Fractures of the calcaneum

Radiological outcomes following open versus percutaneous fixation versus arthroscopically assisted percutaneous fixation of calcaneal fractures: a ten-year retrospective observational study

BACKGROUND

Calcaneal fractures are often major injuries associated with considerable morbidity. The optimal surgical management of displaced calcaneal fractures remains contentious with open, percutaneous and arthroscopically assisted percutaneous approaches all offering potential benefits for patients. The aim of this study was to assess which of these three separate surgical approaches to the management of displaced calcaneal fractures provides the best radiographic deformity correction.

METHODS

This is a retrospective observational study of all calcaneal fractures undergoing operative fixation at a single major trauma centre in the UK. The primary outcome was pre- and post-operative assessment of the deformity correction using radiographic parameters (angle of Gissane and Bohler's angle). Secondary outcomes included fracture configuration, complications and re-operation rate.

RESULTS

Between 01/01/2009 and 31/12/2019, 152 calcaneal fractures in 134 patients underwent operative management via either an open or percutaneous approach. One-way ANOVA testing of the pre- and post-operative radiographic parameters demonstrated that an open approach offered superior post-operative correction of Bohler's angle when compared to percutaneous alone (p < 0.05); however, there was no difference in post-operative angle of Gissane (p > 0.05). The mean follow-up for complication and re-operation data was 3.5 years (range 0.1-12.4). Overall complication rate following all surgical fixation was 7.2% with a further 32.2% requiring further long-term surgical intervention for subtalar arthritis or removal of metalwork.

CONCLUSION

Arthroscopically assisted percutaneous fixation does not offer superior radiographic deformity correction compared to percutaneous technique alone. Open fixation yielded improved correction of Bohler's angle when compared to percutaneous alone; however, there was no difference in post-operative angle of Gissane.

LEVEL OF EVIDENCE

III.

Sanders type III calcaneal fracture fixed with a locking angular plate: A case report

Introduction. The calcaneus is a tarsal bone which plays a major role in transferring weight from the lower leg down through the ankle joint onto the forefoot and toes. It participates in the formation of the outer and inner longitudinal arch of the foot and has a significant role in walking and transferring body weight. Calcaneal fractures most often occur by jumping, falling from a height, or less often, in traffic accidents. Calcaneal fractures can be extra-articular and intra-articular. Intra-articular fractures can entirely damage joint surfaces, which results in deformity and immobility of the foot. They can be extra-articular and intraarticular, when disruption of the entire articular surfaces, deformity, and weakness of the foot occur. Case report. This case report presents a 40-year-old male with an intra-articular calcaneal fracture. He was injured by falling from a height of 3 meters and sustained an intra-articular fracture type IIIAB where one fracture line went laterally and the other centrally over the posterior calcaneal facet. Surgery was performed on the sixth day after the injury. The prepared locking plate for calcaneus was adapted and fixed with spongy screws in relatively preserved joint fragments: sustentaculum tali, tuberositas lateralis calcanei and tuber calcanei. In this way, we ensured the position of the repaired fragments, and then we placed 4 more spongy screws inside the healthy bone tissue, which was enabled with the use of this plate. With this procedure, the calcaneal axis, i.e. the varus deformity, height, width, length and angles of the bone (Bohler's and Gissane's angle) were corrected. From day one, the patient started to move his toes, and on the third day the patient started to move the ankle and began to walk with the help of props with no support on the leg. Conclusion. The preoperative value of Bohler's angle is a significant correlation between the severity of the injury and displacement of fragments in intra-articular calcaneal fractures. The goal of the surgery was to restore the posterior calcaneal articular facet, avoid soft tissue infection and form a normal shape and position of a foot.

3D imaging added value in the treatment and diagnosis of displaced intra-articular calcaneal fractures (DIACF): measuring the orientation of the posterior talo-calcaneal facet in the space

PURPOSE

Measure the reduction quality of calcaneal fractures on 3 D segmented images.

METHODS

The Ethics Review Board approved this study and written informed consent was collected from all patients. Bilateral CT scans of fifty-four patients with unilateral displaced calcaneal fracture were obtained before and after osteosynthesis. Orientation angle of the posterior subtalar joint facet (PTC) of displaced intra-articular calcaneal fractures of 54 patients was measured on segmented 3 D images before and after surgery and compared to the uninjured side. This orientation angle (OAC) is the average of every normal vector of each point of the PTC, as compared to the main calcaneal axis (calculated by first principal component analysis). The PTC is a well-known anatomical structure, relatively easy to identify on 3 D imaging.

RESULTS

This OAC angle was low before surgery (mean= 95°, std dev= 6°), statistically significantly different from the uninjured side value, p < 0.001. The OAC angle of the operated bone was nearly equal to the uninjured side (mean= 103°, std dev= 5°), without any statistically significant difference between postoperative values and uninjured side values. We found linear correlation between the quality of the reduction when assessed with this OAC and the functional score (AOFAS) (Adjusted R²=0.62, p = 0.04).

CONCLUSIONS

This angle seems to be useful to quantify the quality of the operative reduction of displaced intra-articular calcaneal fractures.

Calcaneal Fractures-Which Approach for Which Fracture?

Treatment of calcaneal fractures has to be tailored to the individual pathoanatomy. If operative treatment is chosen, anatomic reconstruction of the calcaneal shape and joint surfaces is mandatory. For most of the displaced, intraarticular fractures, this can be achieved by less invasive reduction and fixation via a sinus tarsi approach, which may be extended along the "lateral utility" line for calcaneocuboid joint involvement or calcaneal fracture-dislocations. Purely percutaneous fixation is the treatment of choice for displaced extraarticular fractures and simple intraarticular fractures with adequate control of joint reduction. Specific approaches are used for rare calcaneal fracture variants.

An evaluation of the efficacy of the locked plate with bone grafting in Sanders type III and IV intra-articular calcaneus fractures

Objective:

To demonstrate the efficacy of locking plate osteosynthesis performed by an L-shaped lateral approach in patients with Sanders type III and IV intra-articular calcaneal fractures with posterior facet displacement.

Methods:

Fifty-three patients with Sanders type III or IV unilateral calcaneal fractures treated with locking plates and additional bone grafting were included in the study. Böhler and Gissane angles, and heel height values were measured on the radiological examinations. Clinical results of the patients were evaluated using the American Orthopaedic Foot and Ankle Society and Maryland evaluation criteria. The presence of arthrosis was investigated with Broden’s view. Preoperative and postoperative values were evaluated.

Results:

The mean Gissane angle was 119.32°, the mean Böhler angle was 9.47° and the mean heel height was 40.82 mm on radiographs at initial presentation of the patients. The mean Gissane angle was 114.63°, the mean Böhler angle was 23.33° and the mean heel height was 47.84 mm on the early postoperative radiographs of the patients. In patients, a mean 4.69° recovery was achieved in the Gissane angle, 13.86° in Böhler angle and 7.02 mm in heel height. On the most recent follow-up, Böhler angle was 21.49°, Gissane was 114.88° and the mean heel height was 46.95 mm. The mean American Orthopaedic Foot and Ankle Society score and Maryland score were 86.91 and 86.53, respectively, on the last follow-up.

Conclusion:

Internal fixation and grephonage using low-profile locking plates provides good functional results to patients since it facilitates anatomic restoration of the subtalar joint and correction of calcaneal height, width and varus/valgus heel.

Arthroscopic-assisted percutaneous fixation of intra-articular calcaneal fractures using an intraoperative distraction device

PURPOSE

To evaluate the quality of reduction and clinical outcomes by using Percutaneous Distractor and Subtalar Arthroscopy Closed Reduction followed by Internal Fixation (PDSA-CRIF) in the intra-articular calcaneal fracture.

METHODS

A consecutive case series of 453 patients with 507 displaced intra-articular calcaneal fractures was recruited in this retrospective study. We performed PDSA-CRIF to treat intra-articular calcaneal fractures. The quality of reduction was assessed by early postoperative Computed Tomography (CT) scans and measurement of serial Bohler's angles during follow-ups. Clinical outcomes were evaluated by Visual Analogue Scale (VAS) and the American Foot & Ankle Society ankle-hind foot scale (AOFAS) scoring system.

RESULTS

Fifty-nine patients (68 fractures) who had complete clinical data and follow-up of at least 12-months (mean: 14 months, range: 12-59 months) were finally included. Anatomical and near-anatomical reduction in subtalar articular surface which had less than 2 mm gap or step-off was found in 93% fractures. Unsatisfactory reduction was found in 7%.

