Angle-specific knee muscle torques of ACL-reconstructed subjects and functional tests

What is it about?

The use of peak torques to assess isokinetic muscle strength ignores the effects of joint angle and muscle length. We evaluated both angle specific and peak torques after knee muscles after anterior cruciate ligament reconstruction. Our results showed that concentric knee extensor strength at 90° is determinant of single legged hop test performance and concentric knee extensor strength at 60°is determinant of vertical jump and reach test. Also we evaluated peak torque angles of both reconstructed and healthy limbs and found no difference between those.

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Why is it important?

It is clear that knee muscle strength affects functional performance of the knee. However the effect of angle-specific isokinetic knee muscle strength on functional performance of knee was investigated in this study first time. This study will guide physiotherapists and athletic trainers about the factors related with functional performance of the knee. In this study we analysed knee eccentric and concentric flexor and extensor strength in a detailed manner, and our findings will inform researchers about the importance of angle specific knee extensor strength.

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