Syndesmotic screws, unscrew them, or leave them? A systematic review and meta-analysis of randomized controlled trials

Background

Syndesmotic injuries are frequently stabilized using syndesmotic screws. Traditionally, these screws were routinely removed during the postoperative period, however recent literature has brought into question the necessity of routine removal, citing no change in functional outcomes and the inherent risks of a second surgery. Our study aimed to compare outcomes of patients undergoing routine syndesmotic screw removal versus those undergoing an on-demand approach to removal.

Methods

A systematic search of studies comparing routine syndesmotic screw removal to on-demand screw removal following an acute ankle fracture, or an isolated syndesmotic injury was conducted across seven databases. Only Prospective randomized controlled trials were eligible for inclusion. Data reported on by at least 2 studies was pooled for analysis.

Results

Three studies were identified that met inclusion and exclusion criteria. No significant difference in Olerud-Molander Ankle Score (MD -2.36, 95% CI -6.50 to 1.78, p = 0.26), American Orthopedic Foot and Ankle Hindfoot Score (MD -0.45, 95% CI -1.59 to .69, p = 0.44), or dorsiflexion (MD 2.20, 95% CI -0.50 to 4.89, p = 0.11) was found between the routine removal group and on-demand removal group at 1-year postoperatively. Routine removal was associated with a significantly higher rate of complications than on-demand removal (RR 3.02, 95% CI 1.64 to 5.54, p = 0.0004). None of the included studies found significant differences in pain scores or range of motion by 1-year postoperatively.

Conclusion

Given the increased risk of complications with routine syndesmotic screw removal and the comparable outcomes when screws are retained, an as-needed approach to syndesmotic screw removal should be considered.

A systematic review of posterior pilon variant fractures

Posterior pilon variant ankle fractures (PPVF) are a unique subtype of posterior malleolar fractures which have been a source of controversy and confusion in recent years. There has not been a thorough literature review previously written on the topic. Database searches of PubMed and Embase were conducted from inception until June 2023. The key words included "pilon variant," "posterior pilon variant," and "posterior pilon" fractures. Outcomes were evaluated by union time, rates of delayed union, nonunion, malunion, and complication. A total of 15 articles relevant to surgical repair of pilon variant fractures were included in the literature review. The unique mechanism of injury has been reported to involve both rotational and axial forces, leading to involvement of the posterior and medial aspects of the distal tibia. Pilon variant fractures can be suspected by several characteristics on radiographs and have a high confirmation rate via CT images. Multiple systems have been proposed to classify this fracture pattern, but there is no consensus on the ideal classification system. Surgically, direct fixation has shown better short-term clinical outcomes versus indirect fixation or no fixation. PPVF have a distinct fracture pattern involving the posterior and medial columns of the distal tibial plafond, and results from a mechanism intermediate to rotational and axial forces. These fractures are more severe than tri-malleolar fractures due to increased rates of articular impaction and incongruity. Future classification systems should focus on joint surface area and the tibial pilon column involved to avoid confusion with less severe posterior malleolar fractures.

Radiologic evaluation of ankle fracture malunions of the fibula

Ankle fractures involving the distal fibula are common injuries. Malreductions and subsequent malunions of the distal fibula can result in worse clinical outcomes and posttraumatic arthritis. The ability to accurately evaluate and identify malreductions and malunions of the distal fibula is important. A number of different radiographic and CT measurements have been described to assess fibular length and rotation. This review highlights various radiologic measures and discusses their advantages and limitations.

Epidemiology and Characteristics of Ankle and Foot Injuries in Electric Scooter-Related Accidents

Background

The use of electric scooters (e-scooters) continues to increase as a simple, inexpensive means of transport, resulting in a sharp increase in the incidence of scooter-related accidents. No study to date has closely examined the injury extent to the lower leg, joints, and extremities from e-scooter-related accidents. Here, we investigated the epidemiology and injury patterns of such accidents, focusing on injuries to the ankle and foot.

Methods

Based on data from a single tertiary hospital's database, the demographics of 563 patients with scooter-associated injuries were analyzed retrospectively. Among the patients, 229 patients who were injured by e-scooter riding were further investigated. Based on the data, the general demographics of whole scooter-associated injuries and the injury characteristics and fracture cases of the lower leg, ankle, and foot were analyzed.

Results

During the 4-year study period, the number of patients injured by e-scooters increased every year. Lower extremities were the most common injury site (67.2%) among riders, whereas injuries to the head and neck (64.3%) were more common in riders of non-electric scooters. Among the lower leg, ankle, and foot injuries of riders (52 cases), the ankle joint (53.8%) was the most commonly injured site, followed by the foot (40.4%) and lower leg (21.2%). The fracture group scored significantly higher on the Abbreviated Injury Scale than the non-fracture group (p < 0.001). Among the fracture group (20 cases), ankle fractures (9 cases) were most common, including pronation external rotation type 4 injuries (4 cases) and pilon fractures (2 cases). Five patients (25%) had open fractures, and 12 patients (60%) underwent surgical treatment.

Conclusions

The ankle and foot are the most common injury sites in e-scooter-related accidents. Given the high frequency and severity of e-scooter-related ankle and foot injuries, we suggest that more attention be paid to preventing these types of injuries with greater public awareness of the dangers of using e-scooters.

Range of motion measurements do not correlate with patient reported outcome measures in the early post-operative period following ankle fracture

BACKGROUND

Early mobilization following ankle fracture open reduction and internal fixation (ORIF) improves long-term patient functionality. Because of this, numerous resources have been spent to increase patient adherence to post-operative mobilization, with range of motion (ROM) measurements generally considered an important outcome in patient recovery. In this study we investigated how ankle ROM correlates to patient function, self-sufficiency in performing activities of daily living (ADLs), and pain in the early post-operative period.

METHODS

This was a prospective, observational study on patients undergoing ORIF of ankle fractures. We collected patient reported outcome measures (PROMs) and ROM measurements at the 2-week, 6-week, 12-week, and 6 month post-operative visit. We collected three PROMs: pain intensity (VAS), pain self-efficacy questionnaire (PSEQ-2), and foot and ankle ability measurement (FAAM). ROM of the ankle was measured by goniometer. ANOVA and post-hoc Tukey tests were used to examine statistical differences in PROMs over time. Pearson correlation tests were used to examine the association between ROM and PROMs.

RESULTS

One-hundred and twenty-three participants enrolled in this study in the perioperative period. Pain intensity was higher at enrollment compared to week 6 (post-hoc p = 0.006), after which pain intensity did not differ significantly. FAAM scores for activities or daily living (ADL) were increased at all study visits compared to enrollment (post-hoc p < 0.001). FAAM-Sports scores were higher compared to enrollment at the week 12 and 6 month visits (post-hoc p < 0.001). No significant improvements in goniometer measurements were noted across any timepoints. There were no significant correlations between ROM and PROMs at any of the study visits.

CONCLUSION

In our cohort of patients, there was no correlation between ROM and patient pain, self-efficacy or functionality in the early post-operative period following ankle ORIF. The lack of correlation between PROMs and ROM indicates that ROM may be both a poor indicator of patient improvement for physicians to guide post-operative treatment as well as a poor motivator for patient adherence to post-operative exercises. In the future, it is important to study reliable outcome measures in early recovery that can be utilized to track patient recovery from ankle ORIF.

[Influencing factors of traumatic arthritis after ankle fracture surgery and construction of risk prediction model]

OBJECTIVE

To explore risk factors of post-operative traumatic arthritis in patients with ankle fracture,and to establish risk prediction model.

METHODS

Totally 550 patients with ankle fracture treated from May 2020 to May 2022 were selected as research objects and divided into modeling group (385 patients) and verification group (165 patients) according to 7:3. In modeling group,patients were classified as occurrence group (112 patients) and non-occurrence group (273 patients) according to whether traumatic arthritis occurred after opertaion. Age,body mass index(BMI),gender,smoking history,diabetes history,injury type,fracture type,operation time,manual labor,open injury,osteoporosis,poor reduction,postoperative weight-bearing time,vascular injury,and surgical method were recorded; risk factors of traumatic arthritis in ankle fracture patients were analyzed by single factor and multi factor logistic regression analyses; R software was used to build the prediction model of line graph;receiver operating characteristic (ROC) curve and calibration graph were applied to verify the discrimination and consistency of the model.

RESULTS

One hundred and twelve of 385 patients with ankle fracture were developed to post-operative traumatic arthritis,and 275 did not. Univariate analysis showed that there were significant differences in age,BMI,fracture type,operation time,physical labor aboveⅡ,open injury,osteoporosis and poor reduction between two groups (P<0.05). Multivariate Logistic regression analysis showed that age (OR=2.887),BMI (OR=4.042),fracture type (OR=4.244),operation time (OR=2.665),physical labor above gradeⅡ(OR=5.099),osteoporosis (OR=10.219),and poor reduction (OR=3.112) were independent risk factors for traumatic arthritis after ankle fracture (P<0.05). Based on the above risk factors,an nomogram model was established to predict the risk of postoperative traumatic arthritis in ankle fracture patients,and internal and external verification was conducted. The results showed calibration curve of modeling group and verification group showed a good fit between correction curve and ideal curve,indicating that the predicted risk of postoperative traumatic arthritis by the model was basically consistent with actual risk. Area runder ROC curve analysis results showed 0.867[(95%CI(0.826,0.908)] and 0.882 [95%CI(0.827,0.938)],respectively,indicating that the prediction model had good prediction ability.

CONCLUSION

Age,BMI,fracture type,operation time,physical labor above gradeⅡ,osteoporosis and poor reduction are all risk factors for post-operative traumatic arthritis in patients with ankle fracture. The prediction model based on the above risk factors could effectively evaluate risk of post-operative traumatic arthritis in patients with ankle fracture.