CONCLUSION

Arthroscopic-assisted percutaneous fixation using a distraction device is effective in achieving positive short-term results in the displaced intra-articular calcaneal fractures. A multicenter, large sample, randomized control trial is needed to fully evaluate the long-term effects of PDSA-CRIF in comparison to other methods.

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.

The importance of Böhler's angle in calcaneus geometry: A finite element model study

OBJECTIVES

Calcaneal fractures are the most common tarsal fractures following a foot-ankle trauma. The Böhler's angle is an important measurable angle before, during, and after surgery. In this study, we aimed to investigate correlation between Böhler's angle, calcaneal strength, and subtalar joint stress using a finite element analysis (FEA).

PATIENTS AND METHODS

Between January 2016 and December 2016, computed tomography (CT) scans were used with MIMICS® software for FEA. The ankle and foot of a 23-year-old male person with a height of 180 cm and weighing 80 kg was modeled as reference. Raw coronal CT images were obtained in Digital Imaging and Communications in Medicine format with the resolution of 512X512 pixels and 0.3-mm slice intervals in 135 kV. The structures including tibia, fibula and 26 other bones (talus, calcaneus, cuboid, navicular, three cuneiforms, five metatarsals, and 14 components of phalanges), cartilage and ligamentous tissues were modeled to form ankle joint. After determining Böhler's angle as 35 degrees for the reference model, a fracture line was created on calcaneus. Calcaneus was remodeled with the Böhler's angle of 45, 40, 30, 25, 20, 10, and 0 degrees respectively. All models were transferred to ANSYS software for FEA and the loads on the lower extremities with normal posture were applied on models.

RESULTS

Analysis of all models based in the reference model revealed that maximum tension values on calcaneus increased, while the Böhler's angle decreased, indicating a statistically significant difference. The decreased Böhler's angle indicated statistically significantly higher maximum tension values (p=0.04). Action force in subtalar joint was evaluated by comparing with the forces in reference model. The increased Böhler's angle was found to be associated with statistically significantly decreased amount of load on subtalar joint. The decreased Böhler's angle was related to the statistically significantly increased amount of load on subtalar joint.

CONCLUSION

Our study results suggest that decreased Böhler's angle increases the possibility of subtalar arthrosis, although overcorrection of the Böhler's angle seems not to increase the risk of subtalar arthrosis.

Patient-Reported Outcome Following Operative and Conservative Treatment of Calcaneal Fractures: A Retrospective Analysis of 79 Patients at Short- to Midterm Follow-Up

Background: Fractures of the calcaneus are severe injuries of the hindfoot, mostly resulting from high-energy axial loads, which still present enormous challenges to modern trauma surgery. Possible variables influencing the outcome are the type of fracture, age, and quality of fracture reduction. These might also be factors affecting the self-reported patient outcome, but large studies are still lacking. Therefore, the aim of this study was to analyze the patient-reported outcome of calcaneal fractures following operative and conservative treatment.

Methods: All patients suffering from calcaneal fractures between 2002 and 2015 were enrolled in this retrospective analysis. The calcaneal fractures were classified according to Sanders and the AO classification system. For further analysis, two groups were formed: group I involved complex intra-articular fractures defined by the involvement of the posterior calcaneal facet, while group II consisted of extra-articular and process calcaneal fractures. Data were collected via the patient registry, radiographs, and a standardized questionnaire (Foot and Ankle Outcome Score, FAOS). For outcome analysis, non-parametric Mann–Whitney U-test was performed, and Spearman's rank correlation coefficient was calculated.

Results: In total, the functional outcome of 79 patients with calcaneal fractures was analyzed. In group 1 (n = 43), the mean FAOS score was 65.5 ± 18.9. The surgically treated patients with a Sanders type II calcaneal fracture had a mean FAOS score of 72.9 ± 17.2, type III fractures had 65.6 ± 20.8, and type IV had 61.1 ± 19 (p = 0.15). The reoperation rate was 22%, most frequently caused by wound complications (10%). The mean follow-up time was 64.5 ± 44 months. The mean FAOS score of group 2 (n = 36) was 75.2 ± 18.4, and 83% of the patients (=30) were managed conservatively. Only one out of six operatively managed patients had a reoperation due to regular implant removal. The mean follow-up time was 31 ± 25.9 months.

Conclusion: Intra-articular calcaneal fractures are severe injuries of the hindfoot leading to a fair to poor functional outcome in the majority of the patients. Complications regarding wound healing are the most common causes for revisional surgery. Extra-articular calcaneal fractures are a heterogenous entity commonly managed non-operatively. Overall, they show a better functional outcome in comparison to intra-articular calcaneal fractures.

The socioeconomic impact of orthopaedic trauma: A systematic review and meta-analysis

The overall objective of this study was to determine the patient-level socioeconomic impact resulting from orthopaedic trauma in the available literature. The MEDLINE, Embase, and Scopus databases were searched in December 2019. Studies were eligible for inclusion if more than 75% of the study population sustained an appendicular fracture due to an acute trauma, the mean age was 18 through 65 years, and the study included a socioeconomic outcome, defined as a measure of income, employment status, or educational status. Two independent reviewers performed data extraction and quality assessment. Pooled estimates of the socioeconomic outcome measures were calculated using random-effects models with inverse variance weighting. Two-hundred-five studies met the eligibility criteria. These studies utilized five different socioeconomic outcomes, including return to work (n = 119), absenteeism days from work (n = 104), productivity loss (n = 11), income loss (n = 11), and new unemployment (n = 10). Pooled estimates for return to work remained relatively consistent across the 6-, 12-, and 24-month timepoint estimates of 58.7%, 67.7%, and 60.9%, respectively. The pooled estimate for mean days absent from work was 102.3 days (95% CI: 94.8-109.8). Thirteen-percent had lost employment at one-year post-injury (95% CI: 4.8-30.7). Tremendous heterogeneity (I2>89%) was observed for all pooled socioeconomic outcomes. These results suggest that orthopaedic injury can have a substantial impact on the patient's socioeconomic well-being, which may negatively affect a person's psychological wellbeing and happiness. However, socioeconomic recovery following injury can be very nuanced, and using only a single socioeconomic outcome yields inherent bias. Informative and accurate socioeconomic outcome assessment requires a multifaceted approach and further standardization.

Impact of surgical procedures on soft tissue microcirculation in calcaneal fractures: A prospective longitudinal cohort study

PURPOSE

Wound healing complications are a major concern after open reduction and internal fixation (ORIF) in patients with calcaneal fractures. Microcirculation is known to play a key role in bone and soft tissue healing. The present study aimed to characterize and contrast the dynamics of changes in microcirculation comparing two different surgical procedures: A) ORIF and B) a minimally invasive approach (MIA).

METHODS

Blood flow (BF[AU]), oxygen saturation (sO₂[%]) and relative amount of haemoglobin (rHb[AU]) were measured at two depths (2 mm and 8 mm) non-invasively by spectrophotometry (Micro-Lightguide O2C®, LEA Medizintechnik, Giessen, Germany) before surgery and every 24 h after surgery for a duration of six days. A linear mixed model (LMM) was used to analyse longitudinal data and repeated measurements.

RESULTS

Nineteen patients (44 years, range 21.9-71.0 years) were enrolled in the study. Surgical treatment consisted of ORIF (n = =15) and MIA (n = =9). The postoperative BF and sO₂ at the 2 mm and 8 mm depths were higher in the ORIF group (BF: p < 0.001, p = =0.003; sO₂: p = =0.001, p = =0.011). The BF at the 2 mm and 8 mm depths increased after surgery (2 mm: p = =0.003, 8 mm: p = =0.001) in both groups. This increase did not correlate with the surgical technique. sO₂ and rHb values at the 8 mm depth decreased after surgery (sO₂: p = =0.008, rHb: p < 0.001) in both groups, whereas sO₂ at the 2 mm depth increased after surgery (p = =0.003). Furthermore, the surgical technique correlated with the postsurgical course of sO₂ values at the 2 mm depth (p = =0.042).

CONCLUSIONS

The spectrophotometry results were in line with the generally accepted phases of soft tissue wound healing. Postsurgical changes in microcirculation are predominantly independent of surgical techniques and may be primarily determined by wound and fracture healing. Future studies should focus on the potential of spectrophotometry to monitor wound healing after surgery. Moreover, studies with longer observation periods are needed in order to examine the changes in microcirculation during all wound-healing phases.

[Outcome after surgical treatment of calcaneal fractures]

BACKGROUND

After controversial discussions in the literature about therapy regimens for calcaneal fractures, a retrospective study of patients operatively treated in a maximum care trauma center was conducted.

