Congenital Vertical Talus Research Articles

Minimally Invasive Method for Treatment of Syndromic Congenital Vertical Talus Deformity in Children.

Congenital Vertical Talus (CVT) is a rare form of rigid flatfoot commonly seen in patients with underlying neurologic syndromes. This study aims to evaluate the long-term effectiveness of the minimally invasive method for correcting CVT deformity in a large cohort of syndromic patients. A single author recorded preoperative, 2-week postoperative, 1-year postoperative, and most recent radiographic measurements and complications for 25 patients treated with the minimally invasive method from 2006 to 2021. Patient-Reported Outcomes Measurement Information System (PROMIS) questionnaires were administered for 12 patients after January 1, 2015, when the institution began collecting PROMIS in all orthopaedic patients. Average follow-up was 55 months (13-111); 18 patients had minimum 24-month follow-up. Forty feet in 25 patients were analyzed. The average preoperative lateral talar axis-first metatarsal base angle (TAMBA) was 68.7 ± 21.3 vs 12.1 ± 8.9 after initial surgical intervention (P < .0001). There was a statistically significant increase in the lateral TAMBA between the initial postoperative and final follow-up visits (13.0 vs 21.6, P = .02). Radiographic recurrence of talonavicular deformity was noted in 12 feet (30.9%); 7 (15.55%) required corrective surgery. Larger preoperative lateral TAMBA was predictive of recurrence. Notably, patients with arthrogryposis experienced higher radiographic recurrence than other syndromic patients (45.0% vs 14.3%, P = .0384). PROMIS scores were within population norms. The study suggests that less than one-third of syndromic CVT patients experienced a radiographic recurrence of talonavicular deformity, with 15% requiring further surgical intervention at an average of 55 months following the initial procedure. A higher incidence of radiographic recurrence occurred in patients with distal arthrogryposis. These findings, along with the satisfactory patient-reported outcomes, suggest that the minimally invasive technique is an effective treatment method for syndromic CVT, underscoring the necessity for clinicians to provide detailed prognoses and consider more intensive follow-up for those at higher risk.

Defining and Differentiating Congenital Vertical Talus and Congenital Oblique Talus: It's Not Primarily About the Talus.

Congenital vertical talus (CVT) and congenital oblique talus (COT) are rocker-bottom foot deformities that have similar names and no objective definitions. This has led to confusion for practitioners, as well as scientific challenges for researchers. Our goal was to provide objective radiographic criteria to define and differentiate CVT and COT. We evaluated 62 pairs of maximum dorsiflexion and plantar flexion lateral radiographs of infant feet that had been clinically diagnosed with CVT. The dorsiflexion tibiotalar angle, the plantar flexion talus-first metatarsal angle, and the plantar flexion foot center of rotation of angulation (foot-CORA) were measured using transparent overlay tools. Freehand measurements were made on a subset of 10 pairs of radiographs to confirm clinical applicability. Nine contralateral pairs of radiographs of normal feet were measured for comparison. Specific values for the radiographic measurements were identified that, together, reliably differentiated the shapes of rocker-bottom feet with CVT, COT, and flexible flatfoot with a short tendo-Achilles (FFF-STA), as well as the shape of the normal foot. More severe and rigid rocker-bottom foot deformities were diagnosed with CVT. Less severe and more flexible deformities were diagnosed with COT. CVT, COT, FFF-STA, and normal feet can be reliably differentiated using 2 angular measurements and 1 bone position measurement on dorsiflexion and plantar flexion lateral radiographs. Our data indicated that the differentiation of CVT and COT is based primarily on the rigidity of the navicular dislocation rather than the verticality of the talus. The data further supported the proposition that COT is a foot deformity along a spectrum of valgus/eversion deformities of the hindfoot that requires early treatment. Application of these diagnostic criteria should lead to clinical studies that identify a specific treatment, treatment outcome, and prognosis for each deformity. Diagnostic Level II. See Instructions for Authors for a complete description of levels of evidence.

Response to Commentary on "Relapsed Congenital Vertical Talus Deformity: Outcomes of a Modified Minimally Invasive Method".

Response to Commentary on "Relapsed Congenital Vertical Talus Deformity: Outcomes of a Modified Minimally Invasive Method".

