Maisonneuve fracture treated with short leg cast: A case report with 41-month follow-up.

RATIONALE: Maisonneuve fracture is a specific type of severe ankle injury. To our current knowledge, once a Maisonneuve fracture is diagnosed, the surgery is always recommended for fear of sequelae from inaccurate joint reconstruction. However, in this case, we treated a Maisonneuve fracture with a short leg cast, and the 41-month follow-up showed a favorable outcome with no post-traumatic osteoarthritis, chronic pain, and instability. Therefore, this case provides evidence for the feasibility of conservative treatment of Maisonneuve fracture. PATIENT CONCERNS: A female patient in her early twenties sprained her left ankle while running, suffering regional pain, swelling, and limited mobility. DIAGNOSES: We diagnosed a Maisonneuve fracture with superior fibular fracture and Volkmann tuberosity fracture, a slight separation of inferior tibiofibular syndesmosis (ITS). INTERVENTIONS: The patient rejected our surgical recommendations in favor of nonsurgical treatment, in addition to refusing immobilization of the knee. Consequently, we had to treat her with a short leg cast for 8 weeks and asked her to return for regular follow-up visits. OUTCOMES: At the final follow-up, the radiography showed complete healing of proximal fibula fracture. The patient reported no discernible subjective differences between her bilateral ankles. The range of motion of the left ankle was measured at 22° of dorsiflexion and 40° of plantarflexion. Functional assessments using Olerud-Molander ankle scale and American Orthopedic Foot and Ankle Society Ankle-Hindfoot scale both scored 100 points. Additionally, the radiographic assessment classified arthritis as stage 0 according to Morrey-Wiedeman classification. LESSONS: To avoid missing and misdiagnosing, the physical examination should always extend to 2 neighboring joints. Secondly, if a Maisonneuve fracture is suspected, further computed tomography scans, radiography, and magnetic resonance imaging can help to determine the stability of the ITS and the integrity of the lateral collateral ligaments before making therapeutic decisions. Finally, considering the lateral collateral ligaments may remain intact, we recommend stabilizing ITS by repairing the medial ligaments, which can be conducted arthroscopically and be more minimally invasive, providing an elastic fixation that aligns better with the biomechanics of the ITS which is characterized as a micro-mobile rather than fully fixed joint.

[Design and application of a device for radiographic projection of the tibio-astragalangeal mortise]. / Diseño y aplicación de dispositivo para proyección radiográfica de la mortaja tibio-astragalina.

INTRODUCTION: ligamentous injuries of the distal tibiofibular syndesmosis resulting in its opening are common occurrences in traumatology; however, their diagnosis poses a challenge for orthopedic surgeons. The tibioastragaloid mortise radiograph view is the most commonly used method for diagnosing this type of injury, but its reliability is compromised due to variations in ankle positioning during the study, which often depend on the operator. OBJECTIVE: to demonstrate that the designed device achieves a correct and consistent radiographic image of the distal tibiofibular syndesmosis in the mortise view. MATERIAL AND METHODS: we present a prospective, longitudinal, observational study. We designed a polypropylene device that maintains the ankle at 90 degrees of dorsiflexion and 15 degrees of internal rotation. The device was used to take mortise view radiographs of healthy ankles, and corresponding measurements were taken to assess the syndesmosis. RESULTS: we evaluated a total of 46 radiographs of healthy ankles, with a predominance of left ankles. The obtained measurements were as follows: anterior tibiofibular distance (ATFD) ranged from 3 to 6 mm, posterior tibiofibular distance (PTFD) ranged from 1 to 3 mm, tibiofibular clear space (TFCS) ranged from 2 to 3 mm, and a Merle D'Aubigne ratio of 2:1 was observed in all ankles. When comparing the measurements obtained with those established by Harper and Keller, no statistically significant difference was found (2 < 5). CONCLUSION: with the use of the designed device, we achieved a correct and consistent radiographic image of the mortise and the distal tibiofibular syndesmosis.

