SUMMARY
Objective. The objective of this study was to observe the structural and physiological changes in vastus medialis and its impact on short-term patient-reported knee function following anterior cruciate ligament (ACL) injury and reconstruction.
Patients and methods. A prospective observational study was conducted on 16 young individuals with an ACL injury. The cross-sectional area (CSA) of vastus medialis was measured using ultrasonography. Surface electromyography of vastus medialis (VM) was assessed during maximum voluntary isometric contraction (MVIC). These parameters were assessed preoperatively and six months postoperatively along with the International knee documentation committee (IKDC) 2000 score. The unaffected limb was used as control. Following ACL reconstruction surgery, all individuals underwent standard rehabilitation protocol. ANOVA with post hoc analysis was used to determine the difference in CSA and MVIC between the injured and unaffected sides.
Results. When compared to the unaffected side, we found that the CSA of the VM decreased by 13.39% following injury and subsequently decreased by 41.05% at the end of 6 months post ACL reconstruction (p = 0.001). Similarly, after injury, the MVIC of VM was lowered by 12.05%, and after six months of ACL reconstruction, it was reduced by another 23.15% (p = 0.075). On the contrary, the subjective knee function score improved considerably after six months following surgery (p = 0.001).
Conclusions. To conclude, our study observed an inverse relationship in patient-reported functional outcome measures and structural and physiological morphology of VM in individuals who have undergone ACLR.
Impact of Structural and Physiological Changes in the Vastus Medialis Muscle Following Anterior Cruciate Ligament Injury and Reconstruction on Short Term Patient-Reported Knee Function
G. Balaji, G. Kumar, M. Jagadevan, T. Ramalingam, D. Barathi, G. Singh Gaur
Original Article, 159-164
Keywords: ACL injury, ACL reconstruction, electromyography, IKDC, quadriceps muscle,
Table of Content: Vol. 12 (No.2) 2022 April/June
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Impact of Structural and Physiological Changes in the Vastus Medialis Muscle Following Anterior Cruciate Ligament Injury and Reconstruction on Short Term Patient-Reported Knee Function
G. Balaji, G. Kumar, M. Jagadevan, T. Ramalingam, D. Barathi, G. Singh GaurOriginal Article, 159-164 -
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