Clarification on the distinction between congenital vertical talus and oblique talus diagnosis in the intrauterine period

Clarification on the distinction between congenital vertical talus and oblique talus diagnosis in the intrauterine period

Congenital Vertical Talus

The talus is a very important bone in the foot skeleton. It represents the connection between the leg bones and the other bones of the foot. Its normal anatomy is correlated to its good function. The bone may be exposed to congenital anatomical variations and deformities, including congenital vertical talus (CVT), which affect the shape and movements of the foot. Although CVT is rare, it is important to keep in mind the possibility of CVT when examining a foot defect in newborns to avoid neglecting its treatment and subsequent complications and to avoid extensive surgical intervention.

Congenital Vertical Talus: An Updated Review.

Congenital vertical talus (CVT) is the presence of rigid flatfoot deformity characterized by hindfoot valgus and equinus. This foot deformity is associated with midfoot dorsiflexion and forefoot abduction due to a fixed dorsal dislocation of the navicular relative to the head of the talus. It is often underdiagnosed in children due to its similarity to other disorders of the foot. Misdiagnosis of CVT and subsequent failure to address it leads to significant disability and pain. While past surgical management consisted of soft tissue releases that produced varying efficacy, current management of CVT consists of serial casting and minimally invasive procedures that have yielded excellent long-term outcomes. This review provides insight into the diagnosis and treatment of CVT with the intention of highlighting the importance of promptness of intervention to prevent further disability.

Relapsed Congenital Vertical Talus Deformity: Outcomes of a Modified Minimally Invasive Method.

Relapsed Congenital Vertical Talus Deformity: Outcomes of a Modified Minimally Invasive Method.

Author response to comment on Cummings JL et al.: 'Untreated congenital vertical talus deformity in walking age: minimally invasive method works'.

Author response to comment on Cummings JL et al.: 'Untreated congenital vertical talus deformity in walking age: minimally invasive method works'.

Comment on Cummings JL et al.: 'Untreated congenital vertical talus deformity in walking age: minimally invasive method works'.

Comment on Cummings JL et al.: 'Untreated congenital vertical talus deformity in walking age: minimally invasive method works'.

Ankle and Foot Deformities in Children.

Ankle and foot deformity is one of the most common musculoskeletal disorders in children and a leading cause of functional impairment and diminished quality of life when not treated. A spectrum of conditions may produce foot and ankle deformities, with congenital disorders the most frequent cause, followed by acquired conditions. Congenital disorders include congenital talipes equinovarus or congenital clubfoot, metatarsus adductus, skewfoot, congenital vertical talus, and tarsal coalition.Some of these deformities are frequent and easily diagnosed based on clinical features, but clinical overlap between pathologies can be challenging. Thus imaging plays a paramount role in evaluating these patients. Radiographs are the first imaging modality of choice, but they may not be sufficient in infants due to the lack of ossification of the tarsal bones. Ultrasonography allows not only a detailed visualization of the cartilaginous structures but also permits a dynamic study of the foot and ankle. Computed tomography may be necessary in certain conditions such as tarsal coalitions.

Results of treatment of congenital vertical talus by the Dobbs method

Congenital vertical talus is a rare foot deformity. The hindfoot is valgus and equinus, the midfoot is dorsiflexed and forefoot is abducted due to a fixed dorsal dislocation of the navicular on the head of the talus and the cuboid on the anterior part of the calcaneus. The epidemiology and etiology of vertical talus is unknown. Dobbs et al. (J Bone Joint Surg Am 88(6):1192–200, 2006) described a minimally invasive alternative which allowed to avoid the need for extensive soft tissue release procedures in treatment of congenital vertical talus. Eleven congenital vertical talus feet (group 5 according to Hamanishi) in eight children (four boys and four girls) constituted the study material. Upon the diagnosis, the patients’ age ranged from 5 to 26 months old (the mean – 14.6). The treatment involved serial manipulation and casting according to the reverse Ponseti method (from 4 to 7 casts) followed by a minimally invasive approach consisting in temporary stabilization of the talonavicular joint with the use of K-wire and Achilles tenotomy according to the Dobbs technique. Then patients continued the shoe and bar program for 2 years. The X-ray measurements on lateral radiographic included the talocalcaneal angle, tibiotalar angle and talar axis—first metatarsal base angle whereas AP radiographic images—the talocalcaneal angle and talar axis—first metatarsal angle. The Wilcoxon test was used to compare dependent variables. The final clinical assessment made during the last follow-up (the mean: 35.8 months, the range: 25–52) revealed that neutral position of the foot and normal range of motion were observed in ten cases and recurrence of foot deformity in one case. The last X-ray examination showed normalization all of radiological parameters, except for one case, and examined parameters were statistically significant. The minimally invasive technique described by Dobbs should be the first option in treatment of congenital vertical talus. It allows to reduce the talonavicular joint, brings good results and preserves foot mobility. The attention should be put on early diagnosis.

