Congenital upper limb deficiencies and associated malformations in Finland: a population-based study

Prevalence of Congenital Anomalies of the Upper Limbs in Brazil: a descriptive cross-sectional study

BACKGROUND

Congenital Anomalies of the Upper Limb (CAUL) are a group of structural or functional abnormalities that develop during intrauterine life and can lead to limb dysfunction.

OBJECTIVES

To analyze the prevalence of congenital anomalies of the upper limbs in Brazil and assess maternal and neonatal variables.

DESIGN AND SETTING

A cross-sectional, descriptive study was conducted on congenital upper limb malformations among live births across Brazil.

METHODS

The study spanned from 2010 to 2019. Data were sourced from the Department of Informatics of the Unified Health System (DATASUS) and the Live Birth Information System (SINASC) portal. Analyses focused on the information reported in field 41 of the Live Birth Declaration Form entered into the computerized system.

RESULTS

The most common anomaly in Brazil was supernumerary fingers, classified as ICD-Q69.0, affecting 11,708 children, with a prevalence of 4.02 per 10,000 live births. Mothers aged over 40 years had a 36% higher prevalence of having children with CAUL than mothers under 40 years old (OR = 1.36; 95% CI 1.19-1.56). Newborns weighing ≥ 2,499 g were 2.64 times more likely to have CAUL compared to those weighing ≥ 2,500 g (OR = 2.64; 95% CI 2.55-2.73).

CONCLUSION

There was an observed increase in the reporting of CAUL cases over the decade studied. This trend serves as an alert for health agencies, as understanding the prevalence of CAUL and its associated factors is crucial for preventive medicine.

Prevalence, infant outcomes and gestational risk factors for transverse reduction deficiencies at or above the wrist: a population-based study

We identified individuals born in Norway between 1970 and 2019 with transverse reduction deficiency at or above the wrist (TRDAW) from the Medical Birth Registry of Norway and from the CULA (congenital upper limb anomaly) North Oslo Registry. Infant outcomes and parental factors were compared for 202 individuals with TRDAW to 2,741,013 living individuals without TRDAW born during the same period. We found an overall TRDAW prevalence of 0.74/10,000. Infants with TRDAW had a higher risk for being small for gestational age, an Apgar score <7 and transfer to neonatal intensive care units after delivery. Nine of the infants with TRDAW had associated anomalies, most commonly in the lower limb, and at a higher proportion than the reference population. Other than twin pregnancies, we are unable to identify with certainty any other risk factors for TRDAW.Level of evidence: I.

Social and functional inclusion of an undergraduate student with unilateral upper limb agenesis: a case study

INTRODUCTION

The inclusion of health professionals who have some type of disability brings benefits, such as the increase in empathy that facilitates the relationship with patients. In this work, we present a case study on the inclusion of an undergraduate Dentistry student with upper limb agenesis.

PURPOSE

In order to improve the quality of life for people with upper limb agenesis, it is urgent to establish inclusion strategies in the educational field. This process included the use of assistive technologies to allow the manipulation of instruments used in the practice of dental clinical activities, enabling future Dentists with upper limb agenesis to have an equal education in relation to their academic peers.

CASE SELECTION

The case study presented in this work consists of the follow-up of G., a 23-year-old female Dentistry student. The developed adaptations were made using a low-temperature thermoplastic. The expert team that participated in this process was formed by three occupational therapists and three Dentistry professors. The process included several stages, being the last one the integration, in which training sessions were performed.

OUTCOMES

The process was accessed using two main tools: quantitative questionnaires and qualitative interviews. After the proposed intervention, the volunteer presented a gradual evolution in her occupational performance with the use of most adaptations, promoting her functional training.

DISCUSSIONS

Most adaptations allowed G. to perform the activities satisfactorily, with the precision inherent to these tasks, even with little training time.

CONCLUSIONS

This case study demonstrates the high applicability of the proposed technologies.

The Impact on Families of Children With Congenital Upper Extremity Differences

PURPOSE

To investigate the impact on caregivers of caring for a child with congenital upper extremity differences.

METHODS

In this cross-sectional study, caregivers of patients enrolled in the multi-institutional Congenital Upper Limb Difference (CoULD) registry were contacted. Demographic information and the Impact on Family Scale (IOFS), a validated measure of perceived caregiver strain, were collected. Patient-reported outcome measures from the CoULD registry, the Pediatric Outcomes Data Collection Instrument (PODCI), and Patient-Reported Outcomes Measurement Information System (PROMIS) were also analyzed for correlation with IOFS.

RESULTS

Two hundred ninety-nine caregivers participated. Factors with significantly stronger impact on family included public insurance; bilateral upper extremity involvement; household income of $20,000-40,000; additional musculoskeletal diagnosis; and a single adult caregiver household. There was a significantly increased subcategory of IOFS-Finance score for distant travel to see the surgeon. Additionally, all categories of the PODCI (upper extremity, mobility, sports, pain, happiness, and global) demonstrated a negative correlation with IOFS. PROMIS upper extremity and peer relations also demonstrated an inverse relationship with IOFS, whereas PROMIS pain interference had a positive correlation with IOFS. The overall IOFS for children with CoULDs was greater than previously reported for children with brachial plexus birth injury, and less than cerebral palsy and congenital heart disease.

CONCLUSIONS

Caregivers of children with congenital upper extremity differences report a significant impact on family life. Socioeconomic factors, such as economically disadvantaged or single-caregiver households, and clinical factors, such as bilateral upper extremity involvement, correlate with greater family impact. These findings represent opportunities to identify at-risk families and underscore the importance of caring for the whole family through a multidisciplinary approach.

TYPE OF STUDY/LEVEL OF EVIDENCE

Prognostic II.

Investigating the role connective tissue fibroblasts play in the altered muscle anatomy associated with the limb abnormality, Radial Dysplasia

Radial dysplasia (RD) is a congenital upper limb birth defect that presents with changes to the upper limb anatomy, including a shortened or absent radius, bowed ulna, thumb malformations, a radially deviated hand and a range of muscle and tendon malformations, including absent or abnormally shaped muscle bundles. Current treatments to address wrist instability caused by a shortened or absent radius frequently require an initial soft tissue distraction intervention followed by a wrist stabilisation procedure. Following these surgical interventions, however, recurrence of the wrist deviation remains a common, long-term problem following treatment. The impact of the abnormal soft connective tissue (muscle and tendon) anatomy on the clinical presentation of RD and the complications following surgery are not understood. To address this, we have examined the muscle, fascia and the fascial irregular connective tissue (ICT) fibroblasts found within soft connective tissues, from RD patients. We show that ICT fibroblasts isolated from RD patients are functionally abnormal when compared to the same cells isolated from control patients and secrete a relatively disordered extracellular matrix (ECM). Furthermore, we show that ICT fibroblast dysfunction is a unifying feature found in RD patients, even when the RD clinical presentation is caused by distinct genetic syndromes.

Demographic and clinical characteristics of children with limb loss in Saudi Arabia: A retrospective study

PURPOSE

The aim of this study was to describe the demographic and clinical characteristics of children with limb loss in Saudi Arabia.

METHODS

This is a retrospective study on children attending a limb loss clinic in a tertiary hospital in Riyadh, Saudi Arabia, between July 2012 and June 2020. Descriptive statistics were computed to describe the sample characteristics. A Chi-Squared test was conducted to explore the relationship between a child's sex with the type of limb loss (congenital or acquired) and extent of limb loss (major and minor) and the association between child's age and the mechanism of injury in traumatic limb loss.

RESULTS

A total of 122 children aged 2-16 years were included of whom 52% were boys. Congenital limb loss represented 57% of the sample with upper extremity loss accounting for 63.7% of all limb loss in this type. Trauma-related limb loss represented the most frequent etiology (88.2%) in the acquired limb loss group. Road traffic accidents accounted for 51.7% of the mechanism of injuries in trauma-related limb loss. Child's sex was not associated with the type of limb loss nor the extent of limb loss ( p > 0.05). In addition, child's age was not associated with the mechanism of injury in traumatic limb loss ( p > 0.05).

CONCLUSION

Child's sex was not a determinant of type nor the extent of limb loss. Most of the acquired limb loss was trauma-related with road traffic accidents as the most common mechanism of injury. The findings of this study illuminate the importance of ongoing prosthetic care for children with a limb loss because young children may require multiple prostheses as they grow in age and size.

