RESUMEN
Spasticity is one of the symptoms that contributes to functional limitation in adults with cerebral palsy and characterized by a velocity dependent increase in tonic reflex due to the hyperexcitability of the stretch reflex. Modified Tardieu Scale [MTS] is a valid clinical tool for assessment of spasticity. The purpose of this study was to investigate Inter-rater reliability of the Modified Tardieu Scale [MTS] for hip adductors, knee extensors and ankle plantar flexors muscles in adult subjects with cerebral palsy. In an analytical cross sectional study, 30 participants 11 men' 21 women, age range 20 to 40 years, mean age [26.57 +/- 4.8] with spastic cerebral palsy from Ra'ad Rehabilitation Goodwill Complexes in Tehran city in a convenient sampling took part in this study. Spasticity was measured by two physiotherapist for hip adductors, knee extensors and ankle plantar flexors with MTS during same session with ten minutes interval between assessment of two raters. ICC values for R2-Ri as an indicator of spasticity in hip adductors, knee extensor and plantar flexors were 0.97, 0.88 and 0.81 respectively. Also ICC Values for quality of muscle reaction was 0.89 in hip adductors, 0.96 in knee extensors and 0.92 in ankle plantar flexors. MTS has a high reliability in spasticity assessment of adductors, knee extensors and ankle plantar flexors muscles, Probably MTS can be used as a reliable clinical tool to measure spasticity of lower extremity muscles in adult subjects with cerebral palsy