Recurrent club-foot deformity following previous soft-tissue release

Surgical Management of the Undercorrected and Overcorrected Severe Club Foot Deformity

Managing complications of clubfoot deformities can be very challenging. Some patients present with recurrent clubfoot and residual symptoms, and some present with overcorrection leading to a severe complex flatfoot deformity. Both can lead to long-term degenerative changes of the foot and ankle joints owing to deformity caused by unbalanced loading. This article only focuses on severe complications caused by recurrence and overcorrection in both children and adult patients.

Updates in the Surgical Management of Recurrent Clubfoot Deformity: a Scoping Review

PURPOSE OF REVIEW

This article focuses on the current advances in surgical management for clubfoot deformity, supported by up-to-date longitudinal studies on each approach.

RECENT FINDINGS

Long-term analysis following primary and repeated soft tissue releases has demonstrated good results in young patients with low relapse rates. Tibialis anterior transfer following the Ponseti method shows no difference in long-term pedographic analysis in comparison to the Ponseti method alone. Furthermore, tibialis anterior transfer following surgical relapses provides good long-term results with improved correction in talus-first metatarsal angle. Bony osteotomies may also play a role in addressing surgical relapses in older children. However, talar neck osteotomy may result in avascular necrosis of the talar dome. Hexapod external fixation may be considered by experienced surgeons to correct rigid clubfoot deformities in older patients with good long-term results and drastic improvements in pain perception. Long-term analysis of anterior distal tibial epiphysiodesis (ADTE) for recurrent equinus deformity following surgical correction has demonstrated statistical improvements in the anterior distal tibial angle (ADTA) and ankle dorsiflexion. Talectomy and naviculectomy are rarely used in today's practice as long-term studies have demonstrated high relapse rates and residual pain impeding patient mobility. Surgical correction following failure of the conservative approaches can be implemented to achieve full correction in clubfoot deformity. It is difficult to achieve a plantigrade feet with pain-free gait with repeated surgical interventions. Therefore, proper choice of the initial surgical technique is essential for achieving satisfactory long-term outcomes.

Results of talectomy for inveterate or recurrent clubfoot

INTRODUCTION

The aim of the present study was to define indications for talectomy in congenital paralytic, dystrophic or idiopathic, inveterate or recurrent, clubfoot.

HYPOTHESIS

Talectomy is a valid option for paralytic, dystrophic or idiopathic, inveterate or recurrent, clubfoot.

PATIENTS AND METHODS

A single-center retrospective series comprised 52 clubfeet in 31 patients. Etiology was paralytic in 34 feet (65%) (17 arthrogryposes, 10 myelomeningoceles, 4 encephalopathies, 3 peripheral neuropathies), dystrophic in 6 (12%) and idiopathic in 12 (23%). In 27 feet, there was history of surgery (52%). Mean age at talectomy was 4.7 years. In 45 feet (87%), there were associated procedures (soft-tissue release, tendon surgery, calcaneal or lateral arch osteotomy, tibiocalcaneal fusion) and talectomy was isolated in 7 feet (13%). Mean follow-up was 9 years. Final assessment was based on the modified Ghanem and Seringe classification (G&S) and the Ankle-Hindfoot Scale (AHS).

RESULTS

All feet required at least one complementary procedure, either in the same step or as revision. Revision surgery was performed in 17 cases (33%), including all 7 feet with isolated talectomy (7 calcaneal tendon lengthenings, 10 mid- or hind-foot osteotomies, 6 tibiocalcaneal fusions, one calcaneocuboid fusion, and 2 progressive corrections by external fixator). Finally, 33 feet (63%) had good G&S results, 44 (85%) were pain-free, and 40 (77%) were plantigrade.

DISCUSSION

Talectomy for paralytic or dystrophic inveterate or recurrent clubfoot provided satisfactory medium-term results. Associated to other procedures, it achieves a pain-free plantigrade foot in most cases. Tibiocalcaneal fusion has an analgesic effect. Talectomy may, however, not be indicated in idiopathic clubfoot, given the patients' high functional demand and the existence of alternative treatments.

LEVEL OF EVIDENCE

IV, retrospective series.

