An observational study in Anterior Cruciate Ligament Reconstruction, sponsored by National Yang Ming Chiao Tung University. Completed at 1 site in Taiwan. Open to participants aged 20 Years to 50 Years. Per ClinicalTrials.gov, last updated 2020-11-16.
Sponsored by National Yang Ming Chiao Tung University · Observational
The aim of this study is to investigate the effect of upper limbs motion on lower limb biomechanics and muscle activity during single-leg jump landing after anterior cruciate ligament reconstruction.
More and more people join in different sports in recent years. But the incidence of sports injury also increases. And the most frequently occurring and debilitating knee injury in sports is rupture of the anterior cruciate ligament (ACL). Patients who aim to return to their preinjury sports should undergo anterior cruciate ligament reconstruction (ACLR) in order to maximize knee stability. The overall incidence rate of a second ACL injury within 24 months after ACLR was nearly 6 times greater than that in healthy participants. Although many studies have showed about biomechanical and neuromuscular risk factors during jump landing which were thought to associate with the secondary injury after ACLR, these studies all focused on the motion of lower extremity. But actually, people often use their upper limbs to catch or throw a ball during jump landing in playground. Whether the upper limbs motion will affect the muscle coordination of lower extremity during jump landing is still unknown. Therefore, the purpose of our study is to investigate the effect of upper limbs motion during single-leg jump landing after ACLR.
National Yang Ming Chiao Tung University is the lead sponsor of 201 studies on the registry; 58 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Age between 20-50 years old
Exclusion Criteria:
Kinematics of lower-limb during landing phase
The data will be collected by VICON motion capture system, include hip, knee and ankle joint angle in three plane. (frontal plane, sagittal plane and transverse plane)
Time frame: from taking off to landing, about 5 seconds.
Kinetics of knee joint during landing phase
The data will be collected by VICON motion capture system and calculated by inverse dynamics, include knee flexion/extension moment, abduction/adduction moment, internal/external rotation moment.
Time frame: from taking off to landing, about 5 seconds.
Muscle onset time of lower-limb muscles during landing phase
The data will be collected by wireless electromyography, include rectus femoris, vastus medialis, vastus lateralis, biceps femoris, semitendinosus.
Time frame: from taking off to landing, about 5 seconds.
Muscle activation of lower-limb muscles during landing phase
The data will be collected by wireless electromyography, include rectus femoris, vastus medialis, vastus lateralis, biceps femoris, semitendinosus, anterior tibialis, medial gastrocnemius
Time frame: from taking off to landing, about 5 seconds.
Muscle activation-Hamstring and Quadriceps ratio (H/Q ratio) during landing phase
The data will use the amount of hamstring and quadriceps muscle activation to calculate H/Q ratio.
Time frame: from taking off to landing, about 5 seconds.
This study is completed, as verified in May 2019. You cannot join it, but the record below documents what was studied.
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National Yang Ming Chiao Tung University