Complications after radial polydactyly surgery: analysis, prevention and management

Long-term follow-up after surgical correction of patients with radial polydactyly might reveal unexpected or undesired outcomes that are accentuated by growth. It should be stressed that assessment of outcomes differs considerably by the system used. Preoperative examination can elucidate the underlying pathological anatomy of these anomalies and consequently, these anatomical differences should be corrected as much as possible during the first operation to prevent worse outcomes at long-term follow-up. In various long-term studies, the reoperation rate was in the range of 7%-28%, with the most common reasons being deviation, instability, nail deformity and suboptimal appearance. Most unfavourable results occur during growth and are frequently revealed only at longer-term follow-up. Concentration of care to a few centres is advised since these malformations occur in small numbers and experienced surgeons tend to have better results. Consensus on the used assessment system and multicentred studies are essential in future to better understand how we can prevent reoperations.

Prevalence of craniosynostosis in Finland, 1987-2010: A population-based study

BACKGROUND

Craniosynostosis is a prevalent craniofacial malformation in Finland; however, comprehensive population-based epidemiological data are limited. This study aimed to estimate the total and birth prevalence of craniosynostosis in Finland from 1987 to 2010 and examine temporal trends.

METHODS

We collected the data from nationwide registers maintained by the Finnish Institute for Health and Welfare and Statistics Finland, as well as treating hospitals, encompassing live births, stillbirths, terminations for fetal anomalies, and infant deaths with suspected or diagnosed craniosynostosis or skull deformation. A craniofacial surgeon and a clinical geneticist reviewed 1878 medical records for diagnostic confirmation.

RESULTS

Out of 877 craniosynostosis cases, 83% were single-suture synostoses (all live births), 10% craniosynostosis syndromes, and 7% multisutural non-syndromic synostoses. Live birth prevalence from 1987 to 2010 was 6.0/10,000 live births, ranging from 5.0/10,000 in 1987 to 7.5/10,000 in 2010. Total prevalence, including live births, stillbirths, and terminations, varied from 5.0/10,000 in 1987 to 8.0/10,000 in 2010. Sagittal synostosis was the most common synostosis, with a prevalence of 3.9/10,000 live births, followed by metopic (0.6/10,000), unicoronal (0.4/10,000), and unilambdoid (0.1/10,000) synostoses.

CONCLUSIONS

The total combined prevalence of all craniosynostosis types significantly increased driven by a nonsignificant rise across all subgroups and a significant increase in the syndrome group. In live births increase was significant only within the syndrome subgroup, primarily due to an increase in Muenke syndrome patients. The rising prevalence of syndromes necessitates further investigation. Contrasting with trends in Europe, Australia, and the USA, Finland showed no significant increase in metopic craniosynostosis.

Patient-reported function, quality of life and prosthesis wear in adults born with one hand: a national cohort study

We invited individuals aged above 16 years with a congenital transverse reduction deficiency at and above the wrist born in Norway between 1970 and 2006 to complete the short version of the Disabilities of the Arm, Shoulder and Hand Outcome Measure, the 5-Level EuroQoL-5-Dimension instrument, the RAND 36-Item Short Form Health Survey and a single-item questionnaire on arm function, appearance, pain and prosthesis wear. Of 154 eligible participants, 58 (38%) responded. Their scores were not different from the general population. All had been offered prostheses, and 56 (97%) had been fitted at a median age of 1 year (interquartile range 0-2.8). Of the participants, 37 (64%) were still prosthesis wearers, while 21 (36%) were non-wearers or using gripping devices only. Prosthesis wearers had higher levels of 'vitality' as assessed by the RAND-36 and rated their arm appearance higher, but there were no other score differences, indicating that prosthesis rejection is not associated with worse functional outcomes.Level of evidence: III.

Maternal Cigarette Smoking and Congenital Upper and Lower Limb Differences: A Systematic Review and Meta-Analysis

Maternal smoking during pregnancy has been associated with adverse effects on foetal development, including congenital limb anomalies. This systematic review aimed to provide an updated assessment of the association between maternal smoking during pregnancy and the risk of congenital limb anomalies. A systematic search was conducted to identify relevant studies published up to February 2023. Studies reporting on the relationship between maternal smoking during pregnancy and congenital digital anomalies or congenital limb reduction defects were included. Two independent reviewers screened the studies, extracted data, and assessed the quality of the included studies. Meta-analyses were performed to estimate the pooled odds ratios with 95% confidence intervals using fixed and random-effects models. In total, 37 publications comprising 11 cohort and 26 case-control studies were included in the systematic review. The meta-analysis demonstrated a significant increased risk of congenital limb reduction defects (pooled OR: 1.27, 95% CI: 1.18-1.38) in infants born to mothers who smoked during pregnancy. Similarly, a significant relationship was observed for the development of polydactyly/syndactyly/adactyly when considered as a single group (pooled OR: 1.32, 95% CI: 1.25-1.40). Yet, in contrast, no significant association was observed when polydactyly (pooled OR: 1.06, 95% CI: 0.88-1.27) or syndactyly (pooled OR: 0.91, 95% CI: 0.77-1.08) were considered individually. This systematic review provides updated evidence of a significant relationship between maternal smoking during pregnancy and increased risk of congenital limb anomalies. These findings highlight the potential detrimental effects of smoking on foetal limb development and underscore the importance of smoking cessation interventions for pregnant women to mitigate these risks.

Factors affecting hand cosmesis and the aesthetic impact of surgery on congenital hand differences in Finland

We assessed the appearance and cosmetic impact of surgery in congenitally different hands in Finland. A questionnaire was sent to 1165 respondents (786 female) with a mean age of 33 years (range 3-84). Participants were shown nine image pairs and seven pairs of pre- and postoperative images twice in a random order and asked to choose the more cosmetically pleasing one. We found that the appearance and number of fingers had an important aesthetic role, with higher number and more normal appearing digits consistently scoring higher than its counterpart (range 59-99%). Postoperative appearances were perceived as better than preoperative ones in syndactyly (98%), thumb duplication (92%), cleft hand (93%) and radial dysplasia (99%). Toe transfer and pollicization had little impact on cosmesis. This study demonstrated that surgery could improve cosmesis in congenitally different hands and overall, most respondents prefer an appearance that is as close as possible to normality. Level of evidence: IV.

Prenatal radiographic evaluation of congenital transverse limb deficiencies: A scoping review

BACKGROUND

Congenital transverse deficiencies are horizontal deficiencies of the long bones that occur with a reported incidence as high 0.38%. They can occur alone or represent a manifestation of a various clinical syndromes. Diagnosis has traditionally comprised of conventional radiography and prenatal imaging studies. There has been much advancement regarding prenatal imaging modalities to allow for early diagnosis and appropriate treatment.

AIM

To summarize the current state of knowledge on congenital transverse limb deficiencies and to provide an update regarding the radiographic evaluation of congenital transverse limb deficiencies.

METHODS

This IRB-exempt scoping review followed the PRISMA-ScR checklist for scoping reviews strictly. Five search engines were searched for a total of 265 publications. Four authors reviewed these during the screening process. Of these, 51 studies were included in our article. Prenatal magnetic resonance imaging (MRI), 3D Ultrasound, and multidetector Computed tomography (CT) exist are emerging modalities that have the potential to improve diagnosis.

RESULTS

Use of the appropriate classification system, three-dimensional ultrasonography with a maximum intensity projection, and appropriate use of prenatal MRI and prenatal CT can improve diagnosis and inter-provider communication.

CONCLUSION

Further scholarly efforts are required to develop improve standardized guidelines regarding the pre-natal radiographic evaluation of congenital limb deficiencies.

Amelia and phocomelia in Finland: Characteristics and prevalences in a nationwide population‐based study

BACKGROUND

Amelia and phocomelia represent severe limb reduction defects. Specific epidemiologic data on these defects are scarce. We conducted a descriptive analysis of prevalence data in Finland during 1993-2008 to clarify the epidemiology nationwide in a population-based register study. We hypothesized that increasing maternal age would affect the total prevalence of each disorder.

MATERIALS AND METHODS

We collected information on all fetuses and infants affected by amelia and phocomelia during 1993-2008 from the National Register of Congenital Malformations in Finland. The clinical, laboratory, autopsy, and imaging data were re-evaluated where available for all cases found.

RESULTS

A total of 23 amelia and 7 phocomelia patients were identified. Thalidomide was not an etiological factor in any of the cases. The total prevalence of amelia was 2.43 per 100,000 births. The live birth prevalence was 0.63 per 100,000 live births. The total prevalence of phocomelia was 0.74 per 100,000 births, and the live birth prevalence was 0.53 per 100,000 live births. Infant mortality in amelia and phocomelia was 67% and 60%, respectively.

