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An unusual occurrence of a four-headed psoas major: a case report
Marta Pośnik1, Nicol Zielinska1,2, Konrad Kurtys1
1Department of Anatomical Dissection and Donation, Medical University of Lodz, Łódź, Poland.
Background:
While many structures within the human body demonstrate anatomical variations, this is not typically the case for the iliopsoas muscle complex. However, the present paper describes a case of an anomalous psoas major composed of 4 different muscular heads in a 78-year-old male cadaver.
Materials And Methods:
During a routine dissection of the right posterior abdominal wall, an unusual psoas major was observed, measured, and photographed.
Results:
The psoas major was found to possess 4 muscular heads, otherwise the anatomy of the wall was normal.
Conclusions:
The presence of so many heads could interfere with the functions of the psoas major muscle. Therefore, this anatomical variation merits further study.