INTRODUCCIÓN: las lesiones ligamentarias de la sindesmosis tibioperonea distal que ocasionan apertura de la misma son muy frecuentes en traumatología; sin embargo, su diagnóstico es un reto para el cirujano ortopedista. La radiografía de la mortaja tibioastragalina es el método más utilizado para el diagnóstico de este tipo de lesiones, pero es poco confiable ya que la posición del tobillo durante el estudio suele variar dependiendo del operador. OBJETIVO: demostrar que con el uso del dispositivo diseñado se logra una imagen radiográfica correcta y constante de la sindesmosis tibioperonea distal en la proyección de la mortaja. MATERIAL Y MÉTODOS: estudio prospectivo, longitudinal y observacional. Diseñamos un dispositivo de polipropileno que mantiene el tobillo a 90 grados de dorsiflexión y rotación interna de 15 grados. Aplicamos el dispositivo para tomar radiografías de la mortaja en tobillos sanos y les realizamos las mediciones correspondientes para valorar la sindesmosis. RESULTADOS: valoramos un total de 46 radiografías de tobillos sanos, con un predominio de tobillos izquierdos. Las mediciones conseguidas fueron las siguientes: espacio tibioperoneo (ETP) de 3 a 6 mm, la superposición tibioperonea (STP) de 1 a 3 mm, espacio astrágalo-tibial medial (EATM) de 2 a 3 mm y una relación de Merle D'Aubigne de 2:1 en todos los tobillos. Al comparar las mediciones obtenidas con las establecidas por Harper y Keller, no se encontró una diferencia estadísticamente significativa (2 < 5). CONCLUSIÓN: con el uso del dispositivo diseñado, obtuvimos una correcta y constante imagen radiográfica de la mortaja y la sindesmosis tibioperonea distal.

[Comparative study of minimally invasive titanium elastic nail and steel plate on the treatment of fracture of tibiofibular fracture in adults].

OBJECTIVE: To compare the clinical outcomes of using elastic intramedullary nail and plate to fix fibular fracture. METHODS: The 60 patients with tibiofibular fractures admitted from January 2015 to December 2022 were divided into two groups:intramedullary nail group and plate group, 30 cases each, intramedullary nail group was treated with elastic intramedullary nail fixation group, plate group was treated with steel plate and screw fixation group. Intramedullary nail group, there were 18 males and 12 females, aged from 22 to 75 years old with an average of (39.4±9.8) years old, including 24 cases of traffic accidents injury, 6 cases of falling injury, 23 cases of closed fractures, 7 cases of open fractures. Steel plate group, there were 15 males and 15 females, aged from 24 to 78 years old with an average of (38.6±10.2) years old. The 22 cases were injured by traffic accident, 8 cases were injured by falling. The 24 cases were closed fractures and 6 cases were open fractures. The operation time, intraoperative bleeding, American Orthopedic Foot and Ankle Society (AOFAS) ankle and hind foot scores, clinical healing time of fibula and the incidence of wound complications were compared between the two groups. RESULTS: The patients in both groups were followed up for 6 to 21 months, with an average of (14.0±2.8) months. Compared with plate group, intramedullary nail group had shorter operative time, less bleeding, shorter clinical healing time of fibula, and lower infection rate of incision, and the difference was statistically significant (P<0.05). There were 2 cases of delayed healing in intramedullary nail group, 1 case of nonunion in plate group, and 2 cases of delayed healing in plate group, and there was no statistically significant difference between the two groups (P>0.05). In the last follow-up, according to the AOFAS scoring standard, the ankle function in intramedullary nail group was excellent in 17 cases, good in 12 cases, fair in 1 case, with an average of (88.33±4.57) points, while in plate group, excellent in 16 cases, good in 10 cases, fair in 4 cases, with an average of (87.00±4.14) points;There was no statistical difference between the two groups (P>0.05). CONCLUSION: Elastic intramedullary nail has the advantages of short operation time, less intraoperative bleeding, short fracture healing time and less incision complications in the treatment of fibular fracture, which is worthy of clinical application.

Subtrochanteric femur nonunion - Chasing the elusive an analysis of two techniques to achieve union: Nail-plate fixation and plate-structural fibula graft fixation.

INTRODUCTION: The subtrochanteric region is known for its unique biomechanical properties that contribute to challenges in fracture reduction. To ensure optimal fracture healing, achieving robust mechanical stability is essential. There are very few studies in the literature describing the treatment of subtrochanteric fracture nonunion. PURPOSE: To analyze the outcomes of two techniques of revision fixation of nonunion in subtrochanteric femur fracture, namely, nail-plate fixation and plate-structural fibula graft fixation. METHODS: This was a retrospective analysis of subtrochanteric femur nonunion between January 2011 and December 2019. The demographic details, details of the index surgery, details of the revision surgery and the time to final union were collected. The nonunion was divided based on the level of the fracture into high subtrochanteric and low subtrochanteric. Two revision techniques were used: plate-structural fibula graft for high subtrochanteric and nail-plate construct for low subtrochanteric femur fractures RESULTS: Out of the 54 patients that were included, there was malalignment in 53.70 %, medial comminution in 46.3 %, distraction at the fracture site in 44.4 %, lateral trochanteric wall break in 37.03 % and implant failure in 70.37 % of the patients. There were 20 high subtrochanteric and 34 low subtrochanteric fractures. Union was achieved in 53 patients (98.14 %). The mean LEFS score was 71.4 in the nail-plate group and 66.2 in the plate-structural fibula graft group (p 0.003). CONCLUSION: The treatment of subtrochanteric femur fracture nonunion can be a daunting task. The goal is to correct the varus and restore the medial support which will prevent the occurrence of collapse and another failure. We were able to achieve this with both the nail-plate and the plate- structural fibula graft revision methods.