Narrative review of the management of a relapsed clubfoot

The management of idiopathic clubfoot has transformed over the past several decades as the Ponseti method for the correction of this deformity became the standard of care, and surgical release has almost all but been abandoned. The Ponseti method has shown very high initial success rate and excellent long-term functional results. Relapse of the deformity, however, continues to be a major problem, occurring in up to 40% of patient, and there is no consensus on the definition and management of the relapsed clubfoot. This review discusses the available management options for the treatment of a relapsed clubfoot deformity following initial treatment with the Ponseti method [including repeat casting, tendo-Achilles lengthening, plantar fascia release, and tibialis anterior tendon transfer (TATT)] as well as following initial surgical treatment with posteromedial release (including casting, hemiepiphysiodesis, revised posteromedial release, osteotomies, fusion, and the use of gradual distraction with external fixators). These are discussed from the least to the most invasive. Available evidence, and limitations of the literature, for the management of relapses following both the Ponseti method and initial surgical release is reviewed along with along with the reported outcomes. Future efforts should be geared towards standardizing the definition of a relapse with objective criteria for its management.

Neglected clubfoot treated by serial casting: a narrative review on how possibility takes over disability

The Ponseti Method is recognized as the best treatment for congenital idiopathic clubfoot in newborns and its principles became also adopted for treating older children with neglected deformity. This review aims to evaluate the role and effectiveness of serial casting in the treatment of neglected clubfoot, worldwide. Clubfoot is a complex tridimensional congenital foot deformity that can be easily treated after birth by correct manipulation of the foot and serial casting, with a great majority of cases requiring a percutaneous Achilles tenotomy, which can be organized as an ambulatory day procedure, without need for general anesthesia. However, in many low-income countries, treatment is not readily available, and many children grow up with disabling foot deformities. When compared to a newborn’s clubfoot, a neglected clubfoot is different and more challenging to treat, as bones become ossified while malaligned and exposed to abnormal forces. Application of the Ponseti method in children with untreated idiopathic clubfoot older than walking age leads to satisfactory outcomes, has a low cost, and avoids surgical procedures likely to cause complications. The upper age limit for the use of Ponseti Method in clubfoot treatment is yet to be established. Success of clubfoot treatment is mostly defined as a pain-free, aesthetically acceptable plantigrade foot, with no need for extensive surgical tissue release after casting and tenotomy. The results of the Ponseti method for the treatment of clubfoot in children after the walking age are encouraging, with more than 80% of success in achieving initial correction and 18–62.5% of relapses. If Ponseti casting is not successful, any further interventions should be carefully selected and planned, in order to maintain the length of the foot and avoid intracapsular scarring or bony fusions.

What is the optimal treatment for equinus deformity in walking-age children with clubfoot? A systematic review

Equinus contracture is the most common deformity at clubfoot relapse and causes pain and functional limitation. It presents a challenge to the orthopaedic surgeon throughout childhood.A systematic review was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Studies included were: (i) original articles, (ii) investigating management of relapsed idiopathic clubfoot, (iii) with at least a partial study population of primarily equinus deformity, and (iv) a paediatric study population of independent walking age.Nine studies were included with a total of 163 patients (207 feet). Studies presented five management paradigms: gastrocnemius-soleus complex release, extensive posterior soft tissue and joint release, anterior distal tibial hemi-epiphysiodesis, distal tibial osteotomy, and circular frame distraction.All approaches reported success in at least one of our selected outcome domains: plantigrade status, range of motion, clinical outcome scores, functional status, radiographic outcomes, patient-reported outcomes, and complications. Younger children tend to be managed with soft tissue release while older children tend to require more extensive bone/joint procedures. Relapse in surgically treated feet is harder to treat.Comparison across treatment approaches is limited by the small size and low evidence level of the literature, as well as a lack of consistent outcome reporting. It is therefore not possible to recommend any one treatment option in any age group.This review highlights the need for a validated core outcome set to enable high-quality research into the management of equinus deformity. Cite this article: EFORT Open Rev 2021;6:354-363. DOI: 10.1302/2058-5241.6.200110.

