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Updated: Jan 9, 2026

Posterior Approach for Debridement of the Psoas Abscess
Published on: March 2, 2020
Multi-headed psoas major - case report
Marta Pośnik1, Krystian Maślanka2, Nicol Zielinska2
1Department of Anatomical Dissection and Donation, Medical University of Lodz, Łódź, Poland.
Background:
Numerous anatomical variations have been documented in muscles from various human body regions. Here, we describe an exceptionally uncommon instance of a psoas major muscle exhibiting a multiheaded configuration with diverse morphology.
Materials And Methods:
During a routine dissection of the posterior abdominal wall, an abnormal muscle was observed. The muscle was identified, photographed, and subjected to further measurement.
Conclusions:
Atypical morphology of commonly occurring anatomical structures may lead to numerous clinical consequences, therefore knowledge regarding morphological variability seems crucial and worth documenting.

