---

 Background and Aim: Spasticity is a motor disorder characterized by a velocity dependent increase in tonic stretch reflex and tendon jerks, due to the hyper-excitability of the stretch reflex. Modified Tardieu Scale (MTS) is a clinical tool for assessment of spasticity. The purpose of this study was to investigate intra-rater reliability of the MTS for knee extensors and ankle plantar flexors muscles in adult subjects with chronic stroke.

 Materials and Methods: In an analytical cross sectional study, 17 participants (10 men ,7 women) with age range of 40-76 years and mean time post stroke of 20/79 (SD=20/55) in a convenient sampling took part in this test-retest study. Intra-rater reliability of spasticity with MTS was investigated by one un-experienced physiotherapist for knee extensors and ankle plantar flexors in two sessions over one week. 

 Results: Interclass correlation coefficient (ICC) values for R₂-R₁ as an indicator of spasticity in knee extensor and plantar flexors was good (ICC=0/66) and very good (ICC=0/87) and for knee extensors and ankle plantar flexors quality of muscle reaction was 0.80 and 0.92 respectively.

 Conclusion: The MTS has a good reliability in spasticity assessment of knee extensors and ankle plantar muscles after stroke. Probably MTS can be used as a reliable clinical tool to measure spasticity of lower extremity muscles in adult subjects with chronic stroke.

---

Background and Aim: 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.

 Materials and Methods: In an analytical cross sectional study, 30participants (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.

 Results: ICC values for R₂-R₁ 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

Conclusion: 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.