What muscles in hand is only in thumb side?
What travels through the carpel tunnel and carpal arch?
What are the fascia in hand?
Extensor retinaculum (dorsal)
Flexor Retinaculum (palmar)
What are the synoveal sheaths in palmar? What are their functions?
To reduce friction between muscles and flexor retinaculum
Where does radial bursae cover? Ulna bursae?
Digis 1-4 and FPL
FDP and FDS + little finger
What are the contents in snuff box?
Layers of hand from dorsal to palm?
deep palmar arch + deep branch ulnar N
Flexor Tendons + Lumbricals
median & superior ulnar N branch & SF palmar arch
What are the fascia in the palmaris aponeurosis
palmaris longus tendon
SF/ Deep transverse metacarpal ligaments
What does trransverse fasculi do? deep transverse metacarpal ligaments?
connect between tendons
support the metacarpals
What is unique about superficial palmar fascia?
It has palmaris brevis muscle
Where is the fibro-osseous tunnels? What does it contain?
in the phalanges on palmar side
fibrous digital sheaths (annular puileys and cruciate fibers)
What is the function of fibro-osseous tunnels?
preven tendons (FDP/FDS) from sagging when hand prone
What is synovial digital sheath?
the sheath that covers the tendons, locating underneath fibrous digital sheaths
What is vincula? What is its function?
It is the subset of FDP and FDS
Pick up blood from digits BS to nuture the FDS and FDP tendons
What is similar between wrist and finger fascia?
In wrist, flexor retinaculum covers ulnar& radial bursae
In finger, annular pulleys cover synovil digital sheaths
What are the intrinsics muscle? Which one is the deepest?
hypothenar and thenar
What does interosseous muscle divide? What unique action does each muscle do?
OIANB of lumbricals
Extensor expansion of digits 2-5 on radial side of proximal phalanges
Flexion of digits 2-5 at MCP joint
Extension ______ at PIP/DIP joints
Ulnar N: digit 4-5
Median N: digit 2-3
Deep palmar arch
What is the nerve supply for interossei muscles? BS?
Deep palmar arch (ulnar A)
What are the muscles in thenar?
Abductor Pollucis brevis
What thenar muscles has sesamoid bone? What is the nerve supply for thenar muscles?
flexor pollucis brevis and adductor pollicis
Median N (except adductor pollicis)
What is the exception of nerve supply in thenar muscles?
Adductor pollicis has ulnar N
What are the hypothenar muscles?
abductor digiti minimi
What cause the adduction of digit 5?
Due to what then index and baby finger has more independent movement?
intertendinous that is only on one side
and extra muscles EDM for baby finger and EI for index
What does extensor retinaculum consist of?
Central tendon of ED
Transverse retinacular lig
Tendons of interosseous and lumbricals
What are the branches of ulnar A in hand?
dorsal and palmar carpal branch
superficial/ deep palmar branch
What are branches from ulnar artery that supply the wrist?
dorsal carpal and palmar carpal branch
What does palmar carpal branch of ulna anastomoses with?
palmar carpal branch of radius
What is the branch of dorsal carpal branch of ulna?
dorsal carpal rete