پژوهش در طب ورزشی و فناوری

توان مکانیکی مفاصل اندام تحتانی راست و چپ در افراد مبتلا به اسکولیوز نوجوانی ناشناخته و افراد سالم هنگام راه رفتن

نویسندگان

شیرین یزدانی 1
نادر فرهپور 2

1 دانشگاه تبریز

2 دانشگاه بوعلی سینا

https://doi.org/10.29252/jsmt.19.1.105
چکیده
مقدمه و هدف: اگرچه مستند است که در ناهنجاری اسکلیوز راستای ستون فقرات و لگن تغییر می­یابد، لیکن اطلاعات دقیقی درباره تأثیر این تغییرات در بیومکانیک اندام تحتانی هنگام راه رفتن وجود ندارد. ازاین‌رو هدف این مطالعه مقایسه توان مفاصل اندام تحتانی بیماران اسکولیوز نوجوانی ناشناخته و افراد سالم هنگام راه رفتن بود. روش‌شناسی: با استفاده از دستگاه تحلیل حرکتی با 4 دوربین Vicon و دو صفحه نیروی کیستلر، متغیرهای کینماتیکی و کینتیکی راه رفتن 20 دختر نوجوان مبتلا به اسکولیوز و 20 دختر سالم ثبت و سپس با استفاده از نرم­افزارهای Vicon Nexus و Polygon توان مفاصل ران، زانو و مچ پای راست و چپ در صفحه ساجیتال محاسبه شد. داده­ها با استفاده از روش آماری ANOVA در سطح معنی­داری 05/0>α پردازش شدند. یافته­ها: جذب توان زانوی راست بیماران اسکولیوز به‌طور معنا­داری 5/12% کمتر از افراد سالم بود (01/0=p). به‌غیراز جذب توان در زانوی راست، بین میزان جذب و تولید توان در سایر مفاصل پای راست و چپ بیماران اسکولیوز و افراد سالم تفاوتی مشاهده نشد (0/05<p). بحث و نتیجه‌­گیری: ناهنجاری اسکولیوز، با کاهش جذب توان زانو همراه است. با توجه به اینکه کاهش یک‌طرفه و نامتقارن جذب توان در زانو ممکن است با تغییرات نامتقارن گشتاور، نیروی عکس­العمل و عملکرد عضلات مرتبط باشد، می­تواند احتمالاً عامل اعمال نیروی نامتقارن به لگن و متعاقباً پیشرفت انحناء اسکولیوز شود.

کلیدواژه‌ها

اسکولیوز
راه رفتن
تولید توان
جذب توان
تقارن

عنوان مقاله English

The mechanical power of right and left lower extremity joints during walking in patients with adolescent idiopathic scoliosis and healthy controls

نویسندگان English

shirin yazdani 1
nader farahpour 2
1 university of Tabriz
2 Bu Ali Sina university
چکیده English

Background and Objective: although it is documented that the spine and hip alignments alter in scoliosis subjects, but the effect of these changes on the lower extremities’ biomechanics have not been well understood yet. So, the aim of this study was to compare hip, knee and ankle joint’s power generation and absorption during gait in patients with adolescent idiopathic scoliosis (AIS) and healthy controls. Methods: Using motion analysis system with 4 Vicon-460 cameras and two Kistler force plates, the kinematics and kinetics of gait was assessed in twenty girls with AIS and 20 matched healthy controls, then the power of the right and left hip, knee and ankle joints in sagittal plane was calculated. Data was analyzed using ANOVA statistical method with significance level of α<0.05. Results: Results showed that in scoliosis group, the peak power absorption of the right knee was significantly 12.5% smaller than that in control group (p=0.01). But, peak power generation and absorption of the hip and ankle joints in both right and left limbs were not statistically differed between the two groups (p>0.05). Conclusion: scoliosis is associated with the smaller power absorption of the knee joint at convex side. This might be linked with unilateral alterations of the joints' moment, joint forces, and the related muscle activity which might impose asymmetrical force to the hip and cause curve progression.

کلیدواژه‌ها English

Scoliosis
Gait
Power Generation
Power Absorption
symmetry
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