OBJECTIVE

Investigation of the influencing factors on the treatment quality of operatively treated patients with calcaneal fractures.

MATERIAL AND METHODS

Between 2005 and 2013 a total of 90 patients with calcaneal fractures were surgically treated in this hospital with locking plate osteosynthesis. A total of 48 patients with 55 fractures were retrospectively investigated. The assessment with respect to posttraumatic arthrosis was made radiologically and Böhler's and Gissane's angles were also determined. Clinically AOFAS and SF-36 scores were documented. The results were statistically tested with respect to possible risk factors.

RESULTS

A total of 9 patients (18.8%) were found with complications necessitating operative revision, with 8 patients requiring subtalar arthrodesis and 1 patient with a deep wound infection. Nicotine abuse and a long interval between trauma and reconstructive surgery were identified as factors that influenced the development of wound healing problems. The average AOFAS score was 68 points and the SF-36 was 58.86 points. A poor result in the scores was caused by the development of symptomatic arthritis and the type of insurance. In this cohort factors, such as age and complexity of fractures were not correlated with a poor result.

CONCLUSION

In this patient collective nicotine abuse and a long interval between trauma and surgery were risk factors for development of wound infections. Other factors with an influence on the outcome were the postoperative development of arthritis and the type of health insurance; however, patient age had no impact on the outcome.

Comparison of plate, calcanealplasty and external fixation in the management of calcaneal fractures

OBJECTIVE

Managing displaced intra-articular calcaneal fractures remains controversial. The purpose of this study is to compare and identify the surgical technique with the best outcomes for the treatment of intra-articular calcaneal fractures.

MATERIALS AND METHODS

This is a retrospective multicentric study conducted between February 2000 and June 2014 in 206 patients with intra-articular calcaneal fractures presenting to the outpatient or emergency department of three different orthopaedic departments. The patients were treated with one of the following techniques: 1. Open reduction and internal fixation with screws and plate; 2. Percutaneous reduction and monolateral external fixation; and 3. Balloon-assisted reduction, pin fixation and tricalcium phosphate augmentation.

RESULTS

Patients treated with open reduction and internal fixation using an extensive lateral approach had a mean AOFAS score of 71 points; those treated through a minimal incision and reduction and fixation with an external fixator had a mean score of 83.1 points; and those treated with the balloon-assisted reduction, pin fixation and tricalcium phosphate augmentation had a mean score of 78.75 points. No statistically difference was found comparing the three types of treatment.

CONCLUSION

Displaced intra-articular calcaneal fractures are still technically demanding injuries to manage. The results of this study suggest that in comparison to open reduction, a percutaneous reduction and fixation leads to higher but not statistical functional scores minimizing the wound-healing complications.

The physiological range of the Böhler's angle in the adult Croatian population

BACKGROUND

To examine the relationship of the Böhler's angle with age, sex, and laterality, and to analyze the interrater agreement.

METHODS

After 248 digital lateral radiographs of the foot were submitted to exclusion criteria, three raters independently measured the Böhler's angle on the remaining 130 X-rays in PACS. The variables were analyzed with correlation coefficients, and one-way ANOVA. The repeated measures of ANOVA were computed across age groups (30-39, 40-49, 50-59, and 60-69 years). The interrater agreement was calculated using intraclass correlation coefficient (ICC).

RESULTS

The mean value of the Böhler's angle was 34±5° (21-46°). It was not related to age (in general [p=0.057], and across groups [p from 0.107 to 0.122]), sex (p=0.344; p=0.342), and laterality (p=0.618; p=0.617). The interrater reliability was almost perfect (ICC=0.94).

CONCLUSIONS

The Böhler's angle was not related to age, sex, and laterality, whereas the interrater agreement was almost perfect.

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.

Traumatic Injury to the Subtalar Joint

Traumatic injury to the subtalar joint occurs during subtalar dislocations, talar and calcaneal fractures, and fracture-dislocations. After closed reduction of subtalar dislocations, peripheral talar or calcaneal fractures need to be ruled out by computed tomography scanning. In fractures and fracture-dislocations of the talus and calcaneus involving the subtalar joint, anatomic reconstruction of joint congruity is essential for functional rehabilitation. Failure to anatomically reduce the subtalar joint potentially leads to chronic instability, subtalar arthritis and posttraumatic hindfoot deformity. Despite adequate management, subtalar arthritis may develop as a result of primary cartilage damage at the time of injury.

Radiological and Clinical Effectiveness of a Novel Calcaneal Fracture Brace after Intra-articular Calcaneal Fracture Surgery

Background

After calcaneal fracture surgery, a short leg splint and cast are typically applied. However, these restrict joint exercises, which is inconvenient for patients. In addition, there is a risk of complications, such as pressure ulcers or nerve paralysis with a short leg cast. In this study, we evaluated clinical and radiological outcomes of the use of a specially designed calcaneal brace after calcaneal fracture surgery.

Methods

From among patients who underwent open reduction and internal fixation for calcaneal fracture between July 9, 2013 and May 31, 2017, 102 patients who wore a calcaneal fracture brace (group A) and 82 patients who wore a postoperative short leg cast (group B) were randomly chosen for this study. Radiological changes and clinical factors were compared between the two groups. After swelling at the surgical site decreased, a special calcaneal brace was applied to patients in group A. They were allowed to perform early weight bearing and joint motion. Patients in group B were immobilized in a short leg cast and were told to avoid weight bearing for 6 weeks. In each group, the Böhler's angle and Gissane's angle were measured and compared using postoperative and final follow-up radiographs. Pain (measured using a visual analogue scale [VAS]) and ankle joint range of motion (dorsiflexion, plantar flexion, eversion, and inversion) were measured serially until the final follow-up visit.

Results

There were no significant differences in the Böhler's angle or Gissane's angle between the two groups as measured postoperatively and at the final follow-up (paired t-test). Differences in the VAS pain score and eversion were also statistically nonsignificant between the two groups. However, group A had a significantly higher range of dorsiflexion (p = 0.021), plantar flexion (p = 0.012), and inversion (p = 0.045) of the ankle than group B (independent t-test).

Conclusions

Application of the calcaneal fracture brace after open reduction and internal fixation of a calcaneal fracture not only maintained the fracture reduction but allowed for greater joint motion than the short leg cast. Thus, the calcaneal fracture brace can be considered an effective postoperative management option that enables early resumption of daily activities and facilitates postoperative joint motion.

Risk factors for increased postoperative drainage of calcaneal fractures after open reduction and internal fixation: An observational study

Sufficient drainage is very important for preventing wound complications after open reduction and internal fixation (ORIF) of calcaneal fractures. However, the drainage amount varies among patients. The objective of this study was to identify factors associated with increased postoperative drainage after ORIF of calcaneal fractures.A retrospective study including 87 patients with 92 calcaneal fractures in our hospital was performed. Patients were divided into 2 groups based on whether they had increased drainage, which was defined as a total drainage of ≥340 mL (50th percentile). We gathered the following data on each patient: age; sex; smoking history; body mass index (BMI); American Society of Anesthesiologists (ASA) classification; fracture type; the time from injury to surgery; operative time; bone grafting; preoperative labs including prothrombin time (PT), activated partial thromboplastin time (APTT), hematocrit, and D-dimer level; and histories for hypertension, diabetes, and heart disease. Univariate analysis and multivariate logistic regression analysis were used to analyze the risk factors associated with increased drainage.Total drainage ranged from 105 to 1185 mL, and the average drainage for this cohort was 393.6 ± 232.4 mL (mean ± standard deviation). 57.6% (n = 53) of patients had increased drainage. Smoking history, Sanders type, operative time, and bone grafting were significantly associated with increased drainage on univariate analysis. Multivariate logistic regression analysis then demonstrated that active smoking and higher Sanders type were independent risk factors for increased drainage.Patients with calcaneal fractures who smoked or had a higher level of Sanders type had a higher risk of increased postoperative drainage. Therefore, we suggest that active precautions be taken for these patients to reduce the rate of postoperative wound complications.

Calcaneal Fractures - Should We or Should We not Operate?

