Outcome of clubfoot correction at ‘Walk for Life’ clinic of Mymensingh Medical College Hospital: A four year review
Rahman F1, Chowdhury MH2, Kabir H3, Alam J4, Uddin J5, Evans AM6*
1Armed Forces Medical College, Dhaka Cantonment, Bangladesh
2Rajshahi Medical College Hospital, Rajshahi, Bangladesh
3Department of Orthopaedic, Abdul Hamid Medical College, Kishorganj, Bangladesh
4Shahid Ziaur Rahman Medical College, Bogura, Bangladesh
5Chattogram Medical College Hospital, Chattogram, Bangladesh
6La Trobe University, Melbourne, Victoria, Australia
Principal Contact

 10.3329/bmrcb.v44i3.39936    0000-0001-8101-9456


Abstract

Background: Every year in Bangladesh an estimated 3500 - 4000 children are born with a clubfoot deformity, which is approximately one of every 1000 children born in Bangladesh. Left untreated, the condition leads to lifelong deformity causing individual disability and potential unproductivity. Affected children grow up as burdens to the family and ultimately leads to significant poverty.

Methods: This study was conducted at the &lspuo;Walk for Life’ (WFL) clinic Mymensingh Medical College Hospital (MMCH) during February 2011 to December 2014. The non-surgical Ponseti method was applied by the Orthopaedic surgeon and Physiotherapist. Follow-up for relapsed deformity in children who were treated in 2011 occurred in 2015.

Results: A total 577 children comprised 175 (30.32%) female and 402 (69.7%) male, a gender ratio 1 F: 2.29 M. Completions of treatment data was available for 471 children, as 106 had dropped out at different stages of the treatment cycle. Sadly, 12 children had died. In 440 (76.4%) children, the parent’s monthly income approximated TK. 5000, and 364 (82.8%) lived in tin shed houses. The parents with lowest incomes predominated for children with clubfoot. Most parents 383 (66.4%) were labourers, small business and service workers with the lowest incomes. A family history of clubfoot deformity was found in 8.3%, of which 2.8% were cousins, 1.7% were an uncle. The average number of corrective plaster casts applied before the tenotomy was 3.32 in 477 children. In 73% of children three to six casts were used for initial correction. An Achilles tenotomy was performed in 81% children, 18% did undergo a tenotomy and one child had multiple tenotomies. Four years following initial treatment, 99 children were reviewed, and 98 were walking and running. Parent’s satisfaction was 96%. Thirteen percent children showed relapse signs. Most of the children treated at the WFL clubfoot clinic were walking normally four years after initial treatment.

Conclusion: The Ponseti method is found to be very effective and especially for a developing country like Bangladesh. Poverty and housing condition may play a role in clubfoot disease. The dropout rate across the treatment cycle was 18.4%, warranting closer evaluation. The patronage of the Glencoe Foundation WFL clinics since 2009, played an important role in relieving thousands of Bangladeshi children from disability.

Keywords: Clubfoot, Ponseti method, Relapse


Introduction

Clubfoot is a complex, congenital foot deformity of the foot also known as ‘congenital talipesequinovarus’ (CTEV). Visually, the foot affected by clubfoot appears to be twisted inwards and downwards. The foot is shorter than a normal one and the calf muscles of the affected limb will be smaller.1 Every year in Bangladesh an estimated 3500 - 4000 children are born with a clubfoot deformity, with a global incidence of 1.5 per 1000 livebirths.2 Untreated, clubfoot leads to lifelong deformity causing individual disability and unproductivity. This causes the children to grow up as burdens of the family and ultimately leads to significant poverty.

During 2009 to 2017, over 19,500 children with clubfoot were enrolled at WFL clinics across Bangladesh.3 WFL is a charitable project of the Glencoe Foundation, with clinics appended to the Government of Bangladesh initiatives, and acknowledged by the Government as the National Clubfoot Programme in Bangladesh. The preferred treatment of congenital idiopathic talipes equino varus (clubfoot) is the nonsurgical Ponseti method, which has revived interest in infantile clubfeet.4,5 Ponseti method of manipulation and plaster casting is very effective in correcting clubfoot deformity. It is especially important in developing countries and well-trained staff can manage the cases effectively by manipulation and cast application.6

However, surgical treatment in the form of posteromedial release, is often undertaken after failure of conservative measures, but this should be avoided and the ‘joint-sparing’ Ponseti method repeated when required. Several factors such as genetic predisposition, gestational abnormalities and a variety of histological abnormalities seem to be related to genesis.7,8 Nonetheless, the true cause of CTEV remains unknown.9

