Motions to avoid with posterolateral corner injury - ✔✔- tibia ER
- hyperextension
- knee varus
grade 3 posterior cruciate ligament injury, what is recommended regarding
weight bearing status - ✔✔Partial weight bearing for 2-4 weeks after injury
Reason: Patients who have a grade 3 posterior cruciate ligament injury should be
partial weight bearing for 2-4 weeks after injury or surgery with hinge brace
locked in extension, and then move to full weight bearing after that point
(Janousek 1999 and Logerstedt 2 2010).
external rotation recurvatum test and the posterior sag sign are positive -
✔✔Posterolateral corner injury and posterior cruciate ligament injury
,Reason: This patient tests positive with the posterior sag sign and the external
rotation recurvatum test, and the posterior sag sign tests for the integrity of the
posterior cruciate ligament whereas the external rotation recurvatum test is
looking at the posterior cruciate ligament and the posterolateral corner of the
kene. (Magee 2014)
Finding consistent with posterolateral corner injury? - ✔✔Sharp pain in the
knee during terminal stance and push off during gait
Reason: DeLeo et. al discuss the finding of sharp pain during terminal stance
and push off as being a finding common to posterolateral corner injuries.
(DeLeo 2003)
Ottawa Knee Rules - ✔✔Age 55 or older
OR
Isolated tenderness of the patella
No bone tenderness of knee other than patella
OR
, Tenderness of the head of the fibula
OR
Cannot flex to 90 degrees
OR
Unable to bear weight both immediately and in the emergency room
department for 4 steps
activity is most likely to be limited in the long term after a posterior cruciate
ligament injury - ✔✔Reason: In those who had posterior cruciate ligament tears,
high speed running was the activity most affected in the long term as reported by
Logerstedt et al in the APTA's clinical practice guidelines on knee ligament
sprains. (Logerstedt 2 2010)
ruling in a posterior cruciate ligament tear - ✔✔Reason: The posterior drawer
test has a specificity of 99% as discussed by Logerstedt et al in the clinical practice
guidelines for ligament sprains from the orthopaedic section of the APTA.
However, the posterior sag sign has a specificity of 100%.
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