patellar instability Flashcards
1
Q
dislocation and subluxation of patella is most common in who
A
adolescents
2
Q
what causes patellar subluxation or dislocation
A
trauma with a tear in the medial patella-femoral ligament or caused by a predisposition due to ligamentous laxity and variation in bony anatomy
3
Q
dislocations can cause
A
an osteochondral fracture with a fragment of hyaline cartilage with or without subchondral bone breaking off
4
Q
what percentage of first time dislocations what a second
A
20%
5
Q
what percentage have multiple discloations
A
10%
6
Q
management
A
as patients grow older knee joint tends to stabilise, but rarely recurrent dislocations may require surgery to correct bony predisposition or reconstruct the medial patella-femorla ligament