Anterior Distal Hemiepiphysiodesis of Tibia for Treatment of Recurrent Equinus Deformity Due to Flat-Top Talus in Surgically Treated Clubfoot

Treatment of persistent or recurrent equinus after repeated surgical releases can be challenging in patients with clubfoot. Anterior distal tibial epiphysiodesis has recently been used in patients with recurrent progressive equinus deformity, with inconsistent outcomes. Herein, we used this technique in a carefully selected subgroup (8 children, 9 feet) of patients with a severe equinus deformity and a flat-top talus. The patients were followed up with radiological and clinical measures for 12 to 18 months. The mean angle of the ankle improved significantly (25.5°, p < .0001). The mean anterior distal tibial angle decreased from 86.3° to 69° (p < .0001). Plantigrade foot was obtained in all patients, except 1 with arthrogryposis. When applied to carefully selected patients, anterior distal hemiepiphysiodesis of the tibia is an effective method for management of recurrent equinus deformity.

The Ponseti method in children with clubfoot after walking age - Systematic review and metanalysis of observational studies

Background

The prevalence of untreated congenital clubfoot among children older than walking age is higher in developing countries due to limited resources for early care after birth. The Ponseti method represents an intervention option for older, untreated children.

Methods

A metanalysis was conducted of observational studies selected through a systematic review of articles included in electronic databases (Medline, Scopus, Embase, Lilacs, and the Cochrane Library) until June 2017. A pooling analysis of proportions with 95% confidence intervals (CIs) and a publication bias assessment were performed as routine. Estimates of success, recurrence, and complication rates were weighted and pooled using the random effects model.

Results

Twelve studies, including 654 feet diagnosed with congenital clubfoot in children older than walking age (older than 1 year old), were included for analysis. The rate of satisfactory outcomes found via a cluster metanalysis of proportions using the random effects model was 89% (95% CI = 0.82–0.94, p < 0.01), relative to the total analysed. The recurrence rate was 18% (95% CI = 0.14–0.24, p = 0.015), and the rate of casting complications was 7% (95% CI = 0.03–0.15, p = 0.19).

Conclusion

Application of the Ponseti method in children with untreated idiopathic clubfoot older than walking age leads to satisfactory outcomes, has a low cost, and avoids surgical procedures likely to cause complications. The results obtained exhibited considerable heterogeneity.

Pedobarographic Analysis following Ponseti Treatment for Unilateral Neglected Congenital Clubfoot

Recent trends have led to an interest in Ponseti treatment for correcting neglected congenital clubfoot. Although good clinical and functional outcomes have been reported, the plantar pressure distribution after the treatment of neglected clubfoot has not been explored yet. The present study aimed to investigate whether plantar pressures normalized following Ponseti treatment in patients with neglected congenital clubfoot. Pedobarographic, clinical, and functional examinations were performed in 22 children (aged, 91.0 ± 40.3 months) with unilateral neglected congenital clubfeet, treated using Ponseti method at 27.8 ± 12.1 months of age. Plantar pressure parameters were recorded using a Footscan pressure plate. The contact time, contact area, peak pressure, and pressure-time integral were determined. The data of the affected feet were compared with those of the unaffected feet and healthy controls. Although clinical and functional examinations showed satisfactory results according to the Dimeglio and Pirani scores, considerable differences in plantar pressure parameters were identified among the affected feet, unaffected feet, and healthy controls. Internal foot progression angle and a load transfer from the medial forefoot and hindfoot to the lateral forefoot and midfoot were observed in the affected feet. Future studies should attempt to investigate the factors accounting for plantar pressure deviations and the possible effect of these deviations on the lower limb musculoskeletal development of children.

Long-term Results After Extensive Soft Tissue Release in Very Severe Congenital Clubfeet

BACKGROUND

The purpose of this study was to determine the long-term results, at an average follow-up of 22 years, in 66 patients (105 clubfeet) with very severe congenital idiopathic clubfeet according to the Dimeglio-Bensahel scale.

METHODS

Patients were treated with an extensive soft tissue release in infancy. Results of the treatment were assessed according to the 100-point system of Ghanem-Seringe. At the latest follow-up, all participants were evaluated with regard to pain and the overall function of the lower extremities. At the latest follow-up, anteroposterior and lateral radiographs of the affected foot and the contralateral normal foot, when applicable, were performed.

