Multisite Trial on Efficacy of Constraint-Induced Movement Therapy in Children with Hemiplegia: Study Design and Methodology

Are they really motor learning therapies? A scoping review of evidence-based, task-focused models of upper limb therapy for children with unilateral cerebral palsy

PURPOSE

To identify the specific motor learning (ML) theories underpinning evidence-based, task-focused upper limb models of therapy for children with unilateral cerebral palsy; and to document the strategies used in the operationalisation of these theories.

MATERIAL AND METHOD

This scoping review searched for relevant studies using eight electronic databases. A list of 68 ML strategies and accompanying definitions was developed for data extraction. Three classifications; adequate, inadequate or not described were used to rate the description of ML strategies. A corresponding colour-coding system was used to provide a visual summary.

RESULTS

There is a limited description of the ML theories and strategies used to operationalise these theories in existing models of evidence-based upper limb therapy. Of 103 therapy protocols included, only 24 explicitly described the guiding ML theory. When described, there was significant variation in the underlying theories, leading to significantly different focus and content of therapy. Of the 68 ML strategies, only three were adequately described.

CONCLUSIONS

To support treatment fidelity and the implementation of evidence-based, task-focused models of upper limb therapy in clinical practice, future research needs to provide explicit details about the underlying theories and strategies used in the operationalisation of these theories.Implications for rehabilitationEvidence-based models of upper limb therapy purport to be based on motor learning theory, however, most provide a very limited description of the theories and strategies used.Dosage of practice is only one element that is specific to a therapy approach and other elements guided by the principles of type of task and type of feedback should be considered.To support the implementation of evidence-based approaches in clinical practice, and improve treatment fidelity, it is important for researchers to define the theories that guide therapy approaches and explicitly describe the strategies used to operationalise these theories.

Constraint-induced movement therapy in children with unilateral cerebral palsy

BACKGROUND

Unilateral cerebral palsy (CP) is a condition that affects muscle control and function on one side of the body. Children with unilateral CP experience difficulties using their hands together secondary to disturbances that occur in the developing fetal or infant brain. Often, the more affected limb is disregarded. Constraint-induced movement therapy (CIMT) aims to increase use of the more affected upper limb and improve bimanual performance. CIMT is based on two principles: restraining the use of the less affected limb (for example, using a splint, mitt or sling) and intensive therapeutic practice of the more affected limb.

OBJECTIVES

To evaluate the effect of constraint-induced movement therapy (CIMT) in the treatment of the more affected upper limb in children with unilateral CP.

SEARCH METHODS

In March 2018 we searched CENTRAL, MEDLINE, Embase, CINAHL, PEDro, OTseeker, five other databases and three trials registers. We also ran citation searches, checked reference lists, contacted experts, handsearched key journals and searched using Google Scholar.

SELECTION CRITERIA

Randomised controlled trials (RCTs), cluster-RCTs or clinically controlled trials implemented with children with unilateral CP, aged between 0 and 19 years, where CIMT was compared with a different form of CIMT, or a low dose, high-dose or dose-matched alternative form of upper-limb intervention such as bimanual intervention. Primarily, outcomes were bimanual performance, unimanual capacity and manual ability. Secondary outcomes included measures of self-care, body function, participation and quality of life.

DATA COLLECTION AND ANALYSIS

Two review authors independently screened titles and abstracts to eliminate ineligible studies. Five review authors were paired to extract data and assess risk of bias in each included study. GRADE assessments were undertaken by two review authors.

MAIN RESULTS

We included 36 trials (1264 participants), published between 2004 and 2018. Sample sizes ranged from 11 to 105 (mean 35). Mean age was 5.96 years (standard deviation (SD) 1.82), range three months to 19.8 years; 53% male and 47% participants had left hemiplegia. Fifty-seven outcome measures were used across studies. Average length of CIMT programs was four weeks (range one to 10 weeks). Frequency of sessions ranged from twice weekly to seven days per week. Duration of intervention sessions ranged from 0.5 to eight hours per day. The mean total number of hours of CIMT provided was 137 hours (range 20 to 504 hours). The most common constraint devices were a mitt/glove or a sling (11 studies each).We judged the risk of bias as moderate to high across the studies.

