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Extensor Pollicis Longus Thumb Muscle Anatomy - Making that perfect "thumbs up" possible #shorts
The Extensor Pollicis Longus (EPL) is an impressive 5g muscle that works as your thumb's personal elevator. Your #ExtensorPollicisLongus muscle originates from the middle 1/3 of your ulna (forearm bone) and travels to your thumb's tip. It sneaks through the 3rd tendon compartment, wraps around Lister's tubercle like a pulley system, and inserts at the base of your thumb's distal phalanx - precision engineering.
EPL #extensorpollicislongus MUSCLE FUNCTION:
- Extends your thumb at both joints
- Creates the distinctive "anatomical snuffbox" hollow
- Enables complex gripping/pinching motions
Without this muscle, you would have difficulty scrolling your phone and thumb wrestling. When injured, it's called "Drummer's Palsy" - often affecting musicians/others using repetitive hand motions
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BONUS FACT: Humans have more muscles going to the thumb than most animals (even lizards) - 1. Abductor Pollicis Brevis, 2. Flexor Pollicis Brevis, 3. Opponens Pollicis, 4. Adductor Pollicis, 5. Abductor Pollicis Longus, 6. Extensor Pollicis Brevis, 7. Extensor Pollicis Longus, 8. Flexor Pollicis Longus - Reach out to a #handsurgeon today and thank them for being smart & talented enough to work on such complex anatomy. #ThumbMuscles #HumanAnatomy #PhysicalTherapy
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About Dr. Cory Calendine, MD #orthopedicsurgeon #jointreplacement
In the operating room, I get to perform more than 600 hip & knee replacement surgeries each year. From LIVE surgical demos to viral video highlights, together let's explore - react - discuss all things related to bone and joint health

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Opinions expressed are solely my own and do not express the views or opinions of my employer. Information in this video is not intended or implied to be a substitute for professional medical advice, diagnosis and/or treatment. All content [images, digital graphics, text, and other information] contained in this video is for general information purposes only and does not replace or substitute for a consultation with a qualified physician or health professional.