Thenar space (Adductor space)

Boundaries: The thenar space is shown as purple in the diagrams here. In the cross section, the midpalmar space is blue, the radial bursa is light blue and the ulnar bursa is red.) Clinical Significance: The thenar space lies just superficial to the adductor pollicis muscle, forming a plane connecting the deep aspects of the radial bursa and the ulnar bursa. Abscess or space occupying lesions may spread transversely through the thenar space deep in the palm between the thumb and the carpal tunnel. An example of a thenar space abscess is shown here.

Anatomy Home Page