踝关节骨折合并三角韧带完全断裂的手术治疗

目的 探讨踝关节骨折合并三角韧带完全断裂的手术治疗方法和临床疗效. 方法 对2006年1月至2010年12月收治的48例踝关节骨折合并三角韧带完全断裂患者的病例资料进行回顾性研究,男26例,女22例;年龄17～74岁,平均44.2岁.损伤按照Lauge-Hansen分类:旋后外旋型Ⅳ度损伤14例;旋前外旋型Ⅲ度损伤12例,Ⅳ度损伤16例;旋前外展型Ⅲ度损伤5例.骨折按照AO/OTA分型:43-B2型1例,44-B2型3例,44-B3型16例,44-C1型7例,44-C2型8例,44-C3型13例.所有患者在骨折复位固定的同时修复三角韧带.术后通过临床检查、影像学评估、美国足踝外科学会(AOFAS)踝-后足评分和视觉模拟评分(VAS)对临床结果进行评估. 结果 所有患者伤口均获一期愈合.43例患者术后获12 ～ 32个月(平均19个月)随访,骨折愈合时间为10～16周(平均13.2周).末次随访时AOFAS踝-后足评分为83～100分(平均93.4分),VAS评分为0～6分(平均1.2分),无踝关节不稳定表现. 结论 对踝关节骨折合并三角韧带完全断裂的患者,需要合理的临床评估后再选择治疗方案,根据断裂的部位选择适当的手术缝合方法,可以取得较满意的效果.     

Early radiographic outcomes following deltoid ligament repair in bimalleolar equivalent ankle fractures

BackgroundIndications for deltoid ligament repair in bimalleolar equivalent ankle fractures are unclear. This study compared radiographic outcomes in bimalleolar equivalent ankle fractures undergoing open reduction internal fixation (ORIF) +/? deltoid ligament repair.MethodsA retrospective review of 1024 ankle fractures was performed. Bimalleolar equivalent injuries treated with ORIF +/? deltoid ligament repair were included. Radiographic assessment was performed preoperatively, and at three months postoperatively.ResultsOne hundred and forty-seven ankle fractures met inclusion criteria with 46 undergoing deltoid ligament repairs. There was a significant decrease in medial clear space (1.93 ± 0.65 mm vs. 2.26 ± 0.64 mm, p = 0.01), and tibiofibular clear space (3.89 ± 1.20 mm vs. 4.87 ± 1.37 mm, p = 0.0001) at 3 months postoperative in the deltoid repair group compared to the no repair group. When syndesmotic fixation was performed, there were no differences between groups.ConclusionDeltoid ligament repair in bimalleolar equivalent ankle fractures resulted in reduced medial clear space, and tibiofibular clear space in the early postoperative period. These differences were small and remained within established normal limits.Level of clinical evidenceLevel III, retrospective cohort study.     

Triplane ankle fracture with deltoid ligament tear and syndesmotic disruption

In patients with immature skeletons, ligamentous injuries rarely accompany ankle fractures. In this article, we report about deltoid ligament tears and syndesmotic disruptions accompanying triplane ankle fractures in two children, and make recommendations as to the evaluation and treatment of children with such injuries.     

Length change pattern of the ankle deltoid ligament during physiological ankle motion

BackgroundLength change pattern of the ankle deltoid ligament during physiological ankle motion is still confused currently and had not been studied in vivo.MethodsThe deltoid ligaments from 7 cadaveric specimens were dissected. Lengths of each band during 30° plantarflexion to 20° dorsiflexion were measured. A dual fluoroscopy imaging system was utilized to capture the images of hindfoot joint of 7 healthy subjects during the stance phase of walking. 3D bone models were reconstructed from CT images. Lengths of each band were calculated after model-image registration utilizing a solid modeling software. Percentage of length variation and poses when the bands were in maximum extension were documented among each band.ResultsThe anterior border of tibiocalcaneal ligament (TCL) had only 1.7% length variation in vitro and 5.7% length variation in vivo. The tibionavicular ligament, tibiospring ligament, and deep anterior tibiotalar ligament were in maximum extension at 30° plantarflexion, however, superficial posterior tibiotalar ligament, deep posterior tibiotalar ligament, and the posterior border of TCL were in maximum extension at 20° dorsiflexion. The tibionavicular ligament, tibiospring ligament, and deep anterior tibiotalar ligament were in maximum extension during foot flat. The TCL was in maximum extension during midstance. The superficial posterior tibiotalar ligament and deep posterior tibiotalar ligament were in maximum extension during heel off and toe off.ConclusionThe length of TCL did not change during ankle dorsiflexion and plantarflexion. The bands anterior to and posterior to the TCL showed different length change pattern during physiological ankle dorsiflexion and plantarflexion.     