Validation of anterior ankle soft tissue dynamics and shear modulus for anterior ankle impingement syndrome after ankle fracture surgery

Anterior ankle impingement syndrome (AAIS) has been reported to account for a high percentage of complications following ankle fracture surgery. The soft tissue etiology of AAIS is thought to be thickening and inflammation of the anterior ankle soft tissues intervening anteriorly at the tibiotalar joint, causing pain and functional limitation during dorsiflexion. However, the effects of anterior ankle soft tissue dynamics and stiffness on AAIS have yet to be clarified. This study aimed to determine the relationship between AAIS and the anterior ankle soft tissue thickness change ratio and shear modulus using ultrasonography (US). The participants were 20 patients with ankle joint fractures (AO classification A, B) who had undergone open reduction and internal fixation and 20 healthy adults. The evaluation periods were 3 months and 6 months postoperatively. US was used to delineate the tibialis anterior tendon, extensor hallucis longus tendon, and the extensor digitorum longus tendon over the talus and tibia on a long-axis image. Anterior ankle soft tissue thickness was measured as the shortest distance from the most convex part of the talus to the tendon directly above it. The Anterior ankle soft tissue thickness change ratio was determined by dividing the value at 0° dorsiflexion by the value at 10° plantarflexion. The same images as for the anterior soft tissue thickness measurement were drawn for the shear modulus measurement, and the average shear modulus (kPa) was calculated using shear-wave elastography. There was no significant difference in the thickness change ratio between the postoperative and healthy groups. Compared with the healthy group, the shear modulus was significantly higher at 3 and 6 months in the postoperative group (p < 0.01). The shear elastic modulus at 6-month postoperative group was significantly lower than at 3-month postoperative group (p < 0.01). Anterior ankle joint soft tissue stiffness may increase after surgery for an ankle fracture.

[Plastering-A technique fallen into obscurity]

Immobilization of fractures and dislocations is a basic technique in orthopedic trauma surgery care. The orthopedic surgeon should be familiar with the various materials, techniques and possible complications. Despite other techniques, the classical white plaster cast remains an integral part of orthopedic trauma surgery care. The application of such a cast must be learned as failure to observe the basic principles can result in harm to the patient. In many hospitals, the application of a plaster cast is delegated to the nursing staff according to the physician's instructions. As a result, many young medical colleagues lack the knowledge of how to apply a plaster cast. In addition to the treatment of fractures, immobilization after dislocation, inflammation and ligamentous injuries are some of the areas of application. In this article the application of a plaster cast is described based on a case study, from the indications to the execution and possible complications.

Ankle fractures with Chaput fragment: A new classification system with insights into morphology and relation to surgical treatment

BACKGROUND

The Chaput fragment, a bony avulsion of the anterolateral margin of the distal tibia, is a less commonly discussed fracture pattern in ankle injuries. Its significance in ankle fractures and the optimal fixation technique remains unclear due to limited literature. This study aims to describe the morphology of ankle fractures with Chaput fragment and introduce a new classification system.

MATERIALS AND METHODS

We retrospectively analyzed 33 patients with ankle fractures with associated Chaput fragment treated at our institute over a 3-year period. Data on patient demographics, fracture classification, surgical approach, and fixation method were collected, and a novel classification system for Chaput fragments was proposed.

RESULTS

Four distinct morphological types of Chaput fragment were identified (types 1-4), and three newer variants of trimalleolar fractures were identified (anterior, lateral, and medial variants). Type 1 refers to a small avulsion fragment attached to the anterior-inferior tibiofibular ligament; Type 2 is an anterolateral oblique type; Type 3 refers to an anterolateral fragment with extension into the medial malleolus and Type 4 is a comminuted Chaput fragment. Type 1 Chaput fragment was the most prevalent (60.6%), followed by Type 2 (24.3%), Type 4 (9.1%), and Type 3 (6.1%). The fixation methods ranged from screw fixation, plate fixation, and suture fixation to combinations of these techniques or even indirect stabilization with syndesmotic screws.

CONCLUSION

Our new classification system based on morphology includes all possible variants of Chaput fracture. This preliminary data needs to be corroborated by more studies and validated by a larger number of observers.

Operative treatment results of posterior malleolar fractures in trimalleolar fractures with screw fixation and plate fixation: short-term results

BACKGROUND

Ankle fractures are among the most common lower limb fractures. There is no agreement about the best treatment for these fractures. This study compared the short-term results of screw and plate fixation methods.

METHODS

In this prospective study, 32 patients that underwent screw fixation for posterior malleolar fracture and 32 patients that underwent plate fixation for posterior malleolar fracture were assessed 1, 3, and 6 months after surgery.

RESULTS

The mean age in group 1 (screw fixation) and group 2 (plate fixation) was 32.56, and 37.82 ± 9.99, respectively. The frequency of gender in group 1 (screw fixation) and group 2 (plate fixation) for females and males was 20%, 80%, 4%, and 18%, respectively. The mean range of motion (ROM) in month 1 in group 1 was 89.4, in group 2 was 90.22, in month 3 in group 1 was 100.6, in group 2 was 100.36, in month 6 in group 1 was 115.4, and in group 2 was 110.68. The mean visual analog scale (VAS) in month 1 in group 1 was 6.88, in group 2 was 6.09, in month 3 in group 1 was 4.14, in group 2 was 3.63, in month 6 in group 1 was 2.56, and in group 2 was 2.54. In group 1, we had 1 case of nerve injury, 1 case of deep infection, and 3 cases of superficial infection, and in group 2, we had 2 cases of nerve injury, 2 cases of deep infection, and no case of superficial infection. The mean foot and ankle outcome score (FAOS) in group 1 was 75.44, and in group 2 was 74.36.

CONCLUSION

In our study, we were unable to indicate a superior treatment method. More comprehensive studies with larger populations are suggested.

Analgesic effectiveness of continuous versus single-injection adductor canal block in addition to continuous popliteal sciatic nerve block for bimalleolar and trimalleolar ankle fracture surgery: Prospective randomized controlled trial

BACKGROUND

The adductor canal block is a well-known procedure for controlling postoperative pain after medial malleolus fracture surgery. Continuous nerve block is a viable option for blocking pain for a longer period although the literature on this subject is scarce. Therefore, this study aimed to compare continuous adductor canal block (cACB) group to single-injection adductor canal block (sACB) group in those with bimalleolar or trimalleolar ankle fractures. The procedure was performed in addition to a continuous sciatic nerve block for postoperative pain relief and patient satisfaction.

METHODS

The study included 57 patients who had bimalleolar or trimalleolar ankle fractures and underwent open reduction and internal fixation between August 2016 and June 2018. Each patient received a continuous sciatic nerve block and was divided into two groups: those who received cACB and those who received sACB. Each postoperative pain was scored at 4, 8, 12, 24, 48, and 72 h after surgery. Additionally, the consumption of rescue medications and patient satisfaction were evaluated.

RESULTS

The two groups displayed no disparity in medial side ankle pain at 4 h and 8 h after surgery, but significantly higher pain in the sACB group at 12, 24, 48, and 72 h after surgery. However, there was no difference in the pain at the lateral side of ankle and consumption of rescue medication. In addition, the cACB group showed more satisfaction than the sACB group did.

CONCLUSION

CACB is better than sACB in terms of postoperative pain control and patient satisfaction. cACB can be used for postoperative pain control in ankle fractures involving the medial malleolus.

LEVEL OF EVIDENCE

Prospective Randomized Controlled Trial, Level 2.

Predictors of first-year postoperative complications after fixation of low-energy ankle fractures: A single-center, retrospective cohort study of 663 consecutive fractures

INTRODUCTION

Rotational ankle fractures are common, have diverse personalities and affect both robust and fragile patients. Postoperative complications are frequent, creating a sizeable economic burden. The primary purpose of this study was to expand current knowledge on predictors of postoperative complications after low-energy ankle fracture fixation.

MATERIALS AND METHODS

A retrospective single-center cohort study was completed of patients undergoing internal fixation OF low-energy ankle fractures. The primary outcome was first-year postoperative complications, classified as major (surgical) or minor (non-surgical). Data on patients, their injuries, and treatments were collected. To identify potential predictors of outcomes, logistic regression methods were used, with a backward-stepwise method used for model fitting.

RESULTS

In total, 663 patients of median age 59 years were analysed. We found a high rate of complications (28.4%), with wound-healing issues and infections predominant. Overall, 14.8% had minor complications, while 13.6% required an unplanned reoperation. On multivariable analysis, the most consistent predictors of complications were older age (OR: 1.02 per year), longer operating time (3.32 per hour), and smoking (2.91).

CONCLUSIONS

Older patients and smokers who sustain fractures requiring more complex surgery are at higher risk of postoperative complications.

Epidemiology & management of complex ankle fractures in the United Kingdom: A multicentre cohort study

BACKGROUND

Patient factors are known to contribute to decision making and treatment of ankle fractures. The presence of poor baseline mobility, diabetes, neuropathy, alcoholism, cognitive impairment, inflammatory arthritis or polytrauma can result in a higher risk of failure or complications. Limited evidence is available on the optimum management for this challenging cohort of patients herein described as complex ankle fractures. This UK multicentre study assessed and evaluated the epidemiology of ankle fractures complicated by significant comorbidity and patient factors and use of specialist surgical techniques such as hindfoot nails (HFN) / tibiotalarcalcaneal (TCC) nails and enhanced open reduction and internal fixation (ORIF).

PATIENTS AND METHODS

A UK-wide collaborative study was performed of adult distal AO43/AO44 fractures, associated with 1 or more of the patient factors listed above. Primary outcomes included patient demographics, comorbidities, surgical technique and implants. Secondary outcomes included surgical complications and early post-operative weight bearing instructions. Statistical analysis was performed to assess patient and fracture characteristics on outcome, including propensity matching.

RESULTS

One-thousand three hundred and sixty patients, with at least one of the above complex factors, from 56 centres were included with a mean age of 53.1 years. 90.2% (1227) patients underwent primary fixation which included 78.9% (1073) standard open reduction internal fixations (ORIF), 3.25% (43) extended ORIF and 8.1% (111) primary HFN / TCC. Overall wound complications and thromboembolic events were similar in the hindfoot nail group and the ORIF group (11.7% vs 10.7%). Wound complications were greater in diabetic patients versus non-diabetic patients independent of fixation method (15.8% vs 9.0%). After propensity matching for comorbidities and fracture type, overall complications were lower in the hindfoot nail (11.8%) and extended ORIF groups (16.7%), than the standard ORIF group (18.6%).