RESULTS

In total, 92% of the patients were satisfied. The mean functional score of Ghanem-Seringe was 70.4 points. No foot had an excellent result, 19 feet had a good result, 16 had a fair result, and 70 had a poor result. A total of 86 feet were painful after strenuous activities or during walking. Eleven patients walked with a limp. In total, 82 feet were stiff. Ankle dorsiflexion and plantar flexion averaged 4.0±4.5 degrees and 19.9±10.7 degrees. Bone deformations such as flattening of the talar dome were observed in 93 feet. Among these feet, the Ghanem score was significantly lower (P<0.05). Necrosis of the navicular was present in 28 feet and subluxation in 82 feet. In total, 32 feet had moderate osteoarthritis.

DISCUSSION

Results revealed that despite anatomically and radiologically imperfect clubfeet, most patients demonstrated satisfaction. Satisfaction was not significantly correlated with residual deformity, but with the sensation of a normal gait by the patient and the high initial Dimeglio-Bensahel score. Female patients were significantly less satisfied than male patients because they were more constrained in their social life than boys. Their main dissatisfaction was the atrophy of the calf. We noted several residual deformations. Plantar release seems to contribute to the high rate of overcorrection in our series. Extensive posterolateral and plantar releases in very severe clubfeet was responsible for sequelae, morphologic, anatomic, and functional, especially in adulthood. Deterioration of results over time was confirmed by our series.

LEVEL OF EVIDENCE

Level IV.

Modified Ponseti technique for management of neglected clubfeet

Achieving adequate dorsiflexion in neglected clubfoot cases remains challenging. On a close observation of the Ponseti method, we have now made certain modifications from the standard Ponseti protocol. This has helped us improve functional results, as well as reduce the number of casts in this walking-age group. From March 2011 onward, we managed 62 neglected clubfeet in 41 patients with the modified protocol. All these patients were treated with serial weekly above-knee casts. The feet were assessed by Dimeglio and Pirani scorings, which were done every week. These children were closely monitored and followed up at regular intervals for any signs of relapses. The mean age group was 3.1 years (1.1-12 years). The mean follow-up period for these feet was 3 years (1.2-4 years). Mean Dimeglio score before treatment was 15.9, and after treatment it was 0.52. Mean Pirani score before treatment was 4.21 and after treatment it was 0.03. The average number of casts before tenotomy with our modified method was 6.9. Percutaneous tenotomy was done in all the cases. The mean dorsiflexion achieved at the end of treatment was 21.3° (15°-40°). Our modified Ponseti technique is a very effective and reproducible method for correction of neglected clubfeet. We feel that an extensive soft tissue surgery may not be required for neglected clubfeet even up to the age of 10 years.

Ponseti Treatment of Rigid Residual Deformity in Congenital Clubfoot After Walking Age

BACKGROUND

There is no established treatment for rigid residual deformity of congenital clubfoot (CCF) after walking age. Soft-tissue procedures, osseous procedures, and external fixation have been performed with unpredictable results. We applied the Ponseti method to patients with this condition in order to improve the outcomes of treatment.

METHODS

We retrospectively reviewed the cases of 44 patients (68 feet) with congenital clubfoot whose mean age (and standard deviation) at treatment was 4.8 ± 1.6 years. All patients had been previously treated in other institutions by various conservative and surgical protocols. Residual deformity was evaluated using the International Clubfoot Study Group Score (ICFSGS), and stiffness was rated by the number of casts needed for deformity correction. Ponseti manipulation and cast application was performed. Equinus was usually treated with percutaneous heel-cord surgery, while the cavus deformity was treated with percutaneous fasciotomy when needed. Tibialis anterior tendon transfer (TATT) was performed in patients over 3 years old. At the time of follow-up, the results were evaluated using the ICFSGS.

RESULTS

Before treatment, 12 feet were graded as fair and 56, as poor. Two to 4 casts were applied, with each cast worn for 4 weeks. Stiffness was moderate (2 casts) in 23 feet, severe (3 casts) in 30 feet, and very severe (4 casts) in 15 feet. Percutaneous heel-cord surgery was performed in 28 feet; open posterior release, in 5 feet; plantar fasciotomy, in 30 feet; and TATT, in 60 feet. The mean length of follow-up was 4.9 ± 1.8 years. Eight feet had an excellent result; 49 feet, a good result; and 11 feet, a fair result. No patient had pain. All of the feet showed significant improvement.