Measuring External Rotation of the Fibula and Fibular Length in Bilateral Computed Tomography Scans: How Reliable Is This Method?

OBJECTIVES: During ankle fracture surgery, goals include accurate reduction and fixation of the fibula regarding rotation and fibular length. Bilateral postoperative computed tomography (CT) can be performed to assess fibular rotation using the talar dome angle, and fibular length. The aim of this study was to compare side-to-side differences of the fibular rotation and fibular length using bilateral CT scans of uninjured ankles. DESIGN: Retrospective. SETTING: Single center, Level I Academic Trauma Center. PATIENT SELECTION CRITERIA: Patients with bilateral CT scans of uninjured ankles. OUTCOME MEASURES AND COMPARISONS: External rotation using the Nault talar dome method and fibular length using the coronal method of Prior et al. The average, difference, and ratio (injured side/healthy side) and interobserver variability were calculated. RESULTS: There were 83 patients included (166 ankles, mean age 47 years, 77.1% male). A random set of 66 ankles (33 CT scans) were used to measure interobserver variability. The mean degrees of external rotation ranged from 6.6 to 7.7, mean difference ranged from 1.4 to 3.4 degrees, mean ratio ranged from 1.1 to 1.5, and interobserver variability ranged from 0.27 to 0.65. For fibular length, the mean ranged from 24.6 to 25.8 mm, mean difference in fibular length ranged from 0.5 to 2.1 mm, mean ratio ranged from 1.0 to 1.1 mm, and interobserver variability ranged from 0.45 to 0.73. CONCLUSIONS: Using bilateral ankle CT scans, mean differences in fibular rotation using the Nault talar dome method were 1.4-3.4 degrees. The distal fibular length had a mean difference between both sides of 0.5-2.1 mm. Although the intraclass correlation's were low, the interleg differences between patients were small, making them useful for clinical practice. LEVEL OF EVIDENCE: Diagnostic Level III. See Instructions for Authors for a complete description of levels of evidence.

The additional value of weight-bearing radiographs in assessing stability of isolated type B fibular fractures.

INTRODUCTION: In isolated type B fibular fractures, the decision whether to operate or treat conservatively is principally based on congruency and stability of the ankle joint. The purpose of the current study is to examine the additional diagnostic value of the weight-bearing radiograph (WBR) in assessing stability of potentially unstable type B fibular fractures. MATERIALS AND METHODS: In this retrospective cohort study, patients were selected based on who presented an isolated type B fracture of the fibula. Unstable fractures were directly planned for surgery. Other patients underwent additional weight-bearing imaging 4-7 days after initial trauma, on which definitive treatment was based. The medial clear space (MCS) was compared between the WBR and the conventional radiograph. RESULTS: A total of 70 patients were included in the period January 2018-December 2021. The average MCS on conventional mortise radiograph was 3.56 mm compared to 3.02 mm on the WBR(p<0.05). The superior clear space (SCS) was equal between both groups (respectively 3.12 mm and 3.08 mm, p = 0.44). All 70 patients were initially treated conservatively with immediate weight-bearing in a brace or soft cast. One patient had the need for open repair and internal fixation due to non-union. DISCUSSION: Different techniques for the assessment of deep deltoid ligament integrity exist, such as the MRI, the ultrasonography and different kinds of stress test radiographs. As fractured ankles don't need direct fixation and operative treatment can be postponed, a stepped approach for the assessment of deep deltoid ligament (DDL) integrity can be of assistance in assessing ankle stability. In isolated type B fibular fractures a stepped approach, using the weight-bearing radiograph can be of additional value in assessing the stability. It is a low cost, prevents unnecessary surgery and contributes to a quick weight-bearing non-operative treatment.

Morphology of Fibular Incisura is a Deciding Factor Between Posterior Malleolus Avulsion Fracture or Syndesmotic Ligament Injury in Ankle Fractures.

