Sinus tarsi approach versus extensile lateral approach for displaced intra-articular calcaneal fracture: a meta-analysis of current evidence base

Postoperative complications after displaced intra-articular calcaneal fracture operations

BACKGROUND

The objective was to compare postoperative complications in the management of displaced intra articular calcaneal fractures (DIACF) between two groups; the open reduction and internal fixation (ORIF) group versus the percutaneous fixation (PF) group.

METHODS

A total of 243 DIACFs were diagnosed and 127 of them received operations either with ORIF 75 (59.1 %) or PF 52 (40.9 %) between 2004 and 2018. Postoperative complications, radiological Sanders's classification and improvement of Böhler's angle were analyzed.

RESULTS

Early complication rate (<6 weeks), rate of deep wound infections and wound edge necrosis were significantly better in PF than in ORIF patient group. There were no significant differences in late complications (>6 weeks from operation) nor in improvement of Böhler's angle.

CONCLUSION

Complication rate is lower when using PF technique while fracture reduction remains the same compared to the ORIF.

LEVEL OF EVIDENCE

IV retrospective cohort study at a single institution.

Postoperative wound complications in extensile lateral approach versus sinus tarsi approach for calcaneal fractures: Are we improving? Updated meta-analysis of recent literature

INTRODUCTION

To analyze recent literature comparing clinical outcomes of displaced intra-articular calcaneal fractures (DIACF) treated with open reduction and internal fixation using the extensile lateral approach (ELA) vs the minimally invasive sinus tarsi approach (STA), with a focus on wound complications.

MATERIALS AND METHODS

A comprehensive literature search was conducted utilizing PubMed, EMBASE, and Cochrane Library databases following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Studies published between 2013 and 2022, level of evidence (LOE) I-III, head-to-head comparative studies reporting on clinical outcomes after DIACFs treated with ORIF using ELA versus STA, and literature with full-text written in English were included. Data collection included: publication year, study design, number of surgeons, number of participants, demographic data (mean age at time of surgery, percent male, body mass index, medical co-morbidities), preoperative data (mechanism of injury, Sanders classification, time from injury to surgical fixation), intraoperative data, and postoperative clinical and radiographic outcomes (Böhler angle, angle of Gissane, calcaneal height/length/width).

RESULTS

A total of 21 articles (4 randomized control trials, 17 cohort studies) comprising of 2086 patients with calcaneal fractures, treated with either ELA (n = 1129) or STA (n = 957) met inclusion criteria. The risk of postoperative wound-related complications (RR 2.82, 95 % CI: 2.00-3.98, I2=27 %) and the risk of reoperation (RR 1.85, 95 % CI: 0.69-5.00, I2=67 %) was higher in ELA patients comparted to STA patients. However, the increased risk of postoperative wound-related complications with an ELA vs. STA was shown to be trending downward in recent publications. The ELA group also experienced longer time to surgery, extended operative times, and prolonged hospital stays when compared to the STA group. Radiographic measurements at final follow-up, including Böhler angle, angle of Gissane, as well as calcaneal height, length, and width, showed no statistically significant differences between the two groups.

CONCLUSION

Surgical treatment of calcaneal fractures utilizing the ELA continues to have an increased rate of complications and reoperation when compared to the less invasive STA, yet recent trends in the literature show that this rate is decreasing. Operative treatment of calcaneal fractures via either an ELA or STA can both achieve comparable postoperative radiographic outcomes.

LEVEL OF EVIDENCE

Therapeutic Level III.

Comparison of sinus tarsi approach versus extensile lateral approach in the management of displaced intra-articular calcaneal fractures: A single-center study

BACKGROUND

Controversy still exists for optimal treatment for displaced intra-articular calcaneal fractures (DIACFs). Conven-tionally, the extensile lateral approach (ELA) has been the most preferred approach. Although ELA provides excellent fracture access and direct evaluation of the depressed posterior facet, this approach has a high rate of serious complications, such as hematoma, superficial/deep infection, and wound healing issues. To overcome such complications, more minimally invasive techniques including external fixation, percutaneous fixation, arthroscopic assisted fixation, and sinus tarsi approach (STA) have been recently described. The primary aim of this study was to compare STA and LEA in the treatment of DIACFs.

METHODS

Patients who were operated for DIACFs in our clinic were included in the study. Patients with closed DIACFs of Sanders Type II, III, IV, and over 18 years of age were identified. Physical examinations and radiological evaluations of the patients were per-formed, and clinical scores were filled. Patients were divided into subgroups according to the Sander's classification and comparisons were made again according to these subgroups.

RESULTS

There were 37 patients (four female and 33 male) in STA group and 44 patients in LEA group (six female and 38 male). The mean age was 44.42±13.57 years (range, 18-61) for STA group and 37.32±11.09 years (range, 18-56) for the LEA group. In clinical outcomes, except for short-form survey (SF-12)/MCS-12 (Mental Score) and visual analog scale score, all the parameters were signifi-cantly better in STA group compared to LEA group. No significant difference was observed between the two groups in radiographic results, except for the Böhler angle. Significantly less infection occurred in the STA group compared to LEA group (P=0.021). According to Sander's classification, American Orthopedic Foot and Ankle Society, foot and ankle disability index, and SF-12/PCS-12 and foot function index scores, no significant differences were determined between STA and LEA groups for Sanders Type 2, whereas the values were considerably higher in STA group than in LEA group for Sanders Type 3 and 4.

CONCLUSION

In DIACFs, STA is considered a safe and effective method for restoring the width, height, and length of the calca-neus and reconstruction of joint alignment and has now become our standard technique for all calcaneal fractures requiring operative treatment.

Implant Choice and Outcomes of the Sinus Tarsi Approach for Displaced Intra-articular Calcaneal Fractures

BACKGROUND

Operative fixation of displaced intra-articular calcaneal fractures is considered the gold standard, for which multiple fixation methods are available. This study compares the (functional) outcome of screw fixation (SF), plate fixation (PF), and anatomical plate fixation (APF) via the sinus tarsi approach (STA).

METHODS

A total of 239 patients (265 fractured calcanei) who received surgical treatment of a displaced intra-articular calcaneal fracture via STA between 2011 and 2022 were included.

RESULTS

Böhler angle (BA) measured immediately postoperatively (BA post-OR) and the decrease in BA at 1 year (∆BA) differed significantly in favor of PF/APF compared with SF (BA post-OR: SF vs PF P = .010 and SF vs APF P = .001; ∆BA: SF vs PF P = .032 and SF vs APF P = .042). Implant removal surgery was performed significantly less in the APF group as compared to the SF/PF groups (APF vs SF/PF; 9.9% vs 22.9%/23.7%, P = .015). Surgical site infections and secondary arthrodesis of the subtalar joint occurred equally in the 3 groups. Furthermore, the mean American Orthopaedic Foot & Ankle Society ankle-hindfoot scale, Foot Function Index score, and EuroQOL-5D-index / visual analog scale score, did not differ notably between SF, PF, and APF.

