Article
Accessory Palmaris Longus causing carpal tunnel syndrome
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Published: | February 6, 2020 |
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Objectives/Interrogation: The palmaris longus is the most variable muscle of the human upper extremity, and many variations have been describe. One of these variations is the accessory palmaris longus, or more commonly known as the palmaris profundus. In humans, the palmaris longus does not serve any important intrinsic function, however, the clinical applications of this muscle in hand surgery makes it important to recognize and be aware of its normal and variant anatomy.
Methods: We will briefly describe the anatomy and developmental origins of the palmaris longus, and describe the clinical relevance of an accessory palmaris longus by presenting a case report of an 86-year-old female who had right sided carpal tunnel syndrome secondary to an accessory palmaris longus (Figure 1 [Fig. 1], Figure 2 [Fig. 2]).
Results and Conclusions: Awareness of the normal and variants of the palmaris longus is useful for hand surgeons. Furthermore, the accessory palmaris longus is a rare but important entity for the surgeon to recognize during routine carpal tunnel release surgery.