The bone anatomy of tibiofibular syndesmosis has been a topic of interest. Fibular incisura morphology has been analyzed on cadaver specimens, plain radiographs, or CT images. The aim of this study is to examine the effects of fibula incisura features and fibula morphology in ankle injuries, especially involving posterior malleolus and posteroinferior tibiofibular ligament injuries. From 2017 through 2022, A total of 59 patients with isolated lateral malleolar fracture, Mason-Malloy type 1 posterior malleolar fracture, syndesmosis injury in those without posterior malleolar fracture, supination external rotation type 3 injuries according to Lauge-Hansen classification, and preoperative bilateral ankle computed tomography images were included in the study. Fibula morphologies and syndesmosis measurements were made from preoperative computed tomography images using axial CT images from 1 cm proximal to the tibial plafond. The diagnosis of posterior malleolar fractures was made using the CT classification system of Mason and Malloy, and the diagnosis of syndesmosis injury was made with a cotton test during surgery. Age, gender, fractured side, incisura type, incisor depth, width, anterior and posterior facet lengths, incisor version (antevert-retrovert), the angle between the anterior and posterior facets, and fibula type were recorded. There was a statistically significant difference between the groups in posterior facet length and incisura width. Morphological features of fibular incisura may be the determinant of PITFL injury or PMA injury in fibular fractures caused by an external rotation mechanism.

Cost analysis and clinical outcomes of anatomic pre-contoured locking versus conventional plates for distal fibula ankle fractures.

PURPOSE: To analyze differences in union, complication rates and cost from surgical fixation of distal fibula fractures with fibular plating implants. METHODS: In total, 380 adult patients from 2012 to 2015 treated with 12 fibular plates from 4 different manufacturers utilized by 9 surgeons were retrospectively reviewed. They were stratified into a conventional one-third tubular fibular plate group, pre-contoured anatomic locking plate group, or a heterogeneous group including 3.5-mm reconstruction, one-third tubular locking, composite, and limited compression plates. The outcomes included failure of fixation, deep infection requiring debridement, time to union, anatomic reduction, superficial infection, hardware removal, and post-traumatic arthritis. Plate and screw costs were calculated from hospital billing records. RESULTS: Pre-contoured locking plates were used in older, female patients with a greater number of comorbidities. Open injuries and OTA 44B fractures were more likely to be an indication for pre-contoured plates. There was no difference noted in time to union between the different plating groups. Risk factors for deep infection requiring debridement included a history of tobacco use, open fractures, and pre-contoured locking plates relative to the conventional plating group. The pre-contoured plating group was on average $586 more expensive compared to the conventional group. CONCLUSION: Pre-contoured locking plates achieved similar radiographic outcomes compared to conventional plates with an increased risk of complications and higher cost. Surgeons should consider their choice of implant based on the patient's fracture pattern, underlying comorbidities, and risk for infection.

Healed ORIF in a fibula fracture - Hardware removal or hardware retention for the fibula in a patient with minor symptoms?

HISTORY: - A 31yo female is involved in a fall while climbing on some wet rocks. She was brought into the emergency department and was found to have suffered a closed fracture of the right fibula with a deltoid ligament injury. Distal neurovascular exam was normal. She is otherwise unhurt. She had ORIF of her ankle injury and it has gone onto heal with good results. She comes back at 6 months and complains of vague pain over her lateral ankle and hardware with a normal physical exam. She wonders about hardware removal, (Figs. 1 and 2). PAST MEDICAL HISTORY: - previous history of breast reduction surgery and she has delivered one child vaginally. No chronic diseases and she takes no pills except the birth control pill. SOCIAL HISTORY: - married with one child and works as an administrative assistant for a manufacturing company; she is a social drinker and nonsmoker. Has a history of using some recreational drugs but none for 10 years. She is moderately active.

Should We Fix the Fibula in Tibial Plafond Fractures? A Meta-analysis Reviewing the Evidence Base for Fibula Open Reduction and Internal Fixation in Tibial Plafond Fractures.

Open reduction and internal fixation are the standard of care to stabilize tibial plafond fractures. However, it remains uncertain as to whether fixation of the fibula affects the outcome. This study aimed to review the evidence base for comparable outcomes in tibial plafond fractures when undergoing open reduction and internal fixation of ipsilateral fibula fractures compared with open reduction and internal fixation of the tibia alone. A systematic review and meta-analysis of the literature was completed; 4 studies were included for analysis. This study demonstrated no statistically significant differences in the incidence of nonunion (p = .784) or mal-union (p = .416). There was a greater rate of removal of metalwork in the fibula operative group compared to the tibia alone group (p < .001). The current evidence demonstrates that open reduction and internal fixation of ipsilateral fibula fractures in tibial plafond fractures is not necessarily routinely indicated for all fractures.