As reported previously, treatment is generally unaffordable for the families.10 Since the inception of ‘Walk for Life’ at Mymensingh Medical College Hospital (MMCH) in 2011, 634 children were treated with Ponseti method, to end 2014. Ponseti method has become the ‘gold standard’ of care for the treatment of CTEV and has been well circulated all over the world, especially the developing world where most clubfoot children live.11 Previous reports have indicated the challenges and successes of implementing the Ponseti technique in this poor and populous country. There are records of conservative treatment dating back to 400 BC performed by Hippocrates by means of manipulations followed by immobilization.12

In the 21st century, surgical correction of clubfeet has been firmly denounced.13 Retrospective review and prospective studies have both shown the poor outcomes, in terms of pain and function from the Posterior Medial Release (PMR) surgical procedures.14 The non-surgical Ponseti method has been extensively investigated and found to give the best clinical outcomes, and also to be a more cost effective, when compared to surgery.15,16 It is imperative to note the mid-term results of this large-scale project, indicating its extraordinary effectiveness, with 99% of treated children now walking independently two years after treatment.17 This study was undertaken for some baseline characteristics and to evaluate the success of Ponseti method in Bangladesh, and to explore characteristics of the affected population.



Materials and Methods

This study was conducted as a retrospective and cross-sectional review of the WFL clinic at MMCH between 2011 and 2015. Ethical approval was taken from Ethical Review Committee of Mymensingh Medical College. MMCH is a tertiary referral teaching hospital in greater Mymensingh area in the north east to the capital of Bangladesh, covering almost 25 million people. All children treated at WFL at MMCH from February 2011 to December 2014 were included. All children were aged from birth to three years.

Relevant demographic and clinical information were documented for this study. Family history, housing condition, clubfoot severity score (Pirani method), need for tenotomy, number of casts to get correction and complications were recorded.

Children with clubfoot and an associated syndrome, and those who had previous surgery for clubfoot, were excluded from this study. The standard Ponseti method was applied, with follow up by the Orthopaedic surgeon and Physiotherapist.

Follow up for relapses for those children treated in 2011 occurred when the parents brought their children to the clinic periodically. Ultimately, all children who had commenced treatment in 2011 were contacted for review in 2015.

For the follow up reviews, WFL made phone calls to all the children’s parents over mobile (cell) phone, requesting them to bring their child to the clinic. WFL covered the transport costs. At the review appointments, information was collected by face to face interview with parents and some older children could also answer questions.

Children’s physical ability to squat, walk, run, and use stairs were assessed by asking their parents and seeing the children’s movements. A previously developed assessment tool was used for this purpose – The Bangla Clubfoot assessment tool.12

Data were entered on an electronic spreadsheet using both Microsoft Excel and SPSS software for analyses.

Descriptive and frequency statistics were used for demographic data, including both whole scores and percentage. Mean scores were reported at follow-up.



Results

Clubfoot has from long been an unsolved clinical challenge for the Orthopaedic surgeons. The problem is more serious in developing countries on account of late presentation, higher rate of drop outs from treatment and superstitious beliefs attached to this congenital problem.18

In this study, a total of 577 clubfoot children reported to WFL clinic MMCH from 2011 to 2014. Of the total 577 patients 175 (30.32%) were female and 402 (69.7%) were male. Gender ratio was 1 F: 2.29 M.

There was no inherent family history of clubfoot in 91.7% of affected children, and only 8.3% had family history, of which 2.8% cousins, 1.7% uncle (table II).

Table I: Distribution of Children by condition of Housing and Parent’s income (n=577)

Family income (Taka/month)

Condition of Houses

Total

Bamboo/wood

Brick

Mud

Tin

0 - 5000

24 (5.2%)

28 (6.3%)

24 (5.7%)

364 (82.8%)

440 (76.4%)

5000 - 10,000

1 (0.9%)

18 (32.1%)

3 (3.9%)

81 (78.6%)

103 (17.9%)

10,000 - 20,000

0

5 (20.8%)

0

19 (4.1%)

24 (4.2%)

> 20,000

0

5 (50%)

0

5 (50%)

10 (1.6%)

Total

25

56

27

469 (81.3%)

577 (100%)

Note: July 2017: 5000 Taka = US $62

Table II: Inherent Family History of Club Foot (n = 577)

 

Relationship

 

No Inherent History

Mother

Father

Sibling, Cousin, Uncle (combined)

Sibling

Grand Parent

Cousin

Uncle

Family History Clubfoot (%)

529 (91.7%)

2 (0.3%)

4 (0.7%)

1 (0.2%)

12 (2.1%)

3 (0.5%)

10 (1.7%)

16 (2.8%)

577 (100%)

Total

529

2

4

1

12

3

10

16

577


The average age at the time of first cast was 1.75 (0.96) years with approximately half of children (54.5%) less than three months, and three-quarters (78%) up to one year of age (table III).

