Dynamic Fixation Versus Static Fixation for Distal Tibiofibular Syndesmosis Injuries: A Meta-Analysis

Syndesmotic Screw Fixation Versus Suture Button Versus Tibiotalocalcaneal Nail Treatment in Syndesmotic Ankle Fractures: A Meta-Analysis

BACKGROUND

Syndesmotic ankle fractures occur when damage to the syndesmosis complex is combined with a malleolar fracture. This can result in severe pain, weakness, and instability. Surgical interventions include syndesmotic screw fixation (SS), suture button fixation (SB), and tibiotalocalcaneal nail (TTC). This meta-analysis aims to compare the outcomes of these treatment methods for syndesmotic ankle fractures.

METHODS

A literature search was conducted on PubMed and Embase for comparison studies that included at least 2 surgical interventions and at least one of the relevant functional outcomes and/or complication metrics until June 2024. The Olerud-Molander Ankle Score (OMAS) was used to compare functional outcomes, and it is a self-reported outcome measure that evaluates the symptoms and function of those with ankle fractures, while infections and reoperations were reported to compare complication outcomes. Statistical analyses were performed using Review Manager 5.4. A P-value ≤ .05 was considered statistically significant. The risk of bias was assessed with Review Manager 5.4. and the Newcastle-Ottawa scale.

RESULTS

A total of 18 studies with a total of 1,040 patients were ultimately included in this study. The SS had a significantly higher OMAS 2-year follow-up compared to TTC. The TTC had a significantly lower infection rate compared to SS. The SB had a significantly higher OMAS at both 1-year and 2-year follow-ups than SS. The SB had a significantly lower reoperation rate compared to SS. The SB had a significantly higher OMAS at both 1-year and 2-year follow-ups than TTC. The SB had a significantly lower infection rate compared to TTC.

CONCLUSION

The SB emerges as the preferred treatment method for syndesmotic ankle fractures, while TTC stands as a viable alternative. The SB is recommended as the primary surgical intervention for patients with syndesmotic ankle fractures due to its superior clinical benefits when compared to TTC and SS.

LEVELS OF EVIDENCE

3.

Long-term Clinical Outcomes After Syndesmosis Fixation With K-wires in Ankle Fractures With Syndesmotic Instability

Background

Syndesmotic instability is a significant concern in the management of unstable ankle fractures, occurring in approximately 10% to 13% of these cases. Early recognition and stabilization of syndesmotic injuries are essential to ensure optimal long-term outcomes. Several techniques are currently in use, often involving complex procedure and/or costly devices. Our study presents a syndesmosis fixation technique using K-wires that is both simple and cost-effective.

Methods

This is a retrospective single-center case series. Three hundred seventy-seven ankle fractures with intraoperative syndesmosis instability and subsequent syndesmosis fixation with a K-wire were treated between 2002 and 2012. Of the 377 patients, 51 died and we were able to obtain long-term questionnaire completions from 94 patients (29% of presumed living patients), with a mean follow-up of 10.6 ± 3.0 years.

Results

The mean age was 46.6 ± 18.5 years; 42% were Danis-Weber type B and 58% type C fractures. Syndesmosis fixation failure was observed in 9 (2%) patients, and 5 (1%) patients had K-wire displacement without loss of syndesmosis reduction. The Manchester-Oxford Foot Questionnaire (MOXFQ) was obtained 10±3 years after surgery. The mean MOXFQ pain score was 25.9 ± 25.4, the mean functional score was 18 ± 24.8, and the mean social score was 13.7 ± 22.2.

Conclusion

We report long-term (10.6 ± 3 years) functional outcomes using a validated patient-reported questionnaire in patients who underwent syndesmosis fixation with 2 K-wires for unstable ankle fractures. In the subset of patients we were able to find in follow-up, we found low rates of syndesmosis fixation failure, low pain scores, and excellent functional outcomes. The availability and low cost of these implants make this technique an accessible and cost-effective solution to consider for syndesmosis fixation.