KEY RESULTS

Primary outcomes at primary endpoint (immediately after intervention)CIMT versus low-dose comparison (e.g. occupational therapy)We found low-quality evidence that CIMT was more effective than a low-dose comparison for improving bimanual performance (mean difference (MD) 5.44 Assisting Hand Assessment (AHA) units, 95% confidence interval (CI) 2.37 to 8.51).CIMT was more effective than a low-dose comparison for improving unimanual capacity (Quality of upper extremity skills test (QUEST) - Dissociated movement MD 5.95, 95% CI 2.02 to 9.87; Grasps; MD 7.57, 95% CI 2.10 to 13.05; Weight bearing MD 5.92, 95% CI 2.21 to 9.6; Protective extension MD 12.54, 95% CI 8.60 to 16.47). Three studies reported adverse events, including frustration, constraint refusal and reversible skin irritations from casting.CIMT versus high-dose comparison (e.g. individualised occupational therapy, bimanual therapy)When compared with a high-dose comparison, CIMT was not more effective for improving bimanual performance (MD -0.39 AHA Units, 95% CI -3.14 to 2.36). There was no evidence that CIMT was more effective than a high-dose comparison for improving unimanual capacity in a single study using QUEST (Dissociated movement MD 0.49, 95% CI -10.71 to 11.69; Grasp MD -0.20, 95% CI -11.84 to 11.44). Two studies reported that some children experienced frustration participating in CIMT.CIMT versus dose-matched comparison (e.g. Hand Arm Bimanual Intensive Therapy, bimanual therapy, occupational therapy)There was no evidence of differences in bimanual performance between groups receiving CIMT or a dose-matched comparison (MD 0.80 AHA units, 95% CI -0.78 to 2.38).There was no evidence that CIMT was more effective than a dose-matched comparison for improving unimanual capacity (Box and Blocks Test MD 1.11, 95% CI -0.06 to 2.28; Melbourne Assessment MD 1.48, 95% CI -0.49 to 3.44; QUEST Dissociated movement MD 6.51, 95% CI -0.74 to 13.76; Grasp, MD 6.63, 95% CI -2.38 to 15.65; Weightbearing MD -2.31, 95% CI -8.02 to 3.40) except for the Protective extension domain (MD 6.86, 95% CI 0.14 to 13.58).There was no evidence of differences in manual ability between groups receiving CIMT or a dose-matched comparison (ABILHAND-Kids MD 0.74, 95% CI 0.31 to 1.18). From 15 studies, two children did not tolerate CIMT and three experienced difficulty.

AUTHORS' CONCLUSIONS

The quality of evidence for all conclusions was low to very low. For children with unilateral CP, there was some evidence that CIMT resulted in improved bimanual performance and unimanual capacity when compared to a low-dose comparison, but not when compared to a high-dose or dose-matched comparison. Based on the evidence available, CIMT appears to be safe for children with CP.

Efficacy of constraint-induced movement therapy compared with bimanual intensive training in children with unilateral cerebral palsy: a systematic review

OBJECTIVE

To systematically review the evidence on the effect of constraint-induced movement therapy compared with bimanual intensive training in children with unilateral cerebral palsy.

DATA SOURCES

Seven electronic databases (Cinahl, Cochrane Library, EMBASE, Ovid MEDLINE, PEDro, PsycINFO, PubMed) were searched from database inception through December 2016.

METHODS

A systematic review was performed using the American Academy of Cerebral Palsy and Developmental Medicine and Preferred Reporting Items for Systematic Review and Meta-Analysis guidelines. Standardised mean differences (effect sizes) were calculated for each study and outcome.

