Influence of Lateral Extra-Articular Tenodesis Combined with Anterior Cruciate Ligament Reconstruction on Knee Muscle Strength
DOI:
https://doi.org/10.63403/re.v32i2.381Keywords:
Anterior Cruciate Ligament, Extra-Articular Tenodesis, Isokinetic, Muscle StrengthAbstract
Introduction: recent studies have shown that combining anterior cruciate ligament reconstruction (ACLR) with lateral extra-articular tenodesis (LET) can reduce the re-rupture rate by 2.5 times. However, since this procedure involves the iliotibial band, it could affect the recovery of knee muscle strength.
Objetives: our objective was to compare muscle strength recovery measured through isokinetic strength testing in patients undergoing ACL reconstruction with and without associated extra-articular tenodesis (LET).
Materials and methods: a retrospective cohort study included 68 patients, divided into two groups: ACLR with LET (n=20) and isolated ACLR (n=48). Knee extensor and flexor muscle strength was measured 12 months post-surgery using a HUMAC NORM isokinetic dynamometer, evaluating peak torque at 60°/s (Nm) following our center’s protocol. Statistical analyses were conducted using univariate and multivariate logistic regression models in STATA v.18.0, with results expressed as odds ratios (OR) and 95% confidence intervals (CI).
Results: 66.2% of the patients were male (n=45), with an average age of 23.9 years (SD=8.0). The ACLR with LET group showed less imbalance in extensor and flexor muscle strength compared to the isolated ACLR group; however, these differences were not statistically significant (p=0.55 and p=0.63).
Conclusion: adding LET to ACLR does not appear to significantly influence functional outcomes in terms of extensor and flexor muscle strength balance 12 months postoperatively.
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