Level of Evidence

Level IV, retrospective case series.

Management of Syndesmotic Ankle Injuries: Results of a Survey of Pediatric Orthopaedic Society of North America Members

Background

Although utilization of dynamic suture-button fixation for adult syndesmotic injuries has shown improved outcomes over static screw fixation, data in pediatric populations is limited. This study evaluated trends in management and identified factors influencing surgeon choice of implant for pediatric syndesmotic injuries.

Methods

The Pediatric Orthopaedic Society of North America (POSNA) members were surveyed regarding syndesmotic injury implant preferences between October 2021 and May 2022. Respondents that opted out, treated <1 syndesmotic ankle injury in the past year, or had conflicting financial obligations were excluded. Results were summarized and analyzed using logistic regression to assess for significance between years posttraining and technique preference. Odds ratios (OR) and 95% confidence intervals (CI) were calculated for significance (P-values<.05).

Results

Among 103 respondents to the survey (with 102 complete responses), 25% were <5 years posttraining, 24% between 5 and 10 years, 21% between 11 and 15 years, and 28% ​> ​15 years posttraining. Twenty-four percent (24/102) preferred screw versus 76% (78/102) preferring suture-button implants for syndesmotic injuries. Members >15 years posttraining were 4.7 times more likely to prefer screw implants compared to members <5 years posttraining (OR ​= ​4.7; 95% CI, 1.14-19.34; P ​= ​.03). Since starting their clinical practice, 62 respondents (60%) reported an implant preference change, with avoidance of secondary surgery (46/62; 74%) and extrapolation from adult outcomes (39/62; 63%) cited as primary motivating factors. Of the 40 members with no preference change, comfort with the procedure was the primary cited reason (33/40; 83%). Among those choosing operative intervention, radiograph-based cases showed preference for the suture-button in 70%-79% of respondents for skeletally mature patients versus 71%-81% for skeletally immature patients.

Conclusions

Our data shows that the shift over time from screw to suture-button implant fixation for pediatric and adolescent syndesmotic ankle injuries is largely due to interest in avoiding implant removal and extrapolation from superior outcomes seen with suture-button use in adults. Larger comparative studies of pediatric and adolescent patients treated with suture-button versus screw fixation are needed to establish standards of care for these challenging injuries.

Key Concepts

(1)Literature for operative syndesmotic injury management in adults has shown improved outcomes of dynamic suture-button fixation over static screw fixation, but data in pediatric and adolescent populations is limited.(2)A survey of 102 POSNA members shows that 76% prefer suture-button, 24% prefer screw fixation with members >15 years posttraining 4.7 times more likely to prefer screw fixation to members <5 years posttraining.(3)Among 62 respondents who switched implant preference during their clinical practice, avoidance of secondary surgery and extrapolation from outcomes in adults were the two most cited reasons.(4)Among 40 respondents who did not switch implant preference, comfort with the procedure was the most cited reason.(5)Comparative studies of suture-button versus screw implants for treatment of pediatric and adolescent syndesmotic ankle injuries are needed to establish an evidence-based standard of care management.

Level of Evidence

Level V: Expert Opinion.

Better outcomes using suture button compared to screw fixation in talofibular syndesmotic injuries of the ankle: a level I evidence-based meta-analysis

INTRODUCTION

The present meta-analysis evaluated current level I clinical trials which compared the use of a suture button (SB) versus syndesmotic screw (SS) fixation techniques for syndesmosis injuries of the ankle. The outcomes of interest were to compare patient-reported outcome measures (PROMs) and complications. It was hypothesised that SB might achieve better PROMs along with a lower rate of complications.

METHODS

This study was conducted according to the 2020 PRISMA statement. In August 2023, PubMed, Web of Science, Google Scholar, and Embase were accessed. All the randomised controlled trials (RCTs) which compared SB versus SS fixation for syndesmosis injuries of the ankle were accessed. Data concerning the American Orthopaedic Foot & Ankle Society (AOFAS), and Olerud-Molander score (OMS) were collected at baseline and at last follow-up. Data on implant failure, implant removal, and joint malreduction were also retrieved.

