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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Dr Sheila Strover (Editor)
BSc (Hons), MB BCh, MBA

See biography...