Clubfeet associated with congenital constriction bands of the ipsilateral lower extremity

The Ponseti Method for the Treatment of Clubfeet Associated With Amniotic Band Syndrome: A Single Institution 20-Year Experience

BACKGROUND

Amniotic band syndrome (ABS) is a congenital disorder resulting in fibrous bands that can cause limb anomalies, amputations, and deformities. Clubfoot has been reported in up to 50% of patients with ABS. The purpose of this study is to compare treatment characteristics and outcomes of clubfoot patients with ABS to those with idiopathic clubfoot treated with the Ponseti method.

METHODS

An Institution Review Board (IRB) approved retrospective review of prospectively gathered data was performed at a single pediatric hospital over a 20-year period. Patients with either idiopathic clubfeet or clubfeet associated with concomitant ABS who were <1 year of age and treated by the Ponseti method were included. Initial Dimeglio score, number of casts, need for heel cord tenotomy, recurrence, and need for further surgery were recorded. Outcomes were classified as "good" (plantigrade foot±heel cord tenotomy), "fair" (need for a limited procedure), or "poor" (need for a full posteromedial release).

RESULTS

Forty-three clubfeet in 32 patients with ABS, and 320 idiopathic clubfeet in 215 patients were identified. Average age at last follow up was not different between ABS and idiopathic cohorts (7.4 vs. 5.2 y, P=0.233). Average Dimeglio score was lower in the ABS cohort (12.3 vs. 13.7, P=0.006). Recurrence rate was significantly higher in the ABS (62.8%) compared with idiopathic cohort (37.2%) (P=0.001). Clinical outcomes were significantly better in the idiopathic cohort (69.4% "good", 26.9% "fair", 3.8% "poor") compared with the ABS cohort (41.9% "good", 34.9% "fair", and 23.3% "poor") (P<0.001). Within the ABS cohort, no significant differences in clinical outcomes were found based upon location, severity, or presence of an ipsilateral lower extremity band.

CONCLUSION

Clubfeet associated with ABS have higher rates of recurrence, a greater need for later surgery, and worse clinical outcomes than idiopathic clubfeet. This information may prove helpful in counseling parents of infants with ABS associated clubfeet.

LEVEL OF EVIDENCE

Level III.

Clubfeet and congenital constriction band syndrome

BACKGROUND

Clubfeet and constriction band syndrome is a very rare non-idiopathic condition. Treatment is often difficult and the recurrence deformity rate is high. The purpose of this study was to assess the effectiveness of Ponseti method in the treatment of congenital constriction band syndrome accompanied by clubfoot deformity and lymphedema.

CASE PRESENTATION

We are presenting an interesting case of bilateral clubfeet and congenital circumferential constriction band syndrome in the lower limb. Ponseti method of correcting the congenital clubfoot deformity was applied. Constriction band release is accomplished by two stages completely excising the fibrous band and multiple two-stage Z-plasties on the right calf.

CONCLUSION

The results of this study indicate that the Ponseti method of gentle, systematic manipulation and weekly cast changes is an effective treatment of non-idiopathic clubfoot distal to congenital amniotic constriction band.

Amniotic band syndrome associated with limited dorsal myeloschisis: a case report of an unusual case and review of the literature

Amniotic band syndrome (ABS) has been known since ancient times. Descriptions in modern medicine have occurred since the mid-nineteenth century. The association of the amniotic band syndrome with tethered cord is rare. It was generally thought to be incompatible with life. Of late, with better imaging, there have been case reports of amniotic bands causing cord tethering in neurosurgical literature, but its association with limited dorsal myeloschisis has hitherto not been described. We report a case of amniotic band syndrome (ABS) associated with a cervical limited dorsal myeloschisis (LDM) in a child of 2 and a half years old. The management of LDM in ABS is essentially the same as in isolated cases.

The Effectiveness of the Ponseti Method for Treating Clubfoot Associated With Amniotic Band Syndrome

BACKGROUND

Amniotic band syndrome (ABS) is a congenital disorder with an associated incidence of clubfoot deformity in over 50% of patients. Although early reports in the literature demonstrated a poor response to casting treatments, recent application of the Ponseti technique in ABS patients have been more promising.

METHODS

A retrospective review of all patients with clubfoot and a concurrent diagnosis of ABS were reviewed at a single institution. Patients not managed initially with the Ponseti method were excluded. Data collected included patient age at presentation, sex, unilateral or bilateral, amniotic band location and associated findings, and response to treatment-number of casts and requirement of Achilles tenotomy, tibialis anterior tendon transfer, or other surgical procedures. Duration of treatment at latest follow-up visit was noted and outcome was based on clinical foot appearance and plan for any further procedures.