CONCLUSIONS

Infant mortality is high among amelia and phocomelia. Most cases had other major associated anomalies, but syndromic amelia cases were rare. Total prevalences were higher than previously reported and showed an increase in prevalence toward the end of the study period. The percentage of elective terminations of pregnancy for these disorders is high. While isolated cases are rare, they most likely present a better prognosis. Thus, correct diagnosis is essential in counseling for possible elective termination.

Novel Use of a Shoulder Spica: Treatment for Midshaft Humerus Fracture in the Presence of Limb Deficiency

Pediatric midshaft humerus fractures are typically managed with a hanging arm cast, Sarmiento bracing, coaptation splint, or a combination of these treatment options. Here we report a novel use of a shoulder spica cast in the treatment of a midshaft humerus fracture in the presence of limb deficiency. Current treatments proved unsuccessful in maintaining adequate alignment, specifically the varus deformity of the fracture. A shoulder spica was able to successfully maintain acceptable alignment throughout the duration of the patient's healing process. This nontraditional use of a shoulder spica cast shows the practicality of its ability to be utilized for the treatment of unique upper extremity orthopedic obstacles.

Epidemiology of Congenital Hand Differences at a Tertiary Hospital in Southern India – Establishment of a New Registry and Assessment Using Both the Swanson/IFSSH and the Oberg, Manske and Tonkin Classifications

Background: In resource challenged nations, the true magnitude of the congenital hand differences (CHD) remain unknown due to a lack of nation-wide surveillance system. We created a hospital-based registry system with the aim to determine the prevalence and distribution of CHD and compare the Swanson/IFSSH (SI) and Oberg, Manske and Tonkin (OMT) classifications.

Methods: Data of children aged 0 to 18 years with CHD was entered into the online registry and classified based on the SI and OMT classifications from January 2018 to December 2021. The prevalence and distribution of CHD and risk factors like family history were summarised using descriptive analysis. Syndromic and heredity associations were further analysed using Fischer exact test and odds ratio. Clustered columns were used to compare the two classification systems.

Results: A total of 307 patients with CHD presented during the study with a prevalence of 2.4/1,000 patients. Among them, 164 were unilateral, 21 were born of consanguineous marriages (7.6%) and 10 (3.6%) had a family history of CHD. Although not statistically significant, bilateral involvement was twice as likely to be hereditary compared to unilateral involvement. A total of 10 different syndromes were identified among 27 patients of which Holt–Oram syndrome was most common. The most common CHD was Radial longitudinal defificiency (111). A total of 82 (27%) children had other associated anomalies that could not be grouped as a syndrome. Two patients could not be classified using either SI or OMT classifications.

Conclusions: The online registry established an efficient way to store and analyse data related to CHD. It provides new information on its prevalence in South India, which is similar to the existing literature. Most of the CHD can be grouped in both the SI and OMT classifications. However, there still remains some conditions that are unclassifiable. There is a need for a national registry of CDH for effective management, funding and research.

Level of Evidence: Level IV (Epidemiological)

Congenital Upper Limb Deficiency with Oligodactyly: A Case Report

Congenital upper limb deficiency care and management have undergone drastic changes over the past 50 years. Given the low incidence of this defect nationwide, this case report adds to the existing database to analyze the etiological investigations, descriptive epidemiology, and trend detection. We present a case of a 2-month-old male child with congenital upper limb deficiency and explore the possible etiologies and difficulties during early diagnosis of such rare disorders in a low and middle-income countrries and present implications at the primary health care level to improve the prognosis. Poor nutrition during pregnancy due to an unplanned pregnancy is a possible cause. The prognosis is unfavourable due to sociocultural barriers. To address these limitations, it is pertinent to address disability-adequate knowledge among communities, promote early diagnosis, and timely rehabilitation using a multidisciplinary approach. Further, we provide a framework to optimize care.

Keywords

congenital limb deficiency; prevalence; upper limb defect.

How Risky Are Risk Factors? An Analysis of Prenatal Risk Factors in Patients Participating in the Congenital Upper Limb Differences Registry

Purpose

Risk factors for congenital upper limb differences (CoULDs) are often studied at the general population level. The CoULD registry provides a unique opportunity to study prenatal risk factors within a large patient sample.

Methods

All patients enrolled between June 2014 and March 2020 in the prospective CoULD registry, a national multicenter database of patients diagnosed with a CoULD, were included in the analysis. We analyzed self-reported, prenatal risk factors, including maternal smoking, alcohol use, recreational drug use, prescription drug use, gestational diabetes mellitus (GDM), and gestational hypertension. The outcome measures included comorbid medical conditions, proximal involvement of limb difference, bilateral involvement, and additional orthopedic conditions. Multivariable logistic regression was used to analyze the effect of the risk factors, controlling for sex and the presence of a named syndrome.

Results

In total, 2,410 patients were analyzed, of whom 72% (1,734) did not have a self-reported risk factor. Among the 29% (676) who did have at least 1 risk factor, prenatal maternal prescription drug use was the most frequent (376/2,410; 16%). Maternal prescription drug use was associated with increased odds of patient medical comorbidities (odds ratio [OR] = 1.43, P = .02). Gestational diabetes mellitus was associated with increased odds of comorbid medical conditions (OR = 1.58, P = .04), additional orthopedic conditions (OR = 1.51, P = .04), and proximal involvement (OR = 1.52, P = .04). Overall, reporting 1 or more risk factors increased the odds of patient comorbid medical conditions (OR = 1.42, P < .001) and additional orthopedic conditions (OR = 1.25, P = .03).

Conclusions

Most caregivers (72%) did not report a risk factor during enrollment. However, reporting a risk factor was associated with patient medical and orthopedic comorbidities. Of note, GDM alone significantly increased the odds of both these outcome measures along with proximal limb differences. These findings highlight the ill-defined etiology of CoULDs but suggest that prenatal risk factors, especially GDM, are associated with a higher degree of morbidity.

Type of study/level of evidence

Prognostic III.

Congenital Disorders of the Pediatric Thumb

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Surgical timing for pediatric trigger thumb treatment is controversial for numerous reasons including the potential for spontaneous resolution, the possibility of bilateral involvement, and anesthesia concerns regarding the developing brain. Hence, a reasonable approach is to delay the surgical procedure until the patient is ≥3 years of age.

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Preaxial polydactyly is usually unilateral and sporadic, with the most common reconstruction method consisting of excision of the diminutive thumb with preservation and soft-tissue reconstruction of the dominant thumb. The surgical procedure is typically performed around the patient age of 1 year to decrease the risks of anesthesia but allow reconstruction prior to the development of a tip-to-tip pinch.

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Triphalangeal thumb and thumb hypoplasia are often found in the setting of systemic anomalies such as Holt-Oram syndrome, thrombocytopenia absent radius syndrome, Fanconi anemia, VACTERL (vertebral anomalies, anal atresia, cardiac anomalies, tracheoesophageal fistula, renal defects, and limb anomalies), and/or Blackfan-Diamond anemia. As such, patients should receive adequate workup for these entities. A surgical procedure should be performed only once patients have been medically cleared.

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The status of the carpometacarpal joint in thumb hypoplasia determines whether reconstruction with first web space deepening, collateral ligament stabilization, and opponensplasty compared with index pollicization is performed.

Congenital hand differences: Prevalence among school going children in Mangalore city

Introduction

Congenital upper extremity anomalies are present in 1 in every 626 live births. They are mostly isolated phenomena but can also be associated with other congenital deformities and may be the only external feature of a syndromic entity. A study on it in India, especially the southern part, is limited. As the quality of life gets compromised, there is a need to identify and diagnose the anomalies at the earliest. Current study is aimed to identify congenital hand deformities among the school-going population in the coastal city of Mangalore.A cross sectional study was done in the schools in Mangalore city. By simple random sampling, 35 out of 70 schools were selected, and 10,000 children in age group of 5-15years were included by non-probability sampling after taking their consent from school authorities and parents. Data was analyzed by FISHER's exact test.

Result

41 cases of congenital hand anomalies were identified with 23 boys and 18 girls. Twelve children had bilateral involvement. 28 cases where of polydactyly followed by four cases of acrosyndactyly with constriction band, three cases each of syndactyly and camptodactyly,one case of lobster hand and one case each of transverse deficiency of hand and forearm. Associated lower limb anomalies were seen in 9 cases. Familial associations were seen in 6 cases, and 1 polydactyly child had a downs syndrome association. All cases[4cases] of acrosyndactyly with constriction band syndrome were operated at childhood, and most other deformities were unoperated. Polydactyly[duplication] tops the list and needs further studies to look into genetic, environmental, and regional variations.

Conclusion

The prevalence of congenital hand difference in Mangalore is 41 per 10000 school-going children examined. . A future national registry in India should be the way forward to assess the true prevalence and risk factors.