RESULTS

Data from seven RCTs (490 patients) were collected. 33% (161 of 490) were women. The mean length of the follow-up was 30.8 ± 27.4 months. The mean age of the patients was 41.1 ± 4.1 years. Between the two groups (SB and SS), comparability was found in the mean age, and men:women ratio. The SS group evidenced lower OMS (P = 0.0006) and lower AOFAS (P = 0.03). The SS group evidenced a greater rate of implant failure (P = 0.0003), implant removal (P = 0.0005), and malreduction (P = 0.04).

CONCLUSION

Suture button fixation might perform better than the syndesmotic screw fixation in syndesmotic injuries of the ankle.

Center-Center Surgical Technique With Dynamic Syndesmosis Fixation: A Cadaveric Pilot Study

The objective of this cadaveric biomechanical study was to evaluate if the center-center surgical technique is a reliable and repeatable method of achieving proper syndesmotic reduction when using dynamic syndesmotic fixation. Nine fresh frozen above-knee cadaveric lower extremities were used. Computerized tomography (CT) scans were first obtained for each intact specimen as the baseline for comparison. A simulated complete syndesmotic disruption was created by transection of all deltoid and syndesmotic ligaments. Instability of the ankle was confirmed with stress imaging using fluoroscopy. Each unstable specimen was repaired using the center-center surgical technique with dynamic syndesmosis fixation. A series of measurements from the axial CT images of intact and repaired specimens were used to determine the anatomic distal tibiofibular relationships for comparison of changes from intact to postfixation. All radiographic measurements were performed by 4 independent foot and ankle surgeons. The level of inter-rater reliability for all the measurements was found to be "moderate" to "excellent" agreement (ICC value: 0.865-0.983, 95% confidence interval: 0.634-0.996). There was no statistical difference found between rotational alignment of native and postfixation (a/b: p = .843; b-a: p = .125; θ: p = .062). There was a statistical difference detected for lateral alignment at the center of fibularis incisura between native and postfixation (average: -0.6 ± 0.8 mm, range: -2.3 to 1.2 mm, p < .001). There was no statistical difference found for the anteroposterior translation alignment between native and postfixation (d/e: p = .251; f: p = .377). This study demonstrated the use of the center-center surgical technique as a viable and repeatable method for achieving anatomical reduction of the tibiofibular syndesmosis when used with dynamic fixation modalities.

Systematic Review of Total Hip Arthroplasty Outcomes in Cerebral Palsy Patients and a Comparative Analysis with Rheumatoid Arthritis

Background

Total hip arthroplasty (THA) is considered a successful treatment option for patients with degenerative hip arthritis. However, in the setting of neuromuscular diseases, patients with cerebral palsy (CP) are considered high-risk due to instability, contractures, and altered muscle tone. The purpose of this systematic review is to analyse the data in the setting of THA in CP patients including indications, types of implants, revision rates, and patient-reported outcomes and compare these with those of a cohort requiring THA due to degenerative arthritis unrelated to neuromuscular disorders.

Methods

PubMed, Embase, and Cochrane Library were searched from inception until June 10, 2023, to identify the relevant studies for THA on CP patients. The methodological quality of the studies was evaluated using the Newcastle-Ottawa Quality Assessment Scale (NOS).

Results

The initial search generated 190 studies out of which 21 met the inclusion criteria. The most frequently reported indication was painful hip dislocation or subluxation due to failure of prior nonoperative treatment. The most frequently reported complication was dislocation affecting overall 7.5% (0-28%) of all patients, while other complications included periprosthetic fractures and heterotrophic ossification. The survival rates of primary THAs ranged from 85% to 100% at 5 years and from 73% to 86% at 10 years. Patients with CP who undergo total hip arthroplasty experience a greater overall rate of complications compared to patients with rheumatoid arthritis (RA) that undergo the same procedure.

