Susan M Reid

Hip displacement in cerebral palsy

BACKGROUND Hip displacement is considered to be common in children with cerebral palsy but the reported incidence and the proposed risk factors vary widely. Knowledge regarding its overall incidence and associated risk factors can facilitate treatment of these children. METHODS An inception cohort was generated from the Victorian Cerebral Palsy Register for the birth years 1990 through 1992, inclusive, and multiple data sources pertaining to the cohort were reviewed during 2004. Gross motor function was assessed for each child and was graded according to the Gross Motor Function Classification System (GMFCS), which is a valid, reliable, five-level ordinal grading system. Hip displacement, defined as a migration percentage of >30%, was measured on an anteroposterior radiograph of the pelvis with use of a reliable technique. RESULTS A full data set was obtained for 323 (86%) of 374 children in the Register for the birth years 1990 through 1992. The mean duration of follow-up was eleven years and eight months. The incidence of hip displacement for the entire birth cohort was 35%, and it showed a linear relationship with the level of gross motor function. The incidence of hip displacement was 0% for children with GMFCS level I and 90% for those with GMFCS level V. Compared with children with GMFCS level II, those with levels III, IV, and V had significantly higher relative risks of hip displacement (2.7, 4.6, and 5.9, respectively). CONCLUSIONS Hip displacement is common in children with cerebral palsy, with an overall incidence of 35% found in this study. The risk of hip displacement is directly related to gross motor function as graded with the Gross Motor Function Classification System. This information may be important when assessing the risk of hip displacement for an individual child who has cerebral palsy, for counseling parents, and in the design of screening programs and resource allocation.

Cerebral palsy in Victoria : Motor types, topography and gross motor function

Objectives:  To study the relationships between motor type, topographical distribution and gross motor function in a large, population‐based cohort of children with cerebral palsy (CP), from the State of Victoria, and compare this cohort to similar cohorts from other countries.

Magnetic resonance imaging findings in a population-based cohort of children with cerebral palsy.

The purpose of this study was to investigate the frequency and spectrum of magnetic resonance imaging (MRI) abnormalities in a population of children with cerebral palsy (CP) who were born in the years 2000 and 2001 in Victoria, Australia. In 2000 and 2001, 221 children (126 males, 95 females; mean age 6y [SD 7mo], range 5–7y) with CP, excluding those with CP due to postneonatal causes (6% of all cases), were identified through the Victorian Cerebral Palsy Register. All medical records were systematically reviewed and all available brain imaging was comprehensively evaluated by a single senior MRI radiologist. MRI was available for 154 (70%) individuals and abnormalities were identified in 129 (84%). The study group comprised 88% with a spastic motor type CP; the distribution was hemiplegia in 33.5%, diplegia in 28.5%, and quadriplegia in 37.6% of children. Overall, pathological findings were most likely to be identified in children with spastic hemiplegia (92%) and spastic quadriplegia (84%). Abnormalities were less likely to be identified in non‐spastic motor types (72%) and spastic diplegia (52%). The most common abnormalities identified on MRI were periventricular white matter injury (31%), focal ischaemic/haemorrhagic lesions (16%), diffuse encephalopathy (14%), and brain malformations (12%). Dual findings were seen in 3% of patients. This is the first study to document comprehensively the neuroimaging findings of all children identified with CP born over a consecutive 24‐month period in a large geographical area.

The Relationship between Quality of Life and Functioning for Children with Cerebral Palsy.

Given that quality of life (QOL) is commonly confused with functioning, the aim of this study was to examine the association between functioning and QOL domains for children with cerebral palsy (CP). Two hundred and five parents of children aged 4 to 12 years with CP and 53 children aged 9 to 12 years with CP, completed the Cerebral Palsy Quality of Life Questionnaire for Children. Children were distributed reasonably evenly between sex (male, 54.6%) and Gross Motor Function Classification System levels (I 17.8%, II 28.3%, III 14.1%, IV 11.2%, and V 27.3%). For parent proxy‐report, all domains of QOL were significantly associated with functioning level except access to services. For child self‐report, feelings about functioning, participation and physical health, and pain and feelings about disability, were significantly associated with functioning level. Physical type domains of QOL accounted for more of the variance in functioning than psychosocial type domains. Children with CP have the potential to report a high psychosocial QOL score even if they have poor functioning.