RESULTS

Nine studies met the eligibility criteria. All studies provided level II evidence. Methodological quality was high in two studies, moderate in four studies and low in three studies. The methodology, participant and intervention characteristics were heterogeneous. The participants' ages ranged from 1.5 to 16 years. Their initial hand function ranged from Manual Ability Classification System Level I to Level III. The total intervention dose ranged from 24 to 210 hours and duration from one week to ten weeks. The studies measured outcomes assessing unimanual and bimanual hand and arm function, participation and attainment of individualised goals. Overall, the effect sizes did not favour one of the interventions at short- or long-term follow-up. The 95% confidence intervals were broad, indicating inaccurate precision of the effect sizes. Pooling of the data for a meta-analysis was judged to be of little clinical value owing to heterogeneity.

CONCLUSION

It is not possible to conclude whether constraint-induced movement therapy or bimanual intensive training is more effective than the other in children with unilateral cerebral palsy.

Do we really know what they were testing? Incomplete reporting of interventions in randomised trials of upper limb therapies in unilateral cerebral palsy

BACKGROUND

Incomplete reporting of components of interventions limits uptake of evidence into clinical practice.

AIMS

To evaluate the completeness of reporting of research and control interventions in randomised trials of upper limb therapies for children with unilateral cerebral palsy.

METHODS AND PROCEDURES

Sixty randomized trials were included, encompassing 60 research and 68 control interventions. Using the 12-item Template for Intervention Description and Replication (TIDieR) checklist, two reviewers independently rated intervention and control descriptions.

OUTCOMES AND RESULTS

When using 50% of studies as the benchmark, five of the 12 TIDieR items for the research intervention, eight of the 12 items for the control intervention and 11 of 12 items for "usual care" interventions were inadequately reported. Procedures used to deliver the research intervention were adequately reported for 63% of studies. Materials were used in 94% of research interventions, yet only 27% provided details to access/replicate materials. Training materials for interventionists were used in 38% of trials, 10 (17%) had procedure manuals, yet only 3 reported details to access materials. The location where the research intervention was provided was detailed in 65% of studies. Reporting of all items was poorer for the control intervention.

CONCLUSIONS

No study adequately reported all elements on the TIDieR checklist. Details crucial for replication of interventions and interpretation of results were missing. Authors, reviewers, and editors all have a responsibility to improve the quality of intervention reporting in published trials. The TIDieR guide is a potential solution, helping to structure accounts of interventions.

The state of the evidence for intensive upper limb therapy approaches for children with unilateral cerebral palsy

Children with unilateral cerebral palsy experience difficulties with unimanual and bimanual upper limb function, impacting independence in daily life. Targeted upper limb therapies such as constraint-induced movement therapy, bimanual training, and combined approaches have emerged in the last decade. This article reviews the scientific rationale underpinning these treatments and current evidence to improve upper limb outcomes and goal attainment. Intensive models of therapy achieved modest to strong effects to improve upper limb function compared to usual care. Dose-matched comparisons of bimanual and unimanual training demonstrated similar gains in upper limb outcomes. The optimum timing, dose and impact of repeat episodes of intensive upper limb therapies require further investigation. Characteristics of children who achieve clinically meaningful outcomes remain unclear. Key components of intervention include collaborative goal setting with families and intensive repetitive, incrementally challenging, task practice. Choice of treatment approach should be governed by child/family goals and preferences, individual, and contextual factors.

MRI predicts efficacy of constraint-induced movement therapy in children with brain injury