Prenatal ultrasound diagnosis of congenital vertical talus

Objective This study aimed to analyze the ultrasound characteristics of fetal congenital vertical talus (CVT) to provide a detailed basis for the prenatal diagnosis of CVT. Methods We retrospectively analyzed the ultrasonographic findings of fetuses with CVT confirmed by X-ray, surgery, or autopsy from 2010 to 2020. Clinical characteristics and ultrasonographic findings of CVT, including foot morphology, ossification center of the calcaneus and talus, associated deformities, and chromosomal test results, were recorded. Results Thirteen patients diagnosed with CVT by prenatal ultrasound were confirmed postpartum. Nine cases were bilateral, and four were unilateral. Under two-dimensional ultrasound, 13/13 cases had abnormal foot morphology, and 10 of 13 cases (76.9%) showed that the ossification center of the talus moved downward, and the calcaneus moved laterally. Under three-dimensional ultrasound, 11 cases (84.6%) presented a “rocking chair” appearance, and two cases did not obtain satisfactory three-dimensional image due to oligohydramnios and fetal position. In this group of cases, two cases (15.4%) were isolated CVT, and the other 11 cases (84.6%) were complicated with other abnormalities. Eleven cases of non-isolated CVT and 1 case of isolated CVT were induced, and another patient with isolated CVT had undergone postnatal surgery, which had been followed up for 8 years and recovered well. Conclusions The combination of fetal foot morphology, ossification center position of the calcaneus and talus, and three-dimensional ultrasound can provide a reliable diagnosis of CVT. Furthermore, we should pay more attention to the evaluation of other systemic and chromosomal abnormalities in CVT cases.

Comparison of Different Surgical Techniques in Correction of Congenital Vertical Talus Deformity: A Systematic Review and Meta-Analysis of the Literature.

Congenital Vertical Talus (CVT) is a rare form of congenital rigid flatfoot. Numerous surgical techniques have been developed over the years in an attempt to definitively correct this deformity. We performed a systematic review and meta-analysis of the existing literature to compare the outcomes of children with CVT treated with different methods. A detailed systematic search was conducted in accordance with PRISMA guidelines. Radiographic recurrence of the deformity, reoperation rate, ankle arc of motion, and clinical scoring was compared between the following 5 methods: Two-Stage Coleman-Stelling Technique, Direct Medial Approach, Single-Stage Dorsal (Seimon) Approach, Cincinnati Incision, and Dobbs Method. Meta-analyses of proportions were performed, and data were pooled through a random effects model using the DerSimonian and Laird approach. Heterogeneity was assessed using I^2 statistics. The authors used a modified version of the Adelaar scoring system to assess clinical outcomes. An alpha of 0.05 was used for all statistical analysis. Thirty-one studies (580 feet) met the inclusion criteria. The reported incidence of radiographic recurrence of talonavicular subluxation was 19.3%, with 7.8% requiring reoperation. Radiographic recurrence of the deformity was highest in the children treated with the direct medial approach (29.3%) and lowest in the Single-Stage Dorsal Approach cohort (11%) ( P <0.05). The reoperation rate was significantly lower in the Single-Stage Dorsal Approach cohort (2%) compared with all other methods ( P <0.05). There was no significant difference in the reoperation rates between the other methods. The highest clinical score was seen in the Dobbs Method cohort (8.36), followed by the group treated with the Single-Stage Dorsal Approach (7.81). The Dobbs Method resulted in the largest ankle arc of motion. We found the lowest radiographic recurrence and reoperation rates in the Single-Stage Dorsal Approach cohort, while the highest rate of radiographic recurrence was seen in those treated with the Direct Medial Approach. The Dobbs Method results in higher clinical scores and ankle arc of motion. Future long-term studies focusing on patient-reported outcomes are needed. Level III.