CONCLUSION

Only a minority of complex ankle fractures are treated with specialised techniques (HFN/TCC or extended ORIF). Though more commonly used in older and frail patients their perceived advantages are often negated by a reluctance to bear weight early. These techniques demonstrated a better complication profile to standard ORIF but hindfoot nail with joint preparation for fusion was associated with more complications than hindfoot nail for fixation.

LEVEL OF EVIDENCE

III.

Syndesmotic injury with ankle fracture: A systematic review of screw vs dynamic fixation

Cortical screw fixation across the tibiofibular joint is the mainstay of treatment for syndesmotic injury. Dynamic fixation devices have been developed offering similar advantages to screw fixation in terms of reduction and stability of the syndesmosis. Dynamic fixation may also facilitate a more physiological movement between the tibiofibular joint and thus incur less morbidity. Patient's rehabilitation potential is enhanced and reduces the need for hardware removal. Our systematic review aims to analyse the relevant current literature and compare screw fixation to dynamic fixation in the treatment of syndesmotic injury associated with acute ankle fractures. A literature search was performed on Pubmed and Ovid Medline to find scientific papers relating to syndesmotic fixation in acute ankle fractures. Papers were screened and included dependent on predetermined criteria. Risk of bias was assessed after screening full papers by two independent reviewers. Tables and analysis were made using Microsoft excel. A total of 8 papers with 673 patients were included. We found no functional difference between screw fixation or dynamic fixation groups at final follow-up. Three papers showed statistically significant lower rates of reoperation in the dynamic fixation group. Dynamic fixation may offer lower post operative complications and reoperation rates. Therefore, dynamic fixation may be a beneficial alternative treatment compared to traditionally used syndesmotic screws.

A comparison of outcomes of locking versus non-locking plate fixation for the distal fibula fractures: a systematic review and meta-analysis

PURPOSE

A locking plate (LP) or non-locking plate (NLP) can be used for distal fibula fracture fixation. However, the advantages of LP over NLP in patients with distal fibula fractures are not clear. In terms of indications, the role of the two plates probably differs; however, to draw comparative conclusions, we conceptualized this systematic review and meta-analysis of studies that directly compared the two plates, wherein both groups' indications and baseline parameters were similar.

METHODS

An electronic literature search was performed using PubMed/Medline, Embase, Scopus, and Cochrane Library databases for studies comparing the LP versus NLP fixation for the lateral malleolus fracture. A total of 18 studies were included in qualitative and quantitative analysis. A subgroup analysis was performed for patients aged < 55 years and patients aged > 55 years. The statistical analysis was performed by Review Manager Software version 5.4.1.

RESULTS

A meta-analysis of 4243 fractures was performed across 18 studies. The rate of fracture union and overall complication rates did not differ between the two fixation groups with an OR of 0.71 (95% CI 0.26, 1.96, p = 0.51 and 1.11 (95% CI 0.84, 1.47, p = 0.47, respectively. There is no difference in the reoperation rate due to minor or major complications between the two groups. There was no difference in functional outcome (MD -0.85, with 95% CI -5.63, 3.93, p = 0.73), but NLP has a shorter surgical duration (MD 3.0, with 95% CI 0.26, 5.75, p = 0.03). A leave-one-out sensitivity analysis performed for overall complications affected the final outcome of the meta-analysis.

CONCLUSION

This meta-analysis demonstrates no clear benefit in selecting LP over NLP for the fixation of lateral malleolus fractures.

Considerations with Fractures of the Posterior Malleolus in Ankle Fractures

Foot and ankle surgeons are commonly confronted with the surgical dilemma on when and how to best surgically address trimalleolar ankle fractures with a posterior malleolar component. This may involve either direct fixation of the posterior malleolus or indirect stabilization with the fixation of the medial and lateral malleoli and trans-syndesmotic fixation. Recently there has been a paradigm shift in the management of these injuries with a more thorough understanding of anatomy, stability, and long-term sequela of these injuries. This article aims to evaluate the current literature on posterior malleolar ankle fractures, approaches to fixing the posterior malleolus, and outcomes and complications of these procedures.

The reliability of posterior malleolar ankle fracture assessment: a unique perspective

AIM

This study aims to elucidate the pathology of PMFs in the South African population, establish correlations between fracture patterns and international classification guidelines and evaluate the interobserver reliability of current classifications.

METHODS

A retrospective review was conducted in a multicentre analysis over a one-year period from January 2019 to December 2019 at our institution. Computer tomography scans for foot and ankle injuries were reviewed, and posterior malleolus fractures were included. Pathoanatomical data was collected and analysed according to known classification systems and subsequent treatment modalities evaluated. A panel of observers individually reviewed radiographic data to determine interobserver reliability.

RESULTS

A total of 71 patients were included with a mean age of 41 ± 13.4 years (range 18-78) and a female predominant population (69%). A greater proportion of injuries were high energy (23.9%), with significant fragment comminution (53.5%), and half (52.1%) of all injuries were subluxated/dislocated at presentation. A total of 93% of injuries were managed operatively, despite theatre access limitations resulting in significant delays to fixation (19.1 days). Despite good pathoanatomical agreement with most international classifications, interobserver reliability was poor (Krippendorff α-coefficient < 0.667). Inconsistent treatment patterns in operative and non-operative strategies are reported.

CONCLUSION

A unique patient population of younger, female individuals incurred posterior malleolar fractures due to higher energy mechanisms of injury. Whilst injury patterns were mostly comparable, significant interobserver variability was noted. Resource limitations, diagnostic challenges, poorly defined and inconsistent treatment strategies, inevitably impact outcomes within the South African population.

LEVEL OF EVIDENCE

Level III.

Patterns of Ankle Fractures Based on Radiographs and CT Images of 1000 Consecutive Patients

Objectives

The knowledge of different types of ankle fractures based on plain radiographs and computed tomography (CT) images can help improve patients' management.

Methods

This cross-sectional study assessed the plain radiographs and CT images of 1,000 consecutive patients observed in an emergency department between March 2015 and March 2020. Fractures were labeled as uni-, bi-, or trimalleolar. Malleolar fractures were classified into medial, lateral, and posterior ones based on Herscovici, Danis-Weber, and Mason and Molloy classifications, respectively. Bi- and trimalleolar fractures, on the other hand, were categorized according to the Lauge-Hansen classification.

Results

This study included 1,000 patients with 1,003 ankle fractures. Of them, 901 were adults (mean±SD age: 41.6±16.7, male: 567 [62.9%]) with 904 fractures. In total, 53% of adult patients were 18 to 39 years old. Considering unilateral ankle fractures, the medial malleolar fracture was the most common unimalleolar fracture (62.6%), with Herscovici C being the most frequent subtype (65.3%). On the other hand, the most common type of lateral malleolar fracture was Danis-Weber type B (65.5%). There were also 209 (23.3%) bimalleolar and 114 (12.7%) trimalleolar fractures, 5.8% (16 fractures) of which could not be classified based on the Lauge-Hansen classification. Unimalleolar fractures were also observed in 87 (87.9%) children, with the medial malleolar fracture being the most common type (89.7%).

Conclusion

Medial malleolar fractures were the most frequent malleoli in patients observed in the emergency department under study. Among bi- and trimalleolar ankle fractures, supination-external rotation and pronation-external rotation injuries were the most common patterns. The Lauge-Hansen classification was not applicable in 5.8% of bi- and trimalleolar fractures.

Finite element analysis and a pilot study of different fixation constructs for Danis-Weber A and B lateral malleolus fractures

BACKGROUND

Displaced lateral malleolus fractures are typically stabilised through open reduction and internal fixation. The biomechanically and clinically efficacy of locking plates and lag screws, particularly in Weber A and B distal fibular fractures remains a subject of contention. This study examines two locking plate designs for lateral malleolus fractures, evaluating their performance with and without interfragmentary screws using finite element models.

METHODS

Utilising CT images of a healthy adult male volunteer, a three-dimensional finite element model was constructed. The Fibula-specific Flank Multiaxial Locking Anatomic Plate (FMLP) and the Conventional Locking Plate (CLP) were subjected to stabilisation, both with and without an interfragmentary screw, mimicking the Danis-Weber A and B lateral malleolus oblique fracture fixation. Loads of 140 N and 70 N, equivalent to 20% of the body weight, were applied to simulate the single-leg and two-leg standing conditions in the axial direction. The von Mises stress (VMS) distributions and element displacements were subsequently analyzed.

RESULTS

In the Danis-Weber A fracture model group, the FMLP with an interfragmentary screw fixation exhibited the lowest peak VMS values: 51.9 MPa in the fibula, 89.0 MPa in the plate, and 61.3 MPa in the screws for simulating single-leg conditions. Under two-leg standing conditions, these peak VMS values decreased to 25.9 MPa in the fibula, 44.5 MPa in the plate, and 30.6 MPa in the screws, respectively. Furthermore, the overall structural peak displacements during single-leg standing for both Weber-A and B fractures with different implants ranged from 1.61 to 2.54 mm. While standing on two feet, the ranged was from 0.80 to 1.27 mm. An interfragmentary screw at the oblique fracture site resulted in reduced the peak value of VMS in the fibula, plate, screws, consequently decreased the overall structural displacement for FMLP and CLP fixation in lateral malleolus fractures.

CONCLUSIONS

The current finite element analysis (FEA) demonstrates that FMLP exhibits superior mechanical characteristics in Danis-Weber A and B lateral malleolus fractures compared to CLP. The inclusion of an interfragmentary screw, combined with locking plate design, enhances stability for simple oblique distal fibular fractures. The FMLP presents itself as potential as an alternative for lateral malleolus fractures from a biomechanical perspective. Nevertheless, further verification of these results is imperative through subsequent clinical studies.

