences.Presentation of caseWe present a case of a 26-year-old male patient who sustained an isolated posterior malleolar fracture with 4.5 years follow-up.DiscussionIsolated fractures of the posterior malleolus are uncommon injuries. Diagnosis, treatment and outcome can seldom be extracted from large series. However, several cases have been described in literature, which we have summarized.ConclusionThis case report and literature review shows that isolated posterior malleolar fractures might occur as part of a more complex ankle injury, in combination with a fracture of the lower leg or after high energy trauma. Physicians should be aware of these associated injuries. Diagnostic work-up should include X-rays of the knee and lower leg and a CT scan of the ankle. If diagnosed and treated properly, isolated posterior malleolar fractures have a good long-term functional outcome.     

Dynamic Fixation versus Static Fixation in Treatment Effectiveness and Safety for Distal Tibiofibular Syndesmosis Injuries: A Systematic Review and Meta‐Analysis

To compare the effectiveness and safety of dynamic fixation (DF) and static fixation (SF) in distal tibiofibular syndesmosis injuries (DTSI) by a system review and meta‐analysis. PubMed, Cochrane, and EMBASE were systematically searched by computer to select clinical randomized controlled trials (RCT) and cohort trials comparing DF and SF in treating patients with DTSI. RCT and cohort trials comparing DF and SF for patients with DTSI were included. Inclusion criteria: (i) prospective or retrospective study of patients with DTSI; (ii) patients were diagnosed as having DTSI by imageology and only received DF treatment or SF treatment; (iii) the study compared DF and SF in DTSI; and (iv) one or more of the following outcomes were reported: ankle joint functional score, surgical complications, malreduction of syndesmosis, and second operations. Exclusion criteria: (i) non‐human studies; (ii) DTSI patients accompanied with other complications or other joints injuries; and (iii) full text unavailable. RevMan V5.3 software was used to perform the statistical analysis. Outcomes analyzed by Revman software showed that there were no statistically significant differences between DF and SF in the American Orthopaedic Foot and Ankle Society (AOFAS) ankle–hindfoot score (MD, 1.90; 95% CI, ?0.23 to 4.03; P = 0.08; I² = 0%), Olerud–Molander (OM) score (MD, 1.92; 95% CI, ?7.96 to 11.81; P = 0.70; I² = 55%), incidence of syndesmotic malreduction (RR, 0.19; 95% CI, 0.03 to 1.09; P = 0.06; I² = 0%), and overall postoperative complication rate (RR, 0.30; 95% CI, 0.09 to 0.99; P = 0.05, I² = 75%) and the rate of second procedure was significantly lower with DF (RR, 0.17; 95% CI, 0.07 to 0.43; P = 0.0002, I² = 54%). Compared to SF, DF has an advantage, with a low rate of second procedures to treat DTSI.     

采用踝关节镜辅助闭合复位经皮克氏针固定治疗内踝骨折的临床效果

目的 观察踝关节镜辅助闭合复位经皮克氏针固定治疗内踝骨折的临床效果.方法 对2017年1月至2019年1月安徽省蚌埠市第三人民医院骨科收治的内踝骨折患者50例的临床资料进行回顾性分析.依手术治疗方法分为研究组和对照组,对照组(n =25)患者接受常规切开复位内固定手术,研究组(n =25)患者接受踝关节镜下闭合复位经皮...     

旋前-外旋型踝关节骨折中隐匿后踝骨折的漏诊原因分析及治疗

目的：探讨旋前-外旋型踝关节骨折中隐匿后踝骨折相关漏诊病例的原因及治疗。方法：自2002年3月至2010年6月,收治旋前-外旋型踝关节骨折103例,其中9例后踝骨折漏诊,男6例,女3例;年龄18～55岁,平均35.2岁;根据Lauge-Hansen分型均为旋前-外旋型损伤。术中经C形臂X线透视发现4例,术后住院期间发现2例,余3例为外院术后于门诊随访时发现。手术入路采用踝关节后外侧入路,直视下复位后采用空心螺钉或锁定钢板固定。手术后根据美国足踝外科医师协会（American Orthopaedic Foot and Ankle Society,AOFAS）踝-后足功能评分进行功能评定。结果：9例术后均获随访,时间14～30个月,平均17个月。无切口感染,切口均I期愈合。末次随访AOFAS踝-后足功能评分83.0±4.4,其中术中发现并处理4例平均分85.0±2.9,二次手术处理5例平均分81.0±5.3,差异无统计学意义。术后平均2.2个月经X线片证实全部病例骨性愈合,未发现内固定松动、退钉、断裂及血管神经损伤等并发症。结论：旋前-外旋型踝关节骨折可能合并隐匿性后踝骨折,临床医师需充分了解其暴力传导机制,仔细阅读X线侧位片,对可疑后踝损伤者可行CT或MRI检查;同时,术中内外踝固定满意后附加侧位透视有助于避免漏诊。     

踝关节旋后外旋、旋前外旋Ⅳ型骨折三角韧带修复效果比较

目的比较旋后外旋(SER)Ⅳ型、旋前外旋(PER)Ⅳ型踝关节骨折三角韧带断裂修复治疗的治疗效果。 方法回顾性分析首都医科大学宣武医院骨科于2016年1月至2018年1月收治的SER、PER Ⅳ型踝关节骨折患者。纳入标准：三角韧带断裂;随访超过1年。排除标准：年龄≥70岁、踝关节存在陈旧性损伤、内踝骨折、同侧下肢其他部位骨折、开放性骨折、无法配合功能锻炼、病理性骨折。按照纳入排除标准,共有68例纳入本研究,SER组47人,PER组21人。评估两组患者术后1年后的踝关节美国足踝外科协会(AOFAS)评分、生活质量(QOL)评分,采用t检验比较两组之间的差异。 结果SER组患者的踝关节功能恢复情况优于PER组(t＝8.314,P<0.05);SER组的躯体健康优于PER组患者(t＝0.766,P<0.05)、但精神健康方面两组患者基本一致(t＝0.452,P>0.05),合计SF-36的总分后,发现两组患者的QOL无明显差异(t＝0.172,P>0.05)。 结论踝三角韧带断裂行修复后,SER Ⅳ型骨折患者的踝关节功能恢复情况、躯体QOL比PER Ⅳ型患者好,但是两组患者的精神健康QOL、总体QOL基本一致。