CONCLUSION

The results show that both PF and APF are favored over SF because of an improved correction of BA measured directly postoperatively, a lower secondary loss of BA and, for APF, a lower implant removal rate. There was no difference in the rate of surgical site infections, need for secondary arthrodesis, nor functional outcome scores between different implants using the STA.

LEVEL OF EVIDENCE

Level III, retrospective cohort study.

Does the postoperative quality of reduction, regardless of the surgical method used in treating a calcaneal fracture, influence patients' functional outcomes?

BACKGROUND

The extensile lateral approach (ELA) and sinus tarsi approach (STA) are commonly utilized for surgically treating calcaneal fractures. This study compared the outcomes of ELA and STA in the management of calcaneal fractures and assessed the influence of postoperative quality of reduction on functional and pain scores.

METHODS

The study included 68 adults with Sanders type-II and type-III calcaneal fractures who underwent either ELA or STA surgery. Pre- and postoperative radiographs and computed tomography scans were analyzed, and functional and pain scores were evaluated using the Manchester Oxford Foot Questionnaire (MOXFQ), American Orthopedic Foot and Ankle Society (AOFAS) ankle-hindfoot score, and Visual Analogue Score (VAS) during follow-up visits.

RESULTS

Out of the total patients, 50 underwent ELA surgery while 18 underwent STA surgery. The anatomic (excellent) reduction was achieved in 33 (48.5%) patients. There were no significant differences between the ELA and STA groups concerning functional scores, pain scores, the proportion of excellent reduction, and complications. Additionally, anatomic reduction, compared to near or non-anatomic (good, fair, or poor) reduction, demonstrated a decrease in MOXFQ (unstandardized β coefficient: -13.83, 95% CI: -25.47 to -2.19, p = 0.021), an increase in AOFAS (unstandardized β coefficient: 8.35, 95% CI: 0.31 to 16.38, p = 0.042), and a reduction in VAS pain (unstandardized β coefficient: -0.89, 95% CI: -1.93 to -0.16, p = 0.095) scores.

CONCLUSION

In conclusion, we found no significant differences regarding complications, excellent reduction, and functional scores between STA and ELA surgeries. Therefore, STA may be an effective alternative for the treatment of calcaneal fractures in Sanders type II and type III calcaneal fractures. Furthermore, the anatomic reduction of the posterior facet correlated with improved functional scores, emphasizing the importance of achieving it for restoring foot function regardless of surgery type or time between injury and surgery.

Comparison of clinical and radiological outcomes between extended lateral and sinus tarsi approach in the surgical treatment of displaced intraarticular calcaneal fractures surgery

Purpose: The aim of this stud was to compare the clinical and radiological results between Sinus-tarsi (ST) and Extended-Lateral (EL) approaches in open reduction internal fixation of intra-articular calcaneal fractures. Materials and Methods: 51 calcaneal fractures of 48 patients surgically treated between 2012 and 2017 were retrospectively analyzed. The patients were divided into two groups. Preoperative CT, early postoperative and postoperative 1st-year radiographs, and The American Orthopedic Foot and Ankle Society (AOFAS) Ankle-Hindfoot Score scores were evaluated. Results: According to the Sanders classification, nine patients in the EL group were type 2(36%), 16 patients type 3 (64%), 8 patients in ST group type 234.8%), 13 patients (56.5%) type 3, 2 patients (8.7%) type 4. The mean AOFAS-Hindfoot score was 85(63-100) in the ST group and 83(52-93) in the LE group at one year. Mean preoperative waiting time was shorter, with an average of 2(1-4) days in ST and 6(3-12) days in LE. Conclusion: ST approach shortens the preoperative waiting time in intra-articular calcaneal fracture surgery, provides a sufficient vision for anatomical restoration, and effectively avoids complications.

Sinus tarsi approach in high-risk patients with displaced intra-articular calcaneus fractures: A case series

Purpose

Though research exists regarding calcaneal fractures, the treatment approach for displaced intra-articular calcaneal fractures (DIACF) remains controversial. The most common approach, the extensile lateral approach (ELA), for the treatment of DIACFs has high rates of wound complications reported. In contrast, the sinus tarsi approach (STA) is becoming more popular due to its minimally invasive technique. The objective of this retrospective study is to investigate the incidence of wound complications in high-risk patients with DIACF following operative fixation via the STA.

Methods

Following IRB approval, a retrospective chart review was performed between 2007 and 2013 to assess high-risk patients for the presence of wound complications, including deep infections and delayed wound healing, following the use of STA for the management of DIACF's (n = 36). Demographics, risk factors, and secondary outcomes such as time to surgery were recorded.

Results

Of the 36 high-risk patients included in our study, seven had post-operative complications following operative fixation via the STA. Specifically, four patients had delayed wound healing, and three developed deep infections. Time to surgery had the greatest negative effect on postoperative complications and was influenced by age, sex, and the presence of a concomitant injury.

Conclusion

In conclusion, this study demonstrates that the STA is a viable option for high-risk patients with displaced intra-articular fractures. Additionally, time to surgery should be minimized, when possible, to reduce risks of post-operative complications, including infections and delayed wound healing.

Modified sinus tarsi approach with a variable-angle locking anterolateral plate for Sanders type II and III calcaneal fractures

BACKGROUND

We compared the effectiveness of the extensile lateral approach (ELA) and modified sinus tarsi approach (MSTA) with a variable-angle locking anterolateral plate in treating Sanders type II and III calcaneal fractures.

METHODS

We reviewed 45 DIACFs treated by a single surgeon from 2017 to 2020. Open reduction using ELA and MSTA was performed in 25 and 20 patients, respectively. Follow-up evaluations included radiological assessments and clinical evaluations.

RESULTS

Pre- and postoperative radiologic parameters for the calcaneus were significantly different. The average American Orthopaedic Foot and Ankle Society scores were 81.24 and 85.00, the mean visual analogue scale scores were 2.28 and 1.65, and the wound-related complication rates were 64.0% and 15.0% in the ELA and MSTA groups, respectively. Bony union was achieved in all cases.

CONCLUSIONS

For Sanders type II and III fractures, MSTA seems to be a safer and more satisfactory method, with fewer postoperative complications.

Development of a nomogram to predict surgical site infection after closed comminuted calcaneal fracture

Background

Compared with open comminuted calcaneal fractures, less emphasis is placed on postoperative surgical site infection (SSI) of closed comminuted calcaneal fractures. This study aimed to identify the risk factors associated with SSI and build a nomogram model to visualize the risk factors for postoperative SSI.