Importance of computed tomography in posterior malleolar fractures: Added information to preoperative X-ray studies

BACKGROUND

Ankle fractures are common lesions of the lower limbs. Approximately 40% of ankle fractures affect the posterior malleolus (PM). Historically, PM osteosynthesis was recommended when PM size in X-ray images was greater than 25% of the joint. Currently, computed tomography (CT) has been gaining traction in the preoperative evaluation of ankle fractures.

AIM

To elucidate the similarity in dimensions and to correlate PM size in X-ray images with the articular surface of the affected tibial plafond in the axial view on CT (AXCT) of a PM fracture.

METHODS

Eighty-one patients (mean age: 39.4 ± 13.5 years) were evaluated (54.3% were male). Two independent examiners measured PM size in profile X-ray images (PMXR) and sagittal CT (SAGCT) slices. The correlation of the measurements between the examiners and the difference in the PM fragment sizes between the two images were compared. Next, the PM size in PMXR was compared with the surface of the tibial plafond involved in the fracture in AXCT according to the Haraguchi classification.

RESULTS

The correlation rates between the examiners were 0.93 and 0.94 for PMXR and SAGCT, respectively (P < 0.001). Fragments were 2.12% larger in SAGCT than in PMXR (P = 0.018). In PMXR, there were 56 cases < 25% and 25 cases ≥ 25%. When PMXR was < 25%, AXCT corresponded to 10.13% of the tibial plafond. When PMXR was ≥ 25%, AXCT was 24.52% (P < 0.001). According to the Haraguchi classification, fracture types I and II had similar PMXR measurements that were greater than those of type III. When analyzing AXCT, a significant difference was found between the three types, with II > I > III (P < 0.001).

CONCLUSION

PM fractures show different sizes using X-ray or CT images. CT showed a larger PM in the sagittal plane and allowed the visualization of the real dimensions of the tibial plafond surface.

Establishing regions of interest of the lower leg and ankle for perioperative volumetric assessment with a portable 3D scanner in orthopedic and trauma surgery - a pilot study

BACKGROUND

Soft tissue swelling assessment benefits from a reproducible and easy to use measurement method. Monitoring of the injured lower extremity is of clinical import during staged soft tissue management. Portable 3D scanners offer a novel and precise option to quantify and contrast the shapes and volumes of the injured and contralateral uninjured limbs. This study determined three regions of interest (ROI) within the lower extremity (lower leg, ankle and foot), that can be used to evaluate 3D volumetric assessment for staged soft tissue management in orthopedic and trauma surgery.

METHODS

Twelve healthy volunteers (24 legs) were included in this cohort study. Scans of all three ROI were recorded with a portable 3D scanner (Artec, 3D scanner EVA) and compared between the right and left leg using the software Artec Studio (Arctec Group, Luxemburg).

RESULTS

Mean volume of the right leg was 1926.64 ± 308.84 ml (mean ± SD). ROI: lower leg: 931.86 ± 236.15 ml; ankle: 201.56 ± 27.88 ml; foot: 793.21 ± 112.28 ml. Mean volume of the left leg was 1937.73 ± 329.51 ml. ROI: lower leg: 933.59 ± 251.12 ml; ankle: 201.53 ± 25.54 ml; foot: 802.62 ± 124.83 ml. There was no significant difference of the overall volume between right and left leg (p > 0.05; overall volume: △ difference: 29.5 ± 7.29 ml, p = 0.8; lower leg: △ difference: 21.5 ± 6.39 ml, p = 0.8; ankle: △ difference: 5.3 ± 2.11 ml, p = 0.4; △ difference: 16.33 ± 4.45 ml, p = 0.8.

CONCLUSION

This pilot study defines three regions of interest of the lower leg and demonstrates no difference between the right and left side. Based on these ROI, further studies are needed to evaluate the clinical applicability of the scanner.

Splint versus no splint after ankle fracture fixation; Results from the multi-centre post-operative ankle splint trial (PAST)

BACKGROUND

There is considerable variation in the rehabilitation of ankle fractures. Ankle fractures treated surgically are often immobilized or splinted in the early post-operative period, despite the lack of robust evidence supporting this intervention. Thus, this randomized controlled trial aims to investigate the anecdote that splinting reduces pain and oedema.

METHODS

A prospective multi-centre randomized controlled trial was performed in three trauma centres. Eligible patients were over 18 years of age that have sustained an isolated unilateral ankle fracture requiring surgical intervention. Patients were randomized to two groups receiving either; a plaster of Paris posterior back-slab or compressive bandage dressing. The post-operative rehabilitation protocol was standardized across both groups. Baseline demographics and fracture characteristics and classifications were analysed. Primary outcomes included; oedema measured by the figure-of-eight-20 technique and pain at multiple time points. Secondary outcomes included; the American Orthopaedic Foot and Ankle Society (AOFAS) score, satisfaction, unplanned emergency room (ER) visits and complications.

RESULTS

A total of 104 comparable participants were included; 54 in the non-splint group and 50 in the splint group. There was no significance difference in ankle oedema, ankle oedema compared to contralateral ankle and pain scores between the two groups (P = 0.56, P = 0.25, P = 0.39 respectively). Patient satisfaction was higher in the early postoperative period in the non-splint group (P = 0.016). The AOFAS score was not significantly different across any time point (P = 0.534). In the splint group, there was a 46% rate of splint-related complaints and complications. Unplanned ER visits occurred in 46% of the splint group and 7.4% of the non-splint group (P < 0.001). There were 2 wound infections, 1 non-union and 1 deep vein thrombosis in the splint group. There was 1 wound infection and 1 deep vein thrombosis in the no-splint group (P = 0.481) CONCLUSION: The routine use of a splint does not add any perceivable benefit to the postoperative course of an ankle fracture fixation, particularly in the reduction of oedema and postoperative pain. Another key finding is that the absence of a splint does not appear to result in higher complication rates, instead leads to higher unplanned ER visits and lower early satisfaction rates.

Hindfoot nailing without joint preparation for ankle fractures in extremely elderly patients: Comparison of clinical and patient-reported outcomes with standard ORIF

INTRODUCTION

Tibiotalocalcaneal (TTC) nailing without joint preparation has been indicated as an alternative to open reduction and internal fixation (ORIF) in the treatment of unstable fragility ankle fractures. We hypothesized that primary hindfoot nailing without joint preparation, and immediate weight bearing can provide a safe and effective treatment for unstable fragility fractures of the ankle compared to ORIF.

METHODS

A retrospectively single-center cohort was reviewed for all surgically treated ankle fractures in patients aged 75 years and older between 2016 and 2021. The cases were grouped by the surgical technique: ORIF or TTC nailing. Diagnosis and treatment were validated by a review of the radiographs and the patients' charts. Primary outcomes included complication rates and revision rates. The PROMs questionnaires included the Foot and Ankle-Ability Measure (FAAM-ADL) and the Olerud-Molander Ankle Score (OMAS).

RESULTS

Forty-six cases met the inclusion criteria during the study period. Eighteen in the TTC group and 28 in the ORIF group. The average follow-up was 46.4 months (Median 49.5, SD ± 25.3). The mean age of the TTC group was significantly higher (88.6 versus 81.8, p < 0.001). The mean surgery duration and length of stay were similar. The complication rates were 50.0 % in the ORIF group (28.6 % major) versus 22.2 % in the TTC group (5.6 % major), (p = 0.060). The revision rates were 28.6 % and 11.1 % in the ORIF and TTC groups respectively (p = 0.161). The FAAM-ADL was higher in the ORIF group (62.6 % versus 32.4 %, p = 0.020), as well as the OMAS (60.0 versus 32.8, p = 0.029).

CONCLUSION

TTC nailing without joint preparation for unstable fragility fractures of the ankle in the extremely elderly provided a better complication profile compared to traditional ORIF. However, PROMs were inferior.

Predictors of first-year postoperative complications after fixation of low-energy ankle fractures: A single-center, retrospective cohort study of 663 consecutive fractures

INTRODUCTION

Rotational ankle fractures are common, have diverse personalities and affect both robust and fragile patients. Postoperative complications are frequent, creating a sizeable economic burden. The primary purpose of this study was to expand current knowledge on predictors of postoperative complications after low-energy ankle fracture fixation.

MATERIALS AND METHODS

A retrospective single-center cohort study was completed of patients undergoing internal fixation OF low-energy ankle fractures. The primary outcome was first-year postoperative complications, classified as major (surgical) or minor (non-surgical). Data on patients, their injuries, and treatments were collected. To identify potential predictors of outcomes, logistic regression methods were used, with a backward-stepwise method used for model fitting.

RESULTS

In total, 663 patients of median age 59 years were analyzed. We found a high rate of complications (28.4%), with wound-healing issues and infections predominant. Overall, 14.8% had minor complications, while 13.6% required an unplanned reoperation. On multivariable analysis, the most consistent predictors of complications were older age (OR=1.02 per year), longer operating time (3.32 per hour), and smoking (2.91).

CONCLUSIONS

Older patients and smokers who sustain fractures requiring more complex surgery are at higher risk of postoperative complications.

Clinical effectiveness of suture anchor repair combined with open reduction and internal fixation in the treatment of deltoid ligament rupture in ankle fracture

Objective

To explore the clinical effectiveness of suture anchor (SA) repair combined with open reduction and internal fixation (ORIF) in the treatment of deltoid ligament rupture (DLR) in ankle fractures.

Methods

This is a retrospective analysis of 210 patients with DLR in ankle fracture who were treated in Beijing Chaoyang Hospital from January 2020 to June 2022. According to the surgical records, 125 patients received SA repair combined with ORIF (Repair group) and 85 patients received ORIF only (Non-repair group). The curative effect, recovery of ankle joint function, pain, and bone metabolism of the two groups were observed.

Results

The clinical effectiveness (overall good) was higher in the Repair group (P<0.05). The American Orthopedic Foot and Ankle Society (AOFAS) score was higher three and six months post-operation in the Repair group, and the Visual Analogue Scale (VAS) score was lower than that of the Non-repair group (P<0.05). The Repair group had higher levels of bone-specific alkaline phosphatase (BALP) and bone gla protein (BGP) than the Non-repair group six months post-operation (P<0.05).