The best treatment for displaced, intraarticular fractures of the calcaneum remains controversial. Surgical treatment of these injuries is challenging and have a considerable learning curve. Studies comparing operative with nonoperative treatment including randomized trials and meta-analyses are fraught with a considerable number of confounders including highly variable fracture patterns, soft-tissue conditions, patient characteristics, surgeon experience, limited sensitivity of outcome measures, and rehabilitation protocols. It has become apparent that there is no single treatment that is suitable for all calcaneal fractures. Treatment should be tailored to the individual fracture pathoanatomy, accompanying soft-tissue damage, associated injuries, functional demand, and comorbidities of the patient. If operative treatment is chosen, reconstruction of the overall shape of the calcaneum and joint surfaces are of utmost importance to obtain a good functional result. Despite meticulous reconstruction, primary cartilage damage due to the impact at the time of injury may lead to posttraumatic subtalar arthritis. Even if subtalar fusion becomes necessary, patients benefit from primary anatomical reconstruction of the hindfoot geometry because in situ fusion is easier to perform and associated with better results than corrective fusion for hindfoot deformities in malunited calcaneal fractures. To minimize wound healing problems and stiffness due to scar formation after open reduction and internal fixation (ORIF) through extensile approaches several percutaneous and less invasive procedures through a direct approach over the sinus tarsi have successfully lowered the rates of infections and wound complications while ensuring exact anatomic reduction. There is evidence from multiple studies that malunited displaced calcaneal fractures result in painful arthritis and disabling, three-dimensional foot deformities for the affected patients. The poorest treatment results are reported after open surgical treatment that failed to achieve anatomic reconstruction of the calcaneum and its joints, thus combining the disadvantages of operative and nonoperative treatment. The crucial question, therefore, is not only whether to operate or not but also when and how to operate on calcaneal fractures if surgery is decided.

Functional outcome after calcaneus fractures: a comparison between polytrauma patients and isolated fractures

BACKGROUND

Displaced intra-articular calcaneal fractures (DIACFs) can have long-term consequences in terms of foot pain and disability. This injury frequently occurs in the context of polytrauma patients and its influence in long-term functional prognosis is well known. The purpose of this study is to compare the etiology, severity, and functional outcome of the operated DIACFs between polytrauma patients and isolated cases.

METHODS

Eighty-six patients with operated displaced intra-articular calcaneal fractures through open reduction and internal fixation (ORIF) were managed at our institution between January 1, 2008 and December 31, 2015. Eighty patients completed the follow-up, nine of them with both calcaneus operated (89 calcaneus) by ORIF with a plate. Two groups were established; one included 11 (14%) polytrauma patients, three of them with operated bilateral calcaneus, and 69 (86%) patients without polytrauma diagnosis. Severity of trauma, injury patterns, psychiatric background, associated fractures, second surgeries and functional questionnaire (adjusted American Orthopedic Foot and Ankle Society - AOFAS - ankle-hindfoot scale and SF-36) were collected. A detailed comparative statistical analysis is provided.

RESULTS

There was significant statistical relationship between polytrauma patients and those with psychiatric comorbidities, severe trauma or severe injury, but not with second surgeries, later subtalar arthrodesis or outcome measures. Only calcaneal fractures with comminution according to Sanders classification was associated with second surgeries and later subtalar arthrodesis. The AOFAS score was solely related to trauma severity (71.5 vs 77; p = 0.29) and calcaneal fracture's comminution according to Sanders classification (79.4 type II and 79.3 type III vs 69.2 type IV; p = 0.000 and p = 0.008, respectively) and SF-36 score only with trauma severity (67.4 vs 78.1; p = 0.00) and psychiatric comorbidities (62.2 vs 75.8; p = 0.048).

CONCLUSION

No differences in outcome measures and second surgeries were found between polytrauma patients and isolated fractures. For DIACFs, the severity of the impact was correlated with a higher number of second surgeries and worse functional outcomes. Following a DIACF, patients with psychiatric comorbidities presented worse health-related quality of life than people without this background.

Calcaneal fractures: Where are we now?

This review article on the current management for calcaneal fractures discusses the advantages and disadvantages of different treatment options including the problems encountered. Controversies are described and the evidence reviewed. The management of some types of displaced intra-articular calcaneal fractures remains contentious; is there a preferred stabilisation method for each type of calcaneal fracture? How constant is the “constant fragment” in an intra-articular calcaneal fracture and what is the evidence for primary arthrodesis and what is its place in these fractures?

Open Reduction Assisted With an External Fixator and Internal Fixation With Calcaneal Locking Plate for Intra-articular Calcaneal Fractures

BACKGROUND

The extensile lateral approach (ELA) has been considered to be a standard approach for displaced intra-articular calcaneal fractures (DICF) because it provides excellent exposure and allows direct reduction of the depressed posterior facet fragment. But continuous retraction during surgery needs sufficient manpower and may cause ischemia. Failure of rigid fixation of DICF will not allow for early weight bearing and may lead to a loss of reduction. To avoid these disadvantages, this study presents open reduction assisted with an external fixator and internal fixation with a calcaneal locking plate.

METHODS

A series of 58 patients with 62 DICFs were treated over a period of 49 months. All patients were clinically and radiologically followed up with a mean follow-up of 35 (range 29-42) months. Clinical follow-up included visual analog scale (VAS), the American Orthopaedic Foot & Ankle Society (AOFAS) hindfoot score, and ability to work. Radiologic follow-up included axial and lateral radiographs and measurements of the Bohler angle and Gissane angle.

RESULTS

At the final follow-up, all fractures had healed. The mean VAS score was 2.9 (range 0 to 8, SD 1.9) and the average AOFAS score was 71 (range 55-85, SD 8.1). The mean postoperative Bohler angle immediately after the surgery was 28.3 degrees (range 13.0-44.6, SD 7.0), which decreased to 27.5 degrees (range 12.2-43.3, SD 7.0) at the final follow-up, and the mean postoperative Gissane angle after the surgery was 116.3 degrees (range 94.9-131.5, SD 9.0) which finally increased to 118.4 degrees (range 94.5-135.8, SD 9.3). No statistically significant differences regarding Bohler and Gissane angles were found between different Sanders fracture types ( P>.05).

CONCLUSION

The presented operative technique was found to provide comparable reduction of Sanders type II-IV injuries.

LEVEL OF EVIDENCE

Level III, case control study.

Radiological study of the secondary reduction effect of early functional exercise on displaced intra-articular calcaneal fractures after internal compression fixation

PURPOSE

Early post-operative exercise and weight-bearing activities are found to improve the functional recovery of patients with displaced intra-articular calcaneal fractures (DIACFs). We hypothesized that early functional exercise after surgery might have a secondary reduction effect on the subtalar joint, in particular the smaller fracture fragments that were not fixed firmly. A prospective study was conducted to verify this hypothesis.

METHODS

From December 2012 to September 2013, patients with unilateral DIACFs were enrolled and received a treatment consisting of percutaneous leverage and minimally invasive fixation. After surgery, patients in the study group started exercising on days two to three, using partial weight bearing starting week three, and full weight bearing starting week 12. Patients in the control group followed a conventional post-operative protocol of partial weight bearing after week six and full weight bearing after the bone healed. Computed tomography (CT) scanning was performed at post-operative day one, week four, week eight, and week 12 to reconstruct coronal, sagittal, and axial images, on which the maximal residual displacements of the fractures were measured. Function was evaluated using the American Orthopaedic Foot and Ankle Society (AOFAS) scoring scale at the 12th post-operative month.

RESULTS

Twenty-eight patients in the study group and 32 in the control group were followed up for more than 12 months; their data were collected and used for the final analysis. Repeated-measures analysis of variance (ANOVA) of the maximal residual displacements of the fracture measured on CT images revealed significant differences between the study and the control groups. There were interaction effects between group and time point. Except for the first time point, the differences between the groups at all studied time points were significant. In the study group, the differences between all studied time points were significant. Strong correlations were observed between the AOFAS score at post-operative month 12 and the maximal residual displacement of the fractures on the CT images at postoperative week 12.

CONCLUSIONS

Early functional exercise and weight bearing activity can smooth and shape the subtalar joint and reduce the residual displacement of the articular surface, improving functional recovery of the affected foot. Therefore, early rehabilitation functional exercise can be recommended in clinical practice.

[New techniques in the operative treatment of calcaneal fractures]

The ideal treatment of displaced intra-articular calcaneal fractures is still controversially discussed. Because of the variable fracture patterns and the vulnerable soft tissue coverage an individual treatment concept is advisable. In order to minimize wound edge necrosis associated with extended lateral approaches, selected fractures may be treated percutaneously or in a less invasive manner while controlling joint reduction via a sinus tarsi approach. Fixation in these cases is achieved with screws, intramedullary locking nails or modified plates that are slid in subcutaneously. A thorough knowledge of the three dimensional calcaneal anatomy and open reduction maneuvers is a prerequisite for good results with less invasive techniques. Early functional follow-up treatment aims at early rehabilitation independent of the kind of fixation. Peripheral fractures of the talus and calcaneus frequently result from subluxation and dislocation at the subtalar and Chopart joints. They are still regularly overlooked and result in painful arthritis if left untreated. If an exact anatomical reduction of these intra-articular fractures is impossible, resection of small fragments is indicated.

