en بررسی تاثیر زاویه مچ پا و طول قطعۀ کف پایی ارتز مچ پایی-پایی بر راه رفتن بیماران همی پلژی دچار سکته مغزی ارتز پروتز Prosthetics and Orthotics <div dir="ltr" style="text-align: justify;"><span style="font-family:times new roman;"><strong>Background and Objectives:&nbsp; </strong>Equinovarus deformity and knee hyperextension are the most common problems in stroke patients. Ankle foot orthosis (AFO) is commonly prescribed to improve these disorders in these patients, as well as gait parameters that are approved. The aim of this study is to investigate the effect of ankle alignment and rigid AFO footplate length on spatiotemporal parameters and knee joint angle in hemiplegic post-stroke patients.<br> <strong>Materials and Methods: </strong>This quasi-experimental study was performed on 6 hemiplegic post-stroke patients using three rigid AFO modes, including neutral ankle angle with full-length foot-plate -conventionally aligned AFO (CAFO), neutral ankle angle with &frac34; length foot plate (&frac34;AFO), and 50dorsi-flexion ankle angle with full-length foot-plate (5⁰DF AFO) to investigate the effect of the alignment and foot plate length on spatiotemporal parameters and knee joint angle. The 3D motion analysis system with a Vicon Camera was used to collect the spatiotemporal parameters data.<br> <strong>Results: </strong>The mean walking speed of patients after using 5⁰DF AFO was significantly higher compared to CAFO (P=0.036). The mean stride length, cadence and maximum knee extension angle in the stance phase during single limb support was not significantly different in the three different test modes of &frac34;AFO, CAFO, 5⁰DF AFO (P > 0.05).<br> <strong>Conclusion: </strong>The DF AFO with 50ankle angle increases the walking speed and also controls knee hypertension in the terminal stance phase, which can be due to the progression of tibia in the mid to late stance phase and the alteration of ground reaction force vector.</span><br> &nbsp;</div> Stroke, Hemiplegia, AFO, Alignment, Walking speeds, Knee kinematics, Footplate length. 37 45 http://fdj.iums.ac.ir/browse.php?a_code=A-10-87-1&slc_lang=en&sid=1 Razieh Didevara راضیه دیده ورا razieh.didevara@yahoo.com 10031947532846001362 10031947532846001362 No MSc. Of Prosthetics and Orthotics, Department of Orthotics and Prosthetics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran دانشجو کارشناسی ارشد، گروه آموزشی ارتز و پروتز، دانشگاه علوم بهزیستی و توانبخشی، تهران، ایران gholamreza Aminian غلامرضا امینیان gholamrezaaminia@yahoo.com 10031947532846001363 10031947532846001363 Yes Associate Professor, Department of Orthotics and Prosthetics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran دانشیار، گروه آموزشی ارتز و پروتز، دانشگاه علوم بهزیستی و توانبخشی، تهران، ایران Aliyeh Daryabor عالیه دریابر R_daryabor@yahoo.com 10031947532846001364 10031947532846001364 No PhD Student Of Prosthetics and Orthotics, Department of Orthotics and Prosthetics University of Social Welfare and Rehabilitation Sciences, Tehran, Iran دانشجو دکتری ارتز و پروتز، گروه آموزشی ارتز و پروتز، دانشگاه علوم بهزیستی و توانبخشی، تهران، ایران