Conclusions

SA combined with ORIF has a good effect in the treatment of DLR in ankle fracture patients, which can promote the recovery of ankle function, relieve postoperative pain and improve bone metabolism.

Information needs and preferences of patients with an ankle fracture: User involvement study creating an mHealth solution

OBJECTIVE

The aim of this study was to employ a user-driven participatory design (PD) approach to develop an mHealth solution that addresses patients' information needs after surgical or non-surgical treatment for an ankle fracture.

METHODS

Patients with an ankle fracture and health care professionals along the treatment pathway in both the hospital and municipality participated in four workshops (WS).

RESULTS

We found that patients with an ankle fracture need information on topics such as "a typical course," "bandages and assistive devices," "what can I feel," "what may I do," "what to usually worry about," "medicine," "tips and tricks," and "contact information." Moreover, patients requested diverse modes of dissemination, preferably a combination of text, timelines, pictures, animations, and videos. Alpha and beta testing of the digital platform was conducted, and content-related improvements were made. A readability analysis showed reading ease of 40.1 of 100, meaning that it should be easily understood by 15-16 year-olds.

CONCLUSION

Involving representatives of future users in creating this mHealth solution using PD demonstrates the benefits of creating a solution that aligns with users' needs.

PRACTICE IMPLICATIONS

The mHealth solution is now ready for implementation and large-scale evaluation in phase three of the overall PD study. An mHealth usability questionnaire will be employed to assess usability by future patients with surgically or non-surgically treated ankle fractures.

Cast versus removable orthosis for the management of stable type B ankle fractures: a systematic review and meta-analysis

PURPOSE

There is currently no consensus on nonoperative management in adult patients after a stable type B ankle fracture. The aim of this review is to compare a removable orthosis versus a cast regarding safety and functional outcome in the NOM of stable type B ankle fractures.

METHODS

A systematic review and meta-analysis were performed using randomized clinical trials and observational studies. The methodological quality of the included studies was assessed with the methodological index for non-randomized studies instrument. Nonoperative management was compared using the number of complications and functional outcome measured using the Olerud and Molander Score (OMAS) or the American Academy of Orthopaedic Surgeons Ankle Score.

RESULTS

Five studies were included. Two were randomized clinical trials, and three were observational studies, including a total of 516 patients. A meta-analysis showed statistically significant higher odds of developing complications in the cast group [odds ratio (OR), 4.67 (95% confidence interval (CI) 1.52-14.35)]. Functional outcome in OMAS did not vary significantly at 6 weeks, mean difference (MD) - 6.64 (95% CI - 13.72 to + 0.45), and at 12 weeks, MD - 6.91 (95% CI - 18.73 to + 4.91). The mean difference of functional outcome in OMAS at 26 weeks or longer was significantly better in the removable orthosis group; MD - 2.63 (95% CI - 5.01 to - 0.25).

CONCLUSION

Results of this systematic review and meta-analysis show that a removable orthosis is a safe alternative type of NOM, as complication numbers are significantly lower in the orthosis group. In addition, no statistically significant differences were found in terms of functional outcome between a removable orthosis and a cast at 6 and 12 weeks. The 6-week and the 26-week OMAS results show that in patients with stable type B ankle fractures, a removable orthosis is non-inferior to a cast in terms of functional outcome.

Adverse Events After Ankle Fracture Open Reduction Internal Fixation Among Patients With and Without Documented Cannabis and Tobacco Use

BACKGROUND

Ankle fractures are common orthopaedic injuries that may be indicated for open reduction internal fixation (ORIF). Although the negative impact of tobacco use on perioperative outcomes of ankle fracture ORIF has been described, the potential impact of cannabis use on related outcomes is not as well established.

METHODS

Retrospective database study of adult patients undergoing ankle ORIF for closed, isolated, ankle fractures from the 2010-2021 Q1 PearlDiver M151 data set. Subcohorts without and with cannabis and/or tobacco use were identified based on coding and matched based on patient age, sex, and Elixhauser Comorbidity Index (ECI) scores to yield groups of nonusers, tobacco users, tobacco and cannabis users, and cannabis users. Ninety-day adverse events were assessed between matched subcohorts with multivariable logistic regression controlling for age, sex, and ECI.

RESULTS

A total of 149 289 patients met study inclusion criteria for whom tobacco only use was documented for 14 989 (10.0%), tobacco and cannabis use for 2726 (1.8%), and cannabis only use for 867 (0.6%). Matching yielded 823 for each group. On multivariable analyses, isolated tobacco users were at higher odds of 90-day urinary tract infections (UTIs) (odds ratio [OR] 2.64), minor adverse events (OR 2.33), all-cause adverse events (OR 2.17), readmissions (OR 1.85), and severe adverse events (OR 1.84). Tobacco and cannabis comorbid users were at a marginally higher odds of 90-day UTI (OR 2.82), minor adverse events (OR 2.51), readmissions (OR 2.39), and any adverse events (OR 2.22). Cannabis only users were not at greater odds of 90-day adverse events relative to nonusers.

CONCLUSION

Patients with tobacco use (alone or with cannabis) were at greater odds of 90-day adverse events following ankle fracture ORIF, but cannabis only users were not.

LEVEL OF EVIDENCE

Level III, Retrospective database study.

Technical note: Intraoperative ultrasound measurement for evaluating the stability of the inferior tibiofibular joint in patients with ankle fractures

OBJECTIVES

Injury to the tibiofibular syndesmosis is a common complication of ankle fractures. Currently, it is challenging to determine the stability of the tibiofibular joint caused by ankle fractures during surgery. This study aims to establish a standardized method for dynamically evaluating the stability of the inferior tibiofibular joint under intraoperative ultrasound and assess its utility in surgery, thereby assisting in determining the necessity for fixation of the inferior tibiofibular joint after fracture reduction and fixation.

METHODS

The stability of the inferior tibiofibular joint was assessed using an intraoperative ultrasonic external rotation stress test, with a torque set at 7.2 N·m. The measured parameters included the width of the inferior tibiofibular space in neutral (N) and external rotation (E) positions, stretch ratio (E/N), and injured/healthy side stretch ratio (I/H). Patients with Weber B or C type ankle fractures were selected as participants.

RESULTS

For the case with Weber C fracture, the N measurement was 4.22 mm after fracture fixation, while E measured 5.77 mm and E/N ratio was 1.37, which were larger than those on the healthy side (N: 4.17, E: 4.50, E/N:1.08), with an I/H ratio of 1.27. Intraoperative X-ray revealed instability of the inferior tibiofibular joint. After inserting a tibiofibular screw, the N measurement was 4.20 mm, while the E measurement recorded 4.32 mm, resulting in an E/N ratio of 1.03 and an I/H ratio of 0.95, indicating improved joint stability. For the Weber B fracture case, the N measurement was 3.55 mm after fracture fixation, while E measured 3.98 mm and the E/N ratio was 1.12, slightly lower than those on the healthy side (N: 3.94, E: 4.47, E/N: 1.13), with an I/H ratio of 0.99. The intraoperative X-ray revealed stability of the inferior tibiofibular joint. Therefore, no further fixation was performed on it.

CONCLUSION

Standardized intraoperative ultrasound stress test allows for real-time, dynamic assessment of the stability of the inferior tibiofibular joint after ankle fracture reduction and fixation, which can help guide the fixation of the inferior tibiofibular joint, thereby reducing the risk of postoperative traumatic arthritis.

Two-staged management of ankle fracture-dislocations with a posterior fragment: computer-tomography-based classification, treatment and its outcome

INTRODUCTION

Trimalleolar fractures are difficult to treat and malreduction can lead to functional impairment. Involvement of the posterior malleolus has a poor predictive value. Current computed-tomography (CT)-based fracture classifications led to an increase in fixation of the posterior malleolus. The aim of this study was to describe the functional outcome after a two-stage stabilisation with direct fixation of the posterior fragment in trimalleolar dislocation fractures.

MATERIALS AND METHODS

In a retrospective study, all patients presenting with a trimalleolar dislocation fracture, an available CT scan, and a two-stage operative stabilisation including the posterior malleolus by a posterior approach were included. All fractures were treated with initial external fixator and delayed definitive stabilisation including fixation of the posterior malleolus. Next to clinical and radiological follow-up, outcome measures (Foot and Ankle Outcome Score (FAOS), Numeric Rating Scale (NRS), Activity of Daily Living (ADL), Hulsmans implant removal score) and complications were analysed.

RESULTS

Between 2008 and 2019, of 320 trimalleolar dislocation fractures, 39 patients were included. Mean follow-up was 49 months (standard deviation (SD) 29.7, range 16-148). Mean age was 60 years (SD 15.3, 17-84) with 69% female patients. The mean FAOS was 93/100 (SD 9.7, 57-100), NRS 2 (interquartile range (IQR) 0-3) and ADL 2 (IQR 1-2). Four patients showed a postoperative infection, three re-operations had to be performed and implants were removed in 24 individuals.

CONCLUSION

A two-stage procedure of trimalleolar dislocation fractures with in-direct reduction and fixation of the posterior tibial fragment through a posterior approach leads to good functional outcome scores with a low rate of complications.

[Conservative treatment of supination and external rotation for type Ⅲ and Ⅳankle fracture by bone setting]

OBJECTIVE

To explore curative effect of conservative treatment of supination-lateral rotation (SER) with type Ⅲ and Ⅳ ankle fracture by bone setting technique.

METHODS

From January 2017 to December 2019, 64 patients diagnosed with SER with type Ⅲ and Ⅳ ankle fracture were treated with manipulative reduction and conservative treatment (manipulation group) and surgical treatment with open reduction and internal fixation (operation group), 32 patients in each group. In manipulation group, there were 17 males and 15 females, aged from 15 to 79 years old with an average of (51.42±13.68) years old;according to Lauge-Hansen classification, there were 8 patients with supination external rotation type Ⅲ and 24 patients with type Ⅳ. In operation group, there were 13 males and 19 females, aged from 18 to 76 years old with an average of (47.36±15.02) years old;7 patients with type Ⅲ and 25 patients with type Ⅳ. Displacement of ankle fracture was measured by Digimizer software, and compared before treatment, 3 and 12 months after treatment between two groups. Lateral medial malleolus displacement, lateral medial malleolus displacement, lateral malleolus displacement, lateral malleolus displacement, lateral malleolus contraction displacement and posterior malleolus displacement were measured and compared between two groups. Mazur score was used to evaluate ankle joint function.

