Psoas Minor Muscle Injuries: Rare and Understudied
The psoas minor muscle, a small muscle located on the front side of the psoas major, is a topic of specific interest in medical research. Despite its clinical significance, there is a lack of recent, targeted scientific publications on the frequency of psoas minor muscle injuries due to its rudimentary nature and rarity.
The psoas minor originates from the T12 and L1 vertebrae and attaches to the iliopubic eminence on the pelvis. It acts as a weak flexor of the trunk, assisting in forward bending. Straining this muscle can result in a significant reduction in hip motion range. Interestingly, approximately 50% of people do not have a psoas minor muscle. The nerve controlling the psoas minor is the anterior primary rami of L1.
Current research focuses on anatomical studies of the psoas minor's prevalence and variability, clinical hints of rare cases where the muscle becomes pathologically noticeable, and comparative anatomy. While there are some scholars who have studied the prevalence of the muscle, specific studies on injury frequency are scarce. Notable studies include 'Prevalence and anatomy of the psoas minor in a contemporary cohort' by Tubbs et al. and 'A study of the presence and variability of the psoas minor and its clinical significance' by Vrtovec et al.
In conclusion, while the psoas minor muscle plays a role in trunk flexion and hip motion, its rudimentary nature and rarity make it less clinically relevant. Specific research on its injury frequency is limited, with no known researchers or teams currently focusing on this topic. Further research, potentially through register studies or retrospective analysis of clinical images, could provide more insights into psoas minor injuries.
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