Methods

We retrospectively collected patients with closed comminuted calcaneal fractures from the Second Affiliated Hospital of Wenzhou Medical University database from 2017 to 2020. Risk factors were identified by logistics regression analysis, and the predictive value of risk factors was evaluated by ROC (receiver operating characteristic curve). Besides, the final risk factors were incorporated into R4.1.2 software to establish a visual nomogram prediction model.

Results

The high-fall injury, operative time, prealbumin, aspartate aminotransferase (AST), and cystatin-C were independent predictors of SSI in calcaneal fracture patients, with OR values of 5.565 (95%CI 2.220–13.951), 1.044 (95%CI 1.023–1.064), 0.988 (95%CI 0.980–0.995), 1.035 (95%CI 1.004–1.067) and 0.010 (95%CI 0.001–0.185) (P_s < 0.05). Furthermore, ROC curve analysis showed that the AUC values of high-fall injury, operation time, prealbumin, AST, cystatin-C, and their composite indicator for predicting SSI were 0.680 (95%CI 0.593–0.766), 0.756 (95%CI 0.672–939), 0.331 (95%CI 0.243–0.419), 0.605 (95%CI 0.512–0.698), 0.319 (95%CI 0.226–0.413) and 0.860 (95%CI 0.794–0.926), respectively (P_s < 0.05). Moreover, the accuracy of the nomogram to predict SSI risk was 0.860.

Conclusions

Our study findings suggest that clinicians should pay more attention to the preoperative prealbumin, AST, cystatin C, high-fall injury, and operative time for patients with closed comminuting calcaneal fractures to avoid the occurrence of postoperative SSI. Furthermore, our established nomogram to assess the risk of SSI in calcaneal fracture patients yielded good accuracy and can assist clinicians in taking appropriate measures to prevent SSI.

Exposure of the Calcaneus in the Sinus Tarsi Approach Versus the Lateral Extensile Approach: A Cadaveric Study

BACKGROUND

The lateral extensile approach (LEA) is an operative approach for calcaneal fractures. High rates of wound complications have led to alternative approaches such as the sinus tarsi approach to grow in popularity. The LEA affords substantial visualization of the calcaneus. This visualization has never been compared in a quantitative manner with the sinus tarsi approach (STA). We aim to quantify the calcaneal visualization afforded by STA and LEA.

METHODS

Seven pair-matched, fresh-frozen, below-knee cadaver extremities were included. For each pair, one side received an LEA and the other side received an STA.

RESULTS

There were no statistically significant differences in the articular surfaces accessible between the 2 approaches. The total calcaneal surface area accessible was 3107.08 mm2 for LEA and 1444.19 mm2 for STA (P = .02). The LEA allowed better exposure to the lateral wall (P = .01) and the dorsal tuberosity of the calcaneus (P = .04).

CONCLUSION

The STA allows for equivalent articular surface exposure when compared with the LEA. Although LEA allows for greater exposure of the lateral wall and dorsal tuberosity, direct visualization of these structures may not warrant the higher risk of wound complications. Surgeons should consider these differences when choosing an operative approach in the treatment of calcaneal fractures.

Level III.

Complication Rates Are Similar Between Patients Aged <50 and >50 Years in Calcaneus Fractures Treated With the Sinus Tarsi Approach

Background:

The sinus tarsi (ST) approach for calcaneus fractures has gained popularity in recent years with an increased interest in shifting to less invasive approaches for calcaneal fracture fixation allowing for adequate fixation if complications do not arise. Although the ST approach has gained acceptance as standard for calcaneus fracture fixation, the literature surrounding early complications rates based on age differences for this specific approach and pathology is lacking. The objective of this study was to determine if rates of complications based on age varied for patients undergoing open reduction and internal fixation (ORIF) of closed calcaneus fractures using the ST approach.

Methods:

A retrospective review of patients undergoing ORIF for closed calcaneus fractures from 2012 to 2020 was performed. Inclusion criteria were based on an age greater than 18 years, surgical management of a closed calcaneus fracture using a ST approach, requirement of a preoperative computed tomographic scan, and a minimum of 180 days’ follow-up. Patients were divided into 2 groups: those aged <50 years and those aged >50 years.

Results:

A total of 196 fractures were included with 114 fractures in the <50-year age group and 82 fractures in the >50-year age group. Mean age was 34.2 and 59.7 years in the younger and older groups, respectively. The older group had similar rates of wound dehiscence (1.2% vs 4.4%, P = .204), superficial surgical site infection (1.2% vs 2.6%, P = .490), deep infection (9.8% vs 7.9%, P = .648), and nonunion (4.9% vs 3.5%, P = .633) compared with the younger group. Rates of 30-day readmission, unplanned reoperation, and symptomatic hardware were not significantly different. Postoperative Bohler and Gissane angles were not significantly different between both groups.

Conclusion:

Older patients with intraarticular calcaneus fractures treated via the ST approach maintain complication rates similar to those in younger individuals.

Level of Evidence:

Level III, retrospective study.

Comparison of the Curative Effect of Percutaneous Reduction with Plastic Calcaneal Forceps Combined with Medial External Fixation in the Treatment of Intra-Articular Calcaneal Fractures

Objective

To compare the clinical efficacy of percutaneous minimally invasive reduction combined with external fixation and a tarsal sinus approach to treat Sanders type II and III intra‐articular calcaneal fractures.

Methods

The clinical data of 64 patients with Sanders type II and III calcaneal fractures admitted to our hospital from January 2010 to January 2016 were retrospectively analyzed; data includedage, sex, body mass index. According to the surgical method, they were divided into the percutaneous minimally invasive reduction with internal and external fixation group (30 cases) and the tarsal sinus approach group (34 cases).The two groups of patients were compared in terms of the time tosurgery, length of hospital stay, intraoperative blood loss, operative duration, complications, radiographic features, including the heel bone length, width, height, Bohlerangle, Gissane angle, and calcaneal varus angle, and clinical efficacy indicators, including the American Orthopedic Foot and Ankle Society (AOFAS) score, the visual analog scale (VAS) pain score, health survey profile (SF‐36) score and Maryland ankle function score.