Corrective bandages and daily manipulations for treatment of congenital vertical talus: a thirteen year follow-up

PurposeTo analyze the results of a conservative method for treating congenital vertical talus in children with early start and to know in which cases surgical treatment was needed.MethodsA retrospective analysis of all children diagnosed with idiopathic vertical talus was carried out during the years 2008–2021. Thirty-two children (46 feet) were finally included. Children were treated with serial manipulations, muscle stimulation, and corrective bandages. Age at the time of initiation of treatment, duration of treatment, and correction or not of the deformity without surgical intervention were recorded as variables of interest. The talocalcaneal angle, TAMBA, and ankle range of motion were measured before treatment, after treatment, and at the end of the follow-up period. Statistics decision tree was used to determine which variable best discriminated whether the patient needed surgery. To complement the tree diagram, a two-step cluster analysis was carried out.ResultsAfter treatment, TAMBA and talocalcaneal angle changed from “vertical” to “oblique” category in 45 and 37 feet, respectively. The pathological dorsal flexion of the ankle changed to normal in 37 feet and ankle plantar flexion was normal in 46 feet. These variables showed significant changes between the three measurement moments. The results of the statistics decision tree and cluster analysis indicate that “No surgery” was associated with an age equal to or lower than one week when treatment was started, and with an ankle plantar flexion range of motion lower than 36°.ConclusionsThe beginning of this conservative treatment in the first week of life and having a plantar flexion of the ankle lower than 36° were related to the success of the treatment without surgery.

Congenital Oblique Talus Spontaneous Reduction-Case Report

Congenital oblique talus is a very rare condition which presents as an isolated deformity or in association with neuromuscular and/or genetic disorders. Pathoanatomically the deformity shows a dislocated talonavicular and subtalar joint. The ethiology and pathogenesis are still not finally determined, although in some cases a genetic basis has been identified. The clinical picture is that of a flat longitudinal arch. Clinical diagnosis is confirmed by plain radiographic imaging of anteroposterior and lateral views. Congenital oblique talus should not be confused with other deformities of the foot, such as congenital vertical talus, which with stress view X-Ray can be reduced. The object of treatment of congenital oblique talus is to restore a normal anatomical relationship between the talus, navicular bone and calcaneus. Good early results of modified non-operative treatment using serial manipulations, physiotherapy, special shoes or cast treatment may change therapeutic concepts.

Congenital vertical talus deformity in children with distal arthrogryposis: good clinical outcomes despite high rate of residual radiographic deformity.

Patients with a diagnosis of arthrogryposis often present with various orthopedic conditions, one of which is congenital vertical talus (CVT). This is the first study of this specific subset of syndromic patients to evaluate the medium-term outcomes of CVT correction using the minimally invasive Dobbs method. All patients with vertical talus and distal arthrogryposis who received treatment at our institution between January 2006 and June 2021 were identified. Radiographs, clinical notes and Patient-Reported Outcome Measurement Information System (PROMIS) scores (when available) were retrospectively reviewed. An alpha of 0.05 was used for all statistical analyses. In total 12 patients (19 feet) met all inclusion criteria and were included in the final analysis. By the time of the most recent visit, the average lateral Talar-Axis First Metatarsal Base Angle of the entire cohort increased from 13.73 ± 9.75 degrees 2 weeks postoperatively to 28.75 ± 23.73 degrees ( P = 0.0076). Radiographic recurrence of the talonavicular deformity was seen in nine feet (47.4%), 4 (21.1%) of which required additional unplanned surgery, The average PROMIS scores of the entire cohort in the pain interference, mobility and peer relationship domains were 48.97 ± 9.56, 47.9 ± 11.60 and 52.87 ± 8.31, respectively. Despite a higher radiographic recurrence rate of talonavicular deformity in this specific subset of syndromic patients, these patients still report PROMIS scores near the population average in the pain interference, mobility and peer relationships domains. We believe that the minimally invasive Dobbs method should be recommended as the first-line treatment method for these patients. Level of evidence: Level III.

Relapsed Congenital Vertical Talus Deformity: Outcomes of a Modified Minimally Invasive Method.

To date, there is little literature that describes the optimal management for recurrent talonavicular subluxation after an initial attempt at surgical correction in children with congenital vertical talus (CVT). The purpose of this study is to evaluate the outcomes of a modified minimally invasive technique for the management of recurrent talonavicular subluxation in patients with CVT who have previously undergone at least 1 attempt at surgical correction. International Classification of Diseases codes were used to identify all patients with recurrent CVT deformity treated at our institution between 2006 and 2021. Retrospective chart review, including radiographic measurements of talocalcaneal and talar axis-first metatarsal base angles (TAMBA), was performed. Complications including recurrent talonavicular subluxation (lateral TAMBA >30 degrees) and hindfoot valgus (Anteroposterior talocalcaneal >40 degrees) were recorded. All statistical analysis was performed using an alpha of 0.05. Seventeen patients (24 feet) met all inclusion criteria, 9 (52.9%) of whom had underlying neurological syndromes. The average age at repeat treatment initiation was 26±17 months (range: 7 to 60 mo). Talonavicular reduction was achieved in all patients as evidenced by an average of 24.6 degrees and 54.9 degrees of correction in the Anteroposterior and lateral TAMBA, respectively. Radiographic recurrence of the talonavicular deformity was seen in 12 feet (50.0%). Six (25.0%) of the feet in 4 patients required a revision surgery, all of which occurred in patients with underlying syndromes ( P =0.02). The average patient-reported outcome measurement information system scores in the pain interference, mobility, and peer relations domains were 44.5±7.7, 44.1±13.5, and 54.8±9.9, respectively. Our midterm results suggest that many cases of recurrent CVT can be effectively managed through a modified minimally invasive revision surgery consistent with what has been described by Dobbs and colleagues for initial treatment. Further prospective studies with longer-term follow-up are warranted to confirm these findings. Level III.