Pre-natal and post-natal diagnosis of congenital upper limb differences: The first 3 years of the Australian Hand Difference Register

AIMS

Children with a congenital upper limb difference (CoULD) are a diverse group who often require multidisciplinary care and long-term support for functional and social impacts. The Australian Hand Difference Register (AHDR) provides a national database of children born with a CoULD and aims to facilitate research and improve health care for affected children. Using data from the first 3 years of its operation, we analysed the demographic and clinical features of participating families, including type of CoULDs and the frequency of pre-natal and syndromic diagnoses.

METHODS

Families were recruited from tertiary plastic surgery, orthopaedic and genetics clinics, as well as by self-referral. Hand differences were classified by the consulting physician according to the Oberg-Manske-Tonkin classification system. Primary carers were invited to complete an online questionnaire covering demographic information, pregnancy and newborn outcomes and diagnostic details.

RESULTS

Between August 2017 and September 2020, 822 families consented and 320 questionnaires were reviewed. CoULDs were detected pre-natally in 66 (20.6%) and post-natally in 248 children (77.5%); data for 6 (1.9%) children were missing. The most common CoULDs were radial polydactyly, symbrachydactyly with ectodermal elements and radial longitudinal deficiency, hypoplastic thumb. Twenty-seven children (8.4%) had an associated syndrome, 7 diagnosed pre-natally and 19 post-natally; the most common were VACTERL association, Poland anomaly, Holt-Oram and ectrodactyly-ectodermal dysplasia-clefting syndromes.

CONCLUSIONS

The AHDR is a valuable resource for understanding the relative frequencies of CoULDs. Participation will assist future research into the diagnostic journeys of children with CoULDs, including risk factors, diagnosis and psychosocial impacts.

Symbrachydactyly

Symbrachydactyly is a rare congenital hand malformation in which a child is born with abnormally short digits that may be webbed, misshaped, or missing, and it is usually a unilateral condition. There is no standardized treatment algorithm for the management of symbrachydactyly. The function of the hand is often not adequate and requires early surgical intervention to restore useful prehension and appearance. This CME article presents a brief review of the embryology, history, classification and clinical presentation, and author’s experience of treating 19 children with symbrachydactyly over 10 years. Creation of thumb web, lengthening of thumb, and creating an opposition post results in prehension of hand with an improved quality of life.

Maternal risk factors for congenital limb deficiencies: A population-based case-control study

BACKGROUND

Risk factors for congenital limb deficiencies are poorly understood.

OBJECTIVE

To investigate risk factors for congenital limb deficiencies.

METHODS

We conducted a nationwide population-based case-control (1:5) study in Finland, using national registers on congenital anomalies, births, and induced abortions, cross-linked with data on maternal prescription medicine use obtained from the registers on Reimbursed Drug Purchases and Medical Special Reimbursements. Five hundred and four children with limb deficiencies (241 isolated, 181 syndromic, and 82 other associated anomalies) were identified, and 2,520 controls were matched to cases on residence and year of pregnancy. Non-syndromic cases (n = 323) were subdivided into longitudinal (n = 120), transverse (n = 123), intercalary (n = 24), mixed (n = 18), and unknown (n = 38) deficiencies.

RESULTS

Pregestational diabetes was associated with all limb deficiencies (adjusted odds ratio [OR] 12.71, 95% confidence interval [CI] 2.37, 68.25) and with isolated (OR 11.42, 95% CI 2.00, 64.60) deficiencies. Primiparity was associated with increased risk of congenital limb deficiencies among all cases (OR 1.49, 95% CI 1.15, 1.93), isolated cases (OR 1.46, 95% CI 1.09, 1.96), and among cases with longitudinal (OR 1.90, 95% CI 1.24, 2.90) and transverse deficiencies (OR 1.75, 95% CI 1.13, 2.70). Young maternal age (<25 years) was associated with all congenital limb deficiencies (OR 1.40, 95% CI 1.02, 1.90) and transverse deficiencies (OR 1.76, 95% CI 1.05, 2.96). Advanced maternal age (≥35 years) was associated with syndromic (OR 1.82, 95% CI 1.19, 2.78) and transverse deficiencies (OR 1.94, 95% CI 1.06, 3.57). Maternal antiepileptic medication was associated with all (OR 5.77, 95% CI 1.75, 19.04) and with isolated cases (OR 3.83, 95% CI 1.02, 14.34).

CONCLUSIONS

It is important that pregnant women taking medications, especially antiepileptics, or women with pregestational diabetes are carefully monitored with regard to the occurrence and risk of limb deficiencies in the fetus.

Radial Club Hand Treated by Paley Ulnarization Generation 3: Is this the New Centralization?

(1) Background: Patients treated with the two previous generations of ulnarization developed a bump related to the ulnar head becoming prominent on the radial side of the hand. To finally remedy this problem, a third generation of ulnarization was developed to keep the ulnar head contained. While still ulnar to the wrist center, the center of the wrist remains ulnar to the ulnar head, with the ulnar head articulating directly with the trapezoid and when present the trapezium. (2) Methods: Between 2019 and 2021, 22 radial club hands in 17 patients were surgically corrected with this modified version of ulnarization. (3) Results: In all 17 patients, the mean HFA (hand–forearm-angle) correction was 68.5° (range 12.2°–88.7°). The mean ulna growth was 1.3 cm per year (range 0.2–2 cm). There were no recurrent radial deviation deformities more than 15° of the HFA. (4) Conclusions: This new version of ulnarization may solve the problem of the ulna growing past the carpus creating a prominent ulnar bump. The results presented are preliminary but promising. Longer-term follow-up is needed to fully evaluate this procedure.

Congenital Upper Limb Differences Registry (CoULD): Registry Inclusion Effect

PURPOSE

To advance the understanding of the epidemiology and treatment outcomes of congenital upper limb differences, a multicenter registry for Congenital Upper Limb Differences (CoULD) was established. After 4 years of recruitment, we sought to examine whether the relative frequency of congenital conditions compares with prior cross-sectional research and how the data have matured over time by (1) comparing our registry population with previous studies in similar populations and (2) evaluating the change over time of relative frequencies of selected conditions within the CoULD registry cohort, specifically to investigate for registry inclusion effects.

METHODS

Data from the 2 founding centers in the CoULD registry were analyzed over a 4-year period. We compared patients included in the CoULD registry against 2 prior studies by matching each condition according to the Oberg-Manske-Tonkin classification system. The relative frequency of 4 representative conditions was calculated to evaluate change over time and to determine when the inception cohort effect diminished.

RESULTS

The CoULD cohort of 1,381 patients was found to have notable differences compared with a 1-year cross-sectional cohort from the U.S. Midwest and a Swedish birth registry. Each of these registries had differences from the CoULD population in prevalence for approximately 33% of the diagnosis categories. The CoULD registry identified and included more pathologies of late presentation and those that do not commonly require surgical care. Changes in relative frequencies of incident and prevalent conditions, the registry inclusion effect, occurred early and stabilized by the third year.

CONCLUSIONS

The CoULD registry captures a different relative frequency of conditions than prior studies in similar populations. The findings highlight the CoULD registry may be a more accurate representation of clinical practice in tertiary referral centers; however, it is important to note that there was a registry inclusion effect identified.

CLINICAL RELEVANCE

Inclusion criteria are an important consideration with any longitudinal data collection method and data should display stability prior to registry reporting.

A systematic review of the use of psychological assessment tools in congenital upper limb anomaly management

STUDY DESIGN

This study is a systematic review.

INTRODUCTION

Congenital upper limb anomalies (CULAs) are often associated with psychosocial difficulties including negative body image, low self-esteem, and withdrawal from social activities.

PURPOSE OF THE STUDY

The purpose of the study was to identify, describe, and evaluate all published psychosocial assessment tools used in the assessment and management of CULAs, to direct the use of these tools in clinical practice, and to identify areas requiring development.

METHODS

A systematic search of Medline, EMBASE, Pubmed, and PsychInfo databases was performed. In total, 23 studies were included for analysis. Data extracted included study and population characteristics, psychosocial measures utilized, psychosocial outcomes reported, and the reliability and validity of measures.

RESULTS

Seventeen patient-reported measures were identified. The most commonly used tool was a Likert scale (n =7) with satisfaction with appearance and function, the most commonly evaluated outcome (n = 18). Other evaluated domains included quality of life or psychosocial functioning (n = 9), self-image (n = 2), and psychological well-being (n = 5).