Using resting state (RS) functional magnetic resonance imaging (fMRI) and diffusion tensor imaging (DTI), we identified the predictors of clinical improvement following constraint-induced movement therapy (CIMT) in pediatric patients with chronic hemiplegia.From 14 children with congenital or acquired brain injury and 10 sex- and age-matched healthy controls, brain dual-echo, DTI and RS fMRI sequences were acquired before CIMT. The Quality of Upper Extremities Skills Test and the Gross Motor Function Measure (GMFM) were administered at baseline, at the end of CIMT (10 weeks), and after 6 months. Mean diffusivity and fractional anisotropy (FA) were measured in the lesion responsible for the clinical symptomatology, the affected and unaffected corticospinal tract (CST), motor transcallosal fibers, and uncinate fasciculus (as an internal control). Independent component analysis was used to identify the sensorimotor RS network. The ability of baseline MRI variables to predict clinical changes over time was assessed using multivariate linear models. At baseline, patients had increased mean diffusivity in the symptomatic lesion and decreased FA in the symptomatic lesion, affected corticospinal tract, and motor transcallosal fibers. A reduced RS functional connectivity was found in the bilateral cerebellum, left precentral gyrus, and right secondary sensorimotor cortex. At follow up, Quality of Upper Extremities Skills Test and GMFM scales improved significantly. Baseline average lesion FA predicted clinical improvement at week 10, and baseline functional connectivity of the right secondary sensorimotor cortex and cerebellum predicted GMFM improvement at month 6. DTI and RS fMRI offer promising and objective markers to predict clinical outcomes following CIMT in pediatric patients with congenital or acquired hemiplegia.

Unimanual and bimanual intensive training in children with hemiplegic cerebral palsy and persistence in time of hand function improvement: 6-month follow-up results of a multisite clinical trial

This study aims to compare in hemiplegic children the effectiveness of intensive training (unimanual and bimanual) versus standard treatment in improving hand function, assessing the persistence after 6 months. A multicenter, prospective, cluster-randomized controlled clinical trial was designed comparing 2 groups of children with hemiplegic cerebral palsy, treated for 10 weeks (3 h/d 7 d/wk; first with unimanual constraint-induced movement therapy, second with intensive bimanual training) with a standard treatment group. Children were assessed before and after treatment and at 3 and 6 months postintervention using Quality of Upper Extremity Skills Test (QUEST) and Besta Scales. One hundred five children were recruited (39 constraint-induced movement therapy, 33 intensive bimanual training, 33 standard treatment). Constraint-induced movement therapy and intensive bimanual training groups had significantly improved hand function, showing constant increase in time. Grasp improved immediately and significantly with constraint-induced movement therapy, and with bimanual training grasp improved gradually, reaching the same result. In both, spontaneous hand use increased in long-term assessment.

Terapia por Contensão Induzida (TCI) em adolescentes com hemiparesia espástica: relato de caso

INTRODUÇÃO: A Terapia por Contensão Induzida (TCI) é um protocolo terapêutico que visa diminuir a assimetria de uso dos membros superiores. OBJETIVO: Verificar o efeito da TCI em dois adolescentes, com paralisia cerebral hemiparética (PCH). MATERIAIS E MÉTODOS: Dois adolescentes com PCH, de 12 e 14 anos de idade, receberam aplicação de TCI por três horas diárias durante três semanas. Este estudo apresentou desenho ABA experimental, com um mês de seguimento. Os adolescentes foram avaliados com a Teenager Motor Activity Log (TMAL) e o Wolf Motor Function Test (WMFT); o avaliador esteve independente da intervenção e cegado quanto à ordem das avaliações. RESULTADOS: Houve melhora na quantidade, qualidade e espontaneidade de uso após a aplicação da TCI segundo a escala da TMAL. Os dois pacientes apresentaram diminuição no tempo de execução das tarefas do WMFT e foi observada também melhora na habilidade funcional. CONCLUSÃO: Este estudo mostra efeitos positivos da TCI em adolescentes com PCH. Ressalta-se, no entanto, que se fazem necessários ensaios clínicos para confirmar a eficácia da intervenção nessa população.

Childhood hemorrhagic stroke: an important but understudied problem

Hemorrhagic stroke in children occurs more frequently than is commonly appreciated. There are important differences in the factors associated with hemorrhagic stroke in children when compared with adults. These differences likely play a role in the different outcomes, which tend to worsen with age. In this review, we describe the estimated frequency, clinical presentation, acute management of hemorrhagic stroke, and an overview of rehabilitation techniques. We identify key topics for future basic and clinical research. Findings from future studies will help improve our ability to optimize treatment for and long-term rehabilitation of these patients.