W5- Knee Radiologic Evaluation Flashcards
What are the (6) types of patellar fractures?
- Vertical
- Transverse nondisplaced
- Transverse displaced
- Comminuted nondisplaced
- Comminuted displaced
- Avulsed fragments
What are the (6) types of distal femur fractures?
- Nondisplaced
- Impacted
- Displaced
- Comminuted
- Condylar
- Intercondylar
What are the (6) types of tibial plateau fractures?
- Split
- Split-depression
- Central depression
- Split fracture, medial plateau
- Bicondylar fracture
- Dissociation of metaphysis and diaphysis
What are the (4) types of chondral fractures?
- Osteochondral body, intact articular cartilage
- Osteocartilaginous flap
- Detached osteochondral fragment
- Detached osteochondral fragment in joint
- What is a Segond Fx?
- What is it usually indicative of?
- lateral tibial plateau avulsion fx
- usually indicative of ACL tear (75%)
Are most knee dislocations medial or lateral?
Lateral (95%)
What is a multipartite patella?
Multipartite patella is an uncommon congenital abnormality that represents normal variant pathology and is a result of a failure of ossification during development.
-Can also happen after a Fx that doesn’t heal all the way.
What is a tibial spine avulsion Fx usually indicative of?
ACL injury
What is the sesamoid bone is posterolateral capsule of the knee?
Knee fabella
What are some characteristic findings of OA? (5)
- genu varum
- diminished cartilage space
- lateral patellar movement
- osteophyte
- increased sclerosis
What are the Ottowa Knee Rules?
- Age >55
- Tenderness at patella
- Tenderness at fibular head
- Inability to flex to 90 degrees
- Inability to bear weight for 4 steps