RESULTS

Twelve patients (7 female and 5 male) with a total of 21 feet (9 bilateral and 3 unilateral) were identified. The average age at presentation was 3 weeks (range, 1 to 9 wk). The average number of casts was 6 (range, 3 to 11). Seventeen of 21 feet (81.0%) underwent percutaneous Achilles tenotomy. The initial correction rate for all patients with the Ponseti technique was 20/21 feet (95.2%) and recurrence was noted in 7/21 feet (33.3%). One patient underwent primary posteromedial release and 2 patients had associated neurological deficits. The average follow-up was 3.9 years (range, 9 mo to 10 y) and all but one patient had supple, plantigrade feet.

CONCLUSION

The Ponseti technique is an effective first-line treatment in patients who have clubfeet associated with ABS, including those with a neurological deficit.

LEVEL OF EVIDENCE

Level IV.

Clubfoot associated with congenital constriction band: the Ponseti method perspective

BACKGROUND

The clubfoot and congenital constriction band is a known association in which the clubfoot is considered as being rigid, responding poorly to casting, and requiring surgical interventions.

OBJECTIVE AND METHODS

The series describes 3 cases of clubfoot with deep ipsilateral congenital constriction bands managed with Ponseti method and immediate outcomes achieved.

RESULTS AND CONCLUSIONS

The feet responded favorably to casting although equinus correction required more extensive surgical interventions. The preexisting edema in distal limb often precluded a snuggly fitting cast increasing the cast numbers. Careful monitoring of vascularity is essential. Simultaneous procedures of release of constriction bands, correction of hand anomalies and equinus can be combined to the advantage of the patient.

LEVELS OF EVIDENCE

Case report, Level IV.

The use of the Ponseti method to treat clubfeet associated with congenital annular band syndrome

BACKGROUND

A clubfoot deformity may be associated with congenital annular band syndrome (CABS), and has, until recently, been thought to be resistant to nonoperative management. The purpose of this report was to describe the use of the Ponseti method in the treatment of 5 patients whose clubfeet were associated with this syndrome.

METHODS

All patients with a diagnosis of clubfoot, who were treated at the Orthopaedic Hospital Clubfoot Clinic, over a period of 4 years, were reviewed. During that period, a total of 131 infants with 194 clubfeet were treated. We identified 5 infants (3.8%) with 6 clubfeet associated with CABS. The patients were managed using the Ponseti method. One of the patients, with a contralateral amputation of the limb opposite to the side with a clubfoot, required the use of a unilateral foot abduction orthosis rather than a conventional foot abduction orthosis. The outcomes evaluated included: the number of casts needed to obtain correction, the percentage of patients requiring a tendo-Achilles tenotomy, the number of relapses, and the need for additional secondary procedures.

RESULTS

The mean age at presentation for the 5 patients was 6.2 weeks. Four of the clubfeet had an ipsilateral band and 2 did not. None of the patients had a neurological deficit distal to a band. The mean number of casts used to correct the deformity was 6, and a percutaneous tendo-Achilles tenotomy was done in all cases. All of the feet achieved initial correction. Four patients (5 feet) experienced a relapse attributed to failure to use the postcorrective brace as prescribed. Correction of the foot in 3 of these patients was regained and maintained by another series of manipulation and cast application followed by resumption of bracing. One patient underwent an anterior tibial tendon transfer. The patients were followed for an average of 32.6 months (21 to 49 mo). All feet were supple and plantigrade at latest follow-up evaluation.

CONCLUSIONS

The Ponseti method may be successfully applied to clubfeet associated with CABS.

LEVEL OF EVIDENCE

Level IV.

Amniotic band syndrome of the upper extremity: diagnosis and management

Amniotic band syndrome, a condition involving fetal entrapment in strands of amniotic tissue, causes an array of deletions and deformations. Band formation most frequently affects the distal segments, including the hand. Because of the heterogeneous nature of expression of this disease, treatment is individualized. Timing of repair and surgical planning are important in improving functional outcome. In the patient with distal edema and acrosyndactyly, early repair portends better prognosis. Improvements in prenatal diagnosis and fetoscopic surgical technique may eventually allow treatment of amniotic band syndrome in utero.

Amniotic band syndrome

Amniotic band syndrome is an uncommon, congenital fetal abnormality with multiple disfiguring and disabling manifestations. A wide spectrum of clinical deformities are encountered and range from simple ring constrictions to major craniofacial and visceral defects. Lower extremity limb malformations are extremely common and consist of asymmetric digital ring constrictions, distal atrophy, congenital intrauterine amputations, acrosyndactyly, lymphedema and clubfoot. Although debated, early amnion rupture with subsequent entanglement of fetal parts (mostly limbs and appendages) by amniotic strands is the primary theory of pathogenesis. The sporadic nature of this congenital anomaly is discussed, as well as a case study involving the surgical correction of an associated rigid clubfoot deformity.