预置阻挡钉在治疗胫骨螺旋形骨折合并后踝骨折中的作用

目的 探讨预置阻挡钉在治疗胫骨中下1/3 螺旋形骨折合并后踝骨折中的作用.方法 回顾性分析2018 年5月至2020 年6 月收治的24 例胫骨中下1/3 螺旋形骨折合并后踝骨折患者临床资料.所有患者均采用预置阻挡钉技术,并进行髓内钉及空心钉内固定治疗.术后记录胫骨正位 X 线片上冠状面力线(胫骨远端外侧角)、膝关节疼...     

CT和MRI在胫腓骨螺旋骨折合并后踝隐匿性骨折中的诊断价值

目的 探讨CT、MRI在胫腓骨螺旋骨折合并后踝隐匿性骨折中的诊断价值.方法 对2007年7月至12月收治的39例胫腓骨螺旋骨折合并后踝隐匿性骨折患者的资料进行分析,其中男30例,女9例;平均年龄39.9岁;左侧15例,右侧24例.39例患者术前均行X线、CT和MRI检查,根据结果做出诊断并分别统计上述方法对后踝隐匿性骨折的显示情况. 结果 本组胫腓骨螺旋骨折同时合并后踝骨折30例,胫骨螺旋骨折合并后踝骨折7例,腓骨螺旋骨折合并后踝骨折2例.患者后踝均为斜形裂纹骨折,其中长斜形骨折30例,短斜形骨折9例;后踝骨折轻度分离7例.X线片、CT、MRI对后踝骨折的诊断准确率分别为10.3%、94.9%、100%,假阴性率分别是89.7%、5.1%、0,假阳性率均为0. 结论 CT、MRI可以提高胫腓骨螺旋骨折患者合并后踝隐匿性骨折的诊断率.MRI是显示后踝隐匿性骨折最敏感的检查方法.     

Posterior malleolar fracture is often associated with spiral tibial diaphyseal fracture: a retrospective study

BACKGROUND: It is known that posterior malleolar fracture is often associated with tibial diaphyseal fractures. However, in literature there are very few studies on tibial shaft fractures with respect to posterior malleolus fragment. We hypothesized that the incidence of posterior malleolar fracture is higher than in previous studies. METHODS: A total of 74 closed tibial shaft fractures were treated with intramedullary nailing in Turku University Central Hospital between January 1994 and December 1998. There were 55 men and 19 women, with a mean age of 39 years (range, 16 to 58 years). Two cases were excluded and 72 tibial shaft fractures were analyzed retrospectively. RESULTS: Posterior malleolar fracture was observed in 18 cases (25.0%). Only 10 were observed preoperatively in plain films, seven were detected postoperatively and one was not detected at all during the treatment. Retrospectively, all 18 posterior malleolar fractures were detectable in preoperative plain films. CONCLUSION: A fracture of the posterior malleolus was involved in every fourth tibial diaphyseal fracture. The fractures of the posterior malleolus were always detected in preoperative plain films and should be suspected, especially in cases of low-energy spiral distal tibial diaphyseal fractures. We recommend additional plain films to be taken at the ankle region to better visualize these fractures.     

The effect of minimally displaced posterior malleolar fractures on decision making in minimally displaced lateral malleolus fractures

Purpose

Despite the high incidence of cases of minimally displaced lateral or posterior malleolus ankle fractures, treatment guidelines are still an issue of controversy. The purpose of this study was to delineate treatment preferences among orthopaedic surgeons in these fractures with and without concomitant posterior malleolus fractures. We hypothesized that concomitant minimally displaced fractures of the posterior malleolus can shift treatment preference towards operative intervention.

Methods

A questionnaire-based study was conducted among orthopaedic surgeons attending the 2012 European Federation of National Associations of Orthopaedics and Traumatology Conference (EFORT) in Berlin, Germany. Treatment preferences were reported for minimally displaced lateral malleolus fractures seen on radiographs and were then compared with treatment preferences when computed tomography (CT) was added revealing a concomitant minimally displaced posterolateral fracture of the posterior malleolus.

Results

The cohort comprised 177 surgeons from all six continents. When radiographs showing a minimally displaced lateral malleolus fracture were presented, nonoperative management was indicated by 35 % (62) of participants, whereas 65 % (115) preferred operative intervention. After CT views were added showing an accompanying minimally displaced posterolateral posterior malleolus fracture, 79 % (140) suggested operative intervention and only 21 % (37) advocated nonoperative management (p = 0.03).