Results

Patients in both groups were followed up for 12 to 50 months, with an average of 24.8 months.Bony union was achieved in all cases. The time to surgery, length of hospitalstay, intraoperative blood loss and incidence of incision‐related complications were significantly lower in the percutaneous minimally invasive medial external fixation group than in the tarsal sinus group (P < 0.01). At the last follow‐up, the calcaneal length, width, and height, Bohler angle, Gissane angle, and varus angle were significantly increased in both groups (P < 0.01), the calcaneal width was significantly lower after than before surgery (P < 0.01), and there were no statistically significant differences between the two groups (P > 0.05). As measures of clinical efficacy, the AOFAS, VAS, SF‐36 and Maryland scores were 85.28 ± 8.21, 0.84 ± 1.21, 82.95 ± 3.25 and 83.56 ± 3.32, respectively, at the last follow‐up in the percutaneous minimally invasive medial external fixation group and 83.32 ± 7.69, 1.85 ± 1.32, 80.71 ± 5.42, and 81.85 ± 2.41 in the tarsal sinus group, respectively, with no significant differences between the two groups (P > 0.05).

Conclusion

Under the condition of a good command of surgical indications and surgical skills, the use of plastic calcaneal forceps for percutaneous minimally invasive reduction combined with medial external fixation for the treatment of Sanders type II and III intra‐articular calcaneal fractures can achieve similar clinical effects as the tarsal sinus approach. However, the use of plastic calcaneal forceps for percutaneous minimally invasive reduction combined with internal and external fixation has advantages, such as fewer complications, less bloodloss, and a shorter operation, and thus has good safety and is worthy of clinical promotion.

Extensile lateral versus sinus tarsi approach for calcaneal fractures: A meta-analysis

BACKGROUND

Calcaneal fractures are the most common tarsal bone fracture, and are often accompanied by heel pain, local swelling, tenderness, and inability to walk or stand. Surgical intervention results in better reconstruction of the calcaneal anatomy and reduces future complications; however, the optimal incision approach is still controversial. The incision is exposed better with extensile lateral approach (ELA), while the sinus tarsi approach (STA) causes fewer complications. The purpose of this meta-analysis is to compare the outcomes of STA and ELA.

MATERIALS AND METHODS

Published trials comparing ELA and STA in calcaneal fractures were included in our analysis. The quality of each study was assessed using the revised Jadad scale and the Newcastle-Ottawa scale. Two researchers (CP and BY) independently extracted data from all selected studies. Fixed- or random-effects models with mean differences and odds ratios were used to pool the continuous and dichotomous variables to determine the heterogeneity of the included studies.

RESULTS

Calcaneal height and calcaneal width had high heterogeneity. Results showed that the incidence of incision complications in STA was lower than that in ELA (P < .001). There was high heterogeneity in operative time (I2 = 97%), length of hospital stay (I2 = 98%), Böhler angle (I2 = 80%), Gissane angle (I2 = 98%), and American Orthopaedic Foot & Ankle Society scores (I2 = 73%). No source of heterogeneity was found by sensitivity analysis, subgroup analysis, or regression analysis, and the random-effects model was used. STA operative time was significantly shorter than ELA (P < .001). Length of hospital stay after STA was significantly shorter than after ELA (P = .002). There was no statistical difference in the Böhler and Gissane angles between STA and ELA. Postoperative American Orthopaedic Foot & Ankle Society scores after STA were higher than after ELA (P = .01).

CONCLUSIONS

Results show that, compared with ELA, STA is superior for treating calcaneal fractures due to anatomical reduction of the calcaneus, reduction of incision complications incidence, and shortened operative time and postoperative stay.

Comparison of 5 Treatment Approaches for Displaced Intra-articular Calcaneal Fractures: A Systematic Review and Bayesian Network Meta-Analysis

The choice of the best treatment method for displaced intra-articular calcaneal fractures (DIACFs) remains controversial. Using a network meta-analysis, this study aims to evaluate the radiographic characteristics, clinical effectiveness, and incision complications of nonoperative treatment, open reduction and internal fixation, minimally invasive reduction, and fixation. The studies were abstracted from Medline, Embase, Google Scholar, and the Cochrane Central Register of Controlled Trials. Randomized controlled trials (RCTs) meeting the inclusion and exclusion criteria were selected. Statistical analyses were conducted using Stata software. Seventeen RCTs involving 1297 participants with 1354 fractures were included. A total of 5 treatments-extensile lateral approach (ELA), minimally invasive longitudinal approach (MILA), sinus tarsi approach (STA), percutaneous reduction and fixation (PRF), and nonoperative treatment-were analyzed. The treatments were ranked based on Surface Under the Cumulative Ranking Curve (SUCRA) probability. In terms of recovery of Böhler's angle, the treatments were ranked as follows: MILA (75.3%), PRF (68.3%), ELA (54.7%), STA (51.6%), and nonoperative (0%). In terms of Böhler's angle after treatment, the treatments were ranked as follows: PRF (65.3%), ELA (64.0%), STA (63.5%), MILA (56.9%), and nonoperative (0.2%). In terms of American Orthopaedic Foot & Ankle Society score, the treatments were ranked as follows: PRF (87.0%), MILA (52.9%), STA (46.6%), ELA (40.4%), and nonoperative (23.1%). In terms of excellent and good satisfaction ratings, the treatments were ranked as follows: STA (96.2%), ELA (66.8%), PRF (34.9%), and nonoperative (2%). In terms of incision complications, the treatments were ranked as follows: PRF (84.1%), MILA (80.0%), STA (35.8%), and ELA (0.1%). Given the good results of the minimally invasive approach in terms of radiographic characteristics, clinical effectiveness and incision complications, the minimally invasive approach is a good alternative for DIACFs. More randomized controlled trials focused on DIACFs are needed to further examine this conclusion.

Evaluating Short-Term Outcomes Post-Intra-Articular Calcaneal Fracture Fixation via a Sinus Tarsi Approach in a Non-Exclusively Selected Cohort

Management of intra-articular calcaneal fractures remains a debated topic in orthopedics, with operative fixation often held in reserve due to concerns regarding perioperative morbidity and potential complications. The purpose of this study was to identify the characteristics of patients who developed surgical complications to inform the future stratification of patients best suited to operative treatment for intra-articular calcaneal fractures. All patients who underwent open reduction and internal fixation of calcaneal fractures utilizing the Sinus Tarsi approach between March 2014 and July 2018 were identified using theatre records. Patient imaging was used to assess pre- and postoperative fracture geometry with computed tomography used for preoperative planning. Each patient's clinical presentation was established through retrospective analysis of medical records. Patients provided verbal consent to participation and patient reported outcome measures were recorded using the Maryland Foot Score. Fifty-eight intra-articular calcaneal fractures (53 patients; 5 bilateral, mean age = 46.91 years) with a mean follow-up of 35.4 months (6-57) were included. Five patients (9.4%) had wound complications; 2 superficial (3.7%), 3 deep (5.6%); 4 of whom were smokers. Smokers were statistically more likely to have wound infections than nonsmokers (p = .04). Intra-articular fractures of the calcaneus should be considered for surgical intervention in order to improve long-term functional outcomes. The Sinus Tarsi approach provides the potential to decrease the operative complication rate whilst maintaining adequate fixation, however, the decision to surgically manage these fractures should be carefully balanced against the risk of postoperative complications. This increased risk of complication associated with smoking may tip the balance against benefit from surgical management.