Does routinely repairing deltoid ligament injuries in type B ankle joint fractures influence long term outcomes?

Deltoid ligament reconstruction following type B ankle fractures continues to generate a vivid discussion amongst trauma surgeons. There is a difference of opinion as to whether operative or non operative treatment should prevail. We therefore conducted a prospective comparative cohort study to determine whether it is necessary to routinely repair the injured deltoid ligaments. 41 Type B ankle joint fracture patients were enrolled, all the patients were associated with deltoid ligament ruptures and lateral/posterior-lateral dislocation of talus. After fixation of the lateral malleolus fracture, 12 patients were treated by superficial deltoid ligaments repairing, 16 patients with deep components augmentation, 13 patients had no direct surgical intervention. In the deep components group, the planter and the dorsi flexion was 3.2° (0-10°) and 8.8° (0-15°) less than the normal side. In the superficial components group, plantar and dorsi flexion was 0.8° (0-5°) and 4.2° (0-15°) less than the normal side. In the non-repairing group, the plantar and dorsi flexion was 2.4° (0-10°) and 5.6° (0-20°) less than the normal side. Overall, no significant statistical difference was observed comparing the 3 groups. In addition, no statistically significant inter-group differences were evident in terms of measurement of the ankle medial clear space and the clinical and functional outcomes recorded. In conclusion, the results of this study do not support routine exposure and repairing of the injured deltoid ligaments.     

Spring ligament insufficiency and hallux valgus as an independent risk factors for first ray instability

IntroductionFirst ray instability (FRI) arising from failed plantar/interosseous ligaments is strongly associated with planovalgus, leading to synovitis and deformity. Our hypothesis is that proximal spring ligament insufficiency (SLI) drives secondary FRI in the absence of hallux valgus (HV) and may be an independent risk factor.MethodsPatients with FRI, screened by Klaue’s test, were recruited. Patients’ normal contralateral feet with previous radiographs were included as controls. First ray dorsal translation was measured with a digital Klauemeter. Spring ligament integrity was assessed using lateral translation distance as an indirect measure of spring ligament strain. Intermetatarsal angle and hallux valgus angle were recorded to classify the severity of HV.ResultsSeventy feet included, 54 had symptomatic FRI and 16 were asymptomatic contralateral feet included as control. Twenty-three feet had moderate/severe HV and 47 had mild/normal HV. Moderate/severe HV was associated with FRI (OR, 10.31; p = 0.029). Forty-five feet with SLI had a strong association with FRI (OR, 100.7; p < 0.0001). SLI without moderate/severe HV was the most prevalent group (31/54), followed by SLI with moderate/severe HV, 29.63% (16/54). Moderate/severe HV without SLI was prevalent in 11.1% (6/54) and 1.85% (1/54) had no SLI or moderate/severe HV. In a multivariate logistic regression analysis model, both SLI and severe/moderate HV were independent predictors of FRI.ConclusionThis is the first study that links SLI and HV as independent risk factors to FRI. 98.15% of FRI can be attributed to SLI, HV or both. First ray instability may allude to the strong presence of spring ligament insufficiency in the absence of hallux valgus.Level of evidenceLevel III, retrospective cohort study.     

外踝骨折合并内侧副韧带损伤的治疗

目的观察外踝骨折合并内侧副韧带损伤时不修复损伤的韧带是否会损害患者的本体感觉,并探讨修复韧带辅助以综合运动康复是否有助于患者的功能恢复。方法回顾性分析自2009-06—2013-08诊治的37例外踝骨折合并内侧副韧带损伤但未修复韧带(A组)和94例旋后-外旋型踝部骨折(B组)患者的临床资料,并分析自2013-09—2015-07诊治的9例外踝骨折合并内侧副韧带损伤修复损伤韧带(C组)和32例旋后-外旋型踝部骨折(D组)患者的临床资料。采用星形偏移平衡试验(SEBT)和Cumberland踝部不稳定评分(CAIT)评估患者的功能恢复结局。结果所有骨折愈合良好,A组的SEBT和CAIT均低于B组,差异均有统计学意义(P0.05)。C组的SEBT和CAIT和D组比较,差异均无统计学意义(P0.05)。结论外踝骨折合并内侧副韧带损伤时不修复损伤韧带容易导致本体感觉不平衡和功能性踝关节不稳,修复损伤韧带并辅以综合运动康复可有效地降低这些并发症的发生率。     

