revision end of sem Flashcards
what imaging modality for OA
- Xray
what imaging modaility for RA
- xray and bloods
what imaging modality for gout
US
MRI T1 sequence
T1 weighted:
- fat = bright
- fluid = dark
- bones = bright
anatomical
mri t2 sequence
- fat = intermediate-bright
- fluid = bright
- bone = intermediate
pathological
US features
- tendon
- bursa
- bone
tendon = mixed
bursa - hypo echoic (low echoes)
bone - hyper echoic (high echoes)
Epiphyseal inhuries
Osetochondritis
group of conditions in which no associated cause for avasuclar necrosis can be found
osteochrondrosis
kohlers disease - rare bone disorder of the foot in children that may be result of stress-related compression at growth
friedburg infraction
legg-perthes calve
osgood-sclatter
Osteochonritis dissecans (OCD)
defined as osteonecrosis of subchorndal bone
- localised lesion in which a segment of subchondral bone and articular cartiliage seperates from the underlying bone, leaving either a stable or unstable fragment
typical imaging features in gout
- US - doppler contour sign
- Radiographic changes
absence of osteoprosis
joint space narrowing = late manifestation
erosions near joint margins - not till after 2-3 years
pseudogout
acute and subactute chronic arthritis
Cartilage most commonly found in synovial joints
Hyaline cartilage
The collateral ligaments that surround the 1st metatarsal phalangeal joint would best be described as
Peri-articular structures
Gout risk factors
- sex
Poor renal function
Positive fam history
