An aponeurosis is a fibrous sheet-like expansion of a tendon, for example of the biceps femoris or quadriceps muscles.

lateral retinaculum of the knee
The lateral retinaculum is a fine sheet of aponeurotic tissue stabilising the patella.


Lateral retinaculum is an aponeurosis

The lateral retinaculum around the patella is an extension of the fibrous 'aponeurosis' of the quadriceps muscles.


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Biceps femoris and semitendinosus tendon/aponeurosis strain during passive and active (isometric) conditions. Kellis E. J Electromyogr Kinesiol. 2016 Feb;26:111-9. doi: 10.1016/j.jelekin.2015.11.007. Epub 2015 Dec 10.

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