Simultaneous Free Fibula and Anterolateral Thigh Flap in Lower Extremity Reconstruction Following Osteomyelitis in a Trauma Patient: A Case Report.

This case report focuses on a 17-year-old polytrauma patient who suffered a septic wound infection after an open reduction and internal fixation (ORIF) and soft tissue reconstruction with a pedicled flap, which led to a substantial bone and soft tissue defect of the lower leg. After thorough antibiotic treatment and after ensuring a non-septic wound, the defect was reconstructed using a contralateral free fibula flap designed as a flow through flap in a double loop manner to accommodate two fibular fragments and an ipsilateral ALT flap. Early weight bearing was initiated 11 days after the free flap transfer under external fixation, with full weight bearing achieved in 36 days with external fixation. After the removal of external fixation, full weight bearing was able to be reinitiated after 13 days, leading to the patient's return to normal activity 6 months after the bony reconstruction. This case presents an innovative approach to treating a complex defect, with the final decision on using two separate free flaps instead of a single osteofasciocutaneous free flap resulting in a good bony reconstruction and soft tissue coverage, and with the use of external fixation enabling early rehabilitation.

Differences in Pilon Fractures According to Ipsilateral Fibular Injury Patterns: A Clinical Computed Tomography-Based Mapping Study.

Background: Preoperative verification of fracture morphology is essential for determining the definitive fixation strategy in the management of a pilon fracture. This study aimed to determine the correlation between fibular injury patterns and fracture morphologies and introduce clinical implications. Methods: Computed tomography scans of 96 pilon fractures were retrospectively analyzed and divided into three types: intact fibula, simple fracture, and multifragment fracture. The principal fracture line and comminution zones were illustrated on a plafond template and diagrammatized on a 6 × 6 grid using PowerPoint software as fracture mapping. Correlations between fibular injury patterns and fracture morphologies, including comminution zones and principal fracture lines, were analyzed. Results: The thickest comminution zone was most often located in the anterolateral quadrant. According to fibular injury patterns, the comminution zone of the multifragment group was placed two grids more lateral than that of other groups. Lateral exits of the principal fracture line in the multifragment group were much more concentrated within the fibular incisura. Conclusions: In pilon fractures, a more complex fibular fracture pattern was related to the valgus position. Moreover, the articular fracture pattern of pilon fractures differed according to coronal angulation and fibular fracture pattern. These differences should influence the operative approach and placement of the plate.

Investigation of the Characteristics and Mechanism of Interosseous Membrane Injuries in Typical Maisonneuve Fracture.

OBJECTIVES: Previous studies on the mechanism and scope of interosseous membrane injury in Maisonneuve fractures have been inconsistent. In order to better guide clinical treatment, the characteristics and mechanism of interosseous membrane injuries and proximal 1/3 fibular fracture in typical Maisonneuve fracture were investigated. METHODS: The study comprised 15 patients between January 2019 and June 2021 with Maisonneuve fracture. All patients received X-ray and MRI examination of the calf and ankle joint, and CT scanning of the ankle joint. The injuries of medial structure, inferior tibiofibular syndesmosis, fibula, posterior malleolus, and interosseous membrane were evaluated. RESULTS: MR images of the calf showed that the injury of interosseous membrane (IOM) was from the syndesmosis to the proximal fibular fracture site in two patients, with a range of 32.3 and 29.8 cm, respectively. In the other 13 patients, the IOM rupture was not only confined to the distal third of the calf, but also close to the fibula fracture, and the IOM was intact between the two fracture sites. The range of distal IOM rupture was 3.7-12.2 cm, with an average of 8.06 ± 2.35 cm. The proximal IOM was completely ruptured from the fibular side at the site of the fibular fracture and the range was 4.1-9.1 (average: 6.75 ± 1.64) cm. The average length of the integrate middle segment of the IOM was 14.55 ± 4.11 (5.6-20.3) cm. MR images of the calf also showed partial rupture of the posterior tibial muscle at the ending point on the fibula in 15 cases, partial rupture of soleus muscle and flexor hallucis longus in seven cases. CONCLUSIONS: The rupture of the IOM was caused by a combination of abduction and external rotation violence. It was manifested in two forms, most of which was not only distal end but also near fibular fracture site ruptures with the middle part intact, and a few were ruptures of the IOM from the ankle to the near fibular fracture site. The tibialis posterior muscle may be related to the location of the fibular fracture.

Open lower extremity fractures in the geriatric population.