Conclusion

The current literature suggests that THA is a beneficial procedure for patients with CP through pain reduction and functional improvement. However, the increased rates of potential complications compared to the general population require careful consideration. We suggest that further investigations on the most appropriate time of procedure, implant type, and procedure are needed.

A new type of elastic fixation, using an encircling and binding technique, for tibiofibular syndesmosis stabilization: comparison to traditional cortical screw fixation

BACKGROUND

The distal tibiofibular syndesmosis (DTS) is a complex fibrous joint that contributes to the stability and weight-bearing function of the ankle. As such, repair of DTS injury is required, providing fixation strength while maintaining ankle range of motion. The aim of this study was to compare a new elastic fixation technique, using an encircling and binding technique, for DTS stabilization, compared to the traditional cortical bone screw fixation.

METHODS

This was a retrospective analysis of 67 patients treated for a DTS injury at our hospital, between June 2019 and June 2021. Of them, 33 were treated with encircling and binding (EB group) and 34 using a cortical screw (CS group). The following outcomes were compared between groups: time to inferior tibiofibular fixation; length of hospital stay; time to partial weight bearing; time to complete weight bearing; complications; imaging data; and functional scores.

RESULTS

Successful stabilization was achieved in all cases, with a mean follow-up period of 15.78 ± 2.97 months. Time to fixation and time to partial and complete weight bearing were shorter for the EB than that for the CS group. The length of hospital was not different between groups. With regard to complications, a superficial infection developed in one patient in each group, with wound healing achieved after active treatment. Screw fracture occurred in two patients in the CS group. At 3 months post-surgery, the American Foot Surgery Association Ankle-Hindfoot score (AOFAS) was higher and the pain score lower for the EB than that for the CS group, but with no between-group difference at the final follow-up. On imaging, the tibiofibular clear space and tibiofibular overlap were not different between groups.

CONCLUSIONS

DTS fixation using encircling and binding yielded better clinical and functional outcomes than did cortical screw fixation at 3 months post-surgery, with no difference at the final follow-up. This novel fixation technique provides firm fixation, combined with earlier return to postoperative exercise and recovery of ankle function.

A New Method of Nice Knot Elastic Fixation for Distal Tibiofibular Syndesmosis Injury

OBJECTIVE

The distal tibiofibular syndesmosis (DTS) is a fretting joint and it is still a hot issue how to satisfy strong internal fixation while allowing fretting. This study described and evaluated a new method for elastic fixation of DTS injury with Nice Knot.

METHODS

The study was designed as a retrospective study. Between June 2020 and June 2021, 31 patients who were diagnosed with ankle fracture and DTS injury without additional orthopedic injuries were enrolled in this case series. The study included 22 males and nine females, with an average age of 34.71 ± 14.66 years. All patients were treated with Nice Knot binding for DTS. Surgical time, length of stay, time of DTS fixation, total weight-bearing time, complications, imaging parameters, and functional scores at follow-up were recorded. Paired sample t-tests or single factor analyses of variance were used at intra-group comparison.

RESULTS

All patients completed surgery with normal syndesmotic parameters. The recovery of DTS injury was verified by Hook and lateral malleolus rotation tests. The average follow-up time was 15.97 ± 3.30 months. Only one case showed superficial infection after surgery, and the wound healed after symptomatic treatment. In terms of imaging, there were no significant differences in tibiofibular clear space (TFCS), tibiofibular overlap distance (TFOS), medial clear space (MCS), and superior clear space (SCS) immediately and at different follow-up points after surgery. All obtained excellent and good outcomes according to the AOFAS score at least follow-up after surgery.

CONCLUSIONS

Nice Knot elastic fixation of DTS injury is firm and stable while maintaining the physiological micromotion of the ankle joint.