CONCLUSIONS

Ponseti treatment with TATT, which was performed in 88% of the feet, was effective, and satisfactory results were achieved in 84% of the feet. At the time of follow-up, no patient showed an abnormal gait, all feet were plantigrade and flexible, but 2 feet (2.9%) had relapsed.

LEVEL OF EVIDENCE

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

Surgical treatment of neglected congenital idiopathic talipes equinovarus after walking age in Eritrea: an Italo-Eritrean cooperation

An Italian team of orthopaedic surgeons joined Eritrean colleagues to perform a clinical study in ambulating children affected by neglected idiopathic congenital talipes equinovarus (clubfoot). This study reports the surgical strategy as well as clinical outcomes, early complications and relapse at a mid-term follow-up. Four expeditions of 7 days were organized between 2012 and 2015 from Italy to the Halibet Hospital of Asmara in Eritrea. In each expedition were included two experienced surgeons, two assistants and one anaesthesiologist. During these expeditions, a total of 468 patients were evaluated together with Eritrean colleagues and 45 cases of neglected talipes equinovarus in ambulating children were diagnosed and selected for surgery. Follow-up range was 1-3 years. During the four expeditions, the Eritrean team of orthopaedic surgeons learned to manage most cases of neglected talipes equinovarus. No major complications were reported. Sixteen feet were considered excellent, 25 good and four poor. No overcorrections were observed. Neglected congenital talipes equinovarus is the result of delayed treatment of congenital deformity in developing countries, and its treatment often requires extensive surgery. Collaboration with foreign expert surgeons may help local doctors to learn how to treat this disease. The current study demonstrates that surgical expeditions in developing countries, when organized in collaboration with local doctors, help to manage on site this severe deformity.

Congenital idiopathic talipes equinovarus before and after walking age: observations and strategy of treatment from a series of 88 cases

BACKGROUND

We reviewed a series of newborns, toddlers and ambulating children affected by idiopathic congenital talipes equinovarus (clubfoot). Taking into account the time of diagnosis, stiffness of the deformity and walking age, nonsurgical or surgical treatment was considered. This study reports clinical outcomes, early complications and relapse at mid-term follow-up.

MATERIALS AND METHODS

Fifty-two clubfeet were diagnosed at birth, 12 in non-ambulating children aged between 4 and 12 months and 24 in ambulating children. Feet were classified using the Pirani score. Newborns and toddlers were treated with serial casting (Ponseti); however, toddlers also underwent open Achilles tendon lengthening (2 feet) and posteromedial release (3 feet). In all ambulating children, surgical treatment was always performed: selective medial release combined with cuboid subtraction osteotomy (1 foot), posteromedial release (6 feet), and posteromedial release combined with cuboid subtraction osteotomy (17 feet).

RESULTS

The average follow-up was 5 years (1-6 years). In newborns treated with Ponseti, the results were excellent in 42 feet, good in 6, and poor in 4. In non-ambulating children, the results were excellent in 9 feet, and good in 3. In ambulating children, the results were excellent in 5 feet, good in 16, and poor in 3. No major complications were reported. No overcorrections were observed. The need for open surgery was higher in cases of delayed treatment. In cases of relapse, re-casting and/or more extensive surgery was considered.

CONCLUSIONS

Early treatment enables a high rate of good correction to be obtained with serial casting and limited surgery. Conversely, if the deformity is observed after walking age surgery should be considered. Serial casting in cases of late observation and relapse have demonstrated encouraging results.

LEVEL OF EVIDENCE

IV.

Treatment of the neglected and relapsed clubfoot

Treatment of the neglected and the relapsed clubfoot is one of the most controversial topics in pediatric foot care. This article reviews the breadth of treatment options for practicing podiatrists or orthopedists with a specialty in complex clubfoot treatment. Discussion includes the appropriate circumstances for the use of the different procedures presented and the author's preferred treatment algorithm, based on 15 years of treating neglected, relapsed, and nonidiopathic clubfeet.