RESULTS

All patients were followed up from 12 to 36 months with an average of (17.16±9.36) months. There were statistical differences in lateral medial malleolus displacement, lateral medial malleolus displacement, lateral malleolus displacement, lateral malleolus displacement, lateral malleolus contraction displacement and posterior malleolus displacement in manipulation group before and after reduction(P<0.05). Compared with operation group, there were no statistically significant differences in lateral malleolus shift, lateral malleolus shift, lateral malleolus contraction shift(P>0.05), while there were statistically significant differences in lateral malleolus shift, posterior malleolus shift up and down (P<0.05). Mazur scores of ankle joint at 3 months after treatment in manipulation group and operation group were 68.84±13.08 and 82.53±7.31, respectively, and had statistical differences(P<0.05), while there was no difference in evaluation of clnical effect(P>0.05). There were no differences in Mazur score and evaluation of clnical effect between two groups at 12 months after treatment (P>0.05).

CONCLUSION

Bone setting technique could effectively correct lateral displacement of medial malleolus, lateral displacement of medial malleolus, lateral displacement of lateral malleolus and lateral contraction displacement of lateral malleolus in supination lateral rotation type Ⅲ and Ⅳ ankle fracture, and has good long-term clinical effect, which could avoid operation for some patients and restore ankle function after fracture.

Influence of quality of reduction using radiological criteria on kinematics and kinetics in ankle fractures with unstable syndesmotic injury

BACKGROUND

In ankle fractures with syndesmotic injury, the anatomic reduction of the ankle mortise is crucial for preventing osteoarthritis. Yet, no studies have analysed the effect of surgical reduction after unstable ankle fractures on patients' active functional outcome.

METHODS

The Intraoperative 3D imaging data of patients surgically treated between 2012 and 2019 for ankle fracture with concomitant syndesmotic injury were reviewed. 58 patients were allocated to two groups depending on whether the criteria for radiologically optimal reduction were met (39 patients) or not (19 patients). Criteria for optimal reduction were composed of objectively measured and subjectively rated data. After undertaking the Olerud/Molander ankle score, a gait analysis and several active function tests using 3D motion capture were performed in order to evaluate kinetic and kinematic differences between both groups.

FINDINGS

Patients showed deficits of range of motion and balance parameters on the injured ankle, however, there were no significant differences between both groups.

INTERPRETATION

Although, the data did not show that radiological reduction criteria have a statistically significant effect on active functional outcome after a mean follow up time of 5.7 years, tendencies for a better outcome of patients that met the criteria could be seen. It also must be taken into consideration that results are limited by case number and allocation ratio, which made a sub-analysis of the separate reduction criteria unfeasible.

Preoperative CT parameters to predict tibiofibular syndesmosis injury associated with ankle fracture: a propensity score-matched analysis

BACKGROUND

Untreated ankle fractures with concomitant tibiofibular syndesmosis injury often lead to postoperative pain and early traumatic arthritis. CT has advantages in the preoperative diagnosis of combined ankle injuries. However, a few studies have investigated the best preoperative CT parameters to predict tibiofibular syndesmosis injuries associated with ankle fractures. This study aimed to identify and evaluate the optimal preoperative CT parameters for predicting tibiofibular syndesmosis injuries associated with ankle fractures.

METHODS

We retrospectively analyzed 129 patients who underwent preoperative CT of an ankle fracture treated between January 2016 and April 2022 at a tertiary A hospital. All patients underwent open reduction and internal fixation and intraoperative stability testing. Based on the Cotton test, the patients were divided into the stable group (n = 83, 64.3%) and unstable group (n = 46, 35.7%). After 1:1 propensity score matching, the general conditions, anterior tibiofibular distance (TFD), posterior TFD, maximum TFD, tibiofibular syndesmosis area, sagittal fracture angle, Angle-A, and Angle-B were compared between the stable and unstable groups.

RESULTS

The propensity score-matched cohort comprised 82 patients. There were no significant differences between the stable and unstable groups in sex, age, affected side, operation interval, injury mechanism, Lauge-Hansen classification, sagittal fracture angle, and Angle-A (all P > 0.05). Compared with the stable group, the unstable group had a significantly greater aTFD, pTFD, maxTFD, and area (all P < 0.05). PTFD, maxTFD, and area were positively correlated with joint instability. Angle-B was smaller in the unstable group (57.13°) than the stable group (65.56°). ROC analysis showed that Area (AUC 0.711) and maxTFD (AUC 0.707) had the highest diagnostic efficacy.

CONCLUSION

MaxTFD and Area were the best predictive parameters; a larger Area was associated with a higher likelihood of instability of the tibiofibular syndesmosis after ankle fracture fixation.

Locking plates for distal fibula fractures in young and elderly patients: A retrospective study

BACKGROUND

Ankle fractures are common injuries in the young and elderly populations. To prevent post-traumatic arthritis, an anatomic reconstruction of the ankle structure is mandatory. Open reduction and internal fixation is the treatment of choice among orthopaedics. Conventional plates allow stability of the fracture if bone quality is present. Locking plates might offer an advantage for the treatment of lateral malleolar fracture in patients with comminution, severe instability, distal fractures, or osteoporotic bone. Our hospital introduced a new locking plate for fracture of the distal fibula.

AIM

To evaluate locking plates in terms of outcomes and complications in young and elderly patients.

METHODS

We retrospectively reviewed a total of 67 patients treated for displaced distal fibula fractures. Demographic data, number of comorbidities, use of inter fragmentary screw, complication, time of fracture healing, partial or full weight bearing, and reoperation were recorded for all patients. Clinical outcome was assessed by the American Orthopedic Foot and Ankle Society clinical scoring system. Radiographs were obtained at 4, 8, 12, 16, 20, and 24 wk until radiographic union was obtained.

RESULTS

All patients displayed complete bony union on radiographic assessment, and no patients developed any serious complications. We observed two superficial infections, one delayed wound healing, and two plate intolerances. Significant differences were observed between the two age groups in terms of radiographic healing (11.9 wk in younger patients vs 13.7 wk in older patients; P = 0.011) and in the American Orthopedic Foot and Ankle Society score at 6 mo after surgery (88.2 in younger patients vs 86.0 in older patients; P = 0.001) and at 12 mo after surgery (92.6 in younger patients vs 90.0 in older patients; P = 0.000).

CONCLUSION

Locking plates provide a stable and rigid fixation in multifragmentary and comminuted fractures or in the presence of poor bone quality.

Classifications of posterior malleolar fractures: a systematic literature review

INTRODUCTION

Complex ankle fractures frequently involve the posterior malleolus. Many classifications describing posterior malleolar fractures (PMF) exist. The aim of this study was to provide a systematic literature review to outline existing PMF classifications and estimate their accuracy.

METHODS

The databases PubMed and Scopus were searched without time limits. Only specific PMF classifications were included; general ankle and/or pilon fracture classifications were excluded. Selection and data extraction was performed by three independent observers. The systematic literature search was performed according to the current criteria of Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA). The methodological quality of the included studies was quantified using the modified Coleman score.

RESULTS

A total of 110 studies with a total of 12.614 patients were included. Four main classifications were identified: Those describing the size of the posterior malleolar fracture (n = 66), Haraguchi (n = 44), Bartoníček/Rammelt (n = 21) and Mason (n = 12). The quality of the studies was moderate to good with a median Coleman-score of 43.5 (14-79) and a weighted median Coleman-score of 42.5 points. All classifications achieved a substantial to perfect score regarding the inter- and intraobserver reliability, with Mason scoring the lowest in comparison.

CONCLUSIONS

None of the reviewed PMF classifications has been able to establish itself decisively in the literature. Most of the classifications are insufficient in terms of a derivable treatment algorithm or a prognosis with regard to outcome. However, as the Bartoníček/Rammelt classification has the greatest potential due to its treatment algorithm, its reliability in combination with consistent predictive values, its usage in clinical practice and research appears advisable.

Arthroscopy for Traumatic Ankle Injuries

Using ankle arthroscopy in conjunction to open reduction internal fixation of traumatic ankle injuries can play an important role in the management of these injuries by way of treating intra-articular pathologies, leading to improved patient outcomes. While a majority of these injuries are not treated with concurrent arthroscopy, its addition may lead to more prognostic information to dictate the patient's course. This article has illustrated its use in managing malleolar fractures, syndesmotic injuries, pilon fractures and pediatric ankle fractures. While additional studies may be needed to further support AORIF, it may prove to play a vital role in the future.

Successful Primary Treatment of Ankle Fractures in Diabetic Patients with Peripheral Neuropathy Using a Tibiotalocalcaneal Nail: A Case Series

Background

Among diabetics, patients with peripheral neuropathy are at increased risk of developing complications following an ankle fracture. While the outcomes in these patients treated nonoperatively have been poor, the outcomes in those undergoing open reduction and internal fixation are at the best modest. We hypothesize that closed reduction and internal fixation with tibiotalocalcaneal nail is an effective primary procedure in this complication prone patient group.

Methods

A retrospective review of diabetic patients with peripheral neuropathy who underwent acute treatment of an ankle fracture with closed reduction and internal fixation with a tibiotalocalcaneal nail at two Level 1 trauma centers was performed. 30 patients were identified and divided into 2 groups with respect to their postoperative weight bearing protocol: 20 patients in the early weight bearing (EWB) group and 10 patients in the touch-down weight bearing (TDWB). The primary outcome was the rate of return to baseline function and the secondary outcomes included the incidence of wound dehiscence, wound infection, implant failure, loss of fixation, loss of reduction and amputation.

