HANDS & UE ORTHO: general Info Flashcards
gross/cylindrical grasp
all fingers/thumb wrap around object handle
- OPPOSITION = YES
- used by small children before finger control required
- impaired in CMC OA
EX: holding onto a handle, grasping a steering wheel
power grasp
- variation of gross grasp
- used when extra force is required, thumb STABILIZES, ulnar fingers most involved
THUMB OPPOSITION = NO - greater effort to control with this grasp = greater risk for injury
EX: holding a hammer while building
hook grasp
fingers “hook” around object without thumb
- radial nerve palsy = can’t form this grasp
- OPPOSITION = NO
EX: carrying a shopping bag/briefcase
spherical grasp
thumb & fingers form “cup” shape to grasp round objects
- OPPOSITION = YES
EX: holding an apple
conoid grasp
hold a cone shaped object, with the apex of the cone at the ulnar side of the palm
- The ring and little fingers provide extra control and stability at the smaller end of the cone
- OPPOSITION = YES
EX: holding an ice cream cone
lateral pinch
- thumb pushes against the side of the index finger to secure an object
- Often used to compensate for weakness or instability of the tip and palmar pinches
- Also used to compensate for poor thumb opposition
- OPPOSITION = NO
EX: holding car keys while starting a car, gathering & sorting paperwork into piles
palmar pinch/3 jaw chuck
- thumb opposes against the tips of the index and middle fingers to secure a small object
- OPPOSITION = YES
EX: pick up, place and push small building blocks together
tip pinch
- thumb opposes the tip of a finger, usually the index finger, to secure a small object
- OPPOSITION = YES
EX: pulling a pin out of a pin cushion
tripod grasp
- variation of palmar pinch, used to hold writing and drawing tools
- shaft of the tool is held by the tips of the thumb and index finger and stabilized by the side of the middle finger near the PIP joint (3 fingers)
- OPPOSITION= YES
quadruped grasp
- Another variation of palmar pinch, used to hold writing and drawing tools
- The shaft of the tool is held by the tips of the thumb, index and middle fingers and stabilized by the side of the ring finger near the PIP joint (4 fingers)
- OPPOSITION = YES
which type of grasp is impaired in radial nerve palsy?
hook grasp
which type of grasp is impaired in CMC OA?
gross/cylindrical grasp
flexors are on what part of the hand/arm?
volar
extensors are on what part of the hand/arm?
dorsal
nerve distribution of the UE
C3-C4 = supraclavicular
C6-C8 = radial
C5-C8 & T1 = median
C8-T1 = ulnar
ulnar nerve distribution of the hand
DORSAL & VOLAR: pinky, ulnar side of ring finger
median nerve distribution of the hand
VOLAR: radial half of ring, middle, index, and ulnar side of thumb
DORSAL: index, middle, radial half of ring finger PIP, ulnar side of thumb
radial nerve distribution of the hand
VOLAR: radial side of thumb
DORSAL: index, middle, radial side of ring below PIP
pillar pain
pain on either side of the carpal tunnel (source is unknown)
Carpal tunnel syndrome
Compression of MEDIAN nerve due to inflammation & repetitive motion with poor positioning
- palmar numbness of 1st – half of 4th finger, general weakness & pain, including pain at NIGHT, NO ROM LIMITATIONS
Assess: sensation, fine motor coordination, weakness
ASSESSMENTS: Semmes Weinstein Monofilament test, Nine hole peg test, dynamometer & pinch gauge (DO NOT TAKE GONI MEASUREMENTS UNLESS SYMPTOMS HAVE BEEN PRESENTS FOR A LONG TIME & ROM IS LIMITED)
+ Tinels sign
+ Phalens sign
+ Moberg Pick Up test
Cubital tunnel syndrome
- Compression of the ulnar nerve at the elbow
- due to repetitive elbow pressure or sustained elbow bending
- Numbness and tingling along ulnar aspect of forearm/ hand, pain at elbow with extreme, weak power grip
- advanced stages = FCU, FDP atrophy to digits 4 & 5, atrophy of ulnar nerve innervated muscles of the hand
+ Tinel’s sign at elbow (pain or sensation)
+ Phalens test
+ elbow flexion test
Double crush injury
a peripheral nerve is entrapped in more than one location
- Intermittent diffuse arm pain and paresthesias with specific postures
Guyon’s Canal
inflammation/irritation due to compression of the ulnar nerve at the wrist
- Numbness and tingling in ulnar nerve distribution of hand; motor weakness of ulnar nerve innervated musculature
- due to ganglion, pressure, fascia thickening
- advanced stages = ulnar nerve innervated muscles atrophy
+ Tinel’s sign at Guyon’s canal
Pronator teres syndrome
Compression of the median nerve between the 2 heads of the pronator muscles
- cause: trauma to the forearm or repetitive overuse, especially against resistance (i.e. turning a manual screwdriver)
- Palmar numbness and numbness of digit 1 - half of 4th digit, with generalized weakness and pain, aching pain in the PROX VOLAR FA, No pain at NIGHT
+ Tinels sign at FA, no night symptoms