DISCUSSION AND CONCLUSIONS

There is no well-established, validated assessment tool in regular use to effectively address psychosocial outcomes for children with CULAs. Although the majority of children born with a CULA appear to adjust well, this is by no means the case for all children. There is a need for routine psychosocial evaluation preoperatively and postoperatively with long-term follow-up data to help direct patient-orientated management. A clear understanding of these, and how to measure them, is needed to help for a patient-centred, multidisciplinary, evidence-driven approach to CULA management.

Epidemiology of congenital upper limb anomalies in Korea: A nationwide population-based study

This study aimed to analyze the epidemiology of congenital upper limb anomalies (CULA) in Korea. We evaluated the incidence of each type of CULA, the presence of coexisting anomalies and the surgical treatment status in CULA patients. We conducted a retrospective cohort study of patients aged < 1 year between 2007 and 2016 who were registered with CULA in the Health Insurance Review and Assessment Service of Korea. In total, 10,704 patients had CULA, including 6,174 boys (57.7%) and 4,530 girls (42.3%). The mean annual incidence of CULA was 23.5 per 10,000 live births; it was significantly higher in boys than in girls (26.3 vs. 20.5, p < 0.001). Among the four categories of CULA—polydactyly, syndactyly, limb deficiency, and other anomalies—polydactyly was the most common. In total, 4,149 patients (38.8%) had other congenital anomalies and coexisting anomalies of the circulatory system (24.9%) were the most common. In total 4,776 patients (44.6%) underwent operative treatment for CULA within minimum three years of the diagnosis. The proportion of patients who underwent surgical treatment was significantly higher for polydactyly (73.4% vs. 16.8%, p < 0.001) and syndactyly (65.3% vs. 41.5%, p < 0.001), but it was significantly lower in limb deficiency (27.6% vs. 45.4%, p < 0.001) and other anomalies (10.0% vs. 69.8%, p < 0.001) than rest of CULA patients. Among the patients who had operations, 21.5% underwent multiple operations. The proportion of patients who underwent multiple operations was significantly higher in syndactyly (35.6% vs. 18.1%, p < 0.001), but it was significantly lower in polydactyly (4.0% vs. 95.5%, p < 0.001) and other anomalies (17.9% vs. 21.9%, p < 0.001) than rest of CULA patients. These results could provide a basis for estimating the national healthcare costs for CULA and the required number of CULA specialists.

Risk Factors and Prevalence of Limb Deficiencies Associated With Amniotic Band Sequence: A Population-based Case-control Study

BACKGROUND

Limb deficiencies associated with amniotic bands comprise a wide range of congenital anomalies. The association of maternal medication and the risk of amniotic band sequence (ABS) has not yet been addressed.

METHODS

This nationwide population-based case-control study used national registers on congenital anomalies, births and induced abortions, cross-linked with information on maternal prescription medicine use obtained from the registers on Reimbursed Drug Purchases and Medical Special Reimbursements. All cases with congenital limb deficiency associated with amniotic bands born between 1996 and 2008 were included in the study. Five controls without limb deficiency matched for residency and time of conception were randomly selected from the Medical Birth Register.

RESULTS

In total, 106 children with limb deficiency associated with ABS were identified and compared with 530 matched controls. Young maternal age (less than 25 y) increased the risk of limb deficiencies [odds ratio=1.72; 95% confidence interval (CI): 1.06, 2.80]. Primiparity was also associated with increased risk [adjusted odds ratio (aOR)=2.42; 95% CI: 1.52, 3.88]. After adjusting for maternal age, pregestational diabetes, and parity, maternal use of beta-blockers (adjusted OR=24.2; 95% CI: 2.57, 228) and progestogens (adjusted OR=3.79; 95% CI: 1.38, 10.4) during the first trimester of pregnancy significantly increased the risk of limb deficiencies associated with amniotic bands.

CONCLUSIONS

Primiparity significantly increased the risk of limb defects associated with amniotic bands. Also, a novel association on increased risk of ABS with maternal use of progestogens or beta-blockers during the first trimester of pregnancy was observed.

LEVEL OF EVIDENCE

Level III.

Prevalence and risk factors of radial ray deficiencies: A population-based case-control study

Radial ray deficiency is the most common congenital deficiency of the upper limb. The aim of our study was to investigate maternal risk factors for radial ray deficiencies. We conducted a nationwide population-based case-control study using national registers. All cases with a radial ray deficiency born between 1996 and 2008 were included in the study and compared with five controls without limb deficiency. In total, 115 (10 isolated, 18 with multiple congenital anomalies, and 87 syndromic) cases with radial ray deficiencies were identified and compared with 575 matched controls. The total prevalence in Finland was 1.22 per 10,000 births. No significant risk factors were observed for nonsyndromic cases. In the syndromic group, advanced maternal age (≥35 years) increased the risk of radial aplasia (aOR 2.45, 95% CI 1.37-4.36), and a similar association was observed with multiple pregnancy (aOR 2.97, 1.16-7.62) and male sex (aOR 1.96, 1.18-3.25). Valproic acid was also a risk factor (p = .002). In conclusion, novel associations in the syndromic group of advanced maternal age and multiple pregnancy and increased risk of radial ray deficiencies were observed. Also, early reports on increased risk of RRD associated with valproate and male sex were supported by our results.

Association of Radial Longitudinal Deficiency and Thumb Hypoplasia: An Update Using the CoULD Registry

BACKGROUND

Deficiency of the radial aspect of the forearm and hand is the most common congenital longitudinal deficiency of the upper limb. Radial longitudinal deficiency is associated with several named syndromes. The purpose of the present study was to explore patterns of radial longitudinal deficiency and thumb hypoplasia in syndromes and to examine the severity of these differences across various syndromes.

METHODS

Data were collected from the Congenital Upper Limb Differences (CoULD) registry. Congenital differences are classified in the registry with use of the Oberg-Manske-Tonkin (OMT) classification system. Diagnosis of a syndrome by a physician as noted in the CoULD registry was recorded. Thumb deficiency and radial deficiency were classified according to the modified versions of the Blauth criteria and the Bayne and Klug criteria, respectively.

RESULTS

We identified 259 patients with 383 affected limbs with radial deficiency. Eighty-three of these patients had a diagnosed syndrome. The severity of radial deficiency was correlated with the severity of thumb deficiency. The Kendall tau coefficient indicated significant correlation between radial severity and thumb severity (tau = 0.49 [95% confidence interval = 0.40 to 0.57]; p < 0.05). Subjects with a syndrome were twice as likely to have bilateral deficiency and 2.5 times more likely to have both radial and thumb deficiency compared with subjects without a syndrome. Subjects with VACTERL syndrome (vertebral defects, anal atresia, cardiac anomalies, tracheoesophageal fistula, renal anomalies, and limb defects) had patterns of thumb and radial deficiency similar to the general cohort, whereas subjects with Holt-Oram syndrome, TAR (thrombocytopenia absent radius) syndrome, and Fanconi anemia demonstrated varied presentations of thumb and radial deficiency.

CONCLUSIONS

The present study investigated the characteristics of patients with radial longitudinal deficiency and thumb hypoplasia. Our results support the findings of previous research correlating the severity of radial deficiency with the severity of thumb deficiency. Furthermore, we identified characteristic features of patients with radial longitudinal deficiency and associated syndromes.

Phenotypic and genetic spectrum of isolated macrodactyly: somatic mosaicism of PIK3CA and AKT1 oncogenic variants

BACKGROUND

Isolated macrodactyly is a severe congenital hand anomaly with functional and physiological impact. Known causative genes include PIK3CA, AKT1 and PTEN. The aim of this study is to gain insights into the genetics basis of isolated macrodactyly.

RESULTS

We enrolled 24 patients with isolated macrodactyly. Four of them were diagnosed with Proteus syndrome based on skin presentations characteristic to this disease. Targeted next-generation sequencing was performed using patients' blood and affected tissues. Overall, 20 patients carry mosaic PIK3CA pathogenic variants, i.e. p.His1047Arg (N = 7), p.Glu542Lys (N = 6), p.Glu545Lys (N = 2), p.His1047Leu (N = 2), p.Glu453Lys (N = 1), p.Gln546Lys (N = 1) and p.His1047Tyr (N = 1). Four patients who met the diagnostic criteria of Proteus syndrome carry mosaic AKT1 p.Glu17Lys variant. Variant allele frequencies of these mosaic variants obtained through next-generation sequencing range from 10 to 33%. In genotype-phenotype correlation analysis of patients with PIK3CA variant, we found that patients with the macrodactyly of the lower limbs tend to carry PIK3CA variants located in the helical domain (P = 0.005).

CONCLUSIONS

Mosaic PIK3CA and AKT1 variants can be found in all of our samples with isolated macrodactyly. Insights into phenotypic and genetic spectrum of isolated macrodactyly may be helpful in perusing a more precise and effective management of isolated macrodactyly.