Results

In the EWB group, 15/20 patients returned to their baseline function, 5/20 had wound dehiscence and infection, 2/20 had implant failure, 5/20 had loss of fixation, 4/20 had loss of reduction, and 4/20 underwent amputation. In the TDWB group, 9/10 patients returned to their baseline function, 1/10 had implant failure, 1/10 had loss of fixation. No patients from this group had loss of reduction or underwent amputation.

Conclusion

Treatment with tibiotalocalcaneal nail is an effective primary procedure in this complication prone group of patients, assuming that weight bearing is delayed for six weeks to protect soft tissues and surgical incisions.

Level of Evidence

Level IV, retrospective case series.

Hindfoot nailing for displaced ankle fractures in the elderly: A case-control analysis

INTRODUCTION

Management of fragility ankle fractures in the elderly poses a surgical dilemma. An alternative to open reduction and internal fixation (ORIF) with screw and plate construct in selected elderly patients who may be significantly frail and comorbid is a tibio-talo-calcaneal (TTC) or hindfoot nail. Hindfoot nailing potentially reduces the risk of wound infection and increases likelihood of earlier return to function by allowing earlier weightbearing. The aim of this study was to examine the outcomes and complications of patients who received a hindfoot nail compared to patients who underwent an ORIF.

METHODS

A retrospective review identified patients who underwent hindfoot nailing from Jan 2010 to Dec 2021. Patients aged >65-years who underwent ORIF in the same time period were concurrently identified. The patients in the ORIF group were matched with patients in the hindfoot nail group by age, gender, comorbidity according to their Charlson Comorbidity Index (CCI) and their pre-injury function by Karnofsky Performance Scale (KPS). Clinical Frailty Scale (CFS) was also collected as part of patient demographics. Outcomes examined include mortality, length of stay, operation time, return to previous mobility, wound complications, metalware failure and infections.

RESULTS

Twenty-six patients were identified in the hindfoot nail group and matched to 26 patients who underwent ORIF. Mean age was 84 and 83 years in the nail and ORIF group respectively. Overall, there were 12 and 11 complications from the hindfoot nail and ORIF group respectively with seven and two requiring return to theatre in the nail group and ORIF group (P = 0.07). The hindfoot nail group waited an average of 22 days after the operation for weightbearing compared to 59 days in the ORIF group (P < 0.001). There were no significant differences in length of stay (P = 0.58) and operation time (P = 0.19).

CONCLUSION

Hindfoot nailing was associated with an increased risk of complications and higher risk of return to the operating theatre. Despite the potential attraction of earlier weightbearing, surgeons and patients need to be aware of these potential pitfalls.

The Reliability and Accuracy of the Medial Malleolar Fracture Classification Based on 3D CT Reconstruction

OBJECTIVE

There is a new medial malleolar fracture classification based on 3D CT reconstruction. However, there is no study assessing the reliability and accuracy of the new classification system and comparison between the new and the classic classification. This study aimed to compare the reliability and accuracy of the medial malleolar fracture classification based on 3D CT reconstruction and the Herscovici classification system.

METHODS

We retrospectively analyzed the consecutive ankle fractures in our hospital from January 2013 to September 2020. Five inexperienced and five experienced orthopedic surgeons were included as observers to assess 68 cases with medial malleolar fractures. Ten evaluators classified the cases according to the two classification systems. The reference results of each case were made by the consensus of three senior trauma surgeons. The interobserver reliability, intraobserver reliability, and accuracy were evaluated at an interval of 6 weeks using Fleiss's kappa (κ) statistics.

RESULTS

We found substantial interobserver and intraobserver reliability and 81.4% accuracy for the new classification, which was statistically superior to the Herscovici classification (P < 0.05). The reliability and accuracy of both classifications were similar in inexperienced and experienced groups, except for type III in the new classification. The interobserver reliability of type II was the best (P < 0.05), and the intraobserver reliability of IVc ranked the worst (P < 0.05) in the new classification.

CONCLUSION

The reliability and accuracy of the new classification are superior to the Herscovici classification. Clinical experiences will not affect the assessment of both classification systems in most instances.

Implications of obesity in patients with foot and ankle pathology

Obesity is a growing problem defined as a body mass index of greater than 30 kg/m². It is predicted that by 2030, 48.9% of adults will be classified as obese which expands surgical risk factors to a broad population while increasing healthcare costs at the same time in different socioeconomic groups. This specific population has been widely studied in multiple surgical fields and published studies have shown the implications in each of these fields. The impact of obesity on orthopedic surgical outcomes has been previously reported in several total hip and knee arthroscopy studies, with evidence indicating that obesity is strongly associated with an increased risk of post operative complications together with higher revision rates. In line with increasing interest on the impact of obesity in orthopedics, there has been a similar output of publications in the foot and ankle literature. This review article evaluates several foot and ankle pathologies, their risk factors associated with obesity and subsequent management. It provides an updated, comprehensive analysis of the effects of obesity on foot and ankle surgical outcomes, with the ultimate aim of educating both surgeons and allied health professionals about the risks, benefits, and modifiable factors of operating on obese patients.

Combination of neutrophil to lymphocyte ratio, platelet to lymphocyte ratio with plasma D-dimer level to improve the diagnosis of deep venous thrombosis (DVT) following ankle fracture

PURPOSE

To investigate the relationship between neutrophil to lymphocyte ratio (NLR)/platelet to lymphocyte ratio (PLR) with deep venous thrombosis (DVT) following ankle fracture and the diagnostic ability of combination model.

METHOD

This retrospective study included patients with a diagnosis of ankle fracture who had undergone preoperative Duplex ultrasound (DUS) examination for detecting the possible deep venous thrombosis (DVT). The variables of interest, the calculated NLR and PLR and others (demographics, injury, lifestyles and comorbidities) were extracted from the medical records. Two independent multivariate logistics regression models were used to detect the relationship between NLR or PLR and DVT. If any, combination diagnostic model was constructed and its diagnostic ability was evaluated.

RESULTS

There were 1103 patients included, and 92 (8.3%) were found to have preoperative DVT. The NLR and PLR, which had respective optimal cut-off point of 4 and 200, were significantly different between patients with and without DVT either in continuous or categorical variable. After adjustment for covariates, both NLR and PLR were identified as independent risk factors associated with DVT, with odd ratio of 2.16 and 2.84, respectively. The combination diagnostic model, including NLR, PLR and D-dimer, demonstrated to significantly improved the diagnostic performance than any one alone or combined (all P < 0.05), and the area under the curve was 0.729 (95% CI 0.701-0.755).

CONCLUSION

We concluded the relatively low incidence rate of preoperative DVT after ankle fracture, and both NLR and PLR were independently associated with DVT. The combination diagnostic model can be considered as a useful auxiliary tool for identifying high-risk patients for DUS examination.

Middle-sized posterior malleolus fractures: Fixed versus non-fixed - A prospective randomized study

PURPOSE

This study aimed to assess the impact of fixation on functional and radiological outcomes of ankle fractures involving the posterior malleolus. We hypothesized that fixation of the posterior malleolus would be associated with improved radiological and functional outcome.

METHODS

A prospective randomized controlled study was planned and 40 consecutive ankle fractures involving middle-sized (10-25%) posterior fragment were included. Posterior fragments in Group 1 were not fixated while Group 2 underwent posterior malleolus fixation. The patients were evaluated both functionally and radiologically at minimum 2-years.

RESULTS

Demographics and fracture type distributions were similar between the groups. Despite the slightly better functional outcome in Group 2, no significant functional or radiological outcome difference could be detected. Articular step-off> 1 mm was more common in Group 1 (p = 0.04) and the patients with articular step-off showed significantly worse functional outcome in all functional parameters (p < 0.05). Radiological and functional outcome parameters were positively correlated when all patients were evaluated together. Lateral radiographs caused an overestimation in the size of posterior fragment compared to CT (p < 0.001).

CONCLUSION

Although there was a slightly better clinical outcome in patients with fixed posterior fragments, it was not significant at short to mid-term follow-up. However, posterior fragment fixation contributed to functional outcomes by decreasing the incidence of articular step-off> 1 mm, which was found to be a negative prognostic factor.

LEVEL OF EVIDENCE

Level I; prospective randomized controlled study.

Comparison the treatment of anterior inferior tibiofibular ligament anatomical repair and syndesmosis screw fixation for syndesmotic injuries in ankle fracture

BACKGROUND

The fixation method of syndesmotic injuries in ankle fractures remains controversial. The goal of the study was to compare radiographic and clinical outcomes between anterior inferior tibiofibular ligament (AITFL) anatomical repair with syndesmosis screw fixation in syndesmotic injuries.

METHODS

We analyzed 62 patients who were treated with AITFL anatomical repair or syndesmosis screw fixation for syndesmotic injuries in an advanced teaching hospital between March 2016 and March 2019. Fixation was performed with AITFL anatomical repair in 30 patients (AAR group) and syndesmosis screw in 32 patients (SS group). Radiographic evaluations were the differences in mean anterior and posterior (A difference and P difference) tibiofibular distance between injured and uninjured ankle computed tomography (CT) scan at 6 months postoperatively. Clinical evaluation of patients was done using the American Orthopaedic Foot & Ankle Society (AOFAS) Ankle Hindfoot Score, the Olerud-Molander Ankle (OMA) score and visual analogue scale (VAS) score at 1, 3, 6 months and 1, 2 years postoperatively.

RESULTS

The A difference and P difference on CT was no differences (1.6 ± 0.8 mm, 1.3 ± 0.7 mm vs. 1.5 ± 0.7 mm, 1.2 ± 0.7 mm) between the two groups (All of P > 0.05). The AAR group had higher mean AOFAS score (65.6 ± 5.9, 82.3 ± 4.2, 87.6 ± 5.6 vs. 61.8 ± 5.2, 79.1 ± 4.0, 83.8 ± 4.9; P = 0.008, 0.003, 0.007) and higher mean OMA score (45.7 ± 8.7, 79.2 ± 6.5, 84.1 ± 5.3 vs. 40.4 ± 7.3, 74.8 ± 6.3, 80.3 ± 5.8; P = 0.012, 0.009, 0.010)) at 1, 3 and 6 months postoperatively. The AAR group had lower mean VAS scores (2.6 ± 1.2, 1.7 ± 0.7 vs. 3.4 ± 1.2, 2.2 ± 1.1; P = 0.018, 0.038) at 1 and 3 months postoperatively.

