*Correspondence to: Dr. Pranav Sosale, Texas A&M Naresh K. Vashisht College of Medicine, Bryan, Texas, USA
Received: Jan 02, 2026; Accepted: Jan 17, 2026; Published: Feb 11, 2026
Citation: Sosale P (2026) Asymmetrical Bilateral Presentation of Palmaris Profundus: A Case Report. J Anatomical Variation and Clinical Case Report 3:12. DOI: https://doi.org/10.61309/javccr.1000
Copyright: ©2026 Sosale P. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
ABSTRACT
The palmaris profundus (PP) muscle is a rare anatomical variant of the forearm musculature. It has a low prevalence and a wide range of presentations. Its proximity to the median nerve within the carpal tunnel stipulates its clinical significance with respect to both surgical and diagnostic contexts. During routine cadaveric dissection of a 97-year-old male, bilateral variants of the PP muscle were identified. The right forearm exhibited a Type I PP, originating from the anterior surface of the radius and inserting into the flexor retinaculum. The left forearm revealed a previously undocumented variant, originating from the proximal radius and coursing deep to the flexor digitorum superficialis, inserting into the palmar aponeurosis. This configuration does not align with existing classifications as is proposed as Type VI: palmaris profundus inversus radialis proximalis. This case study will contribute to the anatomic literature by expanding and bringing awareness to the various classifications of PP variants. Recognition of this anatomical abnormality is essential for anatomists, surgeons, and medical educators as they may influence outcomes in carpal tunnel release, tendon grafting, and peripheral nervous system assessments.
Keywords: Palmaris Profundus; Anatomical variation; Accessory forearm muscle; Carpal tunnel
Figure: Right Palmaris Profundus Overview.