Etiological diagnosis in limb reduction defects and the number of affected limbs: A population-based study in the Northern Netherlands

Limb reduction defects (LRDs) that affect multiple limbs are considered to be more often heritable, but only few studies have substantiated this. We aimed to investigate if an etiological diagnosis (genetic disorder or clinically recognizable disorder) is more likely to be made when multiple limbs are affected compared to when only one limb is affected. We used data from EUROCAT Northern Netherlands and included 391 fetuses and children with LRDs born in 1981–2017. Cases were classified as having a transverse, longitudinal (preaxial/postaxial/central/mixed), intercalary, or complex LRD of one or more limbs and as having an isolated LRD or multiple congenital anomalies (MCA). We calculated the probability of obtaining an etiological diagnosis in cases with multiple affected limbs versus one affected limb using relative risk (RR) scores and Fisher's exact test. We showed that an etiological diagnosis was made three times more often when an LRD occurred in multiple limbs compared to when it occurred in one limb (RR 2.9, 95% CI 2.2–3.8, p < 0.001). No genetic disorders were found in isolated cases with only one affected limb, whereas a genetic disorder was identified in 16% of MCA cases with one affected limb. A clinically recognizable disorder was found in 47% of MCA cases with one affected limb. Genetic counseling rates were similar. We conclude that reduction defects of multiple limbs are indeed more often heritable. Genetic testing seems less useful in isolated cases with one affected limb, but is warranted in MCA cases with one affected limb.

Oberg-Manske-Tonkin Classification of Congenital Upper Extremity Anomalies: The First Report From Turkey

PURPOSE

Although the Oberg-Manske-Tonkin (OMT) classification has been recommended by the International Federation of Societies for Surgery of the Hand owing to some insufficiencies of the Swanson classification system, it has not achieved a universal adoption by hand surgeons. In this study, we hypothesize that the OMT classification can be used easily to classify congenital upper extremity anomalies. We also aim to make epidemiological analysis of congenital upper extremity anomalies with the OMT classification and to compare the applicability of the OMT and the Swanson classifications.

METHODS

We retrospectively analyzed 711 patients and 833 extremities operated on between 2012 and 2017. Photographs, plain x-rays, and brief medical histories of the patients were evaluated by 4 plastic surgeons. Two independent evaluations were made by each surgeon in 1-month interval using these classification systems.

RESULTS

Total number of upper extremity anomalies recorded was 1050. Of the 711 patients operated on, 122 had bilateral anomalies. The anomalies were identified in 833 extremities because many extremities had more than a single diagnosis. We were able to classify all of the anomalies within the OMT classification. The OMT classification gives better reliability results compared with the Swanson classification according to intrarater and interrater reliabilities.

CONCLUSIONS

Compared with the Swanson classification system based on phenotypic evaluation of the extremity, the OMT classification system is easier to apply and the association of the anomaly with the embryologic origin during evaluation is possible. We believe that multiple studies from different centers will boost the international acceptance of the OMT classification.

Radial Longitudinal Deficiency: Severity Differences Between U.S. and Japanese Cohorts

PURPOSE

Radial longitudinal deficiency (RLD) presents on a spectrum of severity and associated diagnoses. The literature is limited in describing patient presentation without comparative data between countries. In a study comparing 2 cohorts of patients, 1 in the United States and 1 in Japan, we hypothesized that there would be a similar presentation of forearm deficiency severity, thumb hypoplasia severity, and associated syndromes between the 2 cohorts.

METHODS

Patients with RLD were identified via a comprehensive chart review at 2 pediatric hospital cohorts, 1 in the United States and 1 in Japan, capturing patients presenting over 15 years. We assessed RLD and thumb hypoplasia severity via a modified Bayne and Klug and modified Blauth classifications. The relationship between these 2 diagnoses and the presence of common medical conditions were evaluated and correlated.

RESULTS

A total of 194 Japanese patients with 290 involved extremities were compared with 107 U.S. patients with 174 involved extremities. The U.S. cohort had a significantly more severe RLD, and a higher rate of bilaterality (63% vs 50%, respectively). A total of 131 Japanese patients (68%) and 41 U.S. patients (38%) had associated medical syndromes/associations, most frequently vertebral abnormalities, anal atresia, cardiac abnormalities, tracheoesophageal fistula and/or esophageal atresia, renal agenesis and dysplasia, and limb defects (VACTERL; 46 Japanese, 14 U.S.), Holt-Oram (44 Japanese, 5 U.S.), and thrombocytopenia absent radius syndrome (0 Japanese, 12 U.S.). Correlation analysis showed that increased RLD severity was associated with increased thumb hypoplasia severity in both groups, with 95% of modified Bayne and Klug III, IV, or V patients having severely affected thumbs (type IIIb, IV, or V).

CONCLUSIONS

The U.S. patients had a more severe RLD and a higher rate of bilaterality. Japanese patients had a higher incidence of associated syndromes and radial polydactyly. Both cohorts showed that increased forearm severity was associated with more severe thumb hypoplasia.

TYPE OF STUDY/LEVEL OF EVIDENCE

Differential diagnosis/symptom prevalence study III.

Appearance of congenital hand anomalies

Background and objective:

Impact of appearance of congenital hand anomalies has not previously been reported. The purpose of this study was to describe the common perception about how different congenitally malformed hands look.

Methods:

We developed a questionnaire in a game format to evaluate the appearance of different hands. Altogether 1450 (954 females) 4- to 84-year-old residents (296 children) of two European and one Asian (n = 102) country were asked to rate the appearance of different looking hands on a five-point pictorial Likert-type scale. Standardized photographs of the dorsal aspect of 17 different congenitally malformed non-operated hands and a normal hand were presented to respondents. Significance of age, gender, nationality, and profession of the respondents was assessed.

Results:

The respondents’ ranking order of the hands was nearly consistent. The normal hand (mean = 4.43, standard deviation = 0.85, Md = 5) and clinodactyly (mean = 4.37, standard deviation = 0.86, Md = 5) were perceived to have the best appearance. Symbrachydactyly (mean = 1.42, standard deviation = 0.68, Md = 1) and radial club hand (mean = 1.40, standard deviation = 0.68, Md = 1) received the lowest scores. Adults rated the appearance of hands higher than children regarding 14 hands, females higher than men regarding 15 hands, and Europeans higher than Asians in 4 hands (p < 0.05, respectively). Europeans rated four-finger hand (mean = 3.21, standard deviation = 1.18, Md = 3) better looking than six-finger hand (mean = 2.92, standard deviation = 1.18, Md = 3, p < 0.005), whereas Asians gave higher scores to six-finger hand (mean = 2.66, standard deviation = 1.26, Md = 3) compared to four-finger hand (mean = 2.51, standard deviation = 1.14, Md = 2). Medical doctors and nurses gave higher scores compared to the other profession groups, school children, and high school students in five hands (p < 0.05).

Conclusions:

A normal hand is perceived distinctly better looking than most congenitally different hands. Different malformations’ appearance was ranked very coherently in the same order despite of participants’ age, gender, nationality, or profession. Asians seem to prefer an additional digit to a four-finger hand.

Perinatal outcomes of infants with congenital limb malformations: an observational study from a tertiary referral center in Central Europe

Background

Congenital limb malformations are rare, and their perinatal outcomes are not well described. This study analyzed the perinatal outcomes of infants with congenital limb malformations.

Methods

All infants with congenital limb malformations who underwent prenatal assessment and delivery at our tertiary referral center from 2004 through 2017 were retrospectively identified. Neonatal outcome parameters were assessed, and the predictors of worse perinatal outcomes were determined.

Results

One hundred twenty-four cases of congenital limb malformations were identified, of which 104 (83.9%) were analyzed. The upper limb was affected in 15 patients (14.4%), the lower limb in 49 (47.1%), and both limbs in 40 (38.5%) patients. A fetal syndrome was identified in 66 patients (63.5%); clubfoot and longitudinal reduction defects were the most frequent malformations. In total, 38 patients (36.5%) underwent termination, seven (6.7%) had stillbirth, and 59 (56.7%) had live-born delivery. Rates of preterm delivery and transfer to the Neonatal Intensive Care Unit were 42.4 and 25.4%, respectively. Localization of the malformation was a determinant of perinatal outcome (P = .006) and preterm delivery (P = .046).

Conclusions

Congenital limb malformations frequently occur bilaterally and are associated with poor perinatal outcomes, including high rates of stillbirth and preterm delivery. Multidisciplinary care and referral to a perinatal center are warranted.