CONCLUSIONS

The results of this study suggest that the AITFL anatomical repair technique could effectively improve ankle function during daily activity. Therefore, AITFL anatomical repair technique is expected to become a better fixation method for syndesmotic injuries.

Can CT-based assessment of lateral malleolus anatomy indicate when and how to perform an intramedullary fixation in distal fibula fractures? An analysis of 150 ankles

PURPOSE

The primary aim was to analyse the lateral malleolus morphology with a focus on the shape of the distal fibula for IM fixation of the fibula in infra- and transsyndesmotic fracture patterns. The secondary aim was to propose a treatment algorithm according to the lateral malleolar anatomy.

METHODS

77 healthy, skeletally mature volunteers underwent CT scanning of the ankle. The fibula medullary canal and its cortical thickness were quantitatively analysed at 4 different levels measured from the fibular tip (1.5 cm, 3.0 cm, 4.5 cm, and 6.0 cm). A geometric classification was proposed, and a decision algorithm was developed. Statistical significance was set at a p-value < 0.05.

RESULTS

The smallest diameter of the medullary canal of the fibula was at 6.0 cm from the tip of the fibula, in 98.2% of the ankles. The distal fibula can be classified into triangular and rectangular type, according to the cortical thickness index (p < 0.0001). In 16.7% ankles, the internal diameter of the fibula at 6.0 cm was equal or narrower than 3.5 mm (p < 0.05).

CONCLUSION

The shape of the distal fibula as evaluated by CT-guided analysis allows for IM osteosynthesis of the lateral malleolus in 83% of individuals. In our study, the smallest diameter of the medullary canal of the fibula was located 6.0 cm from the tip of the lateral malleolus. Coronal CT evaluation is advantageous in indicating which type of IM implant should be used safely for infra- and transsyndesmotic fracture patterns, potentially reducing intraoperative risks.

Reproducibility of Bartoníček and Haraguchi classifications of the posterior malleolus fractures

BACKGROUND

Two of the most commonly used classifications for the posterior malleolus fracture are Haraguchi and Bartoníček. Both classifications are based on the morphology of the fracture. This study makes an inter- and intra-observer agreement analysis of the mentioned classifications.

METHODS

39 patients with ankle fractures who met inclusion criteria were selected. All the fractures were analyzed and classified twice by each of the 20 observers using Bartoníček and Haraguchi's classifications, with a window period of at least 30 days between the two rounds.

RESULTS

Analysis was made by Kappa coefficient (ƙ). The global intraobserver value was ƙ = 0.627 in the Bartoníček classification and ƙ = 0.644 in the Haraguchi one. The first round global interobserver ƙ = 0.589 (0.574-0.604) on the Bartoníček classification and ƙ = 0.534 (0.517-0.551) on the Haraguchi one. Second round coefficients were ƙ = 0.601 (0.585-0.616) and ƙ = 0.536 (0.519-0.554), respectively. The best agreement was when there was involvement of the posteromedial malleolar zone with ƙ = 0.686 and ƙ = 0.687 in Haraguchi II and ƙ = 0.641 and ƙ = 0.719 in Bartoníček III. No differences were observed in Kappa values when an experience-based analysis was made.

CONCLUSION

Bartoníček and Haraguchi classifications of the posterior malleolus fracture have both substantial intraobserver agreement but moderate to substantial agreement in interobserver analysis.

LEVEL OF EVIDENCE

IV.

Analysis of the cost-efficiency of the vascular impulse technology (VIT) in the perioperative management of complex ankle fractures: results of a prospective randomised controlled trial

INTRODUCTION

Posttraumatic swelling causes a delay in surgery, a prolonged hospital stay and a higher risk of complications. Thus, soft tissue conditioning following complex ankle fractures is of central importance in their perioperative management. Since the clinical benefit of VIT usage on the clinical course has been shown, it should now be investigated whether it is also cost-efficient in doing so.

MATERIALS AND METHODS

Included are published clinical results of the prospective, randomised, controlled, monocentric VIT study that have proven the therapeutic benefit in complex ankle fractures. Participants were allocated in a 1:1 ratio into the intervention group (VIT) and the control group (elevation). In this study, the required economic parameters of these clinical cases were collected on the data of the financial accounting and an estimation of annual cases had been performed to extrapolate the cost-efficiency of this therapy. The primary endpoint was the mean savings (in €).

RESULTS

Thirty-nine cases were studied in the period from 2016 to 2018. There was no difference in the generated revenue. However, due to lower incurred costs in the intervention group, there were potential savings of about €2000 (p_ITT = 0.073) to 3000 (p_AT = 0.008) per patient compared to the control group with therapy costs decreasing as the number of patients treated increases from €1400 in one case to below €200 per patient in 10 cases. There were 20% more revision surgeries in the control group or 50 min more OR time, respectively, and an increased attendance by staff and medical personnel of more than 7 h.

CONCLUSIONS

VIT therapy has been shown to be a beneficial therapeutic modality, but it is so not only in regard to soft-tissue conditioning but also cost efficiency.

Lateral malleolar crest and its clinical importance

PURPOSE

During study of anatomy of a fractured posterior malleolus of the ankle on CT scans, the authors noticed a prominent crest on the lateral malleolus, which they termed the lateral malleolar crest (LMC). As, in their view, LMC is a clinically important structure which was only briefly mentioned by a few authors without an official term, they focused on the anatomy of this structure.

MATERIALS AND METHODS

A total of 352 dry fibulae were analyzed and the following parameters recorded: (F) length of the fibula, (LMC) total length of LMC, (A) length of the part of the examined crest from the superior border of the articular facet of the lateral malleolus (AFLM) to its most proximal intersection with the midline of the fibula, (B) height of the medial triangular rough surface, and (A/F) A/F ratio.

RESULTS

The crest was observed in all specimens. (F) was 346.5 ± 26 mm (95% confidence interval [CI] 344-349), (LMC) was 85.4 ± 11.6 mm (95% CI 84.2-86.6), (A/F) was 25% ± 3% (95% CI 24.7-25.3) in the whole group. (A) was 25.9 ± 6.5 mm (95% CI 24.8-26.8) in the whole group, (B) was 34.9 ± 4.7 mm (95% CI 34.3-35.5) in the whole group, 36 ± 6.1 mm (95% CI 35.1-36.9).

CONCLUSION

LMC is an important structure on the lateral malleolus. The knowledge of its anatomy is essential for placement of syndesmotic screws or/and the fibular plate.

Venous thromboembolism in patients with surgically treated ankle fractures

OBJECTIVES

In patients with rotational ankle fracture, we compare the rate of venous thromboembolism development between patients who received chemoprophylaxis vs those patients that received none.

DESIGN

Retrospective cohort study.

SETTING

Level I trauma center.

PATIENTS/PARTICIPANTS

Between 2014 and 2018, we identified 483 patients with rotational ankle fracture that had no VTE risk factors, were under 70 years of age, and had an isolated injury.

INTERVENTION

Chemoprophylaxis vs no chemoprophylaxis after open reduction internal fixation of a rotational ankle fracture.

MAIN OUTCOME MEASUREMENTS

Development of VTE was the primary outcome. Secondary outcomes included wound problems, infection, hematoma, or non-union.

RESULTS

There were 313 patients that received no prophylaxis and 170 patients that received chemoprophylaxis after operative fixation of an isolated ankle fracture. Demographics including age, gender, body mass index, and ASA class were similar between groups. The rate of DVT/PE was 3.5% in those without DVT prophylaxis, and 4.1% in those on DVT prophylaxis with no significant differences found (p = 0.8). There was no significant difference in wound complication (no VTE prophylaxis-3.7% vs VTE prophylaxis-2.5%, p = 0.7) or infection rates (no VTE prophylaxis-3.8% vs VTE prophylaxis 4.1%, p = 1.0) between groups.

CONCLUSIONS

No difference was detected in the rate of symptomatic DVT or PE in patients based on chemoprophylaxis. Our results support the conclusion that the use of chemoprophylaxis may remain surgeon preference and based on patient risk factors for VTE development.

LEVEL OF EVIDENCE

Level III-retrospective cohort study.

Arthroscopically assisted versus open reduction internal fixation for ankle fractures: a systematic review and meta-analysis

BACKGROUND

Open reduction and internal fixation were routinely used to treat patients with unstable ankle fractures (ORIF). However, some patients may experience persistent ankle pain and disability following ORIF due to untreated intra-articular lesions. Moreover, ankle fractures may be treated with arthroscopically assisted reduction and internal fixation (ARIF). This study aimed to compare the feasibility and benefits of ARIF versus ORIF for ankle fractures.

METHODS

We performed this meta-analysis in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. A systematic search was conducted for comparative studies comparing ARIF and ORIF for ankle fractures. Nine studies were included in the analysis of clinical and secondary outcomes. In summary, we calculated the mean difference (MD), risk ratio (RR), confidence interval, and p value.

RESULTS

This meta-analysis demonstrated that the ARIF group achieved a higher Olerud-Molander Ankle (OMA) score (MD: 6.6; 95% CI 0.20 to 13.0; p = 0.04) and lower visual analog scale (VAS) score (MD: - 0.36; 95% CI - 0.64 to - 0.10; p = 0.01) at the final follow-up. Nevertheless, the smallest treatment effect of OMA score and VAS score did not exceed the minimum clinically important difference (MCID). There were longer surgery time (MD: 15.0; 95% CI 10.7 to 19.3; p < 0.01) and lower complication rates (RR: 0.53; 95% CI 0.31 to 0.89; p = 0.02) in ARIF compared with ORIF. The random-effect model suggested no significant difference in the arthritis change rate between the two groups.

CONCLUSION

In summary, the results of this meta-analysis indicated that ARIF and ORIF are comparable in terms of providing pain relief and improving function for patients with ankle fractures. Therefore, the choice between the two techniques should be based on the patient's individual factors and the surgeon's personal preference.