The hypothenar eminence is formed by three intrinsic muscles, with palmaris brevis lying superficially outside the compartment. All four muscles in this region are innervated by the ulnar nerve (C8, T1). • Abductor digiti minimi – deep branch of ulnar nerve • Flexor digiti minimi brevis – deep branch of ulnar nerve • Opponens digiti minimi – deep branch of ulnar nerve • Palmaris brevis – superficial branch of ulnar nerve Together, the hypothenar muscles enable small finger motion, cupping of the

There are three groups of intrinsic hand muscles: thenar group, hypothenar group, and central compartment group. Here we see the three muscles of the thenar eminence group. They are, from superficial to deep, abductor pollicis brevis, flexor pollicis brevis, and opponens pollicis (in alphabetical order: A, F, O 😊). “Pollicis” means thumb. They all move the thumb. Check out my LearnMuscles Continuing Education (LMCE) streaming platform with more than 4,000 videos. #thenar #thenareminence #hand #