Wrist ML/AP axis with muscles
radial & ulnar deviation
does the ECRL have a better moment arm for flexion & extension or radial & ulnar deviation?
radial & ulnar deviation
does the ECU have a better moment arm for flexion & extension or radial & ulnar deviation?
flexion & extension
does the ED have a better moment arm for flexion & extension or radial & ulnar deviation?
flexion & extension
does the FDP have a better moment arm for flexion & extension or radial & ulnar deviation?
flexion & extension
does the FDS have a better moment arm for flexion & extension or radial & ulnar deviation?
radial & ulnar deviation
does the abductor pollicis longus have a better moment arm for flexion & extension or radial & ulnar deviation?
flexion & extension
does the flexor pollicis longus have a better moment arm for flexion & extension or radial & ulnar deviation?
• drawing hammer back • radial deviators firing • want pure radial deviation • wrist flexors & extensors firing in synergy to inhibit flexion & extension
explain what is happening in this image.
• striking back hammer • ulnar deviators firing • want pure ulnar deviation • wrist flexors & extensors firing in synergy to inhibit flexion & extension
explain what is happening in this image.
concentric (moving faster than gravity)
is the image showing an eccentric, concentric, or isometric action?
frontal plane (radial/ulnar deviation)
the anterior-posterior axis lies within what plane?
sagittal plane (flexion/extension)
the medial-lateral axis lies within what plane?
medial-lateral axis
what axis is for flexion and extension?
anterior-posterior axis
what axis is for radial and ulnar deviation?
ECRB
which muscle has a greater moment arm for extension - ECRL or ECRB?
FDS
which muscle has a greater moment arm for flexion- FDS or FDP?
ECU
which muscle has a greater moment arm for radial & ulnar deviation - ECRB or ECU?
ECU
which muscle has a greater moment arm for radial & ulnar deviation - ECRL or ECU?
ECRL
which muscle has a greater moment arm for radial deviation- ECRL or ECRB?
ECU
which muscle has a greater moment arm for ulnar deviation- ECU or FCU?
flexor pollicis longus
which muscle has a larger moment arm for flexion & extension - flexor pollicis longus or extensor pollicis longus?
extensor pollicis longus
which muscle has a larger moment arm for radial & ulnar deviation - flexor pollicis longus or extensor pollicis longus?
extensor pollicis longus
which muscle has a smaller moment arm for flexion & extension - flexor pollicis longus or extensor pollicis longus?
FDP
which muscle has a smaller moment arm for flexion- FDS or FDP?
ECRB
which muscle has a smaller moment arm for radial & ulnar deviation - ECRB or ECU?
ECRL
which muscle has a smaller moment arm for radial & ulnar deviation - ECRL or ECU?
flexor pollicis longus
which muscle has a smaller moment arm for radial & ulnar deviation - flexor pollicis longus or extensor pollicis longus?
after striking the nail
within this image, when would you expect to see radial deviators firing?
• yes • firing after striking the nail • slow down and control ulnar deviation
within this image, would you expect to see radial deviators firing?