Calcaneus fractures

Assessment and treatment of calcaneal fractures have made substantial progress over the last two decades. Open reduction and stable internal fixation without joint transfixation has been established as standard therapy for most displaced intra-articular fractures with good to excellent results in more than two-thirds of patients in larger clinical series. The use of bone grafting or bone substitutes appears unnecessary in most cases. Important prognostic factors are anatomical reduction of subtalar joint congruity and the overall shape of the calcaneus. Therefore, quality of joint reduction should be reliably proved intra-operatively either with open subtalar arthroscopy or high-resolution (3D) fluoroscopy. Treatment results are adversely affected by open fractures, delayed reduction after more than 14 days, a high body mass index and smoking. The extended lateral approach respects the neurovascular supply to the heel and allows a good exposition of the fractured lateral wall, the subtalar and calcaneocuboid joints in complex fractures. In simple fracture patterns percutaneous screw fixation, supplemented by arthroscopic control if necessary, is a good alternative. Open fractures, compartment syndrome and fractures with severe soft tissue compromise are treated as emergency cases. Early, stable soft tissue coverage exploiting the full armamentarium of pedicled and free tissue transfer appears promising in improving the functional results and infection rates after open fractures. Calcaneal malunions after conservative therapy of displaced fractures are disabling conditions that can be treated successfully with a staged protocol according to the type of deformity. Treatment options include lateral wall decompression, in situ or correctional subtalar arthrodesis and calcaneal osteotomies.

External Fixation Vs Orif in the Treatment of Bilateral Calcaneum Fracture

Introduction:

The following is an original case report in the literature of a patient with post-traumatic bilateral calcaneum fracture, both type III of Sanders’ classification, that was treated, by the same surgeon, in the left foot with open reduction and internal fixation and in the right foot with closed reduction and application of an external fixator.

Case Report:

Patient 43 y.o., male, high fall accident, with bilateral calcaneum fracture, both type III of Sanders’ classification. we have chosen to treat the left foot with ORIF (Fig. 3) and the right one with closed reduction and application of an external fixator. Patient was followed up radiologically with radiographs at 2, 12 and 24 months, and clinically at 15 days, 1, 3, 6, 12, 18 and 24 months with the Maryland Foot Score, as suggested by Sanders et al.

Conclusion:

In our patient, the one year clinical outcomes post-surgery was better in the foot treated with external fixation, regardless complex fracture and the not good status of soft tissue, due to open surgical treatment and hardwere inside. Long-term clinical follow-up given best outcomes in patients treated with ORIF, due to better reduction of subtalar joint facet and Böhler’s angle.

Comparative study on three surgical techniques for intra-articular calcaneal fractures: open reduction with internal fixation using a plate, external fixation and minimally invasive surgery

Objective

To evaluate, compare and identify the surgical technique with best results for treating intra-articular calcaneal fractures, taking into account postoperative outcomes, complications and scoring in the Aofas questionnaire.

Methods

This was a retrospective study on 54 patients with fractures of the calcaneus who underwent surgery between 2002 and 2012 by means of the following techniques: (1) open reduction with extended L-shaped lateral incision and fixation with double-H plate of 3.5 mm; (2) open reduction with minimal incision lateral approach and percutaneous fixation with wires and screws; and (3) open reduction with minimal incision lateral approach and fixation with adjustable monoplanar external fixator.

Results

Patients treated using a lateral approach, with fixation using a plate had a mean Aofas score of 76 points; those treated through a minimal incision lateral approach with screw and wire fixation had a mean score of 71 points; and those treated through a minimal incision lateral approach with an external fixator had a mean score of 75 points. The three surgical techniques were shown to be effective for treating intra-articular calcaneal fractures, without any evidence that any of the techniques being superior.

Conclusion

Intra-articular calcaneal fractures are complex and their treatment should be individualized based on patient characteristics, type of fracture and the surgeon's experience with the surgical technique chosen.

Comparison Between Sinus Tarsi Approach and Extensile Lateral Approach for Treatment of Closed Displaced Intra-Articular Calcaneal Fractures: A Multicenter Prospective Study

The purpose of our investigation was to prospectively review and compare the early outcomes of Sanders II and III closed displaced intra-articular calcaneal fractures (DIACFs) in a group of patients treated by open reduction and internal fixation with plate and screws using the extended lateral approach or the sinus tarsi approach (STA). Thirty-eight patients with DIACFs were prospectively enrolled and operatively treated using either the extended lateral approach or the STA. Patients underwent a careful clinical and radiographic examination and were evaluated according to the American Orthopaedic Foot and Ankle Society score, visual analog scale, and the Foot Function Index. The results from our study showed similar clinical and radiographic outcomes between the 2 groups. In our series, Sanders II and III DIACFs were sufficiently exposed using the STA to achieve anatomic reduction and stable fixation. The STA group had a lower incidence of wound complications (p ≥ .05), the surgical procedure was faster, and the waiting time to surgery was shorter (p ≤ .05). Despite the limited number of patients and the short follow-up period, our results suggest that the STA is a useful method for the treatment of DIACFs, with a low incidence of complications and results comparable to those for patients treated using the extended lateral approach.

Outcome Determining Factors for displaced Intra-articular Calcaneal Fractures treated operatively

Introduction: Calcaneal fractures are caused by high energy trauma and mostly are intra-articular fractures. Nondisplaced intra-articular calcaneal fracture (IACF) can be treated non-operatively. However, displaced intra-articular need to be reduced and fixed anatomically to facilitate early ankle rehabilitation and minimize functional impairment. This study was done to find out the outcome of the IACF patients who underwent operative treatment.

Methods: 62 patients with IACF were selected in this study and had been followed up from June 2009 to May 2013. They were placed into two groups; the operative treated and non-operative treated groups. Bilateral ankle lateral view plain radiographs were taken for comparison of the Bohler and Gissane angles. Both groups of patients were assessed by the Maryland Foot Score (MFS) and the SF-36v2 general health survey questionnaire. The ability of the patients to perform activity of daily living (ADL) and /or return to work (RTW) was assessed as well.

Results: The operative treatment group of displaced IACF patients achieved no significant better scores in the mean MFS and SF-36v2 mean scores as compared to non operated cases. There was no difference in RTW between the 2 groups, but earlier ADL was recorded in the operated group. However, this study had found 5 associated factors which causes major effect to the patients’ outcome to treatment.

Conclusions: The patient’s compliance with post-operative rehabilitation regimen were found to be significantly related with the outcomes.

Temporising external fixation of calcaneus fractures prior to definitive plate fixation: a case series

INTRODUCTION

Surgical management of calcaneus fractures is technically demanding and has a high risk of wound complications. These fractures are traditionally managed with splinting until swelling has subsided, which can take weeks and leaves the fracture fragments displaced. We describe a novel protocol for the management of displaced intraarticular calcaneus fractures that utilises a temporising external fixator and staged conversion to plate fixation through a sinus tarsi approach. The goal of this technique was to enable earlier treatment with open reduction and internal fixation, minimise the amount of manipulation required at the time of definitive fixation and reduce the wound complication rate seen with the traditional extensile approach.

METHODS

The records of patients with displaced calcaneus fractures from 2010-2014 were reviewed retrospectively. A total of nine patients with 10 calcaneus fractures were treated using this protocol. All patients underwent ankle-spanning medial external fixation within 48 hours after injury. Patients underwent conversion to open plate fixation through a sinus tarsi approach when skin turgor had returned to normal. Time to surgery, infection rate, wound complications, radiographic alignment, and time to radiographic union were recorded.

RESULTS

The average Bohler's angle improved from 13.2 (range -2 to 34) degrees preoperatively to 34.3 (range 26 to 42) degrees postoperatively. The average time from external fixation to conversion to internal fixation was 4.8 (range 3 to 7) days. There were no immediate post-surgical complications. The average time to weight-bearing was 8.5 weeks. The average time to radiographic union was 9.5 (range 8 to 12) weeks. There were no infections or wound complications at the time of last follow-up.

CONCLUSION

Early temporising external fixation for the acute management of displaced calcaneus fractures is a safe and effective method to reduce and stabilise the foot and may decrease the time to definitive fixation. There were no complications related to the use of the external fixator in this series.

