common non arthritic hand conditions Flashcards
what is this?
mucous cyst
what is mucous cyst?
outpouching of synovial fluid from DIP joint and occurs in patients with OA
what may occur to the nail if a mucous cyst becomes very large?
it may cause a ridge
what are ganglions?
outpouching of synovial cavity therefore is commonly found over synovial joints i.e. wrist
what are ganglions filled with?
synovial fluid
True or false- synovial fluid is like water
False- usually very thick, can be gelatenous
why may it be hard to aspirate ganglions with a small standardized needle?
-because they are filled with synovial fluid which is very thick and can sometimes be gelatenous
what do ganglions present like on examination?
- fluctuate, not attached to overlying skin
- can trans illuminate using pen torch
- usually painless but can feel tight (usually pain is from underlying joint)
what is the ganglion management?
- benign neglect (leave until it gets better)
- if patient not happy it can be aspirated however this can often just fill up again
- excision can be done if they are really large or causing symptomatic compression to adjacent nerves
what do tendons run within?
tendons run within flexor tendon sheath
pathophysiology of trigger finger?
- swelling of tendon leads to irritation and more swelling
- tendon gets caught on edge of A1 pulley
- pain over A1 pulley (MC head)
- this causes sticking of finger usually in flexion (triggering)
what may trigger finger present like on examination?
- demonstrate triggering
- tender over A1 pulley
- feel nodules pass beneath pulley
- trigger finger can be released and brought to full extension
what is trigger finger management?
Conservative treatment:
- often resolves spontaneously
- splint to prevent flexion
Tendon sheat injection (most often done)
- steroid + LA
- may be repeated up to x2 and is often curative
Surgery (if injection has been done x2 and it is not cured)
-divide A1 pulley (NO OTHERS)
what does the carpal tunnel contain?
4x FDP tendons (flexor digitorus profundus)
4 x FDS tendons (flexor digitorus superficialis)
flexor pollicis ligament
Median nerve
what does the median nerve do in the hand?
provides motor to LOAF
Lateral 2 lumbricals
Oppolis pollicis
Abductor pollicis brevis
Flexor pollicis brevis
Sensory to palmer aspect of hand, thumb, index, middle and radial half of ring finger
how does carpal tunnel syndrome usually present?
- often sensory involvement to radial 3 1/2 finger
- often worse at night
- relieved by shaking hand
- pain, pins and needles, numbness
what examinations are done in carpal tunnel syndrome?
- Examination of LOAF muscles
- Phalens test
- Tinels test
- Nerve conduction studies
- Kamath and Stothard carpal tunnel questionnaire
what is DeQuervain’s tenosynovitis?
inflammation within the tendon sheaths within the first extensor compartment (abductor pollicis longus + extensor pollicis brevis)
what specil test is used for diagnosing De Quervains syndrome on wrist/hand examination?
Finkelsteins test
-if they have pain over abductor pollicis longus and extensor pollicis brevis then it is a positive test
what is Dupuytren’s contraction?
-abnormal thickening of the skin in the palm of the hand at the base of your fingers. This thickened area may develop into a hard lump or thick band leading to fingers curling
what is Paronychia?
infection within nail fold resulting in pus collection that is often found in children
what is Paronychia?
infection within nail fold that is often found in children
what is a flexor tendon sheath infection?
- a surgical emergency!!
- infection within the flexor sheath, tracking up palm and arm causing limited (active and passive) extension due to pain
