Upper Extremity part 1 Flashcards
What area of the hand does the median nerve encompass?
1st 3.5 fingers
What area of the hand does the ulnar nerve encompass?
Last 2.5 fingers
What area of the hand does the radial nerve encompass?
Pollicis
2nd and 3rd digits up to DIP joints
Components of ganglion cysts
MC soft tissue tumors of the hand
Dorsal and volar (palm) wrists
Fluctuates in size
PE of ganglion cyst
Fluid-filled
Transilluminated
Mild tender to palpation
Tx for ganglion cysts
Splint NSAIDs Aspiration Surgery Aspiration does not fix the problem When in doubt, choose the conservative option
How does a mallet finger present?
Extension of MTP and PIP
Flexion of DIP
When can a mallet finger be seen?
RA
How does a boutinniere deformity present?
PIP flexion (Hyper)extended DIP joint
What is the pathology of boutinniere deformity?
Rupture of central slip of extensor tendon
What is the cause of boutinniere deformity?
Jammed finger secondary to arthritis
Tx for boutinniere deformity
8 wks full extension
8 wks nighttime extension
How does swan neck present?
PIP hyperextension
DIP flexion
What is the pathology of a mallet finger?
Terminal extensor tendon rupture
Bony or soft tissue
AKA baseball finger
Tx for mallet finger
Stack splint
Presentation of Dupuytren dz
Contraction of palmar fascia "Viking" dz Painless nodules Progressive Ring finger = mc
What is a common complaint of someone with Dupuytrens?
Fingers “catching” on things and having trouble putting them in pockets
RF for Dupuytrens
Older Men DM Smoking FHx
Components of trigger finger
A1 pulley
Locking/catching
Painful nodule
What is the definitive tx for Dupuytren?
Surgery
What is the difference between Dupuytrens and trigger finger?
Dupuytrens is not painful
Dupuytrens is a cord, whereas trigger finger is a nodule
Trigger finger is not progressive
Tx for trigger finger
Injection
NSAIDs
Surgery
S/sx of carpal tunnel syndrome
Numbness/tingling Drop things Can't open jars/lids Nighttime pain Thenar atrophy
Tests for carpal tunnel syndrome
Tinels test
Phalen’s test
EMG
Tinels test
Tap over transverse carpal ligament
Pos if reproduce the pain
How long should the Phalen’s test be held for?
60 secs
What is the purpose of the EMG?
Diagnostic procedure to help assess muscles/nerves
Reveal nerve dysfunction, muscle dysfunction or problems with nerve-to-muscle signal transmission
Process of the EMG?
Uses electrodes taped to the skin (surface electrodes) to measure the speed and strength of signals traveling between two or more points
Needle EMG, a needle electrode inserted directly into a muscle records the electrical activity in that muscle
Components of CMC arthritis
Pain with pinch/grip
Decreased strength
Pos grind test
What is seen on X-ray with CMC arthritis?
Cyst
Loss of joint space
White indicates sclerosis
Tx of CMC arthritis
Thumb spica splint NSAIDs OT Injection Referral
Where can de Quervain tenosynovitis be found?
First dorsal compartment
- Abductor pollicus longus
- Extensor pollicus brevis
How does de Quervain tenosynovitis present?
Pain over radial styloid
Pos Finkelsteins test
Tx for de Quervains
Thumb spica
Injection
NSAIDs
Surgery
Components of gamekeepers thumb
AKA skiers thumb
Rupture of UCL
Important stabilizer
Pain/swelling in ulnar aspect of thumb
How soon should one perform surgery for gamekeepers thumb?
Within first 3 wks of injury
What is flexor tenosynovitis?
Flexor tendon sheath infection
Components of flexor tenosynovitis
Fusiform swelling
Tenderness along sheath
Pain with passive stretch
Flexed position when at rest
How does a boxer fx occur?
With punching
S/Sx of boxer fx
Pain/swelling
Tx for boxer fx
Ulnar gutter splint
Refer PRN for sx or reduction
Cause of scaphoid fx
Most commonly fxed carpal bone
Non-union and osteonecrosis
Presentation of scaphoid fx
Snuff box tenderness
Workup of scaphoid fx
Scaphoid views: X-ray
Tx of scaphoid fx
Thumb Spica/refer
When in doubt- treat
Colles fx
MC distal radius fx
Dinner fork appearance
Falling on outstretched hand
PE of Colles fx
Pain
Swelling
Tenderness
Deformity
Tx for Colles fx
Casting vs open reduction in field…refer