Acute Fixation of Displaced Intra-articular Calcaneus Fractures Is Safe Using the Sinus Tarsi Approach

OBJECTIVE

To analyze the correlation between surgical timing and outcomes for calcaneus fractures treated using a sinus tarsi approach (STA).

SETTING

Single Level-1 trauma center.

DESIGN

Retrospective.

PATIENTS/PARTICIPANTS

Seventy consecutive intra-articular calcaneus fractures (OTA/AO 82C; Sanders II-IV) treated operatively using STA with a minimum of 1-year follow-up.

INTERVENTION

Open management using STA.

MAIN OUTCOME MEASUREMENT

Surgery timing, wound complications, American Orthopaedic Foot and Ankle Society ankle and hindfoot and Patient-reported Outcomes Measurement System scores.

RESULTS

Patients were primarily men (68.6%) averaging 46 years (range, 18-77 years). Nineteen (27%) were obese, 27 (38.6%) were smokers, and 3 (4.3%) were diabetic, and 10 (14.3%) had open fractures. Sanders III fracture patterns were most common (45.7%). Mean time to surgery was 4.9 days (range, 0-23 days). Three patients (4.2%) developed postoperative infections requiring surgical debridement and antibiotics. Forty patients (57%) underwent operative repair within 72 hours of injury, 9 (22.5%) of which had open fractures. Of this group, only one patient developed wound necrosis. Restoration of Bohler angle and angle of Gissane and reductions in calcaneal varus angle and heel width were achieved (all P < 0.001). No differences in Ankle Society ankle and hindfoot or Patient-reported Outcomes Measurement System scores were noted between patients treated within or beyond 72 hours from injury.

CONCLUSION

Intra-articular calcaneus fractures can be treated acutely within 72 hours of injury using STA with minimal wound complications and without compromising short-term functional outcome.

LEVEL OF EVIDENCE

Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Comparison of sinus tarsi approach and extensile lateral approach for calcaneal fractures: A systematic review of overlapping meta-analyses

PURPOSE

Accumulated literature has reported the comparative efficacy of the sinus tarsi approach (STA) and the extensile lateral approach (ELA) for the treatment of calcaneal fractures (CFs). However, the best alternative treatment for CF is still inconsistent. Herein, the present systematic review of overlapping meta-analyses aims to achieve an evident conclusion by performing a comprehensive reanalysis of previous meta-analyses regarding the comparison of the STA and the ELA.

METHODS

We searched several databases, including Pubmed, Medline, Embase, the Cochrane Library, SpringerLink, Clinical Trials.gov , OVID, and CNKI for the meta-analyses comparing the STA and the ELA for the treatment of CF. All related meta-analyses of randomized controlled trials and cohort studies were included. Two researchers independently assessed the quality of the articles and extracted the data. The Jadad decision algorithm was used to evaluate the evidence of the articles.

RESULTS

Ultimately, five meta-analyses were included in the present study. The Assessment of Multiple Systematic Reviews scores of these articles ranged from 5 to 9 with a median of 7. The analysis of best quality, Bai 2018, was selected based on the Jadad algorithm. In this article, the significant differences were found in wound complications and operating time, recovery of Böhler's angle, the American Orthopaedic Foot and Ankle Society scores, and the visual analog scale.

CONCLUSION

The clinical relevance of the present study is that both the STA and the ELA are effective in alleviating pain and improving functionality in the treatment of CF. However, due to a shorter operation duration and lower complication rates, the STA was indicated to be a superior alternative for CF treatment.

The influence of smoking on foot and ankle surgery: a review of the literature

The effect of tobacco smoking on foot and ankle procedures is likely to be more pronounced when compared to other orthopaedic surgery. This is due to the peripheral nature of the vasculature involved. This paper reviews the current clinical evidence on the effects of smoking foot and ankle surgery. In the trauma setting, the evidence suggests that wound complications and non-unions are significantly higher in the smoking population. In the elective setting there is a significantly increased risk of non-union in ankle and hindfoot arthrodeses in smokers. In the setting of diabetes, ulceration rate in smokers is higher and there may be a higher risk of amputation.

Could percutaneous fixation with crossed Schanz pins be an alternative to open reduction in the treatment of intra-articular calcaneal fractures?

PURPOSE

Despite modern operative techniques and a considerable number of studies in the literature, the best treatment for calcaneal fractures remains an enigma for orthopaedic surgeons. The purpose of the study was to compare clinical and radiographic outcomes between anatomic calcaneal plate (ACP) fixation and crossed Schanz pin (CSP) fixation in the treatment of Sanders type II and III displaced intra-articular calcaneus fractures (DICFs).

METHODS

Consecutive 65 patients (49 males, 16 females) who underwent surgery for DCIFs between January 2009 and February 2013 were retrospectively evaluated. The patients were divided into two groups as ACP and CSP according to the operative technique. The groups were compared in terms of demographic features, injury mechanism, operation time, fluoroscopy exposure, complications, full weight-bearing time, functional, and radiological outcomes.

RESULTS

VAS-rest score did not differ significantly between the groups while the VAS-activity score was significantly higher in the CSP group (p = 0.001 and p = 0.645, respectively). Foot Function Index (FFI) was significantly lower, Maryland Foot Score (MFS) and the American Orthopaedic Foot and Ankle Society-hindfoot score (AOFAS) were significantly higher in the ACP group (p = 0.047, p = 0.016, and p < 0.001, respectively). While no difference was observed between the preoperative and the early post-operative (1st day) Böhler angle and Gissane angle, both were significantly higher in the ACP group at the post-operative last control (p < 0.001 and p < 0.001, respectively).

CONCLUSION

Although crossed Schanz pin fixation shortens the operation time in displaced intra-articular calcaneus fractures compared to anatomic calcaneal plate, increased fluoroscopy exposure rates and low functional and radiological outcomes are disadvantageous of crossed Schanz pin. Anatomic calcaneal plate is still a better technique for preserving the alignment and elevating the displaced intra-articular segment for good to excellent mid-term results.

Sinus Tarsi Approach for Calcaneal Fractures: The New Gold Standard?

Displaced intra-articular calcaneal fractures are among the most difficult articular fractures to treat, with a high rate of potential complications. Is important to restore calcaneus posterior facet anatomy as well as calcaneus width, length, and height. The extensile lateral approach provides excellent fracture visualization and allows reduction of the displaced fracture fragments, but high complication rate has been described with this approach, so many studies favor the sinus tarsi approach. Recent evidence favoring sinus tarsi rather than the extensile lateral approach has shifted opinion toward this less invasive approach, which can be considered the new gold standard.

