Meniscal bearings Flashcards
1
Q
What do meniscal bearing prostheses consist of?
A
Metal femoral component
Metal tibial component
HDP meniscus
2
Q
What are the mechicanal advantages of a meniscal bearing prosthesis?
A
Large contact area = reduce contact stresses
Low degree of constraint - avoid high stresses , other than compression, during load transfer
3
Q
How does the meniscus move during flexion and extension?
A
Forwards during extension
Backwards during flexion
4
Q
How do meniscal bearing prostheses depart from the designs of most knee porstheses?
A
They do not move in a similar way to the normal knee
5
Q
What is the prinicpal disadvantage of meniscal bearing designs?
A
Increased technical difficulty in achieving ligamentous balance and overall alignment without rising dislocation in the moving bearing
