guest lecture Flashcards
how do you check the median nerve
okay sign
how do you check the radial nerve
thumbs up
how do you check the ulnar nerve
restroom sign
what is the carpal tunnel syndrome
entrapment of the median nerve in the carpal tunnel
what are motor impairments of carpal tunnel syndrome
weakness and atrophy of the thenar muscles
what passes thru the carpal tunnel
flexor digitorum superficial
flexor digitorum profundus
flexor pollicis longus
median nerve
when you get surgery for carpal tunnel syndrome what are you releasing
the transverse carpal ligament
the transverse carpal ligament does not
make bowstring
what is median nerve palsy
impaired sensation among palmer aspect of radial half of hand
if you have proximal median nerve palsy then you have loss of
anterior compartment of forearm (except FCU and medial half of FDP)
is you have distal median nerve palsy then there is loss of
thenar muscles and lateral 2 lumbricals
what is ape hand
atrophy of thenar muscles
where dies the thumb rest in ape hand
in addiction
ape hand is described in
resting position
what is the hand of benediction
extension of digits 1-3 when actively making a fist
what is radial nerve palsy
impaired sensation along dorsal aspect of thumb and radial half of the hand
radial nerve palsy causes a loss of muscles in
posterior arm and forearm with a decreased grip strength
what is wrist drop
wrist rests in flexion
what does wrist drop limit
the ability to extend teh wrist and fingers
what is ulnar nerve palsy
impaired sensation along the palmar aspect of digit 5 and ulnar half of digit 4
proximal ulnar nerve palsy leads to loss of
FCU and medial half of FDP
distal ulnar nerve palsy leads to loss of
intrinsics , adductor pollicis , hypothenar muscles, and medial 2 lumbricals
what is Claw hand
MCO joints are hyperextended and Ip joins are flexed
claw hand leads to
loss of intrinsic muscles
clawing is most pronounced in what fingers
medial
in claw hand the lateral 2 fingers still have
lumbricals inn by median nerve
DR. CUMA
Drop wrist with Radial nerve injury
Claw hand with Ulanr nerve injury
Ape hand with Median nerve injury
what is the treatment of the brachial plexus injury
donor activated focused rehabilitation approach (DAFRA)
the donor activated focused rehabilitation approach is used to strengthening what
new neural pathways to maximize functional outcomes
other treatments for the brachial plexus injury
grip strengthening
dexterity
what is DeQuervain’s syndrome
inflammation of the 1st dorsal compartment
DeQuervain’s syndrome is caused by
young mothers lifting children
repeated lifting or use of thumb
what 2 muscles are affected with DeQuervains syndrome
extensor pollicis brevis
abductor pollicis longus
DeQuervains syndrome prevents thumb
flexion
extension
abduction
what is the treatment of DeQuervains syndrome
thumb spica orthotics
what does the thumb spica orthosis do
mobilize IP joint of thumb
what does surgery do in the DeQuervains syndrome
release the extensor retinaculum
what is the purpose of the extensor hood
extension of the IP joints
the extensor hood facilitates coordinated
finger flexion
what type of fibers are the sagittal band
transverse fibers
is teh sagittal band on top or bottom of it ehED
top
what does the sagittal band stabilize
volar plates and MCP joints
what does the sagittal band prevent
bowstringing of extensor tendons
what is the purpose of the central tendon
extends the PIP joint
where does the central tendon of the EH attached
at the MIP joint
what does the lateral band of the EH do
extends teh DIP joint
where does the lateral band come off of
the central tendon
which band is more distal int he extensor hood
lateral band
what does the oblique retinacular ligament do
coordinates the PIP and DIP motion
what does the PIP do at the oblique retinacular ligament
pip extension elongates at the ORL
what happens when the PIP extension enlongates at the oblique retinacular ligament
passion tension to extend the DIP
what does the DID do at the ORL
dip flexion enlongates
what happens when he DIP flexion enlongates at the ORL
passive tension to flex PIP
what does the terminal tendon do
extends tehDIP joint
what tendon des swan neck deformity damage
the terminal tendon
what causes swan neck deformity
direct blow to the DIP joint when the digits are extended
what is the deformity of the swan neck
PIP joint is hyperextended and the DIP joint is flexed
what is it called when someone has a duvet injury to the central tendon/slip , votary PIP joint dilation or secondary to RA
boutonnière deformity
what is the deformity for boutonnière deformity
PIP joint flexion and DIP joint hyperextension
what tendons pass thru a lully system
flexor digitorum superficial
flexor digitorum profundus
how many annular pulleys are there
5
how many crucial pulleys are there
2
what is the orientation of the annular pulleys
transverse orientation (horizontal
what is the orientation for the crucible pulleys
oblique orientation
what do the pulleys prevent
bowstringing of flexor tendons
what do the pulleys promote
tendon gliding
what do the pulleys increase
mechanical advantage for finger flexion
what are the2 most important pulleys
A2 and A4
where is teh A2 pulley located by
the MCP joint
where is the A4 pulley located
near the PIP joint
A2 and A4 pulleys are essential to
prevention bowstringing around these joint
what is another work for stenosis tenosynovitis
trigger finger
in trigger fingers what is there a fighting of
the flexor tendon sheath because of repetitive gripping activities
where is trigger finger most common at
at the MCP joint
in trigger finger as the finger bends and straightens what happens
the fibrotic section becomes stuck under th pulley and pops when it passes thru
what is the treament for trigger finger
relation motion orthosis
what does surgery do for trigger finger
release the affected tendon