INTRODUCTION: Open fractures in the elderly are distinct compared to younger populations. The purpose of this study is to follow a series of open fractures of the lower extremity in the geriatric population to better prognosticate outcomes. METHODS: We performed a retrospective chart review of patients over the age of 65 years old who were treated for an open, lower extremity fracture across two level I trauma medical systems. Patients were included if they had documented wound healing problems in the postoperative period, or 6 months of follow-up, or if they had a definitive radiographic outcome. Sixty-four patients were included of an average age of 76.23, of whom 73.4% were female. RESULTS: The fracture types were midshaft femur in 3, distal femur in 9, patella in 2, proximal tibia in 3, proximal fibula in 1, midshaft tibia in 14, distil tibia in 8, ankle in 23, and talar neck/calcaneus in 1. Forty-two fractures were the result of low energy mechanism and 22 fractures were from high energy mechanism. Fourteen fractures were type 1, 32 were type 2, 11 were type 3A, 6 were type 3B, and 1 was type 3C. At final follow-up, 13 wounds were well healed, 39 wounds were healed following a delay of more than 6 weeks to achieve healing, 3 were infected, 3 had been treated with amputation, 2 had chronic ulceration, 2 with active draining, and 2 had draining sinuses. DISCUSSION: Open lower extremity fractures are serious injuries with high rates of morbidity. Such risks are even higher in the geriatric population, particularly with regard to wound healing. This study provides important prognostic information in counseling geriatric patient with an open lower extremity fracture, as well as informs treatment in terms of wound surveillance and care in the postoperative period.

Fibular Rod Osteosynthesis in Ankle Fractures With Compromised Soft Tissue.

BACKGROUND: Complications after plate and screw fixation of ankle fractures are frequently reported in the literature, with a higher rate in patients with advanced age, comorbidities, and poor skin conditions. A reduced complication rate has been reported with intramedullary nailing (IMN) of the fibula; however, the indication has been based on the surgeon's preferences. We report the results after IMN in patients with compromised soft tissue exclusively. METHODS: A total of 71 patients with 72 distal fibula fractures were included in this retrospective study. Information about medical history, the ankle injury, treatment, and complications were collected from the medical records. Additionally, the preinjury and 6-week follow-up radiographs were evaluated. RESULTS: Postoperative information was available for a minimum of 4.3 years postoperatively or until death. In all, 10 patients had complications related to the nail and required secondary surgery. These included 6 symptomatic hardware issues, 2 construct failures, 1 deep infection, and 1 combined deep infection and construct failure. CONCLUSIONS: After IMN of the fibula, 14% of the patients required reoperation. Our results support the previous literature suggesting IMN as an acceptable surgical alternative where the risk of complications with plate and screw fixation is considered too high. Compromised soft tissue is one important indication. LEVEL OF EVIDENCE: Level IV: Case series without control.

What is the best treatment for syndesmosis fixation? Suture-button or syndesmotic screw ? Bilateral CT-based early postoperative analysis.

BACKGROUND: The aim of this study was to compare the effectiveness of syndesmotic screw (SS) and suture button (SB) on the reduction and fixation of syndesmosis via early postoperative bilateral computed tomography (CT). METHODS: This single-center retrospective study included 76 patients aged ≥ 18 years with a unilateral syndesmosis injury. SS was applied to 40 patients and SB to 36 patients. The differences between the sides stabilized using SB or SS and the intact sides were analyzed using the parameters of tibio-fibular clear space (∆CS) and anterior or posterior sagittal translation (∆ST) depending on the orientation of the fibula. The cases in which the fibula was translocated to the posterior of the tibia after the change of ∆ST and ∆CS> 2 mm were evaluated as malreduction. Axial CT images taken from the level of syndesmosis fixation were divided into 4 zones according to the orientation angle of the implant sent from the fibula to the tibia. RESULTS: No significant difference was found in the analyses performed between total patient group with malreduction and fixation groups in terms of ∆CS and ∆ST values (p = 0.708, p = 0.289). It was observed that the fixation material was in zone 3 in 54 patients and in zone 2 in 22 patients. No significant difference was found in the analyses performed between the SS and SB groups according to the implant zone (p = 0.191). In the SS group sent from Zone 2, the malreduction rate according to the ∆ST value of syndesmosis was found to be significantly higher than in the SB group (p = 0.008, p = 0.003). CONCLUSION: When the implant is applied with the correct technique, there is no difference between SS and SB in terms of early postoperative reduction. When the SS is advanced at an inappropriate angle, it negatively affects the reduction of the fibula, while SB can better tolerate angle errors up to certain degrees due to its flexible structure. Therefore, it can be presumed that the suture button system is a more convenient method in the reduction and fixation of syndesmosis than the syndesmotic screw. LEVEL OF EVIDENCE: Level IV.

Safe drilling zones for anteriorly, central, and posteriorly angulated syndesmotic stabilization devices.

