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 #

Thenar Eminence 101 🖐️ That muscular pad at the base of your thumb — is the thenar eminence, and it’s everything for hand function. 💪 Key muscles: • Abductor Pollicis Brevis – lifts the thumb away from the palm • Flexor Pollicis Brevis – bends the thumb • Opponens Pollicis – brings the thumb across the palm for opposition 🧠 Why it matters: These muscles allow pinching, gripping, buttoning, texting, writing, and all fine motor skills. Weakness or atrophy here often points to median nerve invol