Management of Syndesmosis Injury: A Narrative Review

The syndesmosis is an important fibrous joint that plays a crucial role in normal ankle weight-bearing and movements. Syndesmosis injuries include disruption of one or more of the ligaments comprising the distal tibiofibular syndesmosis and are commonly associated with ankle fractures. The treatment of grade 1 syndesmosis injury should be conservative, such as immobilization for one to three weeks followed by gradual return to activity. For the treatment of grade 2 syndesmosis injury, if it was stable enough, the patients still could be managed with conservative therapies. But majority of them strongly favor surgical treatment. For the treatment of grade 3 syndesmosis injury, it should treat with surgical reconstruction. If syndesmosis injury is associated with ankle fractures, surgical reduction, fixation, and reconstruction are usually required. Common surgical treatment methods include syndesmosis screws, composed of either metallic or bioabsorbable material; fibula intramedullary nails; and dynamic button-suture fixation, TightRope or ZipTight. Each method has advantages and disadvantages which must be considered while determining which treatment will provide the best outcomes depending on the patient's needs. Continued exploration of new materials, devices, and methods for surgical fixation is necessary for advancement in this field.

Kirschner Wire as a Reference Marker for the Positioning of a Syndesmotic Screw: A Radiological Study and Clinical Evaluation

OBJECTIVE

No consensus has been reached regarding optimal implantation for a syndesmotic screw. Thus, we aimed to explore the feasibility of a reliable and static fibular incisura plane reference for ideal syndesmotic screw placement.

METHODS

A retrospective review of computed tomography (CT) scans of 42 uninjured adult ankles with foot fractures were analyzed to measure the tibiofibular vertical distance (TFVD) at 2.5 cm proximal to the plafond from August 2016 to June 2017 in our hospital. The patients (20 females, 22 males) were divided into four groups according to their TFVD: 0-1, 1-2, 2-3, and 3-4 mm, and patients in each group were counted. We retrospectively assessed 41 patients (15 females, 26 males) who underwent syndesmotic screw fixation for ankle fractures from December 2015 to June 2020. We performed t-testing of two independent samples to determine the differences in the angle between the anatomic axis of the syndesmosis and screw axis (AAS) and ankle function using the American Orthopaedic Foot and Ankle Society (AOFAS) score at 3 and 6 months postoperatively between the conventional (20 patients) and K-wire marker (21 patients) groups. The correlation between the AAS and AOFAS score was analyzed.

RESULTS

The TFVD measured 2.23 ± 1.01 mm at 2.5 cm proximal to the plafond, and occurred at 25% of the distance from 2 to 3 mm in 47.6% of the patients. This new technique decreased AAS deformation by 62%, from 13.01° ± 2.84° to 4.89° ± 2.43°, in the conventional group (p < 0.001). At 3 months postoperatively, the AOFAS scores of ankle function were similar in both groups, but it was significantly better in the new group than that of conventional group at the 6-month follow-up (p = 0.024). There was a moderate negative correlation between AAS and AOFAS score at 6 months postoperatively (R = -0.684). No obvious complications affecting ankle function were observed in either group postoperatively.

CONCLUSIONS

Surgeons can accurately place a screw trajectory using the fibular incisura plane as a reliable intraoperative reference. A 1.6-mm K-wire placed in the syndesmosis at 2.5 cm proximal to the tibial plafond could act as a static marker of the syndesmotic plane.

