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Medical Journal of Islamic Republic of Iran، جلد ۳۶، شماره ۱، صفحات ۱-۶
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عنوان انگلیسی Does the Extension Torque Control Differ between Injured and Uninjured Knees of ACL-Deficient Individuals?
چکیده انگلیسی مقاله Background: Knee extension torque control decreases after anterior cruciate ligament (ACL) rupture. There is a controversy in neuromuscular control changes on the uninvolved side. We intended to evaluate the steadiness and accuracy of quadriceps muscle control in the healthy and deficient sides of people with acute ACL rupture.    Methods: In this cross-sectional study, thirteen men with ACL rupture (age: 27.8±7.0, body mass index (BMI): 24.7±2.25: 24.7, days from injury: 48.1±21.3) participated in the study. We measured quadriceps force control, which is quantitatively assessed by the standard deviation (SD) of joint torque for a predefined submaximal target. The accuracy of muscular control or performance of quadriceps is commonly quantified by the root mean square of error (RMSE) was also measured. A two-way analysis of variance was conducted to assess SD and RMSE of two levels of quadriceps contraction (30% of muscle voluntary contraction (MVC), 50% of MVC) across both healthy and deficient knees.    Results: There was a significant main effect for SD and RMSE of MVC percentage (p< 0.001). SD of quadriceps torque in 50% of MVC (1.44 ± 0.13) was higher than 30% of MVC (0.88 ± 0.1). In contrast, there was no significant main effect for SD and RMSE of knee condition.    Conclusion: After unilateral ACL rupture, the neuromuscular system becomes defected and quadriceps muscle control is then reduced in the healthy side. Therefore, the healthy side is also vulnerable to ligamentous damage. Besides, with the increasing intensity of physical activities, neuromuscular control decreases and the risk of re-injury rises.
کلیدواژه‌های انگلیسی مقاله ACL Rupture, Quadriceps Force Control, Neuromuscular Control, Knee Extension Torque
نویسندگان مقاله | Zahra Nemati
Rehabilitation Research Center, Department of Orthotics and Prosthetics, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran


| Mohammad Ali Sanjari
Rehabilitation Research Center, Department of Basic Rehabilitation Sciences, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran


| Maryam Jalali
Rehabilitation Research Center, Department of Orthotics and Prosthetics, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran


| Abolfazl Bagheri Fard
3. Bone and Joint Reconstruction Research Center, Department of Orthopedics, Shafa Yahyaeian Orthopedics Hospital, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
نشانی اینترنتی http://mjiri.iums.ac.ir/browse.php?a_code=A-10-7147-1&slc_lang=en&sid=1
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کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده Rehabilitation
نوع مقاله منتشر شده Original Research
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