Ligament tears (Knee) Flashcards
1
Q
Is the LCL or MCL more commonly injured and why?
A
MCL
- it’s less mobile (being partially attached to the medial meniscus)
2
Q
How are knee ligament injuries graded?
A
Grade 1= few fibres torn
Grade 2 = more fibres torn
Grade 3 = complete tear
3
Q
How do ACL ruptures most frequently occur?
A
Non-contact sports related injuries:
- Cutting
- Twisting
- Landing action
(where foot is plated on ground + knee pivots into adduction & medial rotation)
4
Q
What specific tests are used to aid the diagnosis of an ACL injury?
A
- Anterior draw test
- Lachman’s test
- Positive sweep test (seen on examination due to intra-articular swelling)
5
Q
Why are PCL injuries less common?
A
- Strong
- Prevent posterior translation of the tibia
6
Q
How does PCL injury usually occur?
A
Through hyperextension or a forceful AP translation of the tibia while in flexion
