ArticleCureus2026
An Unusual Accessory Muscular Belly of the Flexor Carpi Radialis Muscle.
Article in Cureus, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
8 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Variations of the upper limb musculature are of clinical interest, potentially impacting diagnostic interpretation and surgical outcomes. This report describes a rare anatomical variation identified in a 72-year-old male cadaver, i.e., an accessory flexor carpi radialis (FCR) originating from the medial border of the brachioradialis (BR). While current classifications categorize FCR variants based on origins from the bicipital aponeurosis, biceps brachii, or pronator teres, this case represents a unique morphology. Embryologically, such bundles likely arise from the incomplete separation of the common flexor-pronator mass during morphogenesis. Clinically, these accessory bellies may be misidentified as soft tissue tumors on imaging or complicate surgical procedures like tendon transfers and volar approaches to the radius. Furthermore, their proximity to the superficial branch of the radial nerve creates potential sites for nerve compression and entrapment syndromes.
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