PURPOSE: The purposes of the study were to (1) analyze the shape of the distal fibula at the location of syndesmotic stabilization and to (2) define safe zones at the distal-lateral fibula for three different drilling tunnel orientations: anteriorly-, posteriorly angulated and center-center. METHODS: Postoperative, bilateral CT images of adult patients that underwent syndesmotic stabilization (suture-button system) for an acute, unilateral ankle injury were analyzed. Manual axial CT reconstructions of the uninjured side were generated. First, the axial shape of the distal fibula was classified. The aspect ratio between the anterio-lateral and the posterior-lateral surfaces of the fibula was calculated to assess symmetry. Second, the same axial planes were used to define the safe zones. Each drilling-tunnel orientation (anterior, central, posterior) comprised a fixed medial tibial anchor point and a safe zone on the lateral fibula. For each of the three orientations, the most anteriorly and posteriorly drilling tunnel location was simulated. Next to a cumulative visual analysis, a quantitative analysis of the most anterior and posterior point on the anterio- and posterior-lateral surfaces was calculated. RESULTS: A total of 96 CT datasets were analyzed. (1) 81% of fibulae revealed a triangular convex-, 10% an irregular-, and 8% a quadrilateral shape. The lateral surface ratio was 1.0 ± 0.2 (range: 0.7-1.5), not differing between the fibula types (n.s.). (2) The safe corridor on the lateral surface of the fibula for an anteriorly angulated drilling tunnel was - 8% to - 41%, for a posteriorly angulated drilling tunnel was 0% to 46%, and for a center-center alignment - 7 ± 11% (range: - 28 to 18%). CONCLUSION: The meta-diaphyseal region of the distal fibula revealed a homogeneous crosssectional shape. The lateral apex of the fibula can serve as a landmark defining safe zones to place the drilling tunnels correctly. Applying these safe zones in clinical practice could help to avoid the misplacement of the syndesmotic fixation device. LEVEL OF EVIDENCE: Level III, retrospective radiographic study.

Can Locked Fibula Nail Replace Plate Fixation for Treatment of Acute Ankle Fracture? A Systematic Review and Meta-Analysis.

The standard surgical treatment for unstable ankle fractures involves open reduction and internal fixation (ORIF) with plates. However, ORIF has been associated with several complications, such as soft tissue irritation, wound infection, and nerve injury. Previous studies have shown that closed reduction and internal fixation with locked intramedullary nails (LIMNs) yields satisfactory efficacy in the treatment of ankle fractures and is associated with low complication rates. Therefore, a systematic review and meta-analysis of randomized controlled trials is imperative to provide evidence on whether or not LIMN fixation is comparable to or superior than traditional ORIF. We conducted a comprehensive literature search in the PubMed, Cochrane Library and EMBASE databases. A total of 4 randomized controlled trials involving 359 participants who suffered ankle fractures were included in this systematic review and meta-analysis. The results showed that the LIMN fixation group was statistically significant in terms of functional outcomes at the 3-month follow-up and wound-related complications. There was no statistical advantage for patients in the LIMN fixation group in terms of nonwound-related complications, total complications, or mid-term follow-up functional outcomes. There was no statistical difference between the LIMN and ORIF groups regarding operation time and quality of reduction. We believe LIMN fixation is a viable option for the treatment of unstable ankle fractures in both young and elderly individuals.

El peroné flotante: resultado de una luxación tibioastragalina pura con lesión de la articulación tibioperonea proximal: reporte de caso / The floating fibula: outcome of pure tibiotalar dislocation with lesion to the proximal tibiofibular joint: case report

ANTECEDENTES El peroné flotante tras un traumatismo de alta energía es una entidad muy poco frecuente. Este es el primer reporte de caso asociado a luxación del tendón bicipital. OBJETIVO Presentar un caso de peroné flotante tras luxación divergente de tobillo asociado a luxación peronea proximal. MATERIALES Y MÉTODOS Mujer de 17 añ que, tras accidente de tráfico, sufrió caída y presentó dolor y deformidad del tobillo izquierdo, junto con dolor e impotencia funcional de la rodilla ipsilateral. En las radiografías, se apreció una luxación pura divergente del tobillo izquierdo de tipo IV. Se realizó reducción cerrada en urgencias. El estudio se complementó con una resonancia magnética que mostró una rotura completa de la sindesmosis y del ligamento deltoideo, así como una fractura no desplazada de la meseta tibial externa, junto con un desgarro de la cápsula tibioperonea proximal y desprendimiento completo del ligamento lateral externo y del tendón bicipital desde su inserción en la cabeza del peroné. Se realizó reanclaje de la sindesmosis y del ligamento deltoideo, así como del ligamento lateral externo y del tendón bicipital mediante anclajes óseos metálicos y reducción de peroné tanto proximal como distalmente, mediante sistema de sutura tipo botón. Se inmovilizó con férula cruropédica por cuatro semanas. RESULTADOS La paciente presentó recuperación completa de la fuerza a los cinco meses de seguimiento, con movilidad completa del tobillo y de la rodilla. CONCLUSIÓN El peroné flotante es muy poco frecuente; sólo se ha descrito un caso en la literatura. Implica la disrupción de la articulación tibioperonea proximal y distal, lo que puede provocar inestabilidad en la rodilla y en el tobillo. Por tanto, ante un traumatismo de alta energía en el tobillo, es necesaria la exploración minuciosa de la rodilla ipsilateral.