The contribution of anterior deltoid ligament to ankle stability in isolated lateral malleolar fractures

The treatment of isolated lateral malleolar fractures with deltoid ligament rupture remains controversial. We prospectively analysed 35 patients with isolated lateral malleolar fractures during 2006–2013. Radiography and magnetic resonance imaging (MRI) were performed to assess the degree of reduction, ligament damage, and stability. Internal fixation was performed for all unstable valgus fractures with unacceptable fracture parameters. Fractures with residual valgus instability after fixation underwent anterior deltoid repair. The mean anterior deltoid ligament grade based on MRI was significantly different between the high-grade unstable group and the stable and low-grade unstable groups (p = 0.037 and 0.004, respectively). Postoperative medial clear space measurements were not significantly different between groups. MRI was shown to be a useful tool in the preoperative identification of isolated lateral malleolus fractures prone to valgus instability. In the case of high-grade unstable fractures of the lateral malleolus, repair of the anterior deltoid ligament is adequate for restoring medial stability.     

三角韧带与下胫腓联合韧带对踝关节稳定的生物力学影响

目的探讨三角韧带与下胫腓联合对踝关节稳定性的生物力学影响。方法采用6例新鲜踝关节标本,常规制成骨-韧带模型(标本可重复利用)。分为:A组:踝关节各韧带均完整;B组:三角韧带离断,下胫腓联合完整;C组:下胫腓联合离断,三角韧带完整;D组:下胫腓联合及三角韧带均离断;E组:锚钉修复三角韧带、螺钉固定下胫腓联合韧带组。对标本施加600 N轴向加载。分别测量三种体位(中立位、背伸10°位、跖屈20°位)在各种状态下胫距关节的接触面积、接触压力、压应力分布等变化。对比分析三角韧带及下胫腓联合韧带修复前后对踝关节稳定的作用。结果在三种体位下均可发现,随着下胫腓联合及三角韧带的离断,胫距关节接触面积逐渐减小,接触压力逐渐增大,与正常A组对比差异有统计学意义(P<0.05),压应力分布逐渐集中并有向外侧移位趋势;三角韧带与下胫腓联合修复前后的胫距关节的接触面积、接触压力等差异有统计学意义(P<0.05);修复后的胫距关节接触面积增大、接触压力减少,与正常组A组对比差异无统计学意义(P>0.05),压应力分布分散。结论三角韧带与下胫腓联合断裂后,距骨发生移位,胫距关节面接触面积、接触压力及压应力分布发生剧烈变化。目前骨锚钉修复三角韧带、螺钉固定下胫腓联合能获得即刻稳定,且其生物力学强度与正常组相似,推荐对三角韧带伴下胫腓联合损伤者行手术治疗以恢复其正常解剖关系。     

Deltoid ligament reconstruction with autologous gracilis tendon in chronic medial ankle instability after ankle fracture surgery: A case report

IntroductionThe repair of a deltoid ligament injury, following an ankle fracture with involvement of the syndesmosis, has no univocal consensus. Also the surgical strategies in case of a subsequent chronic instability are still under debate. In this work the result of a double bundle anatomic reconstruction of deltoid ligament with ipsilateral autologous gracilis muscle tendon is presented.Case reportA 50 year old active male patient came to our attention with a catastrophic medial ankle instability, a severe pronation of the hindfoot and disabling ankle pain. He reported a Weber type B fracture of the left ankle with a lesion of the syndesmosis treated with anatomic plate and screws and a transyndesmotic screw 8 months before. The imaging showed a complete deltoid ligament lesion. Due to the impossibility of a direct repair of the ligament, we performed the reconstruction of the medial ligamentous complex with an autologous gracilis tendon graft. 10 months after the medial ligamentous complex reconstruction, the patient showed an excellent recovery of walking ability, disappearance of pain under load and resumed an active lifestyle.DiscussionThe deltoid ligament has a key role in ankle joint stability and its integrity promotes the recovery after ankle fractures. However, its lesion is often left untreated in the acute setting. The result of a chronic untreated deltoid ligament injury could be extremely disabling and the ligament reconstruction, when an optimal native deltoid ligament repair is not achievable, is the choice to restore ankle function and stability.ConclusionIn the delayed treatment of a deltoid ligament rupture the described double bundle anatomic reconstruction with autologous tendon graft can be an effective and suitable option.     