Conclusions

Most surgeons prefer open reduction with internal fixation for minimally displaced lateral malleolar fractures. The presence of concomitant posterior malleolus fractures in these cases shifts treatment preference further towards open reduction with internal fixation. Because the posterior malleolus fragment might not be well delineated on standard ankle radiographs, a high index of suspicion is warranted, and the use of CT should be considered in these cases.     

Distal articular involvement in tibial shaft fractures: an evaluation of 125 consecutive cases

Purpose

To report the incidence and morphology of ipsilateral distal articular involvement (DAI) in a consecutive series of tibial shaft fractures.

Method

A retrospective review was performed on 115 patients who underwent intramedullary nailing for tibia shaft fractures. Ankle evaluations included preoperative radiographs and computed tomography (CT) scans in all patients.

Results

Thirty-two patients (27.8%) in our series presented with tibial shaft fractures associated with DAI. Tibial spiral fractures (42A1) were significantly related to DAI (RR: 1788). In 28 (87.5%; 28/32) articular fractures, posterior malleolus fractures (PMF) were present; 22 were isolated, and six (18.8%) occurred in combination with medial malleolus or anterolateral fractures. The remaining (12.5%; 4/32) were isolated medial malleolus fractures. Ten (31.2%; 10/32) articular fractures were occult on the radiographs and only detected on CT scan.

Conclusion

DAI is common in tibial shaft fractures. CT evaluation is mandatory due to the high number of occult fractures. Although isolated PMF is the most frequent pattern of DAI involvement, 31.3% of the cases exhibited different patterns.

     

胫骨下1/3螺旋形骨折合并隐匿性后踝骨折的治疗分析

目的探讨胫骨下1/3螺旋形骨折合并隐匿性后踝骨折的发生原因、受伤机制和治疗方案。方法于2005年2月至2011年6月收治胫骨下1/3螺旋形骨折22例,其中有显性后踝骨折6例。采用胫骨髓内钉固定8例,胫骨下端前侧钢板1例,胫骨前外侧钢板13例;2例腓骨中段骨折采用重建钢板固定,其余腓骨均未固定。结果术中有4例患者在应用前外侧钢板固定最远端时发现隐匿性后踝骨折并移位,1例采用胫骨髓内钉的患者术后1个月复查X线片发现隐匿性后踝骨折伴移位。结论术前没有CT、MRI检查能够确诊后踝骨折类型和大小时,胫骨下端前外侧钢板可作为首选的内固定。     

胫骨干骨折伴同侧后踝骨折的诊断与治疗

目的 探讨胫骨干骨折伴同侧无移位的后踝骨折的损伤机制与防治. 方法 2001年5月至2004年11月,共收治34例胫骨干骨折伴后踝骨折,2例为开放性骨折.手术前摄胫腓骨全长和踝关节x线片,发现或怀疑有后踝骨折者,均予CT检查,术中先予后踝骨折块经皮螺钉固定,再行胫骨髓内钉手术治疗. 结果所有患者平均随访时间11个月.33例患者骨折愈合良好,踝关节功能优良.1例患者术前漏诊,随访时发现后踝骨折,踝关节疼痛功能差. 结论胫骨干合并后踝骨折在临床常见,后踝骨折漏诊是后期踝关节功能障碍的主要原因,术前踝关节CT检查及术中后踝精确固定是防治的关键.     

Spiral fractures of the shaft of the tibia. Initial displacement and stability of reduction

We have analysed the initial displacement and the retention of position after reduction of 192 spiral fractures of the tibial shaft. In fractures with an initial lateral displacement of one half the width of the shaft or more, successful retention of position after the primary closed reduction was achieved in only 18%. The direction of displacement between the tibial fragments showed little variation; the proximal fragment was always medial and anterior to the distal. This resulted in an increased space between the proximal tibial fragment and the shaft of the fibula in the plane of the interosseous membrane. There was a strong correlation between the initial displacement and the initial shortening. No evidence of a posterior soft-tissue hinge, able to facilitate closed reduction, could be found. Consequently, in treating severely displaced spiral fractures, open reduction and internal fixation or a few weeks' initial calcaneal traction seem to be the rational alternatives.     