Congenital vertical talus open reduction surgery: Technique description and our twenty-years personal experience

Congenital vertical talus foot is a complex deformity, characterized by a dislocation of the talus-calcanear navicular joint. It is a rare form of congenital flat foot, where the hindfoot is valgus and equine, the midfoot dorsiflexed and the forefoot abducted. Regardless of the type of classification, the therapeutic approach and prognosis must take into account the functionality and motility of the foot. Initial treatment is manipulative. After 3 months of age, it is possible to think about soft tissue surgery. In this study, we present congenital vertical talus feet treated at the Pediatric Orthopedics Department of SS. Antonio Biagio and Cesare Arrigo Children's Hospital of Alessandria from 1995 to 2022. All 8 patients (12 feet) underwent through the surgical operation technique of open reduction described by Tachdjian and further reviewed and subjected to the American Orthopaedic Foot and Ankle Society (AOFAS) Ankle-Hindfoot Score. The mean follow up is 13 years. Global functional result was good and surgery allowed the growth of the foot, which would otherwise be blocked by an ax that is the vertical talus. Questioned remotely, all patients perform sporting activities and wear normal footwear.

Understanding congenital vertical talus

Congenital vertical talus (CVT) is a rare foot deformity that presents with a rigid flat foot at birth. CVT can present as an isolated abnormality in the newborn, however in at least 50% of cases in association with other conditions. Full neuro-axial imaging is essential to detect any associated neurologic problems. Radiographs of the foot, including forced plantar and dorsiflexion laterals, are diagnostic. Gold standard modern treatment uses the Dobbs method of serial manipulation and casting with minimally-invasive stabilization of the talonavicular joint and Achilles tendon tenotomy.

P.221 Improvement in respiratory and bulbar function in two patients with SMALED2B

Pathogenic variants in <i>BICD2</i> are implicated in lower extremity predominant spinal muscular atrophy type 2B (SMALED2B). Here we report two patients with SMALED2B due to <i>de novo</i> pathogenic variants in <i>BICD2</i>. The first patient had poor fetal movement. She was born full term and noted to have arthrogryposis, low birth weight, dysmorphic features, bilateral femur fractures and hip dislocations, congenital vertical talus and scoliosis. Electrodiagnostic studies showed chronic axonal motor neuropathy. A muscle biopsy of the gastrocnemius showed extensive fibrofatty replacement. Electron microscopy of the sural nerve showed axonal degeneration and regeneration. Brain MRI showed mild cerebellar atrophy, enlargement of the frontal horns, and reduced size of the optic nerves and chiasm. Additional features included intellectual disability, kyphosis, tremors, choreiform movements and exotropia. Whole exome sequencing (WES) revealed a c.2080C>T variant in <i>BICD2</i>. The second patient had arthrogryposis and polyhydramnios identified prenatally. He was born at 33 weeks and noted to have micrognathia, a large anterior fontanelle and bilateral femur fractures. Electrodiagnostic studies showed low compound muscle action potential amplitudes, likely due to diffuse muscle hypoplasia. MRI of musculature and brain showed near complete absence of skeletal muscles in the extremities and bifrontal white matter volume loss. Additional features included intellectual disability, facial weakness, ptosis, bilateral undescended testes, conductive hearing loss and scoliosis. WES identified a c.1636_1638del variant in <i>BICD2</i>. Both patients had gastrostomy and tracheostomy placement shortly after birth. Patient 1 is now 20 years old. She now only requires nocturnal BiPAP and feeds orally with supplementation via gastrojejunostomy tube. Patient 2 is 7 years old and has not required assisted ventilation since he was 5, but is still fed via gastrostomy. Despite severe <i>in utero</i> presentations, these patients demonstrate that the long-term clinical course for patients with SMALED2B may be more favorable than previously reported.