The goal of this interventional study is to measure medial vastus inhibition and associate it with AMI classification in patients with ACL rupture. The main question it aims to answer is:
Is there a correlation between AMI classification and clinical assessment after ACL rupture ? Participants will undergo surface EMG and Myotonometry.
Patient, male or female, aged ≥ 18 years and < 45 years
Patient with an ACL rupture confirmed by MRI
Patient with an ACL rupture ≤ 30 days old
French speaking patient who does not object to the use of his/her data
Patient with previous ipsi or contralateral knee injury/surgery
Patient with multi-ligament injury
Pregnant or breastfeeding woman
Single group
Clinical testing
Other interventionIntervention includes : * Surface EMG to measure inhibition of the VM and the rectus femoris (RF) on the injured and non-injured sides during attempts at voluntary contractions of the knee extensor muscles. * Myotonometry to measure the stiffness of the semimembranosus and biceps femoris (long head) on the injured and non-injured sides under resting conditions
Muscle Surface EMG and AMI correlation
Electrical signal amplitude, expressed in mV, is evaluated at the level of the VM. This electrical signal amplitude is correlated with the level of muscle activation. It is measured with a surface EMG, which measures the activation of the VM during a voluntary attempt to contract the knee extensors. The ratio: Amplitude of the electrical signal from the injured side of the VM / Amplitude of the electrical signal from the non-injured side of the VM is used to determine the inhibition of the VM. AMI is assessed using the Sonnery-Cottet classification (Sonnery-Cottet et al, 2022)
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