Ankle injuries in distal tibial spiral shaft fractures: results from an institutional change in imaging protocol

Introduction

Posterior malleolus and other articular ankle injuries are known to concomitantly occur with tibial shaft fractures, especially spiral fractures of the distal one-third diaphysis. Due to our heightened awareness of this combined injury, our department instituted a new preoperative ankle imaging protocol for all distal one-third spiral tibia shaft fractures. The purpose of this study was to evaluate the effectiveness of an imaging protocol involving radiographs, CT and magnetic resonance imaging (MRI) in a distal one-third spiral tibia fracture cohort.

Materials and methods

All operatively treated patients with a spiral distal one-third tibial shaft fracture from February 2012 to March 2013 underwent a standardized ankle imaging protocol. Patients had preoperative orthogonal ankle radiographs as well as a CT scan of the tibia that included the ankle. All ankle imaging was scrutinized for evidence of an ankle injury. If no ankle fracture was identified, patients would then undergo an ankle MRI.

Results

Twenty-five patients met the inclusion and exclusion criteria for this study. Concomitant osseous ankle injuries were identified by radiograph and CT in 56 % (14/25) of cases. The remaining 44 % (11/25) of patients had no evidence of a combined injury by radiograph or CT and therefore underwent an MRI. Of the MRI cohort, 64 % (7/11) were found to have an occult ankle fracture. The overall incidence of a combined injury using our protocol was 84 % (21/25). Identification of an occult injury led to a change in management for all of these patients.

Conclusions

Concomitant ipsilateral ankle and distal one-third spiral tibial shaft fractures are more common than previously reported. Utilizing a new imaging protocol, we found that the incidence of this combined injury was 84 %. Recognition of the ankle fracture component in this tibial shaft cohort can be important as it may alter the surgical plan and postoperative management.     

Pathoanatomy of posterior malleolar fractures of the ankle

BACKGROUND: The functional outcome following ankle fractures that involve a posterior malleolar fragment is often not satisfactory, and treatment of this type of fracture remains controversial. Thorough knowledge of the pathologic anatomy of the posterior malleolar fracture is essential for planning appropriate treatment. Thus, we conducted a computed tomographic study to clarify the pathologic anatomy of the posterior malleolar fracture. METHODS: Between 1999 and 2003, fifty-seven consecutive patients with a unilateral ankle fracture with one or more posterior fragments were managed at our hospital. We reviewed the patients' preoperative computed tomographic scans to determine (1) the ratio of the posterior fragment area to the total cross-sectional area of the tibial plafond and (2) the angle between the bimalleolar axis and the major fracture line of the posterior malleolus. Each fracture was categorized according to the location of the major fracture line on the computed tomographic image at the level of the tibial plafond. RESULTS: The fifty-seven fractures were categorized into three types: (1) the posterolateral-oblique type (thirty-eight fractures; 67%), (2) the medial-extension type (eleven fractures; 19%), and (3) the small-shell type (eight fractures; 14%). Two of the eleven medial-extension fractures extended to the anterior part of the medial malleolus. A total of nine of the eleven medial-extension fractures actually consisted of two fragments [corrected] The conditions are not exclusive of one another; for example, in the case of one of the fractures exhibiting two fragments, the fracture also extended to the anterior part of the medial malleolus [corrected] The average area of the fragment comprised 11.7% of the cross-sectional area of the tibial plafond for posterolateral-oblique fractures and 29.8% for medial-extension fractures. In the cases of seven of the nine fractures that comprised >25% of the tibial plafond, the fracture line extended to the medial malleolus. The angles between the bimalleolar axis and the major fracture line of the posterior malleolus varied. CONCLUSIONS: The fracture lines associated with posterior malleolar fractures appear to be highly variable. A large fragment extending to the medial malleolus existed in almost 20% of the posterior malleolar fractures in the current study, and some fragments involved almost the entire medial malleolus. Because of the great variation in fracture configurations, preoperative use of computed tomography may be justified. The information obtained from this study will be helpful for conducting basic research of this condition and for determining appropriate surgical approaches.     