[Surgical treatment of articular fractures of the calcaneus by bone plate]

Les fractures du calcanéum sont peu fréquentes mais le plus souvent graves. Le traitement chirurgical par plaque vissée est ardemment défendu. L'objectif de notre travail rétrospectif est d’évaluer les résultats du traitement chirurgical des fractures articulaires du calcanéum à travers une série de 12 patients opérée aux service d'orthopédie du CHU Hassan II de Fès sur une durée de 3 ans, et les comparer aux données de la littérature. L’âge moyen dans notre série était de 34 ans, le geste opératoire était réalisé au 7^ème jour. Tous nos patient ont bénéficie d'une réduction à foyer ouvert avec une ostéosynthèse par plaques vissées. Le recul moyen était de 12 mois et les résultats fonctionnels ont été évaluer selon le score de Kitaoka.

Heel displaced intra-articular fractures treated with mini-calcaneal external fixator

INTRODUCTION

Treatment of displaced heel fractures is controversial; however, ORIF is widely described in the literature to be the gold-standard. Percutaneous reduction and monolateral external fixation is gaining increasing attention because it provides a good and stable reduction, and minimises soft tissue complications due to open surgery, such as deep infections and delays in wound healing. The aim of this study was to show that the new Orthofix Calcaneal Minifixator (six pins) provides a greater stability than the four-pin version to enable a better and more stable reduction, an earlier weight-bearing (30 days) and improved functional outcomes.

METHODS

A series of 69 consecutive closed heel intraarticular displaced fractures treated with the new Orthofix Calcaneal Minifixator were evaluated. Patients were assessed clinically with the Maryland Foot Score and radiologically with standard radiographs.

RESULTS

The clinical results at follow-up were excellent in 37 cases (53.6%), good in 27 (39.2%), fair in two (2.9%) and poor in three (4.3%). The mean preoperative Böhler's angle was 5.2˚ (range 0-18˚) and the mean postoperative value was 28.5˚ (range 16-38˚).

CONCLUSION

The excellent functional outcomes were despite some radiological images of imperfect posterior facet anatomical reduction and seemed to correlate with the use of a good and stable minimally-invasive surgical technique. This technique enabled early weight-bearing, minimised complications, respected the delicate biology of this anatomical site and restored the good heel volume and Böhler angle.

Balloon-assisted reduction, pin fixation and tricalcium phosphate augmentation for calcanear fracture

Two-thirds of hindfoot fractures involve the calcaneus. The best treatment for intraarticular fractures is still debated. The goal of treatment has been focussed for years on the anatomical reduction of the articular surface. Open reduction and internal fixation enables the surgeon to view the articular surface directly, but it is associated with a high rate of wound breakdown and infection. Therefore, length, width and angular replacement of the great tuberosity are actually the main parameters to consider when treating this type of fracture. This is a report of our experience of 20 patients treated with a minimally invasive technique of reduction using an inflatable bone tamp filled with tricalcium phosphate, with a mean follow-up of 12.25 months (range 7-26 months). Percutaneous K-wires were used to help reduction and to direct balloon inflation. Surgical goals were restoration of the mechanical stability for earlier full weight-bearing and patient mobilisation.

Factors affecting long-term treatment results of displaced intraarticular calcaneal fractures: a post hoc analysis of a prospective, randomized, controlled multicenter trial

OBJECTIVES

To study the factors affecting long-term treatment results of displaced intraarticular calcaneal fractures (DIACFs).

DESIGN

A post hoc analysis.

SETTINGS

Tertiary care teaching hospitals.

PATIENTS

Eight to twelve years of results from a randomized controlled multicenter trial of operative versus nonoperative treatment (n = 56) were divided into 2 groups: the superior 50% results (n = 28) and the inferior 50% results (n = 28), regardless of the treatment given. The determinant of this division was a visual analog score for pain and function.

INTERVENTIONS

The operative treatment consists of open reduction and internal fixation, whereas the nonoperative treatment consists of nonweight bearing and early range of motion exercise.

MAIN OUTCOME MEASUREMENTS

A visual analog score for pain and function, the short-form 36 (SF-36) general health outcome questionnaire, the American Orthopaedic Foot & Ankle Society (AOFAS) hindfoot scale, and Olerud-Molander score. We compared age, sex, fracture type (Sanders classification), treatment given, Böhler angle, residual articular surface step-off at healing, type of occupation, and injury insurance between the 2 groups.

RESULTS

Patients of the superior group had higher physical SF-36, AOFAS, and Olerud-Molander score than in the inferior group. Operative treatment, better Böhler angle and articular surface restoration, light labor/retirement, and absence of injury insurance were more common in the superior group. Age, sex, pretreatment Böhler angle, and fracture type were comparable in the superior and inferior groups.

CONCLUSIONS

The decision making for definitive treatment of intraarticular calcaneal fractures is multifactorial with a spectrum of results and trends such as patient demographic features that should be considered in choosing the best treatment option.

LEVEL OF EVIDENCE

Prognostic Level II. See Instructions for Authors for a complete description of levels of evidence.

Posterior facet cartilage injury in operatively treated intra-articular calcaneus fractures

BACKGROUND

Direct visualization of the posterior facet in displaced intra-articular calcaneus fractures (DIACF) frequently shows partial or full thickness cartilage delamination. This is felt to be secondary to the depression of an osteoarticular segment of the posterior facet within the calcaneal body and the subsequent contact with fracture edges as it impacts caudally. The purpose of this study was to determine the frequency of cartilage injury and if it correlates with fracture classification.

METHODS

A single surgeon prospective, observational series of 28 patients with 28 DIACFs was reviewed for patient demographic and injury data, radiographic fracture characterization, and intraoperative observation of articular injury size, depth, and location over the time period of February 2010 to December 2012. Observations were correlated with the OTA and Sanders classification systems.

RESULTS

Age, sex, mechanism of injury, and depth and location of cartilage injury were not significantly different between the 13 OTA/Sanders type 2 and 15 type 3 DIACFs evaluated in this study. Posterior facet articular cartilage delamination was found in 77% of type 2 and 100% of type 3 fractures (P = .09). Location of cartilage injury was common (56%) along the distal, lateral aspect of the posterior facet (P < .05). The percentage area of cartilage injury was significantly larger in type 3 fractures (3.1%) then type 2 (1.3%) (P < .02).

CONCLUSIONS

DIACFs had a consistent location of posterior facet articular cartilage delamination along the distal lateral aspect of the osteoarticular fragment. This lesion was larger in OTA/Sanders classification type 3 fractures compared to type 2 fractures.

LEVEL OF EVIDENCE

Level IV, prospective, observational series.

The sustentaculum tali screw fixation for the treatment of Sanders type II calcaneal fracture: A finite element analysis

Objective: In the surgery of calcaneal fracture, whether the sustentaculum tali screw should always be placed is widely controversial. The aim of this study was to explore the necessity and function of the sustentaculum tali screw placement for the treatment of Sanders type II calcaneal fracture.

Methods: The finite element analysis was used in this study. After the establishment of the finite element model of Sanders type II calcaneal fracture, the two internal fixation simulations were designed. In one model, the AO calcaneal plate was simulated on the lateral side of the calcanues with 7 screws being fixated at different position of the plate. In the other model, the calcaneus was fixated with the same AO calcaneal plate together with an additional screw being infiltrated into the sustentaculum tali. The two models were simulated under the same loading and the displacement of the fracture line and the stress distribution in the two models were calculated respectively.

Results: The maximum principal stress focused on the cortical bone of sustentaculum tali in both the models under the same loading. The displacement of the fracture line, the maximum principal stress of calcaneus and internal fixation system in the model with sustentaculum screw fixation were smaller than that in the model without sustentaculum screw fixation. The stress in the model with sustentaculum screw fixation was more dispersed.

Conclusions: The placement of sustentaculum tali screw is essential for fixation of type II calcaneal fracture to achieve the biomechanical stability.