Plantar fasciitis: Talonavicular instability/spring ligament failure as the driving force behind its histological pathogenesis

The aetiology of plantar fasciitis (PF) remains uncertain and to date, it is not known if there is an association with spring ligament laxity. In this study, 28 patients with unilateral plantar fasciitis were evaluated. A digital Klaumeter was used to assess first ray for instability and lateral plane translation was used as a measure of spring ligament laxity in the affected vs unaffected foot (internal control). Retromalleolar tenderness as a sign of a reactive tibialis posterior tendon was also assessed. The mean lateral translation score for symptomatic feet was 67.2 (95% CI [63.26−71.14]), compared to asymptomatic feet mean of 33.0 (95% CI [27.35−38.65] p < 0.05). The mean TMT instability score for symptomatic feet was 11.3 (95% CI [10.29–12.3]), compared to the asymptomatic feet mean of 5.9 (95% CI [4.49−7.31] p < 0.05). 100% of symptomatic feet had a retromalleolar tenderness over the tibialis posterior compared to 14% of asymptomatic feet. This is the first study to demonstrate a statistically significant increase in spring ligament strain in feet affected with PF using internal controls. The study postulates that tensile overload at the medial plantar fascia develops secondary to spring ligament failure regardless of foot shape. Furthermore, this condition can be regarded as an early warning sign of adult acquired flat foot disorder (AAFD). Future treatments for PF should not further destabilise the medial arch. This understanding may allow development of new treatment strategies in restoring spring ligament integrity to offload the plantar fascia strain.     

踝部骨折伴三角韧带损伤的手术治疗

[目的]比较不同手术方式对踝部骨折伴三角韧带损伤的治疗效果.[方法]回顾性分析2018年1月～2019年6月接受手术治疗的合并下胫腓分离和三角韧带损伤的踝关节骨折患者82例,依据术前医患沟通结果,将患者分两组.其中,41例开放复位骨折内固定同时行三角韧带修复(修复组),另外41例仅行开放复位骨折内固定,未修复三角韧带(...     

Evaluation of the integrity of the deltoid ligament in supination external rotation ankle fractures: a systematic review of the literature

Background and purpose  Review the literature concerning modalities to evaluate the integrity of the deltoid ligament in patients with supination external rotation ankle fractures. Methods  The electronic databases Pubmed/Medline, CINAHL and Embase were searched from 1987 to November 2007 to identify all published original studies concerning diagnostic modalities to evaluate the integrity of the deltoid ligament in adult ankle fractures. Results  This review included nine studies involving 423 ankle fractures. Three trails investigated medial tenderness; two studies, ecchymosis; two studies, swelling; one study, an injury radiograph; six studies, a type of radiographic stress view; one study, the Lauge-Hansen classification; one study, MRI; and one article studied arthroscopy in the evaluation of the deltoid ligament integrity. Interpretation  Swelling, ecchymosis, medial tenderness, initial injury radiographs and the Lauge-Hansen classification are less adequate predictors of the integrity of the deltoid ligament. Manual or the less painful variant, the gravity external rotation stress radiographs are considered the gold standard. The amount of medial clear space widening indicative of a positive external rotation stress test has been somewhat variable in the literature but ≥5 mm is generally regarded as most reliable. Achieving adequate external rotation of the foot when obtaining stress radiographs is more important than positioning the ankle in the appropriate degree of ankle flexion. The amount of applied force necessary when performing an external rotation stress radiograph is not well defined and mainly determined by the patient’s pain level. The indication for surgery should not be based on the absolute value of one parameter but on the combination of several parameters. If nonoperative treatment is chosen despite a positive stress radiograph, close follow-up is critical because subluxation of the ankle joint is still possible. MRI could be useful in individual cases.     