Flexible medullary nailing of tibial shaft fractures

Fifty-two tibial shaft fractures in 50 patients were treated with flexible medullary nails (Ender type). In 32 cases the fracture was closed and in the remaining 28 cases the fracture was open. Forty-eight of the 52 fractures united in an average time of 16.8 weeks and there were no cases of deep infection or osteomyelitis. Nonunion in four patients required a secondary procedure to obtain union. Flexible medullary nailing is an excellent method for fixation of tibial shaft fractures because it combines the benefits of closed nailing and functional bracing while minimizing the disadvantages of each. Three-point fixation within the medullary canal maintains length alignment and avoids rotational problems. Nailing is done by closed methods without reaming. The technique allows early weight-bearing in a patellar tendon bearing cast or functional brace. Dynamic controlled motion at the fracture site leads to early callus formation which is biomechanically and biologically favorable. The procedure is relatively easy to perform, short in duration, and requires little specialized equipment. Flexible medullary nailing is an alternative treatment modality for selected open and closed displaced tibial shaft fractures.     

Treatment of unstable closed tibial shaft fractures by external fixation

The fracture of tibia shaft is one of the most common fracture of long bones. The authors bring out the results of the treatment of 90 patients with unstable closed tibial shaft fractures treated by the use of Mitkovic external fixation systems. Within the analayzed group there were 66 (73%) male and 24 (27%) female. The average patients age was 43.9 years (range 15 to 82). Excellent result in treatment of unstable closed tibial shaft fractures with external fixation were achieved in 15 (16,7%) patients, very good in 38 (42,2%) patients, good in 24 (26,7%), poor in 9 (10%) and bad in 4 (4,4%) patients. With 4 (4,4%) patients pseudoarthrosis was formed. Additional treatment of patients with pseudoarthrosis (spongioplastic and placing of CD device) led to pseudoarthrosis healing. Within the analyzed group in all patients treated with extenal fixation there were no registered cases of postoperative osteitis. External fixation by the use of Mitkovic external fixation is one of the method of choose in the treatment of unstable closed tibial fractures, providing dynamic and balanced biomehanical conditions for fracture healing.     

Tension band fixation of medial malleolus fractures.

A prospective study on tension band fixation of medial malleolus fractures was performed on 30 consecutive patients with 31 fractures from October 1987 until December 1990. All patients had at least a displaced medial malleolus fracture unreduced by closed methods. The fractures were classified into small, medium and large using a modified Lauge-Hansen classification. There were no nonunions or movements of wires postoperatively and only two patients had subjective complaints with reference to the wires that required hardware removal. There was one 2-mm malreduction and one patient with a wound slough and subsequent osteomyelitis. One fragment had 2 mm of displacement after fixation but went on to union. A biomechanical study was undertaken to compare fixation of the medial malleolus with K wires alone, K wires plus a tension band, and two cancellous screws. The tension band fixation provided the greatest resistance to pronation forces: for times stiffer than the two screws and 62% of the intact specimen. Tension band fixation of the medial malleolus is a biomechanically strong and clinically acceptable method of treatment for displaced medial malleolus fractures. This method of fixation may be especially useful for small fragments and in osteoporotic bone.     

Outcomes of posterior malleolar fixation in ankle fractures in a major trauma centre

AimsOngoing controversy exists over the indications and benefits of posterior malleolar fixation in ankle fractures. The aim of this pragmatic study was to evaluate the outcomes of posterior malleolar fracture fixation in ankle fractures in the setting of a major trauma centre. Our hypothesis is that posterior malleolus fixation leads to improved clinical outcomes.MethodsA total of 320 patients were identified with operatively treated ankle fractures involving a posterior malleolus component, at our institution between January 2012 and January 2018, ensuring a minimum 2 year follow-up. Of these patients, 160 had the posterior malleolus fixed as part of their surgery and 160 did not. Patient demographics, surgical details and complications were assessed. The Manchester-Oxford Foot Questionnaire (MOXFQ) was the primary patient outcome measure.ResultsFixation of the posterior malleolus was associated with a statistically significant improvement in patient outcomes. Mean MOXFQ score in the unfixed posterior malleolus group was 24.03 (0 - 62), compared to 20.10 (0 - 67) in the fixed posterior malleolus group (p = 0.04). Outcomes were worse with increasing size of posterior malleolar fragment. Metalwork-related issues were higher in the posterior malleolus fixed group (24/160 (15%) versus 10/160 (6.2%)) and re-operation rate was double.ConclusionThis study demonstrates that in the practical setting of a major trauma unit, fixation of the posterior malleolar fracture leads to improved patient outcomes but with increased metalwork risks and reoperation rates.     