Comparing less invasive plate fixation versus screw fixation of displaced intra-articular calcaneus fracture via sinus tarsi approach

PURPOSE

The purpose of this study was to compare the post-operative radiographic and clinical outcomes of less invasive plate fixation versus screw fixation of displaced intra-articular calcaneus fractures (DIACFs) via sinus tarsi approach.

METHODS

A total of 165 consecutive DIACFs that underwent open reduction internal fixation via sinus tarsi approach from 2013 to 2018 were reviewed at least a two year follow-up. The methods of fixation were divided into two groups: less invasive plate fixation versus screw fixation of calcaneus fracture (59 vs 106, respectively). The radiographic outcomes including pre- and post-operative Bohler's and Gissane's angles were evaluated. The post-operative function was evaluated using the American Orthopaedic Foot and Ankle Society (AOFAS) hindfoot score, the Olerud and Molander Scale and the Visual Analogue Scale (VAS). The complications, the rates of implant removal and cost were also compared.

RESULTS

The average follow-up was 44.2 months in the plate groups and 47.9 months in the screw groups (P > 0.05). There was no significant difference in the Bohler's angle and Gissane's angle between the plate group and screw group during the pre-operation and the last follow-up. There was no significant difference in the final AOFAS score, Olerud and Molander score and VAS score between the two groups (P > 0.05). The total incidence of complications was 6.7% in the plate group and 6.6% in the screw group (P > 0.05). The rates of implant removal and total cost during the hospitalization in the plate group were significantly higher compared with screws group (P < 0.05).

CONCLUSION

The less invasive plate fixation versus screw fixation of DIACFs via sinus tarsi approach contributed comparable quality of reduction, complications and post-operative functional outcomes. The less invasive plate technique was significantly higher in terms of implant costs and the rate of implant removal.

An evaluation of the results of locked plate osteosynthesis applied without the use of bone graft in Sanders type III and IV intra-articular calcaneus fractures

PURPOSE

The clinical and radiological results of locked plate osteosynthesis with an extensive lateral approach without bone graft in Sanders type III and IV intra-articular calcaneus fractures and the factors affecting these results were evaluated retrospectively.

METHODS

A total of 61 patients with Sanders type 3 and 4 calcaneus fractures who underwent a lateral approach with locked plate osteosynthesis were included in the study. The mean follow-up was 44.8 months.

RESULTS

The mean pre- and post-operative Gissane and Bohler's angles were 113.5° ± 13.9° and 106.7° ± 13.6° (p = 0.006) and 2.8° ± 14.1° and 19.6° ± 13.1° (p < 0.001), respectively. The mean post-operative AOFAS scores, SF-36, and Maryland were 80.5 ± 13.6 in type IIIAB, 89.4 ± 6.3 in IIIAC, and 82.4 ± 12.5 in IV; 58.6 ± 14.5 in type IIIAB, 60.3 ± 11.7 in IIIAC, and 58.0 ± 15.6 in IV; and 63.8 ± 7.2 in type IIIAB, 64.3 ± 7.1 in IIIAC, and 62.8 ± 11.7 in IV (p = 0.173, p = 0.932, p = 0.824, respectively). Wound problems were observed in 15 (28.6%) patients. Deep infection was not observed in any patient.

CONCLUSION

The clinical results were similar in type III and IV intra-articular calcaneus fractures applied with locked plate osteosynthesis in an extensive lateral approach and without the use of bone graft. Intra-articular calcaneus fracture fixation with a lateral locked plate is an effective treatment method.

Patient-specific instrument-assisted minimally invasive internal fixation of calcaneal fracture for rapid and accurate execution of a preoperative plan: A retrospective study

Background

Traditional methods for minimally invasive internal fixation (MIIF) of calcaneal fractures require extensive intraoperative fluoroscopy, and fracture recovery is usually not ideal. We developed a new surgical procedure using digital surgical simulation and constructed a patient-specific instrument (PSI) for calcaneal fracture that we used during the operation. This study investigated whether PSI-assisted MIIF of calcaneal fracture enables rapid and accurate execution of the preoperative plan.

Methods

We retrospectively analyzed patients with Sanders type III or IV fresh calcaneal fractures who had undergone PSI-assisted MIIF at our hospital from January 2016 to December 2018. We analyzed perioperative data including intraoperative fluoroscopy time, concurrence of internal fixation actual usage (IFAU) with the preoperative plan, surgery time, and complications. We also compared pre- and postoperative actual measurements from X-ray radiographs and computed tomography images including Böhler, Gissane, and calcaneus valgus angles; subtalar joint width; and calcaneal volume overlap ratio with the preoperative design. All patients had been followed up and their American Orthopedic Foot and Ankle Score (AOFAS) score was available.

Results

Mean intraoperative fluoroscopy time was 3.95 ± 1.78 h; IFAU in 16 patients (16 ft) was the same as the preoperative plan; mean surgery time was 28.16 ± 10.70 min; and none of the patients developed complications. Böhler, Gissane, and calcaneus valgus angles and subtalar joint width did not differ between pre- and postoperative plans; however, the actual preoperative values of each of these parameters differed significantly from those measured postoperatively. The calcaneal volume overlap ratio with the preoperative design was 91.2% ± 2.3%. AOFAS scores increased with time, with significant differences in the score at each time point.

Conclusions

The newly developed PSI-assisted calcaneal fracture MIIF method can rapidly and accurately execute the preoperative plan.

Results After Percutaneous and Arthroscopically Assisted Osteosynthesis of Calcaneal Fractures

BACKGROUND

Operative treatment of calcaneal fractures using the extensile lateral approach is associated with high rates of soft tissue complications. In the past years, there has been a trend toward less invasive surgical approaches. Percutaneous and arthroscopically assisted calcaneal osteosynthesis (PACO) combines the advantages of visualization of the posterior facet of the subtalar joint with a minimally invasive approach.

METHODS

We conducted a follow-up of 25 patients with 26 calcaneal fractures (Sanders II and III), treated with PACO with a minimum follow-up of 12 months. The median age was 44 years (range, 21-72) and the follow-up period 15 months (12-33). Our clinical outcomes were the Manchester-Oxford Foot Questionnaire (MOxFQ), the Calcaneus Fracture Scoring System (CFSS), the American Orthopaedic Foot & Ankle Society (AOFAS) Ankle-Hindfoot score, the Short-Form-36 (SF-36), the visual analog scale (VAS) for pain, and the number of complications. Radiographs on follow-up were obtained to evaluate the reduction of the fractures as well as osteoarthritis of the subtalar joint.

