Grips/prehensions: ch 13 (hand) Flashcards
used when an object must be help forcefully while being moved by more proximal muscles
power grip
finger flexors grip, finger extensors assist, thumb adducts with wrist in neutral or slightly extended position
power grip
cylindrical grip, spherical grip, and hook grip are
power grips
used when an object must be manipulated in a finer type movement
precision grip/prehension
tips of fingers and thumb is used, palm usually isn’t involved, and proximal joints don’t move
precision grip/prehension
pad to pad (pinch) grip, tripod grasp (three jaw chuck), pad to side (lateral prehension), lumbrical (plate) grip, tip to tip (pincer) grip, side to side grip are
precision grip/prehension
pinch grip
pad to pad
MCP and PIP joints of fingers flexed, thumb abducted, distal joints are extended bringing pads of fingers and thumbs together
pad to pad
three jaw chuck grip
tripod grasp
most common; uses three jaws to hold an object
tripod grasp
holding mechanism
chuck
lateral prehension
pad to side
pad of extended thumb pressing an object against radial side of index finger
pad to side
strong grip but allows less fine movement
pad to side
thumb adduction helps; terminal device of upper extremity prosthesis adapts this type of grip
pad to side
plate grip
lumbrical grip
MCP flexed, PIP and DIP extended, thumb opposed fingers holding an object horizontal
lumbrical grip
action is to flex MCP and extended IPs
lumbrical grip
pincer grip
tip to tip
hard to do with long finger nails
tip to tip
bringing tip of thumb up against the tip of another digit usually index finger
tip to tip
requires adduction of index finger and abduction of middle finger
side to side
weak grip and not much precision; thumb is not involved
side to side
