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This study aimed to identify clinical characteristics of impaired trunk control in hundred children with spastic CP (mean age 11.4 ± 2.1 years, range 8-15 years). Assessment of trunk control was performed with the Trunk Control Measurement Scale (TCMS). Trunk control was clearly impaired, indicated by a median total TCMS score of 38.5 out of 58 (66%). Median subscale scores were 18 out of 20 (90%) for the subscale static sitting balance, 16 out of 28 (57%) for the subscale selective movement control and 6 out of 10 (60%) for the subscale dynamic reaching. Total TCMS and subscale scores differed significantly between topographies and severity of motor impairment according to the Gross Motor Function Classification System (GMFCS). Children with hemiplegia obtained the highest scores, followed by children with diplegia and children with quadriplegia obtained the lowest scores. TCMS scores significantly decreased with increasing GMFCS level. In conclusion, trunk control is impaired in children with CP to a various extent, depending on the topography and severity of the motor impairment. The findings of this study also provide specific clues for treatment interventions targeting trunk control to improve their functional abilities., (Copyright © 2012 Elsevier Ltd. All rights reserved.)

Aim: The aim of this study was to examine the reliability and validity of the Dyskinesia Impairment Scale (DIS). The DIS consists of two subscales: dystonia and choreoathetosis. It measures both phenomena in dyskinetic cerebral palsy (CP)., Method: Twenty-five participants with dyskinetic CP (17 males; eight females; age range 5–22y; mean age 13y 6mo; SD 5y 4mo), recruited from special schools for children with motor disorders, were included. Exclusion criteria were changes in muscle relaxant medication within the previous 3 months, orthopaedic or neurosurgical interventions within the previous year, and spinal fusion. Interrater reliability was verified by two independent raters. For interrater reliability, intraclass correlation coefficients were assessed. Standard error of measurement, the minimal detectable difference, and Cronbach’s alpha for internal consistency were determined. For concurrent validity of the DIS dystonia subscale, the Barry–Albright Dystonia Scale was administered., Results: The intraclass correlation coefficient for the total DIS score and the two subscales ranged between 0.91 and 0.98 for interrater reliability. The reliability of the choreoathetosis subscale was found to be higher than that of the dystonia subscale. The standard error of the measurement and minimal detectable difference values were adequate. Cronbach’s alpha values ranged from 0.89 to 0.93. Pearson’s correlation between the dystonia subscale and Barry–Albright Dystonia Scale was 0.84 (p<0.001)., Interpretation: Good to excellent reliability and validity were found for the DIS. The DIS may be promising for increasing insights into the natural history of dyskinetic CP and evaluating interventions. Future research on the responsiveness of the DIS is warranted.

In this study the psychometric properties of the Trunk Control Measurement Scale (TCMS) in children with cerebral palsy (CP) were examined. Twenty-six children with spastic CP (mean age 11 years 3 months, range 8-15 years; Gross Motor Function Classification System level I n = 11, level II n = 5, level III n = 10) were included in this study. To determine the discriminant ability of the TCMS, 30 typically developing (TD) children (mean age 10 years 6 months, range 8-15 years) were also included. For inter-rater reliability, two testers scored all children simultaneously. To determine test-retest reliability, participants were reassessed on a second test occasion. For construct validity, the Gross Motor Function Measure (GMFM) was administered. Intraclass correlation coefficients (ICC) ranged from 0.91 to 0.99 for inter-rater and test-retest reliability. Kappa and weighted kappa values ranged for all but one item from 0.45 to 1. The standard error of measurement was 2.9% and 3.4%, and the smallest detectable difference for repeated measurements was 8% and 9.43% between raters and test-retest, respectively. Cronbach's alpha coefficients ranged from 0.82 to 0.94. Spearman rank correlation with the GMFM was 0.88 and increasing coefficients were found from dimension B to E. Subscale and total TCMS scores showed significant differences between children with CP and TD children (p < 0.0001). The results support the reliability and validity of the TCMS in children with spastic CP. The scale gives insight into the strengths and weaknesses of the child's trunk performance and therefore can have valuable clinical use., (Copyright © 2011 Elsevier Ltd. All rights reserved.)