RESULTS

The median MOxFQ score was 26.6 (0-76.6), the CFSS score 85 (26-100), and the AOFAS score 85 (50-100). The VAS pain score was 0 (0-5.7) at rest and 4.1 (0-8.2) during activity. The Böhler angle improved from a mean (SD) of 3.5 (12.3) degrees preoperatively to 27.7 (10.5) degrees postoperatively. The follow-up radiographs showed subsidence of the fractures and a Böhler angle of 20.3 (12.9) degrees. There were no wound-healing complications. Two patients had additional surgery with screw removal due to prominent hardware.

CONCLUSION

Our results suggest that PACO gives good clinical outcomes and a low risk of complications in selected calcaneal fractures. Prospective long-term studies will be necessary to better document the potential advantages and limitations of this operating technique.

LEVEL OF EVIDENCE

Level IV, retrospective case series.

Minimally invasive dual incision with mini plate internal fixation improves outcomes over 30 months in 20 patients with Sanders type III calcaneal fractures

Background

Calcaneal Sanders type III or higher fractures traditionally have been treated with open reduction and internal fixation (ORIF); however, ORIF has associated complications. We investigated a combination of minimally invasive dual incision and internal fixation using mini plates for treating Sanders type III calcaneal fractures.

Methods

Twenty patients with Sanders type III intra-articular calcaneal fractures with a posterior subtalar articular displacement > 2 mm were included. Surgical outcomes were assessed by visual analogue scale (VAS) pain score, American Orthopaedic Foot and Ankle Society (AOFAS) hindfoot score, and calcaneal geometry, including Böhler and Gissane angles.

Results

The Böhler angle, Gissane angle, and height and length of the calcaneus were increased following treatment. Based on the AOFAS score, 80% of cases had excellent or good outcomes. The mean postoperative VAS pain score was 1.6. Complications such as malunion or a screw positioning deviation occurred in 6 patients, and one patient experienced delayed wound healing. There were no wound infections.

Conclusions

These results indicate that minimally invasive dual incision with mini plate internal fixation may be an effective alternative to ORIF for treating Sanders type III calcaneal fractures. Advantages include improvement of calcaneal geometry and a lower rate of wound infections.

Early Complications Following Articular Calcaneus Fracture Repair: Evaluation of Open Versus Percutaneous Techniques

Objectives:

To assess complications and secondary operations in patients treated with either open reduction and internal fixation (ORIF) versus percutaneous fixation of displaced intra-articular calcaneus fractures.

Design:

Retrospective comparative study.

Setting:

Level 1 trauma center.

Patients/Participants:

Ninety-three adult patients with 111 fractures treated by a single orthopaedic traumatologist between 2001 and 2014.

Intervention:

ORIF through an extensile lateral approach or percutaneous reduction and internal fixation.

Main Outcome Measurements:

Wound-healing complications, infections, posttraumatic arthrosis (PTOA), and secondary procedures.

Results:

Fifty patients with 58 fractures underwent ORIF, and 43 patients with 53 fractures had percutaneous fixation. Mean age was 43 years, and 80% were male. Open fractures and two-part fractures were more often treated percutaneously (26% vs 8%, P = 0.03) and (49% vs 31%, P = 0.02), respectively. Patients undergoing percutaneous fixation were more often tobacco users (58% vs 36%, P = 0.04) and with history of alcohol and other substance abuse. Twenty-seven patients (29%) had 28 complications, including 21% with PTOA, with no differences based on type of treatment. Six patients had secondary procedures, with no difference based on type of treatment. Patients with open fractures (P = 0.001) or tobacco abuse (P = 0.005) were more likely to experience complications.

Conclusions:

No differences in complication rates were found for ORIF versus percutaneous fixation. Regardless of fixation technique, patients with open fractures or history of tobacco abuse were more likely to develop complications. Percutaneous reduction and fixation represents an alternative to extensile ORIF in terms of similar early and late complications, particularly in high risk patients.

Level of Evidence:

Therapeutic Level III

A systematic review and meta-analysis of the sinus tarsi and extended lateral approach in the operative treatment of displaced intra-articular calcaneal fractures

BACKGROUND

The optimal surgical approach for displaced intra-articular calcaneal fractures (DIACF) is subject of debate. The primary aim of this systematic review and meta-analysis was to assess wound-healing complications following the sinus tarsi approach (STA) compared to the extended lateral approach (ELA). Secondary aims were to assess time to surgery, operative time, calcaneal anatomy restoration, functional outcome, implant removal and injury to the peroneal tendons and sural nerve.

METHODS

MEDLINE, EMBASE and Cochrane databases were searched for clinical studies comparing the STA and the ELA (until September 2017).

RESULTS

Nine studies were included (two randomized controlled trials; seven comparative studies). 326 patients (331 fractures) were treated by the STA and 383 patients (390 fractures) by ELA. Ninety-nine per cent were Sanders type II/III fractures. Wound healing complications in the STA and ELA occurred in 11/331 and 82/390 fractures, respectively. Weighted means were 4.9% and 24.9%, respectively. Meta-analysis showed significantly less wound healing complications in the STA compared to ELA (risk ratio 0.20; 95% CI 0.11-0.36; P<0.00001; I²=0%). In general, time to surgery and operative time were shorter in the STA. Meta-analysis was not possible due to heterogeneity between studies. No differences were found in remaining secondary outcomes.

CONCLUSIONS

The STA is associated with significantly less wound healing complications. With similar functional outcome and calcaneal anatomy restoration, the STA may be the preferred approach in the operative treatment of Sanders type II/III DIACF.

Sinus Tarsi Approach with Subcutaneously Delivered Plate Fixation for Displaced Intra-Articular Calcaneal Fractures

Displaced intra-articular calcaneal fractures can be treated with open reduction and internal fixation through various methods, including the extensile lateral approach, sinus tarsi approach, percutaneous reduction and fixation, external fixation, and calcaneoplasty. Although the gold standard is the extensile lateral approach, this method has significant wound-healing complications associated with it. Literature shows that the reduction achieved through minimally invasive techniques is equal to that achieved with the extensile lateral approach, while reducing the amount of postoperative complications. This article outlines a technique that uses the sinus tarsi approach with subcutaneous plate fixation.

Surgical Management of Displaced Intra-Articular Calcaneal Fractures: What Matters Most?

Displaced intra-articular calcaneal fractures are severe, complex injuries that can cause significant long-term functional impairment. Despite the controversies of whether these fractures should be treated operatively or nonoperatively, functional improvement can be seen with confounding variables that can be controlled by the surgeon. This article reviews prognostic factors that are associated with good functional outcomes following operatively treated displaced intra-articular calcaneal fractures.