Functional outcome and patient satisfaction after displaced intra-articular calcaneal fractures: a comparison among open, percutaneous, and nonoperative treatment

The aim of the present study was to compare the outcomes of patients with a displaced calcaneal fracture treated by open reduction and internal fixation (ORIF), percutaneous treatment, or nonoperative methods. A retrospective cohort study was conducted at a level I trauma center of patients with a displaced intra-articular calcaneal fracture treated from January 1, 2002 to December 31, 2011. The patient-reported outcome measures included the Foot Function Index, American Orthopaedic Foot and Ankle Society hindfoot scale, Short Form-36, the EQ-5D from the EuroQol Group, and a 10-point visual analog scale. Clinical data were collected from 169 patients, and questionnaires were obtained from 78 patients (18 nonoperatively, 27 ORIF, and 33 percutaneously). The late intervention rate was significantly greater in the percutaneous group (n = 18; 30%) than in the ORIF group (n = 6; 12%) or the nonoperative group (n = 8; 13%; p = .030). Significantly more disability was reported in the nonoperative group (median Foot Function Index score, 40 points) than in the ORIF group (median, 16 points; p = .010) or in the percutaneous group (median, 21 points; p = .034). In conclusion, the operatively treated patients (ORIF and percutaneous treatment) reported better functional outcome scores (Foot Function Index and American Orthopaedic Foot and Ankle Society hindfoot scale) than did the nonoperatively treated patients.

Bohler's angle's role in assessing the injury severity and functional outcome of internal fixation for displaced intra-articular calcaneal fractures: a retrospective study

Background

Controversy exits over the role of Böhler’s angle in assessing the injury severity of displaced intra-articular calcaneal fractures and predicting the functional outcome following internal fixation. This study aims to investigate whether a correlation exists between Böhler’s angle and the injury severity of displaced calcaneal fractures, and between surgical improvement of Böhler’s angle and functional outcome.

Methods

Patients treated operatively for unilateral closed displaced intra-articular calcaneal fractures from January 1, 2004 to March 31, 2008 were identified. The Böhler’s angles of both calcaneus were measured, and the measurement of the uninjured foot was used as its normal control. The difference in the value of Böhler’s angle measured preoperatively or postoperatively between the angle of the injured foot and that of the contralateral calcaneus were calculated, respectively. The change in Böhler’s angle by ratio was calculated by dividing the difference value of Böhler’s angle between bilateral calcaneus by its normal control. The injury severity was assessed according to Sanders classification. The functional outcomes were assessed using American Orthopaedic Foot & Ankle Society hindfoot scores.

Results

274 patients were included into the study with a mean follow-up duration of 71 months. According to Sanders classification, the fracture pattern included 105 type II, 121 type III and 48 type IV fractures. According to American Orthopaedic Foot & Ankle Society hindfoot scoring system, the excellent, good, fair and poor results were achieved in 104, 132, 27, and 11 patients, respectively. The preoperative Böhler’s angle, difference value of Böhler’s angle between bilateral calcaneus, and change in Böhler’s angle by ratio each has a significant correlation with Sanders classification (rs=−0.178, P=0.003; rs=−0.174, P=0.004; rs=−0.172, P=0.005, respectively), however, is not correlated with functional outcome individually. The three postoperative measurements were all found to have a significant correlation with American Orthopaedic Foot & Ankle Society hindfoot scores (rs=0.223, P<0.001; rs=0.224, P<0.001; rs=0.220, P<0.001, respectively). However, these correlations were all weak to low.

Conclusions

There was a significant correlation between preoperative Böhler’s angle and the injury severity of displaced intra-articular calcaneal fractures, but only postoperative Böhler’s angle parameters were found to have a significant correlation with the functional recovery.

Surgical treatment of displaced intra-articular calcaneal fractures: is bone grafting necessary?

Background

The aim of this retrospective study was to determine the need for bone grafting in the surgical treatment of displaced intra-articular calcaneal fractures. We reviewed 390 cases of displaced intra-articular calcaneal fractures treated with plate osteosynthesis with or without autologous iliac bone grafting, and compared outcomes and complications related to fracture stabilization.

Materials and methods

Three hundred ninety patients with displaced intra-articular calcaneal fractures that were treated with plate osteosynthesis from December 2002 to December 2010 were reviewed. Two hundred two patients (group A) were treated by osteosynthesis with autologous bone grafting, and 188 patients (group B) were treated by osteosynthesis without bone grafting. One hundred eighty-one patients with an AO type 73-C1 fracture (Sanders type II), 182 patients with an AO type 73-C2 fracture (Sanders type III), and 27 patients with an AO type 73-C3 fracture (Sanders type IV) were included in this study. Bohler’s angle, the crucial angle of Gissane, and calcaneal height in the immediate postoperative period and at the 2-year follow-up were compared. Any change in the subtalar joint status was documented and analyzed. The final outcomes of all patients were evaluated by the AOFAS Ankle–Hindfoot Scale and compared in both groups.

Results

The mean full weight-bearing time in group A (with bone grafting) was significantly lower (median 6.2 months, range 2.8–9.2 months) than that in group B (without bone grafting; median 9.8 months, range 6.8–12.2 months). The immediate-postoperative Bohler’s angle and that at the 2-year follow-up were significantly higher in group A. The loss of Bohler’s angle after 2 years was significantly lower in group A (mean 3.5°; 95 % CI 0.8°–6.2°) than in group B (mean 6.2°; 95 % CI 1.0°–11.2°). The average change in the crucial angle and the average change in calcaneal height were not statistically significant for either group. The infection rate in the bone grafting group was higher, though statistically insignificantly so, than in the nongrafting group (8.3 vs. 6.3 %). No significant difference was found between the groups in terms of the rates of good reduction, postoperative osteoarthritis, and subtalar fusion. Regarding the efficacy outcomes, the mean AOFAS score was lower (mean 76.4 points; 95 % CI 65.8–82.9 points) in group A than in group B (mean, 81.6 points; 95 % CI, 72.3–88.8 points), but this difference was not significant (p > 0.05).

Conclusions

Bohler’s angle showed improved restoration and the patients returned to full weight-bearing earlier when bone grafting was used in the treatment of intra-articular calcaneal fracture. However, the functional outcomes and complication rates of both groups were similar.

Chance fracture of the talus and calcaneum

Combined talus and calcaneum fractures are rare in themselves. We report the case of an unusual fracture pattern of the talus and calcaneum in an otherwise, healthy 17-year-old male. Plain radiographic images of the foot revealed a fracture through the neck of the talus. Additional computed tomography imaging showed the fracture line extending through the talus and entire calcaneum. The fracture was open and associated with rupture of the tibialis anterior and extensor hallucis longus tendons. The patient underwent debridement with open reduction and internal fixation of the talar component of the fracture using 2 screws. The calcaneal component was treated conservatively. The soft tissue injuries to the 2 tendons were also repaired. The patient made good progress with this management.

A biomechanical comparison of conventional versus an anatomic plate and compression bolts for fixation of intra-articular calcaneal fractures

The purpose of this study was to compare the biomechanical stability obtained by using our technique featured an anatomical plate and compression bolts versus that of the conventional anatomic plate and cancellous screws in the fixation of intraarticular calcaneal fractures. Eighteen fresh frozen lower limbs of cadavers were used to create a reproductive Sanders type-III calcaneal fracture model by using osteotomy. The calcaneus fractures were randomly selected to be fixed either using our anatomical plate and compression bolts or conventional anatomic plate and cancellous screws. Reduction of fracture was evaluated through X radiographs. Each calcaneus was successively loaded at a frequency of 1 Hz for 1000 cycles through the talus using an increasing axial force 20 N to 200 N and 20 N to 700 N, representing the partial weight bearing and full weight bearing, respectively, and then the specimens were loaded to failure. Data extracted from the mechanical testing machine were recorded and used to test for difference in the results with the Wilcoxon signed rank test. No significant difference was found between our fixation technique and conventional technique in displacement during 20-200 N cyclic loading (P=0.06), while the anatomical plate and compression bolts showed a great lower irreversible deformation during 20-700 N cyclic loading (P=0.008). The load achieved at loss of fixation of the constructs for the two groups had significant difference: anatomic plate and compression bolts at 3839.6±152.4 N and anatomic plate and cancellous screws at 3087.3±58.9 N (P=0.008). There was no significant difference between the ultimate displacements. Our technique featured anatomical plate and compression bolts for calcaneus fracture fixation was demonstrated to provide biomechanical stability as good as or better than the conventional anatomic plate and cancellous screws under the axial loading. The study supports the mechanical viability of using our plate and compression bolts for the fixation of calcaneal fracture.

Calcaneal fractures: update on current treatments

Calcaneal fractures represent 2% of all fractures and account for approximately 60% of all tarsal injuries. Motor vehicle collisions and falls are the major causes of these large force compression injuries, causing widening of the heel, loss of heel height, and articular surface displacement. A correlation has been shown between restoration of normal anatomy and satisfactory functional outcome. Once the basic principles of calcaneal fractures are understood, including the anatomy, the radiographic findings, and the challenges that these complicated fractures present, the physician can then be ready with the armamentarium that allows for a patient-specific and injury-specific plan.

