Meniscus and ligament knee injuries: Difference between revisions
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==Background== | ==Background== | ||
*Anterior Cruciate Ligament | |||
**Limits anterior translation of tibia | |||
**75% of all hemarthroses are caused by disruption of ACL | |||
*Posterior Cruciate Ligament | |||
**Limits posterior translation of tibia | |||
**Isolated injuries are rare | |||
*Medial Collateral Ligament | |||
**Provide restraint against valgus (outward) stress | |||
*Lateral Collateral Ligament | |||
**Provide restraint against varus (inward) stress | |||
==Diagnosis== | ==Diagnosis== | ||
===ACL=== | |||
#Anterior Drawer Sign | |||
##Pt supine, knee flexed 90', attempt to displace tibia from femur in a forward direction | |||
##Displacement of >6mm compared w/ opposite knee indicates injury | |||
#Lachman Test | |||
##Pt supine, knee flexed 30', femur held w/ one hand, prox tibia pulled up w/ other hand | |||
# | ##Displacement >5mm or soft end-point indicates injury | ||
# | ===PCL=== | ||
## | #Posterior Drawer Sign | ||
## | ##Pt supine, knee flexed 90', attempt to displace tibia from femur in backward direction | ||
===Meniscus=== | |||
#Symptoms | |||
# | ##"Locking" of joint or sensation of popping, clicking, or snapping | ||
## | #Signs | ||
##Effusions that occur after activity | |||
# | ##Joint-line tenderness | ||
## | #Tests | ||
### | ##McMurray, grind test only 50% Sn | ||
## | |||
# | |||
## | |||
==Treatment== | |||
*Knee immobilizer, ice, elevation, ambulation as soon as comfortable | |||
*Ortho referral | |||
==Source== | ==Source== | ||
*Tintinalli | |||
[[Category:Ortho]] | [[Category:Ortho]] |
Revision as of 19:00, 13 February 2012
Background
- Anterior Cruciate Ligament
- Limits anterior translation of tibia
- 75% of all hemarthroses are caused by disruption of ACL
- Posterior Cruciate Ligament
- Limits posterior translation of tibia
- Isolated injuries are rare
- Medial Collateral Ligament
- Provide restraint against valgus (outward) stress
- Lateral Collateral Ligament
- Provide restraint against varus (inward) stress
Diagnosis
ACL
- Anterior Drawer Sign
- Pt supine, knee flexed 90', attempt to displace tibia from femur in a forward direction
- Displacement of >6mm compared w/ opposite knee indicates injury
- Lachman Test
- Pt supine, knee flexed 30', femur held w/ one hand, prox tibia pulled up w/ other hand
- Displacement >5mm or soft end-point indicates injury
PCL
- Posterior Drawer Sign
- Pt supine, knee flexed 90', attempt to displace tibia from femur in backward direction
Meniscus
- Symptoms
- "Locking" of joint or sensation of popping, clicking, or snapping
- Signs
- Effusions that occur after activity
- Joint-line tenderness
- Tests
- McMurray, grind test only 50% Sn
Treatment
- Knee immobilizer, ice, elevation, ambulation as soon as comfortable
- Ortho referral
Source
- Tintinalli