Computed Tomography Imaging-Based Preoperative Virtual Simulation for Calcaneal Fractures Reduction

Reduction of calcaneal fractures via a small incision approach at the sinus tarsi is technically difficult. This study was undertaken to determine if preoperative virtual simulation based on computed tomographic data improves reduction and reduces complications. Fifty-five patients with calcaneal fractures were treated via the sinus tarsi approach with minimally invasive plates between February 2013 and December 2015. DICOM files obtained from computed tomographic imaging preoperatively were imported into Superimage software, and virtual surgery was performed. Preoperative planning time, operative time, and complications were recorded. Clinical function was analyzed with radiology and with the American Orthopaedic Foot and Ankle Society and visual analogue scale scores. As a result, preoperative planning time was 30.7 ± 4.1 minutes, which increased with the severity of the fracture (Sanders III vs Sanders II: 34.2 ± 2.5 minutes vs 27.8 ± 2.7 minutes), which was in line with the real surgery, with a mean operative time of 86.7 ± 4.5 minutes (Sanders III vs Sanders II: 89.5 ± 2.7 minutes vs 84.3 ± 4.4 minutes). Radiologic results indicated that the calcaneal width, length, height, Böhler angle, and Gissane angle were significantly corrected from preoperatively to postoperatively. After a mean follow-up of 21.5 ± 6.1 months, no complications were observed. The mean American Orthopaedic Foot and Ankle Society score was 88.7 ± 4.0, with an excellent/good rate of 94.5% (52 of 55). The mean visual analogue scale score was 0.8 ± 0.9. In conclusion, preoperative virtual simulation may be efficient to promote accomplishment of sinus tarsi surgery, and this step may help improve outcomes for calcaneal fractures.

Should the Extended Lateral Approach Remain Part of Standard Treatment in Displaced Intra-articular Calcaneal Fractures?

The aim of this study was to evaluate the results of open reduction and internal fixation through the extended lateral approach (ELA) in displaced intra-articular calcaneal fractures and to determine whether this approach should remain part of standard therapy. This retrospective cohort study included 60 patients with 64 displaced intra-articular calcaneal fractures who underwent surgical treatment through the ELA. Outcome measures were the visual analog scale foot and ankle (VAS FA), the American Orthopedic Foot and Ankle Society (AOFAS) score, surgical site infections (SSIs), and reoperations. We determined the AOFAS score for 40 patients with 42 fractures, and 42 patients with 44 fractures completed the VAS FA questionnaire. The mean VAS FA score was 61.0 ± 23.4 and the median AOFAS score was 83 (range 33 to 100), with 55% good to excellent scores. We found 10.9% superficial SSIs successfully treated with antibiotics. In 4.7% of patients a deep SSI was diagnosed, wherefore premature implant removal was necessary. Patients with an SSI did not have significantly lower VAS FA or AOFAS scores than did patients without an SSI (p = .318 and p = .766, respectively). Implant removal in absence of SSIs was necessary in 17 patients because of pain, and 3 patients needed secondary arthrodesis because of persistent pain. We concluded that the ELA proved to be a safe procedure, and moreover the most common complications did not influence the long-term outcomes of patients. However, recent literature demonstrates that less invasive techniques seem to exceed the ELA with respect to wound complications.

Extensile lateral versus sinus tarsi approach for displaced, intra-articular calcaneal fractures: a meta-analysis

Background

Operative management of displaced, intra-articular calcaneal fractures is associated with improved functional outcomes but associated with frequent complications due to poor soft tissue healing. The use of a minimally invasive sinus tarsi approach to the fixation of these fractures may be associated with a lower rate of complications and therefore provide superior outcomes without the associated morbidity of operative intervention.

Methods

We reviewed four prospective and seven retrospective trials that compared the outcomes from the operative fixation of displaced intra-articular calcaneal fractures via either an extensile lateral approach or minimally invasive fixation via a sinus tarsi approach.

Results

Patients managed with a sinus tarsi approach were less likely to suffer complications (OR = 2.98, 95% CI = 1.62–5.49, p = 0.0005) and had a shorter duration of surgery (OR = 44.29, 95% CI = 2.94–85.64, p = 0.04).

Conclusion

In displaced intra-articular calcaneal fractures, a minimally invasive sinus tarsi approach is associated with a lower complication rate and quicker operation duration compared to open reduction and internal fixation via an extensile lateral approach.

Limited Approaches to Calcaneal Fractures

PURPOSE OF REVIEW

To review literature published in the last 3 years related to minimally invasive approaches to calcaneal fracture fixation.

RECENT FINDINGS

Numerous randomized control trials, cohort studies, and meta-analyses have been done in the last 3 years comparing surgical treatment of calcaneus fractures. These studies indicate minimally invasive procedures decrease wound complication rates and achieve similar radiographic and clinical outcomes to open reduction internal fixation. In comparing different surgical treatment methods to non-operative treatment, operative management has increased complication rates but may lead to better functional outcomes in certain patient populations. Optimal treatment for displaced intra-articular calcaneus fractures continues to be debated. Current literature would suggest that the decision to operate be based on patient and fracture characteristics and surgeon capabilities. Minimally invasive techniques aim to improve patient reported outcomes and quality of life while decreasing complications and offer another option for surgeons in the treatment of displaced intra-articular calcaneal fractures.

The "Open-Envelope" Approach: A Limited Open Approach for Calcaneal Fracture Fixation

BACKGROUND

Minimally invasive surgery (MIS) has a significant and evolving role in the treatment of displaced intra articular calcaneal fractures (DIACFs), but there is limited literature on this subject. The objective was hence to assess the clinicoradiological outcomes of DIACFs fixed with an innovative open-envelope MIS technique.

MATERIALS AND METHODS

42 closed Sanders Type 2 and 3; DIACFs were included in this study. The Open-envelope approach was developed, which is essentially a limited open, dual incision, modified posterior longitudinal approach allowing excellent visualisation and direct fragment manipulation. The main outcome measures were American Orthopaedic Foot and Ankle Score (AOFAS) hindfoot score and preoperative and postoperative radiological angles.

RESULTS

The Bohler angle improved from a preoperative mean of 14.3° (range 0°-28°) to a postoperative mean of 32.46° (range 22°-42°). The Gissane angle improved from a preoperative mean of 135.83° to a postoperative mean of 128.33°. The postoperative improvement in Bohler and Gissane angles was highly significant (P < 0.001). The AOFAS scores at 6 months were excellent in nine patients, good in 15 patients, and fair in six patients. Three patients had residual valgus deformity of the heel.

CONCLUSIONS

Open-envelope technique minimized soft tissue complications and achieved acceptable radiological reductions with good clinical outcomes.