Convergent Validity of PODCI and PROMIS Domains in Congenital Upper Limb Anomalies

PURPOSE

This study evaluates the perceived functional and psychosocial impact of upper limb congenital anomalies prior to surgical intervention, utilizing the Pediatric Outcomes Data Collection Instrument (PODCI) and Patient-Reported Outcomes Measure Information System (PROMIS) domains. We hypothesized that scores will be in the normal range and that the 2 outcomes measures will have strong convergent validity.

METHODS

A multicenter prospectively collected database of congenital upper limb patients, the CoULD (Congenital Upper Limb Differences) study group, was utilized. Demographic information was collected, and anomalies were classified by the Oberg-Manske-Tonkin (OMT) classification. Scores for PODCI subscales of Upper Extremity (UE) function, Pain/comfort, and Happiness and PROMIS domain of UE function, Pain, Depression, Anxiety, and Peer relations were collected. Ceiling and floor effects and convergent validity for PODCI and PROMIS domains were calculated.

RESULTS

Three hundred fifty-nine patients, average age 10 years and 55% male, were included. Two hundred forty-one patients had a malformation of the entire limb and 231 had a hand plate malformation. Four patients had a deformation, 118 dysplasia, and 45 a syndrome. There was no difference between the PODCI and the PROMIS ceiling or floor effects for the UE domains. The ceiling effect for PROMIS Pain domain (46%) was similar to the floor effect of the PODCI Pain subscale and no difference was seen between the floor effect of PODCI Happiness and PROMIS Depression domains. Convergent validity was obtained for the UE and Pain domains, and also between PODCI Happiness and PROMIS Depression subscales.

CONCLUSIONS

The PROMIS domains for UE function, Pain, and Depression are comparable with PODCI scores in congenital upper extremity anomalies.

CLINICAL RELEVANCE

Given the large burden placed on patients with the lengthy PODCI questionnaire, consideration of replacing the PODCI with the more quickly obtained PROMIS scores may reduce patient burden and provide similar information in this population.

Epidemiology of limb reduction defects as registered in the Medical Birth Registry of Norway, 1970-2016: Population based study

Background

Following the Thalidomide disaster, the Medical Birth Registry of Norway (MBRN) was established in 1967, with epidemiological surveillance of congenital anomalies as one main aim. Limb reduction defects (LRD) constitute a rare and heterogeneous anomaly group, where correct registration and classification is important for surveillance and research. We aimed at reviewing and recoding LRD cases in the MBRN using the same classification system for all years, and evaluate time trends, characteristics and risk factors, 1970–2016.

Methods

After reviewing and recoding LRD cases using International Classification of Diseases (ICD), 10^th version, for all years, time trends, association with major anomalies, risk factors and infant outcomes were calculated. Generalized linear models for the binomial family with log link gave relative risks (RR) with 95% confidence intervals (CI). Classification of LRD as suggested by European surveillance of congenital anomalies (EUROCAT) was attempted.

Results

Overall LRD prevalence, 1970–2016, was 4.4 per 10 000, slightly increasing during 1970–1981, followed by relatively stable rates. There were more defects in upper than lower limbs. Defects in hands/fingers were most common, but unspecific descriptions prevented classification of LRD according to EUROCAT. A majority of cases had associated anomalies, the most common being other limb defects, followed by cardiac defects and anomalies in the nervous and digestive systems. From 1999, 26% of LRD cases were terminated, more than 90% of these had associated major anomalies. Stillbirth, neonatal and infant mortality were higher among infants with LRD, also related to associated anomalies. Pre-gestational diabetes was associated with a more than three times increased risk of offspring total LRD, while no association with maternal epilepsy was found. Taking folate/multivitamin supplements before and/or during pregnancy was associated with lower risk of offspring LRD (adjusted RR 0.7; 95% CI 0.6–0.9), while daily smoking did not significantly increase the risk.

Conclusion

The MBRN now has information on LRD coded by ICD-10 from 1970, but information is not specific enough to use other recommended classification systems. Collecting radiographic descriptions and/or more details from hospital records would improve the quality of the registry data. Taking folate supplements before/during pregnancy may reduce the risk of offspring LRD.

RADIATE - Radial Dysplasia Assessment, Treatment and Aetiology: protocol for the development of a core outcome set using a Delphi survey

BACKGROUND

Radial dysplasia (RD) is a disfiguring, potentially disabling congenital upper limb anomaly. Multiple surgical techniques are in current use, with little agreement on the optimal treatment approach. At present, no core outcome set exists specifically for RD, and the literature is dominated by retrospective case series. A recent systematic review by this group demonstrated significant heterogeneity on which outcomes are measured and how they are measured.

METHODS/DESIGN

The RADIATE study will conduct a three-round online Delphi process, involving adult RD patients, the parents of children with RD, hand surgeons and hand therapists. The initial list of outcomes was drawn from our recent systematic review and will be supplemented by suggestions from the stakeholder groups. Following the Delphi process, outcomes that meet the consensus in definition will be ratified at a final consensus meeting. We will then follow the COSMIN guidelines to select outcome measurement instruments. Where appropriate, these will overlap with the outcome measures specified in the forthcoming standard set for congenital upper limb anomalies published by the International Consortium for Health Outcomes Measurement.

DISCUSSION

The Radial Dysplasia Assessment, Treatment and Aetiology (RADIATE) study aims to address the uncertainty in the treatment of RD, and to begin to answer the question 'What is the most appropriate treatment of the forearm and hand for children with RD?' by establishing a core outcome set.

TRIAL REGISTRATION

COMET initiative study, 902 . Registered in May 2016.

Symbrachydactyly: Finger nubbins are not always amniotic band disruption sequence

Although congenital hand anomalies associated with finger nubbins may be produced by amniotic band disruption sequence (ABDS), symbrachydactyly should be considered in the differential diagnosis. ABDS usually affects more than one limb but symbrachydactyly largely is limited to one upper extremity, and has five distinct clinical presentations: short-fingered, atypical cleft, monodactylous, peromelic, and a forearm proximal transverse deficiency. This article discusses the diagnosis of symbrachydactyly compared with ABDS and outlines plans for managing patients with symbrachydactyly.

Hospital Care and Surgical Treatment of Children With Congenital Upper Limb Defects

BACKGROUND AND AIMS

To evaluate hospital care of children with congenital upper limb defects.

MATERIALS AND METHODS

Three hundred and sixty-two children with an upper limb defect, born 1993-2005, and alive after birth admission were identified in the Finnish Register of Congenital Malformations. The data on hospital care, with focus on operative treatment, were collected from the National Hospital Discharge Register, until 31 December 2009. Mean follow-up was 10.2 years (range: 4-17 years). The results were compared with data on the whole children population (1.1 million) in Finland.

RESULTS

Most children (321, 87%) with upper limb defects had hospital admissions: on average, one admission/year (range: 0-36), and they were treated in hospital 5 days/year (range: 0-150), which is 11-fold compared with an average child in Finland. Four surgical procedures/child were done (range: 0-45), including one hand surgical procedure. The most common procedures were orthopedic (513); gastrointestinal (263); ear, nose, and throat (143); dental (118); thoracic (48); and urologic (44). Of the 513 orthopedic procedures, 326 were directed to upper limbs, 107 to the lower limbs, and 10 to the spine. Median operation age was 2 years 7 months. Altogether, 60% of hospital admissions were non-surgical. Leading causes of non-operative hospital admissions were congenital anomalies (32%), gastroenterological problems (20%), respiratory tract conditions (13%), neurological problems (7%), perinatal conditions (5%), and infectious diseases (5%).

CONCLUSION

Treatment of children with upper limb defects is teamwork between pediatric and surgical subspecialties. Burden of hospital care is 11-fold as compared with an average child.

Functional Impact of Congenital Hand Differences: Early Results From the Congenital Upper Limb Differences (CoULD) Registry

PURPOSE

To characterize the functional, emotional, and social impact of congenital upper limb differences on affected children and families before treatment, using validated functional outcome instruments.

METHODS

From June 2014 to March 2016, 586 children with congenital upper limb differences from 2 pediatric hospitals were enrolled in the Congenital Upper Limb Differences registry. Demographic, clinical, and radiographic data were collected, and diagnoses categorized according to the Oberg-Manske-Tonkin classification. Functional outcomes were assessed in 301 patients using the Pediatric Outcomes Data Collection Instrument (PODCI) and Patient-Reported Outcomes Measurement Information System (PROMIS) upper extremity (UE) function, pain, anxiety, depression, and peer relationships modules.