A critical review of interventions for clubfoot in low and middle-income countries: effectiveness and contextual influences

Inadequate treatment provision for clubfoot in many low and middle-income countries results in a high prevalence of neglected clubfoot, a condition causing severe impairment. This study critically reviewed evidence on surgical, conservative and mixed (Ponseti) treatment interventions for clubfoot in low and middle-income countries. Intervention effectiveness was analysed by comparing outcomes within International Classification of Functioning groupings. Contextual factors were qualitatively analysed for effect on intervention outcomes. The Ponseti method appeared to be more effective than conservative techniques but was not directly comparable with surgical techniques. Contextual factors were reported to influence outcomes; service providers using the Ponseti technique had made most intentional steps to overcome contextual barriers.

Anterior distal tibial epiphysiodesis for the treatment of recurrent equinus deformity after surgical treatment of clubfeet

The treatment of clubfeet has changed constantly. Before the acceptance of the Ponseti serial casting, extensive surgical release was widely used. The treatment of relapse in these surgically treated clubfeet can be very challenging. Many methods have been used ranging from osteotomies to new posteromedial release, or correction using the Ilizarov fixator. Supramalleolar osteotomy was practiced for the treatment of residual equinus. The aim of this study is to evaluate the effect of anterior epiphysiodesis of the distal tibia on recurrent equinus deformity in patients with clubfeet treated surgically.

METHODS

We evaluated 25 children (31 feet) with recurrent equinus deformity after surgical treatment of clubfoot treated in our institution from 2003 through 2009. There were 16 boys and 9 girls, of whom 11 had recurrent equinus deformity on the left side, 8 on the right side, and 6 on the bilateral side. Three patients were treated with Richard staples and 22 were treated with 8-plates. Patients were examined clinically and radiologically, preoperatively. The mean dorsiflexion of the ankle was 2.5 degrees (-5 to 10 degrees) and the anterior distal tibial angle (ADTA) was 85 degrees. The patients were followed postoperatively and evaluated clinically and radiographically. The plates or staples were removed if the desired effect of around 15 degrees of dorsiflexion was achieved, or the ADTA shifted >15 degrees.

RESULTS

Mean follow-up was 22 months. Mean improval of dorsiflexion was 2 degrees, with a mean of dorsiflexion of 4.5 degrees, and mean radiological changes of ADTA were 13 degrees. We found no correlation between the radiographic changes and the clinically measured dorsiflexion.

CONCLUSIONS

The use of anterior distal tibial epiphysiodesis does not seem to give a clinically significant improvement in dorsiflexion of the ankle despite a marked shift in the ADTA.

Transfer of the tendon of tibialis anterior in relapsed congenital clubfoot: long-term results in 38 feet

A total of 38 relapsed congenital clubfeet (16 stiff, 22 partially correctable) underwent revision of soft-tissue surgery, with or without a bony procedure, and transfer of the tendon of tibialis anterior at a mean age of 4.8 years (2.0 to 10.1). The tendon was transferred to the third cuneiform in five cases, to the base of the third metatarsal in ten and to the base of the fourth in 23. The patients were reviewed at a mean follow-up of 24.8 years (10.8 to 35.6). A total of 11 feet were regarded as failures (one a tendon failure, five with a subtalar fusion due to over-correction, and five with a triple arthrodesis due to under-correction or relapse). In the remaining feet the clinical outcome was excellent or good in 20 and fair or poor in seven. The mean Laaveg-Ponseti score was 81.6 of 100 points (52 to 92). Stiffness was mild in four feet and moderate or severe in 23. Comparison between the post-operative and follow-up radiographs showed statistically significant variations of the talo-first metatarsal angle towards abduction. Variations of the talocalcaneal angles and of the overlap ratio were not significant. Extensive surgery for relapsed clubfoot has a high rate of poor long-term results. The addition of transfer of the tendon of tibialis anterior can restore balance and may provide some improvement of forefoot adduction. However, it has a considerable complication rate, including failure of transfer, over-correction, and weakening of dorsiflexion. The procedure should be reserved for those limited cases in which muscle imbalance is a causative or contributing factor.