Table III: Children by age at 1st cast (n = 471)

Age at 1st cast

Frequency (n)

%

0 – 3 months

260

55.2

4 months – 1 year

106

22.5

1 – 2 years

70

14.9

2 – 3 years

35

7.4

Total

471

100.0

Mean age 1.75 years (SD 0.96)

Within the 99 reviewed patients, average age at first cast was 1.01 years, with 31 less than three months old, and 57 up to age one year.

Of the 577 children who commenced treatment at MMCH, 471 (81.6%) completed all facets of the three-year treatment cycle. Drop out occurred at different treatment phases in 106 children: 43 during casting phase, 51 during maintenance brace phase. Twelve children died due to illness unrelated to clubfoot deformity: five during casting phase, seven during maintenance brace phase.

This study revealed that 440 (76.4%) patient’s parents had monthly income approximating TK 5000 per month of which 364 (82.8%) had tin shed houses with other categories of income group that totals 469 (81.3%) of tin shed, that showed least income group had maximum number of clubfoot patients. Whereas highest income group had only 10 (1.6%) patients those had tin shed and building houses of their parents (table I).

Parent’s occupation were predominately day labourers, and small business and were least income people were 383 (66.4%).

For the 99 children reviewed from 2011, the average number of casts was between three and six 73% (72/99). One child had 17 casts, 16 children had between seven to 11 casts and 10 had only one to two casts (table IV).

Table IV: Number of casts applied before Tenotomy (n = 471)

Grouped cast numbers

Frequency (n)

%

1 - 2

9

1.6

3 - 6

138

23.9

7 - 11

109

18.9

12 - 16

133

23.1

>17

88

15.3

Total

471

100.0

Mean 3.32 casts (SD 1.13)

Overall for the 471 children, the average number of casts applied was 3.32 (1.1%) before the tenotomy, and up to six casts were required in 147/471 children.

Out of 99 reviewed children commencing treatment in 2011 80/99 (80.8%) children had a percutaneous tenotomy, 18/99 (18.2%) did not, and one child have multiple tenotomies.

Parent’s satisfaction was observed in this study and it was found that 435 (91.2%) were satisfied with the overall treatment of their children. A total of 30 (6.2%) parents were not completely satisfied with their child’s treatment. The four-year review of 99 children found a similar result, with 96% parents satisfied.

Most of the children reviewed after four years, 38 (38.4%) were aged between four and five years, 25 (25.3%) were a year older, and 22 (22.2%) a year younger.

Parent’s opinion of their child’s physical ability four years after treatment returned the following: 80/99 could wear their chosen shoes, 8/99 could not wear their chosen shoes, 11/99 parents did not know, and could not afford shoes for their child. Regarding activity, 97/99 children played, 84/99 could fully squat, 98/99 children walked and ran. Overall, 97/99 parents were happy on the management and treatment of the clinic (table V).

Table V: Parent’s Observation on their child Progress (n= 99)

Parents Observation

Yes

No

Do not know

Mean

Child wear shoes of choice

80 (80.8%)

8

11

44

Child play

97 (97.9%)

2

 

98

Squatting

84 (84.8%)

14 (14.14%)

1

84

Walking

98 (98.9%)

1

 

99

Running

98 (98.9%)

1

 

99

Happy

96 (96.9%)

3

 

97


Not all children were available for the four-year review. Of the 151 contacted, 48 could not be located, two children had since died, 103 reported of which 4 children had syndromic foot and were excluded from this study. Of the 99 included children, 13 (13.1%) had developed relapse signs and were managed accordingly, with repeated Ponseti method, and minor surgery if indicated.



Discussion

The children who were treated successfully in 2011 were walking normally, mixing with other children, growing toward adolescence, and enjoying a rehabilitated life.

