Subchondral Cyst Flashcards
1
Q
What is a subchondral cyst?
A
Fluid filled space in a joint which extends from a bone
Affected/ caused by osteoarthritis
2
Q
What is the synovial fluid intrusion theory of a subchondral cyst?
A
- articular surface defects and intra-articular pressure
- intrusion of synovial fluid into the bone forming cyst
3
Q
What is the bone contusion theory of a subchondral cyst?
A
- contact of opposing articular surfaces
- cause subchondral foci of bone necrosis
- causing non-communicating cyst