急性踝关节骨折伴三角韧带损伤术中诊断及治疗策略

目的探讨丝攻试验对三角韧带损伤的诊断价值,比较跨下胫腓联合螺钉固定与锚钉缝合修复三角韧带的疗效。方法 2011年6月至2013年12月,对我院收治的51例疑有三角韧带损伤的踝关节骨折患者进行丝攻试验,并将阳性患者随机分为锚钉缝合修补三角韧带组(A组)和跨下胫腓联合螺钉固定组(B组)。采用美国足踝骨科学会(AOFAS)踝-后足评分和疼痛视觉模拟评分(VAS)评价术后疗效。结果最终45例患者纳入统计学分析。A组21例,B组24例。A组有19例获得随访,平均随访14个月;B组有23例获得随访,平均随访18个月。末次随访时,A、B组患者均获得骨性愈合。A组AOFAS踝-后足评分和VAS评分分别为(87.50±6.30)分和(1.79±1.47)分,B组AOFAS踝-后足评分和VAS评分分别为(85.20±7.54)分和(1.56±1.20)分。两组AOFAS踝-后足评分和VAS评分差异无统计学意义。B组复位不良率达34.8%,A组仅为5.26%。结论三角韧带的完整性是影响下胫腓联合分离和内侧踝穴增宽的重要因素,修补三角韧带与跨下胫腓联合螺钉固定疗效相当,但其复位不良率低,且无二次取钉及断钉等问题。丝攻试验对于三角韧带损伤诊断和手术效果评估具有重要价值。     

经皮踝外侧韧带复合体重建治疗慢性踝外侧不稳

[目的]探讨经皮功能重建踝关节外侧韧带复合体治疗慢性踝关节不稳的临床疗效。[方法]2014年1月~2018年2月,符合纳入标准的47例慢性踝关节不稳患者随机分为两组,其中,切开组23例采用常规切开术式重建距腓前韧带(ATFL)和跟腓韧带(CFL),经皮组24例采用超声定位,经皮建立骨隧道重建ATFL和CFL。比较两组间手术时间、围术期并发症、踝背伸-跖屈活动度(ROM)、AOFAS评分、VAS评分,应力位影像测量距骨前移度和倾斜度。[结果]术中切开组2例出现腓浅神经损伤。经皮组手术时间、切口总长度显著小于切开组,差异有统计学意义(P<0.001)。切开组术后4例切口边缘处坏死,而经皮组1例切口渗液。两组患者随访26~30个月,平均(27.39±2.51)个月。术后6个月时,经皮组ROM显著大于切开组(P<0.05)。随时间推移两组患者AOFAS评分均显著增加,而VAS评分显著减少(P<0.001),但是两组相同时间点AOFAS评分和VAS评分的差异均无统计学意义(P>0.05)。应力位X线测量方面,术后两组患者距骨前移距度和距骨倾斜角均较术前显著减少(P<0.001)。但是两组相同时间点在距骨前移距度和距骨倾斜角的差异均无统计学意义(P>0.05)。[结论]经皮踝关节外侧韧带复合体重建治疗慢性踝关节不稳的效果与常规开放手术相当,但具有手术时间短、创伤小、并发症少的优点。     

自体半腱肌腱重建距腓前韧带和跟腓韧带治疗慢性踝关节外侧不稳

目的对应用自体半腱肌腱解剖重建距腓前韧带和跟腓韧带治疗慢性踝关节外侧不稳的疗效进行评价。方法采用自体半腱肌腱解剖重建距腓前韧带和跟腓韧带治疗慢性踝关节不稳12例,术后将踝关节固定于中立略外翻位6周．第7周开始去石膏行踝关节功能锻炼。末次随访时采用AOFAS评分对疼痛、功能、外形进行评价。结果疼痛评分：术前0～30分,平均（20．83±7．93）分;术后30～40分,平均（32．50±4．52）分;术后较术前明显提高,差异有统计学意义（t=-7．000．P〈0．001）。功能评分：术前14～39分,平均（28．08＋9．19）分;术后40—50分,平均（48．17±3．41）分;术后较术前明显提高．差异有统计学意义（t=-9．413,P〈0．001）。外形无明显变化,手术前后评分均为10分。总分：术前26—79分,平均（58．08±16．76）分;术后80～100分,平均（90．67±6．48）分;术后较术前明显提高,差异有统计学意义（t=-9．475,P〈0．001）。结论采用自体半腱肌腱解剖重建距腓前韧带和跟腓韧带是治疗慢性踝关节外侧不稳的可靠方法。     