Evidence-Based Surgical Treatment Algorithm for Unstable Syndesmotic Injuries

Background: Surgical treatment of unstable syndesmotic injuries is not trivial, and there are no generally accepted treatment guidelines. The most common controversies regarding surgical treatment are related to screw fixation versus dynamic fixation, the use of reduction clamps, open versus closed reduction, and the role of the posterior malleolus and of the anterior inferior tibiofibular ligament (AITFL). Our aim was to draw important conclusions from the pertinent literature concerning surgical treatment of unstable syndesmotic injuries, to transform these conclusions into surgical principles supported by the literature, and finally to fuse these principles into an evidence-based surgical treatment algorithm. Methods: PubMed, Embase, Google Scholar, The Cochrane Database of Systematic Reviews, and the reference lists of systematic reviews of relevant studies dealing with the surgical treatment of unstable syndesmotic injuries were searched independently by two reviewers using specific terms and limits. Surgical principles supported by the literature were fused into an evidence-based surgical treatment algorithm. Results: A total of 171 articles were included for further considerations. Among them, 47 articles concerned syndesmotic screw fixation and 41 flexible dynamic fixations of the syndesmosis. Twenty-five studies compared screw fixation with dynamic fixations, and seven out of these comparisons were randomized controlled trials. Nineteen articles addressed the posterior malleolus, 14 the role of the AITFL, and eight the use of reduction clamps. Anatomic reduction is crucial to prevent posttraumatic osteoarthritis. Therefore, flexible dynamic stabilization techniques should be preferred whenever possible. An unstable AITFL should be repaired and augmented, as it represents an important stabilizer of external rotation of the distal fibula. Conclusions: The current literature provides sufficient arguments for the development of an evidence-based surgical treatment algorithm for unstable syndesmotic injuries.

Biomechanical comparison of screw, tightrope and novel double endobutton in the treatment of tibiofibular syndesmotic injuries

BACKGROUND

Adequate reduction and stabilization of the syndesmosis are significant to prevent early degeneration of the ankle joint and get better clinical outcomes. However, the routine surgical methods have diffierent limitations. The purpose of this study was to develop a novel double Endobutton fixation to treat the distal tibiofibular syndesmotic injuries, and determine whether the novel double Endobutton fixation demonstrates a better biomechanical property compare with the intact syndesmosis, the screw fixation and the Tightrope fixation.

METHODS

Twenty-four normal fresh-frozen ankle specimens with a mean age of 42 ± 8 (range, 28-62) years were randomly divided equally into four groups: (1) the intact group, (2) the screw group, (3) the Tightrope group, (4) the Endobutton group. 3D printer technology was used to establish the personalized distal tibiofibular syndesmotic navigation modules to determine the accurate bone tunnel. Axial loading was applied in five ankle positions: neutral position, dorsiflexion, plantar flexion, varus and valgus. Rotation torque was applied in two ankle rotation of the neutral position: internal and external.

RESULTS

In most situations, the displacements of the intact group were larger than the screw group, the Tightrope group and the Endobutton group (P < .05), and the displacements of the screw group were smaller than other three groups (P < .05). The displacements of the double Endobutton group were slightly larger than the Tightrope group but no significant differences were found between these two groups except in the dorsiflexion position of axial loading experiments (P < .05). The novel double Endobutton fixation was steadier than intact syndesmosis and more micromotional than screw fixation.

CONCLUSION

Our study demonstrated that the novel double Endobutton can be considered as the better fixation in treatment of distal tibiofibular syndesmotic injuries.

LEVEL OF EVIDENCE

Level III, retrospective comparative study.

Comparison of Outcomes Between Suture Button Technique and Screw Fixation Technique in Patients With Acute Syndesmotic Diastasis: A Meta-analysis of Randomized Controlled Trials

Background:

Our aim was to compare the outcome between suture button (SB) stabilization and syndesmotic screw fixation (SF) in patients with acute syndesmotic diastasis.

Methods:

A systematic literature search up to June 30, 2021, was performed to identify randomized controlled trials (RCTs) comparing outcomes of SB with SF techniques in patients with acute syndesmotic diastasis. We calculated mean differences for continuous outcomes, using the Hartung-Knapp-Sidik-Jonkman method, and odds ratio for dichotomous outcomes, using the Mantel-Haenszel method.

Results:

Eight RCTs involving 569 patients met the inclusion criteria, 1 RCT with level I evidence, and 7 RCTs with level II evidence. The meta-analysis showed that the SB technique had a higher AOFAS score <6 months and 12 months postoperatively (MD = 4.74, 95% CI 1.68-7.80, P = .01; and MD = 5.42, 95% CI 1.50-9.33, P = .02) and reduced the risk of implant irritation (OR = 0.31, 95% CI 0.11-0.89, P = .03), implant failure (OR = 0.06, 95% CI 0.02-0.23, P < .01), and reoperation (OR = 0.43, 95% CI 0.22-0.83, P = .01). The 2 approaches did not differ in further functional outcomes or postoperative complications.