BACKGROUND Floating fibula after high-energy trauma is a very uncommon entity. The present is the first report of a case associated with avulsion of the bicipital tendon. PURPOSE To present a case of floating fibula after divergent ankle dislocation associated with proximal peroneal dislocation. MATERIALS AND METHODOS A 17-year-old woman who fell after a traffic accident and presented pain and deformity of the left ankle with pain and functional impotence in the ipsilateral knee. The radiographs showed a pure divergent type-IV left-ankle dislocation. Closed reduction was performed in the emergency room. The study was complemented with a magnetic resonance imaging scan which showed complete rupture of the syndesmosis and the deltoid ligament, as well as a non-displaced fracture of the external tibial plateau together with a tear of the proximal tibiofibular capsule and complete detachment of the external lateral ligament and bicipital tendon from its insertion in the peroneal head. The syndesmosis and deltoid ligament were reanchored, as well as the external lateral ligament and the bicipital tendon, using metallic bone anchors and fibula reduction both proximally and distally, using a suture-button system. The patient was immobilized with a long-leg splint for four weeks. RESULTS The patient presented complete recovery of strength at five months of follow-up. CONCLUSSION Floating fibula is a rare entity, with only one case described in the literature. It involves a disruption of the proximal and distal tibiofibular joint, which can lead to knee and ankle instability. Therefore, in cases of high-energy trauma to the ankle, a careful examination of the ipsilateral knee is necessary.

Minimum 5-Year Follow-up Results: CROSSBAT (Combined Randomised and Observational Study of Surgery vs No Surgery for Type B Ankle Fracture Treatment).

BACKGROUND: Isolated Weber B, AO (Association for the Study of Internal Fixation) type 44B ankle fractures with no fracture to the medial side are the most common type of ankle fracture and may be treated with internal fixation or without surgery.This study aimed to determine if surgery is superior to nonsurgical management for the treatment of these fractures after a minimum 5-year follow-up. METHODS: Design: A pragmatic, multicenter, single-masked, randomized controlled trial with minimum 5-year follow-up. Setting/participants/interventions: Participants between 18 and 65 years with AO type 44B ankle fracture and minimal talar shift were recruited from 22 hospitals in Australia and New Zealand. Participants willing to be randomized were randomly allocated to undergo surgical fixation followed by mobilization in a walking boot for 6 weeks. Those treated nonsurgically were managed in a walking boot for 6 weeks. Outcome assessors were masked for the treatment allocation. Primary outcomes: Patient-reported ankle function using the American Academy of Orthopaedic Surgeons Foot and Ankle Outcomes Questionnaire (FAOQ) and the physical component summary (PCS) of the SF-12v2 General Health Survey at 12 months postinjury and at minimum 5 years post injury. Primary analysis was intention-to-treat. RESULTS: Of the 160 (80 surgical, 80 nonoperative) randomized patients included in the CROSSBAT analysis, 77 (40 surgical, 37 nonoperative) were followed up for repeat analysis at minimum 5-year follow-up (mean 7.3 years, range 5.1-8.9). This cohort demonstrated that surgery was not associated with clinically or statistically significant differences compared to nonoperative management for the FAOQ (51.7 vs 49.6; mean difference 2.1, 95% CI -2.1 to 6.2, P = .95), or the PCS (51.5 vs 49.1; mean difference 2.3, 95% CI -2.0 to 6.7, P = .54). The surgical cohort had a higher rate of any adverse events (odds ratio 3.7, 95% CI 1.2-11.6, P = .04). CONCLUSION: The results of this study suggest that surgical management is not superior to nonsurgical management in type B ankle (fibula) fractures with minimal talar shift over a 5-year period and is associated with increased adverse events. LEVEL OF EVIDENCE: Level II, randomized clinical trial.