采用闭合复位经皮空心拉力螺钉固定治疗儿童闭合性胫骨干骨折的疗效观察

目的 观察和评估闭合复位经皮空心拉力螺钉内固定治疗儿童胫骨干骨折的疗效.方法 2015年1月至2018年12月,福建泉州市正骨医院小儿骨科采用闭合复位经皮空心拉力螺钉内固定治疗闭合性胫骨干骨折的患儿64例;男50例,女14例;平均年龄7.5(5～13)岁.依据Johner和Wruhs的字母数字组合分类法对单纯斜形或螺旋...     

同侧股骨干、胫骨多段骨折的治疗

目的同侧股骨干、胫骨多段骨折固定的意义。方法本组32例分别采用加压钢板、带锁髓内钉、单边外固定架固定。结果随访6个月～3年，骨折愈合，肢体功能恢复参照HSS计分方法，优25例，占80．6％；良4例，占12．9％；差2例，占6．4％。结论同侧股骨干、胫骨多段骨折采用急诊手术固定，选择对骨折端扰乱较小的外固定架和加压钢板、带锁髓内钉固定治疗，是防止并发症，降低致残率，早期功能锻炼，恢复肢体功能的较好方法。     

Marginal plafond impaction in association with supination-adduction ankle fractures: a report of eight cases

In five years, approximately 800 ankle fractures were seen at the authors' institution, forty-four (5 percent) of which were of the supination-adduction pattern. Nineteen of these injuries had displaced vertical medial malleolus fractures, of which eight (42 percent) showed marginal impaction of the tibial plafond. All eight patients underwent open reduction and internal fixation with elevation of the impacted articular component and had good to excellent functional outcome with no arthritis on radiograph at the time of the most recent follow-up. The index of suspicion of marginal impaction of the tibial plafond should be high when treating supination-adduction pattern ankle fractures with displaced medial malleolus.     

累及后踝的踝关节骨折的手术治疗

目的探讨累及后踝的踝关节骨折的损伤机制、手术方法和治疗效果。方法自2008年7月至2012年3月间,手术治疗累及后踝的踝关节骨折共42例,男30例,女12例,应用Lauge-Hansen分类,旋后外旋型21例,旋前外旋型12例,旋前外展型9例。后踝骨折根据CT分类,Ⅰ型22例,Ⅱ型12例,Ⅲ型8例。后踝骨折根据骨块大小和关节面的塌陷情况,采用后侧支撑钢板或多枚拉力螺钉固定。结果 42例均获随访,随访时间12~24个月,骨折愈合时间10~18周。根据美国足与踝关节协会(American orthopaedic foot and ankle society,AOFAS)评分,优21例,良15例,可6例,优良率为85.7%。结论累及后踝的踝关节骨折,常伴有胫骨远端关节面塌陷和踝关节后脱位或半脱位,根据骨折类型选择手术方式和固定方法,可保证踝关节获得解剖复位,最大限度恢复踝关节功能。     

Operative Management of AO Type 44 Ankle Fractures: Determinants of Outcome

The consequences of inadequate treatment of ankle fractures can be disastrous. We assessed the radiologic and functional outcomes, postoperative quality of life (QOL), and its determinants for patients treated operatively for AO type 44 ankle fractures. Evidence is lacking concerning the management of posterior malleolus fractures and syndesmotic injuries. Our retrospective adult cohort study included 432 AO/OTA type 44 ankle fractures (431 patients). The median follow-up period was 52 months. Outcomes were assessed from the medical records, radiographs, American Orthopaedic Foot and Ankle Society (AOFAS) ankle scale (functional outcome), and EuroQol EQ-5D questionnaires. The median AOFAS scale score was 88; 27.9% of patients reported restricted mobility and 40.4% pain or discomfort. In 8.8%, radiographic failure was observed. The presence of posterior malleolus fractures was significantly associated with poor functional outcomes, and a postoperative step-off correlated with radiologic failure, poor functional outcome, and poor postoperative QOL. Late syndesmotic screw removal was associated with worse EQ-5D time trade-off QOL scores. A substantial number of patients experienced functional impairment, discomfort, and pain. Syndesmotic injury was associated with ankle joint failure and poor functional outcomes. Our data indicate that all displaced posterior malleolus fracture fragments affecting the posterior articular tibial surface in patients aged ≤65 years require anatomic reduction.