Conclusion:

Because functional outcomes showed no relevant difference between both SB and SF, the advantage of SB appears to be in the lower risk for postoperative complications. The SB technique led to fewer cases of implant irritation, implant failure, and reoperation compared with SF.

Level of Evidence:

Level I, meta-analysis of RCTs.

Comparison of Suture-Button Versus Syndesmotic Screw in the Treatment of Distal Tibiofibular Syndesmosis Injury: A Meta-analysis

Traditionally screw fixation is an effective surgical procedure for the treatment of unstable syndesmosis injuries. However, it is still a controversy whether suture-button (SB) device can achieve better clinical outcomes and decrease the risk of complications compared with syndesmotic screw (SS). The present meta-analysis was conducted to figure out whether SB fixation was superior to traditionally screw fixation. Twelve clinical studies were identified, involving 320 patients in the SB group and 334 patients in the SS group. Among patients treated with SB, the American Orthopaedic Foot & Ankle Society (AOFAS) score was significantly higher at 3-month follow-up (p = .01) and 2-year follow-up (p = .02), and the Olerud-Molander Ankle (OMA) score at 1-year follow-up (p = .002). In addition, the SB group had significantly better results in the malreduction (p = .0008), implant failure (p < .01), implant removal (p < .01), and local irritation (p = .004). No statistical differences were found in the AOFAS at 6 months follow-up (p = .33) and 1-year follow-up (p = .33), OMA at 3 months follow-up (p = .09), 6 months follow-up (p = .14) and 2 years follow-up (p = .36), the Foot and Ankle Disability Index (p = .73), Euro Qol 5-dimension questionnaire (p = .33), dorsiflexion (DF; p = .91), plantarflexion (p = .23), medial clear space (p = .42), tibiofibular clear space (p = .60), tibiofibular overlap (p = .84), and other complications (p = .95). Based on this meta-analysis, there was no significant difference in postoperative radiological measurements, and no sufficient evidence was found to support the improved clinical outcomes compared with SS fixation group. However, SB technique could improve functional outcomes, reduce the rate of implant removal, implant failure, local irritation, and malreduction without increasing risk of other complications. Therefore, the SB technique should be recommended in the treatment of syndesmosis injuries.

Comparison of tendon suture fixation and cortical screw fixation for treatment of distal tibiofibular syndesmosis injury: A case-control study

This study aimed to investigate the effectiveness of tendon suture fixation versus cortical screw fixation for the treatment of distal tibiofibular syndesmosis injury.This study recruited 42 patients with Danis-Weber type B, C1 and C2 fractures concomitant with lower tibiofibular syndesmosis injury, who were randomly assigned to 2 groups according to treatment with cortical screw fixation (n = 21) and tendon suture fixation (n = 21). Operation time, intraoperative blood loss, time to full weight-bearing activity, medical cost, ankle function, and ankle pain were compared between the 2 groups.The operation time was significantly less with cortical screw fixation (57.1 ± 5.3 min) than with tendon suture fixation (63.3 ± 6.3 min; p = 0.01), but there was no significant difference in intraoperative blood loss. The time until full weight-bearing was possible was significantly longer after cortical screw fixation (10.9 ± 2.7 weeks) than after tendon suture fixation (7.1 ± 1.9 weeks; P < .001). The medical cost was much greater for cortical screw fixation (1861.6 ± 187.3 USD) than for tendon suture fixation (1209.6 ± 97.6 USD; P < .01). The rate of excellent and good ankle function at 3 months after surgery was significantly higher with tendon suture fixation (71.4%) than with cortical screw fixation (33.3%; P = .03).Tendon suture fixation is associated with quicker recovery of ankle function, shorter time to full weight-bearing, and lower medical cost to the patient compared with screw fixation. Our findings suggest that tendon suture fixation is an effective method for the treatment of tibiofibular syndesmosis injury.