Remarkably, the mothers or fathers themselves afflicted with clubfoot deformity were found frustrated not for their own disability, but for their child. The girls with clubfoot were not being married due to this ‘clubfoot curse’, and suffered lasting despair. Untreated clubfoot causes a critical situation for people in Bangladesh, which has been effectively improved by the Glencoe Foundation, establishing 42 WFL clinics across the country. Since 2009, over 19,500 children were treated (as on May, 2017), and most were walking and would be able to live a normal life.

This study confirmed the gender ratio disparity inherent in CTEV, as did Mejabi et al. who found 38 (62.3%) male and 23 (37.7%) female with the gender ratio of 1.7 M: 1 F. Similarly, Pulak and Swamy found 80% male and 20% female with a gender ratio of 4 M: 1 F.20 The precise incidence of clubfoot in Bangladesh per se is not established, but recent global data can confidently be adopted ie 1-2:1000 births. In Bangladesh, and other developing nations, females clubfoot patients are not given due attention, due to social bias and wariness favouring male children, which may also influence reported gender ratios.21

This study showed that three-quarters of parents had a very low monthly income, with most living in tin shed houses. The lowest incomes, poor standard housing majority also had maximum proportion of clubfoot children. Supporting this study, a previous report found that approximately half of the family incomes were between TK 5000 to 10,000.22 The very likely reason that these very low income families brought their children with clubfoot deformity to the WFL clinic is that the treatment was provided totally free of cost.

Family history of clubfoot in this study was similar to that found by Honein but lower than reported by other family-based studies.23-24

Morcuende et al reported the average age at first cast as three months.25 Similarly, Lara et al reported the average age at first cast as between 3.2 and 5.4 months.9 This study from MMCH returned an older average age at first cast, as WFL were being established and public awareness still growing. From many perspectives, a younger age at first cast is preferable for easier clubfoot management. It has been recommended that treatment should begin within first 15 days of life.26

Herzenberg et al found the mean number of casts to be seven, another study found a mean of five corrective casts.26-27 In contrast, this study found an average of three and six corrective casts required, including the four year review cohort. Recently, with more experience and an adopted evidence-based modification, WFL has begun changing plaster casts at shorter intervals.13

The tenotomy rate in this study was 80%, comparing favourably with 67% in Laara et al,9 57% in Chu et al.26 It should be noted that Dr Ponseti advised and performed the tenotomy in more than 90% of cases.9

Parents’ satisfaction is an important factor in any paediatric condition requiring their cooperation for effective intervention. In this study parent satisfaction was very high, similarly to the findings of Bor N et al, who also found that parents indicated high satisfaction with the treatment of their children with Ponseti method.27 Further, Evans et al, found 97% parents were happy with their children’s improvement with treatment, where as Rahman et al, found that half of parents were highly satisfied after receiving treatment for their child’s clubfoot deformity.10,22

The positive effect of public awareness efforts has been apparent across WFL clinics in Bangladesh, as the age of presentation of children has reduced. Most children reviewed were aged between three and six years. By contrast, Rahman et al, reviewed 90 percent of children aged less than three years.21 Since 2011, when the WFL clinic at MMCH began, the age of initial presentation of children with clubfoot has reduced with most now aged less than six months at the time of first casts.

This study addressed and appreciated parents’ opinions, and what becomes relevant for them as the children become older. Being able to wear their choice shoes, being able to play with other children, to squat (for play, toileting, eating), and being able to walk and run like other same-aged children were all important factors for parents and related to their reported happiness. Rahman et al also mentioned the importance for parents for their children to be able to stand, walk and do other activities like healthy babies.22

Relapsing clubfoot deformity is not uncommon. Those found with relapse signs in this study, were all given further treatment. Rahman et al22 returned three-fold higher relapse rate of 37%, and Morcuende et al13 found 25% relapses. Current knowledge expresses that relapses are not always due to non-compliance with treatment, but due to underlying connective tissue ‘stiffness’.


Conclusion

Based on the study finding, it may be concluded the Ponseti method has been widely found to be very effective both clinically and economically, with greatest gains and advantage for developing countries like Bangladesh. Poverty, housing conditions, and nutrition may contribute to ‘clubfoot disease’ and warrant further prospective study. The Bangladesh Government can continue to support WFL clinics where Orthopaedic surgeon and Physiotherapists are available, to alleviate the burden of this correctable disability.


Acknowledgement

The research group acknowledges all WFL clinics, the significant patronage of the Glencoe Foundation (Colin MacFarlane, Founder), all WFL volunteers, and all WFL donors. In addition, WFL acknowledge the role of the late Dr Frederick R. Dietz, our respected colleague and friend.

Conflict of Interest: Authors declare no conflict of interests.



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