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Folia Morphol (Warsz). 2014 Aug;73(3):359-62. doi: 10.5603/FM.2014.0037.

Anatomy of sartorius muscle.

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Department of Descriptive and Clinical Anatomy, Centre of Biostructure Research, Medical University of Warsaw, Poland.


A sartorius muscle is the longest muscle of the human system. It runs over 2 joints- hip and knee joints. In the study 10 sartorius muscles were examined. They were dissected free of lower human limbs. Dimensions of limbs which these muscles come from and dimensions of the muscles and their component parts were examined. The attention was paid mainly to parts of tendon located inside the muscle belly. The results show that they are either of a comparable length (distal tendon) or several times longer (proximal tendon) than visible parts located outside of the muscle. Moreover, a complex structure of the distal tendon which includes 2 tracts of different places of insertion was stated. Inferior tract inserted in the same place as muscle tendons: semitendinosus and gracilis. The superior tract inserted transversely against the former one. The tendon of the sartorius muscle forms additionally an aponeurosis whose fibres enter into the deep fascia of crus. The muscle belly is characterised with various width on different levels of its length. In half of casess word-like distal segment of belly is formed.


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