自体腓骨短肌腱重建距腓前韧带和跟腓韧带治疗慢性踝关节外侧不稳定

目的:探讨自体腓骨短肌腱重建距腓前韧带和跟腓韧带治疗慢性踝关节外侧不稳定的临床疗效.方法:回顾性分析2016年7月至2019年7月采用自体腓骨短肌腱解剖重建距腓前韧带和跟腓韧带治疗的42例慢性踝关节外侧不稳定患者,其中男30例,女12例;年龄25～46(37.6±12.4)岁;左足15例,右足27例;受伤至手术时间3～...     

Reconstruction of superficial deltoid ligaments with allograft tendons in medial ankle instability: A technical report

BackgroundDeltoid ligament insufficiency can cause arthritic changes with various symptoms in the ankle joint. However, reconstruction procedures of the medial collateral and deltoid ligaments have drawn less attention than those of the lateral ankle ligaments. Few techniques for reconstructing deltoid ligaments are available, and those that are can be complex.ObjectiveWe introduce a new surgical method for reconstructing superficial deltoid ligaments that is simple and straightforward.ConclusionWith this method, the tibionavicular and tibiocalcaneal ligaments can be reconstructed efficiently and easily.     

自体半腱肌重建外侧副韧带治疗慢性踝关节外侧不稳的疗效分析

目的 :探讨采用自体半腱肌重建外侧副韧带治疗慢性踝关节外侧不稳的临床疗效。方法 :回顾性分析2014年9月至2016年11月采用自体半腱肌肌腱重建踝关节外侧副韧带治疗28例踝关节外侧不稳患者的临床资料,其中男20例,女8例;平均年龄28.6岁(18~47岁)。记录围术期并发症,并采用美国足踝外科协会(American Orthopaedic Foot and Ankle Society,AOFAS)踝关节评分标准评价术后功能改善情况,采用视觉模拟标尺法(Visual analogue scale,VAS)评估患者术后疼痛情况。结果 :28例患者均获得随访,时间6~28个月,平均18.2个月。围术期未出现医源性骨折及切口感染等严重手术并发症。末次随访时未出现踝关节不稳或踝关节活动受限,未出现膝部肌腱供区肌肉功能障碍。AOFAS评分由术前的53.1±6.8提高至术后的90.4±5.9,差异有统计学意义(P0.05)。VAS评分由术前的6.3±1.7提高至术后的0.8±0.5,差异有统计学意义(P0.05)。结论:采用自体半腱肌解剖重建踝关节外侧副韧带手术方式简便,术后恢复好,无严重并发症,临床疗效好,是治疗慢性踝关节外侧不稳的可靠方法之一。     

旋后-外旋型踝关节骨折中三角韧带断裂的诊断与治疗

旋后-外旋型或Weber B型踝关节骨折存在稳定型和不稳定型骨折。不稳定性骨折通常在腓骨骨折的同时存在内踝的骨折或三角韧带的撕裂。现在的共识是对于不稳定型的踝关节骨折,采取切开复位内固定的方式能达到较好的临床疗效。对于内侧韧带撕裂的诊断有很多研究,但对于评估内侧韧带撕裂的最合适方法仍未达成共识。由于外旋引起的三角韧带断裂的患者数量要远比过去想象中的多。在Lauge-Hansen分型中,根据损伤的机制可以提供可能的韧带损伤的信息。通过X线的表现,运用Lauge-Hansen分型系统在评估三角韧带是否损伤具有重要的价值,但其敏感性和特异性有待考究。体格检查、应力位X线片、MRI、关节镜、B超现在已用于踝关节骨折中内侧副韧带的完整的评估,但是这些方法没有一种是便宜、简便、可靠的。现在临床医师习惯使用重力应力试验进行评估,对于可疑的病例,行关节镜探查是非常有价值的。最新的观点认为单纯腓骨骨折,可仅行腓骨骨折切开复位内固定术,对合并外踝骨折的三角韧带撕裂进行修复是没有意义的,也没有证据证明暴露并修复三角韧带对内踝结构有影响。