Randomized trial of botulinum toxin injections into the salivary glands to reduce drooling in children with neurological disorders

The primary aim of this randomized, controlled trial was to assess the effectiveness of botulinum toxin A (BoNT‐A) injections into the submandibular and parotid glands on drooling in children with cerebral palsy (CP) and other neurological disorders. Secondary aims were to ascertain the duration of any such effect and the timing of maximal response. Of the 48 participants (27 males, 21 females; mean age 11y 4mo [SD 3y 3mo], range 6‐18y), 31 had a diagnosis of CP and 15 had a primary intellectual disability; 27 children were non‐ambulant. Twenty‐four children randomized to the treatment group received 25 units of BoNT‐A into each parotid and submandibular gland. Those randomized to the control group received no treatment. The degree and impact of drooling was assessed by carers using the Drooling Impact Scale questionnaire at baseline and at monthly intervals up to 6 months postinjection/baseline, and again at 1 year. Maximal response was at 1 month at which time there was a highly significant difference in the mean scores between the groups. This difference remained statistically significant at 6 months. Four children failed to respond to the injections, four had mediocre results, and 16 had good results. While the use of BoNT‐A can help to manage drooling in many children with neurological disorders, further research is needed to fully understand the range of responses.The primary aim of this randomized, controlled trial was to assess the effectiveness of botulinum toxin A (BoNT-A) injections into the submandibular and parotid glands on drooling in children with cerebral palsy (CP) and other neurological disorders. Secondary aims were to ascertain the duration of any such effect and the timing of maximal response. Of the 48 participants (27 males, 21 females; mean age 11y 4mo [SD 3y 3mo], range 6-18y), 31 had a diagnosis of CP and 15 had a primary intellectual disability; 27 children were non-ambulant. Twenty-four children randomized to the treatment group received 25 units of BoNT-A into each parotid and submandibular gland. Those randomized to the control group received no treatment. The degree and impact of drooling was assessed by carers using the Drooling Impact Scale questionnaire at baseline and at monthly intervals up to 6 months postinjection/baseline, and again at 1 year. Maximal response was at 1 month at which time there was a highly significant difference in the mean scores between the groups. This difference remained statistically significant at 6 months. Four children failed to respond to the injections, four had mediocre results, and 16 had good results. While the use of BoNT-A can help to manage drooling in many children with neurological disorders, further research is needed to fully understand the range of responses.

Survival of individuals with cerebral palsy born in Victoria, Australia, between 1970 and 2004

Aim  This study used data collected prospectively since 1986 from a population‐based cerebral palsy registry to explore the rates, predictors, trends, and causes of mortality for individuals born in Victoria, Australia, between 1970 and 2004.

Repeat botulinum toxin-A injections in the upper limb of children with hemiplegia: a randomized controlled trial

Aim To test the effectiveness of repeat botulinum toxin A (BoNT‐A) injections in the affected arm of 22 children with hemiplegic cerebral palsy (19 males, three females), aged 1 year 10 months to 4 years 10 months (mean 3y 8mo, SD 9mo) in a randomized controlled trial.

Rates of cerebral palsy in Victoria, Australia, 1970 to 2004: has there been a change?

Aim  The aim of this study was to assess overall and gestational age‐specific trends in the rate of cerebral palsy (CP) in Victoria, Australia, and to compare these findings with other population data.

Population-based studies of brain imaging patterns in cerebral palsy.

The aim of this study was to review the distribution of neuroimaging findings from a contemporary population cohort of individuals with cerebral palsy (CP) and to facilitate standardization of imaging classification.

Epilepsy in hemiplegic cerebral palsy due to perinatal arterial ischaemic stroke

Aim  The aim of this study was to describe the frequency, risk factors, manifestations, and outcome of epilepsy in children with hemiplegic cerebral palsy (CP) due to perinatal arterial ischaemic stroke (AIS).