RESULTS

The cohort had high median PODCI scores in all domains, ranging from 83 to 100 in children and adolescents. Patients had decreased PROMIS UE scores compared with population norms; however, they showed low scores for pain, anxiety, depression and higher scores in the peer relationship domain, respectively. Patients with entire limb involvement had higher PROMIS pain scores and lower PODCI UE and global functioning than those with differences limited only to the hand. Compared with those with bilateral involvement, patients with unilateral differences reported higher scores for PODCI sports global functioning, better PROMIS UE function, and lower pain scores. Additional orthopedic conditions and medical comorbidities negatively influenced all PODCI scores and PROMIS pain and UE function domains.

CONCLUSIONS

Children with congenital hand differences report decreased upper limb function but better peer relationships and positive emotional states compared with population norms.

CLINICAL RELEVANCE

The Congenital Upper Limb Differences registry is a valid source of information related to congenital upper limb differences in clinical practice. With continuous enrollment and longitudinal follow-up, the registry will increase the understanding of UE function and psychosocial aspects of health in pediatric population.

Non-syndromic bilateral ulnar aplasia with humero-radial synostosis and oligo-ectro-dactyly

Congenital anomalies of the upper limbs are rare and etiologically heterogeneous. Herein, we report a male infant with non-syndromic bilateral Type Vb ulnar longitudinal dysplasia with radiohumeral synostosis (apparent humeral bifurcation), and bilateral oligo-ectro-syndactyly who was born following an uncomplicated pregnancy, with no maternal use of prescription or illicit medication. Array CGH (60,000 probes) and chromosomal breakage analysis (DEB) were normal. Similar appearances have been reported in children exposed to thalidomide or cocaine, but sporadic patients have also been reported without a prior history of exposure to known teratogens.

Chronic pain and fatigue in adults with congenital unilateral upper limb deficiency in Norway. A cross-sectional study

Purpose

To describe Norwegian adults with congenital unilateral upper limb deficiency (CUULD) regarding self-reported chronic pain (intensity, locations, impact on daily life) and fatigue. Analyze associations between chronic pain and demographic/clinical factors and associations between fatigue and demographic/ clinical factors.

Materials and methods

Cross-sectional study. In 2012, a postal questionnaire was sent to 186 persons with congenital limb deficiency, age ≥ 20 years. Seventy seven persons with CUULD responded and are included in this paper. The questionnaire included questions on demographic and clinical factors, chronic pain (Brief Pain Inventory, Standardized Nordic Questionnaire) and fatigue (Fatigue severity scale (FSS)).

Results

Mean age was 42.7 (SD 16.0), 71% were women. Sixty tree % reported chronic pain, many had bilateral pain, most common pain locations were neck (78%) and shoulder/upper arm (78%). However, reported mean pain intensity (3.3 (SD 2.8)) and mean number of pain locations (3.0 (SD 2.5)) were moderate to low. Thirty seven persons reported that pain started in adult age (≥ 19 years). One third reported severe fatigue (FSS ≥ 5). Persons reporting cold sensitivity and severe fatigue were most likely to have chronic pain.

Conclusions

Congenital upper limb deficiency increases the risk of self-reported pain in neck, shoulder/upper arm, cold sensitivity and severe fatigue. Pain, fatigue and cold sensitivity may individually affect function, and may together reinforce functional problems. This should be to taken into account when rehabilitation programs are developed. Further studies of more representative samples should be conducted to confirm our findings.

Intraobserver and Interobserver Reliability of the Oberg-Manske-Tonkin (OMT) Classification: Establishing a Registry on Congenital Upper Limb Differences

BACKGROUND

The purpose of this investigation was to determine the reliability of the Oberg-Manske-Tonkin (OMT) classification system applied to patients enrolled in a prospective, multicenter cohort study of congenital upper limb differences. Our hypothesis was that the OMT classification would exhibit high intraobserver and interobserver reliability and thus would be an appropriate tool for the new Congenital Upper Limb Differences registry.

METHODS

Four pediatric hand surgeons independently reviewed the medical records, clinical photographs, and radiographs of 60 randomly selected patients previously enrolled in the Congenital Upper Limb Differences registry. Patient's information was summarized and shared electronically (PowerPoint). Each rater classified each congenital anomaly according to the OMT classification system. Responses were recorded using a web-based data capture tool (REDCap). Three weeks later, the surgeons repeated the process. Intraobserver reliability for each rater was assessed using Fleiss' κ. Interobserver reliability was assessed using percent exact agreement (when all 4 raters were in agreement) as well as Fleiss' κ.

RESULTS

Using the OMT classification, intraobserver reliability for the 4 pediatric hand surgeons showed almost perfect agreement, with κ values in the range of 0.89 to 0.93. Interobserver reliability demonstrated substantial agreement, with κ value of 0.79 (95% confidence interval, 0.77-0.82) in the first reading and 0.80 (95% confidence interval, 0.77-0.83) in the second reading. The highest possible agreement (κ=1) was seen for the following diagnoses: congenital dislocation of radial head (OMT I.A.2.v), Madelung deformity (I.A.2.vii), radial polydactyly (I.B.2.iii), triphalangeal thumb (I.B.2.iv), Kirner deformity (I.B.4.vi), and osteochondromatosis (3.B.4.i).

CONCLUSIONS

The OMT classification of congenital upper limb differences exhibits substantial to almost perfect intraobserver and interobserver reliability among pediatric hand surgeons at different institutions. The OMT is therefore well-suited for classification of congenital upper limb anomalies in patients enrolled in a multicenter registry.

LEVEL OF EVIDENCE

Level II-diagnostic.

Correction of "Wrist" Deformity in Radial Dysplasia: A Systematic Review and Meta-Analysis

BACKGROUND

Radial dysplasia affects 1 in 6,000 to 8,000 births, classically presenting with a shortened, bowed ulna and radially deviated hand. The optimal treatment remains unclear, with several opposing approaches advocated. This review aims to clarify the long-term outcomes of nonsurgical and surgical treatment of the "wrist" deformity.

METHODS

The Embase, MEDLINE, PubMed, Cochrane Central, ClinicalTrials.gov, and World Health Organization International Clinical Trials Registry Platform (ICTRP) databases were searched for published and unpublished studies reporting long-term outcomes of surgical or nonsurgical treatment of children with radial dysplasia. Results were not restricted by date or language. Primary outcomes were hand-forearm angle, ulnar length, and "wrist" active range of motion (ROM). Studies were assessed using the Grades of Recommendation, Assessment, Development and Evaluation (GRADE) criteria. Data for the change in hand-forearm angle were pooled using random-effects meta-analysis, and mean differences and 95% confidence intervals were obtained. Primary outcome data at last follow-up were pooled, and means and standard deviations were obtained. The PROSPERO registration of this study was CRD42016036665.

RESULTS

Of 104 studies identified, 12 were included in this review. Five were retrospective cohort studies and 7 were case series. No randomized studies were found. Study quality was low or very low according to the GRADE criteria. The hand-forearm angle of nonsurgically treated patients worsened during childhood, from 66° to 84°, whereas "wrist" active ROM, at 61°, was better than that for most surgically treated patients. Ulnar length with nonsurgical treatment was predicted to be 64% of normal, but was not directly reported. Isolated soft-tissue release provided a modest reduction in hand-forearm angle compared with nonsurgical treatment. Soft-tissue distraction with centralization or radialization achieved the best hand-forearm angle correction (16° radial deviation). Radialization maintained better "wrist" active ROM (46°) and ulnar length than centralization. Microvascular second metatarsophalangeal joint transfer yielded better reported "wrist" active ROM (83°) and good ulnar length compared with other surgical techniques, but a slightly worse hand-forearm angle (28°).

CONCLUSIONS

There was low-quality evidence that soft-tissue distraction plus centralization or radialization achieved the best correction of the hand-forearm angle for children with radial dysplasia.

LEVEL OF EVIDENCE

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

Radial Longitudinal Deficiency: Recent Developments, Controversies, and an Evidence-Based Guide to Treatment

Radial longitudinal deficiency (RLD) is the most common congenital longitudinal deficiency at birth and represents a wide spectrum of upper extremity anomalies, from mild thumb hypoplasia to absent radius. Radial dysplasia may be isolated or associated with an array of systemic anomalies that should be familiar to pediatric hand surgeons. The management of RLD has evolved greatly since its inception in the late 19th century, largely due to decades of innovation that followed the thalidomide catastrophe of the 1960s. Yet controversy still exists regarding many aspects of RLD. Traditional treatments of radial dysplasia (ie, centralization) are unfortunately wrought with poor outcomes and high rates of recurrence, leading some authors to recommend alternative techniques for this condition. Reconstruction of the hypoplastic thumb, although less controversial, is just starting to see long-term outcomes. This article reviews the etiology, classification, and treatment options for RLD, highlighting recent developments and outcomes.