O: Benign MSK Swellings Flashcards
what are the 5 types of benign swellings found in MSK system?
Baker’s cyst, bursitis, sebaceous cysts, myositis ossificans, abscess
what is Baker’s cyst
fluid filled cyst in popliteal fossa
aetiology of Baker’s?
Osteoarthritis association
s/s of Baker’s?
can appear as general fullness of popliteal fossa, non-tender
mx of Baker’s
leave alone or rupture
what is Bursitis?
inflammation of synovial lined sacs that protect bony prominences and joints
commonest sites of bursitis?
knee and trochanter
mx of bursitis
NSAIDs, rest, bursal resection in chronic cases
main complication of bursitis?
infection and abscess formation- mx is drainage/ abx
what is a sebaceous cyst?
cyst found in hair follicle areas
histology of sebaceous cyst?
caseous material
s/s of sebaceous cyst?
mobile discreet swelling
what is myositis ossificans?
abnormal calcification within muscle
histology of myositis ossificans?
fibroblasts, cartilage, bone
epi for myositis ossificans?
common in young active males
aetiology of myositis ossificans?
direct trauma, intramuscular haematoma
s/s of myositis ossificans?
hardiness developing over sight of injury couple days after trauma- swelling, dec ROM, tenderness
x-ray findings of myositis ossificans?
peripheral bone formation with central Lucent area
mx for myositis ossificans
observe, rest, exercises. can only intervene surgically once ossification is complete
what is an abscess?
collection of pus
mx of abscess
surgically drain
