Knee special tests Flashcards
What is the purpose of Anterior drawer test
instability of the ACL
How is the anterior drawer test performed
patient sat or laying down knee 90 degree flexion sit on foot of bent knee hands placed either side of patella tiba drawn forwards feeling for anterior translation
what makes a positive anterior drawer test?
increased anterior exertion of medial tibial condyle
What is the purpose of the Lachmans test
Instability of ACL
How is the Lachmans test performed
patient on back rehab placed bent knee under clients knee one hand fixed ontop of the patella other hand under top of the calf rehab drawers calf upwards
what makes a positive lachmans test
increased anterior exertion of tibia on femur
change in end feel indicates significant injury
what are the two tests used for ACL
Lachmans
Anterior drawer
Name the 8 tests for the knee
anterior drawer lachmans posterior drawer posterior sag McMurrays Thessalys Valgus stress test Varus stress test
What is the purpose of the posterior drawer test
instability of PCL
How is the posterior drawer test performed
patient sat or laying down knee 90 degree flexion sit on foot of bent knee hands placed either side of patella tiba drawn backwards feeling for posterior translation
what makes a positive Posterior drawer test
increased posterior exertion of tibia on femur
Whats the purpose of the posterior sag
detect PCL instability
How is the posterior sag test performed
patient on back
knee 90degress flexion and hip 90 degree flexion looking for posterior translation
what makes a positive posterior sag test
posterior translation
What is the purpose of the McMurrays test
determine medial / lateral meniscal injury
how is the McMurrays test performed for medial meniscal injury
patient on back
one hand on top of patella holding it between thumb and finger applying varus force
other hand holding heel in heel of hand
slowly extend the knee while laterally rotating
How is the McMurrays test performed for lateral meniscal injury
patient on back
one hand on top of patella holding it between thumb and finger applying valgus force
other hand holding heel in heel of hand
slowly extend the knee while medially rotating
What determines a positive McMurrays test?
reproduction of symptoms
pain
what is the purpose of Thessalys test
detect meniscal injury
How is the thessalys test performed
standing on one leg
bend knee 20 degree flexion
rotate femur across body and back several times
external and internal rotation repeated
what makes a positive Thessalys test?
pain
apprehension
locking
what is the purpose of the Varus stress test?
pain / laxity LCL injury
How is the Varus stress test performed
leg lifted and rests between rehabbers hip and arm
one hand hold lateral side of leg below the knee
other hand applied pressure on the medial side forcing the ligament to open up
what makes a positive Varus stress test?
knee pain =lcl injury
normal end feel/ resistance to varus stress = intact ligament