Treatment of displaced intraarticular calcaneal fractures with or without bone grafts: A systematic review of the literature

BACKGROUND

The necessity of bone grafts in the treatment of intraarticular calcaneal fractures continues to be one of the most debated topics in foot and ankle surgery. The purpose of this study was to determine whether there are sufficient objective cumulative data in the literature to compare the two methods and if the bone graft was needed in surgical treatment of intraarticular calcaneal fractures.

MATERIALS AND METHODS

A comprehensive search of all relevant articles from 1990 to 2010 was conducted. Two reviewers evaluated each study to determine its suitability for inclusion and collected the data of interest. Meta-analytic pooling of group results across studies was performed for the two treatment methods.

RESULTS

The systematic review identified 32 primary studies with 1281 fractures, which contained 4 comparative studies, 13 with bone grafts, and 15 without bone grafts in treatment methods. The infection rate in bone graft group was higher through statistically insignificant than in non-graft group (8.3% vs. 6.3%) No significant difference was found between good reduction rate, postoperative osteoarthritis rate, and subtalar fusion rate. The average full weight-bearing time in bone graft group was significantly lower (5.4 months) than in non-graft group (10.5 months). The mean postoperative Böhler's angle was significantly higher in bone graft group (lose due to collapse was significancy less). For the efficacy outcomes, the bone graft group had a lower American Orthopaedic Foot and Ankle Society Score (AOFAS) (71.4 points vs. 80.5 points) but a higher Creighton score (89.9 points vs. 81.0 points) compared with non-graft group. Pooled mean results showed 35% of the patients in bone graft group had an excellent result, 40% had a good result, 21% had a fair result, and 4% had a poor result. In the non-graft group, the corresponding values were 34, 42, 14, and 10%, respectively.

CONCLUSIONS

The operative treatment of intraarticular calcaneal fractures with bone grafts could restore the Böhler's angle better and the patients could return to full weight bearing earlier. However, the functional and efficacy outcomes appear to be similar between the two treatment groups. There were more joint depression and comminuted fractures in the bone graft group, and the mean followup time was shorter. Large sample comparative studies are still needed.

Subjective results after surgical treatment for displaced intra-articular calcaneal fractures

We present a retrospective study investigating the results of the subjective assessment of displaced intra-articular calcaneal fractures in a selected cohort of 42 patients treated operatively, with a follow-up duration of at least 3 years. The adjusted American Orthopaedic Foot and Ankle Society questionnaire, Foot Function Index, and visual analog scale were used to quantify the subjective evaluations. Our hypothesis was that good subjective results could be predicted and obtained in patients with specific characteristics if anatomic reduction of the fracture was achieved. The results of the study confirmed our hypothesis. A number of specific subgroup analyses were undertaken. The study confirmed that Böhler angle restoration and the quality of reduction of the subtalar joint facet are important prognostic factors related to the outcome. In contrast, gender and Sanders type had less influence at the intermediate-term follow-up results. The main weaknesses of the present study included its retrospective nature, the lack of a control group managed nonoperatively for comparison, and the small sample size. Moreover, the operating surgeon performed the radiographic measurement and categorized the quality of the surgical reconstruction.

Interobserver reliability and intraobserver reproducibility of three radiological classification systems for intra-articular calcaneal fractures

BACKGROUND

The management of intra-articular calcaneal fractures is difficult. One aspect for successful management is the use of a reliable and reproducible fracture classification system (FCS). The purpose of this study was to evaluate the interobserver reliability and intraobserver reproducibility of Letournel, Sanders, and Zwipp classification systems on CT scan and the Bohler's angle measurement on plain X-ray. Furthermore, we studied if the addition of a CT scan to the plain X-ray influenced the evaluation of fracture extension to the calcaneocuboid joint.

METHODS

The CT scan and plain X-ray images of 51 intra-articular calcaneal fractures were evaluated two times by three observers (two radiologists and one orthopedic surgeon) within a 5-month interval. The interobserver reliability was measured using the Fleiss kappa while the intraobserver reproducibility was measured using the Cohen's kappa.

RESULTS

The mean kappa values for the interobserver reliability and intraobserver reproducibility of the Sanders classification were 0.25 and 0.39, respectively, of Zwipp classification were 0.24 and 0.16, respectively, while those of the Letournel classification were 0.50 and 0.42, respectively. For the Böhler's angle, the mean kappa values for the interobserver reliability and intraobserver reproducibility were 0.34 and 0.32, respectively. The addition of CT scan images to plain X-ray found a higher incidence of calcaneocuboid joint involvement.

CONCLUSION

Clinicians should be aware of the limitation regarding the interobserver reliability and intraobserver reproducibility of the Letournel, Sanders and Zwipp classification systems for calcaneal fractures. Future studies should attempt to improve the present classification systems.

Hindfoot arthrodesis for management of bone loss following calcaneus fractures and nonunions

Massive bone loss following calcaneal fractures is a challenging condition to treat, especially if nonunion is present. Meticulous preoperative examination and imaging are crucial for accurate preoperative planning. If performed, successful outcomes can be achieved with the strategies outlined in this article.

Comparison of surgical outcomes of intra-articular calcaneal fractures by age

BACKGROUND

Internal fixation is an accepted treatment for displaced fractures of the calcaneus. Operative intervention in older patients, however, is traditionally discouraged in the literature. The purpose of this study was to compare the outcomes of internal fixation of intra-articular fractures of the calcaneus on the basis of patient age.

METHODS

One hundred and seventy-five patients (191 fractures) who underwent internal fixation between 1992 and 2007 for a displaced, intra-articular calcaneal fracture were identified. The American Society of Anesthesiologists score, the fracture pattern, and the mechanism of injury were recorded. Each patient was contacted to complete a follow-up survey from which clinical outcome scores were calculated. One hundred and forty-six patients with 158 fractures were available for follow-up and were divided into two groups for comparison. Group I consisted of 108 fractures in patients who were less than fifty years old. Group II was composed of fractures in fifty patients who were fifty years of age or older.

RESULTS

The mean duration of follow-up was 8.98 years. The average patient age was thirty-six years for Group I and fifty-eight years for Group II. The average adjusted American Orthopaedic Foot & Ankle Society score was 64 for Group I and 75 for Group II. The mean calcaneal fracture scoring system score was 66 for Group I, and 76 for Group II. Similarly, the average Foot Function Index was 24 and 15 for Groups I and II, respectively. Each clinical outcome measure suggests significantly better outcomes for Group II as compared with Group I (all p < 0.05). Overall, the complication rates were similar between groups. Conversion to subtalar fusion was 15% for Group I and 8% for Group II.

CONCLUSIONS

In this series, outcomes of older patients are at least equivalent to those of younger patients undergoing internal fixation for an intra-articular calcaneal fracture. Operative intervention appears to be a reasonable option for displaced calcaneal fractures in older patients. Physiologic age should be considered when evaluating older patients, and individualized treatment plans remain critical because patients with low physical demands or who have medical complications may be better candidates for nonoperative treatment. Prospective studies are needed in this area.

Early weight bearing of calcaneal fractures fixated with locked plates: a radiographic review

The use of locked plate technology in the calcaneus has been shown in previous studies to provide greater stability than that of nonlocking plates. The purpose of this study is to examine the radiographic effects of early weight bearing of calcaneal fractures repaired with locked plating. A retrospective review was performed of 17 calcaneal fractures repaired with locked plate fixation over a 2-year period. A chart and radiographic review evaluated the time the patient was kept non-weight bearing and the Bohler's angle at first postoperative visit and final postoperative visit. Change in Bohler's angle was used to evaluate for bone subsidence. Standard reduction and fixation techniques were performed to realign all components of the intra-articular calcaneal fracture using a titanium locking calcaneal fracture plate. Patients returned for follow-up examinations postoperatively and underwent radiographic examination. A weight-bearing short fracture walker boot was applied, and the patient began protected weight bearing at approximately 4 to 5 weeks. The charts and radiographs of 17 intra-articular fractures were reviewed. The average Bohler's angle at first postoperative visit was 30.12° in comparison to the average at final visit of 28.47 °. The average time the patient was kept non-weight bearing after the procedure was 4.8 weeks. The average time of follow-up was 237.7 days. There were no cases of significant bone subsidence or collapse noted. Calcaneal fractures can have significant morbidity associated with the injury and its care. This study examined early weight bearing of calcaneal fractures fixated with locked plating. Under radiographic review, there was no significant loss of calcaneal height, joint reduction, or fixation stability noted. These results are thought to be due to the inherent stability of the locked plate construct.