Knee tests

Question 1

Mc murrays

Answer 1

assesses meniscal tears in knee + helpf indentify lateral and medial
Postive test - Pain, snap or clicking sound

Question 2

SAG test - posterior sag sign

Answer 2

assesses PCL injuries
Postive test - tibia visably drops indicates PCL rupture or PCL instability

Question 3

Posterior drawer test

Answer 3

assesses PCL ligament injuries
Postive test indicates tibia moves excessively posteriorly or lack of firm end-feel
suggests PCL tear or insuffiency

Question 4

Why do posterior drawer test over SAG test

Answer 4

• Grade laxity of PCL muscle
  -rule out false postive of SAG sign

Question 5

Anterior drawer test

Answer 5

Assesses ACL ligament injuries
Positive sign - when excessive forward movement of tibia or lack of firm end feel

Question 6

Lachmans

Answer 6

Tests ACL for injuries
Positive sign - when excessive movement or lack of firm end feel

Question 7

Why is lachmans test preferred over anterior drawer test

Answer 7

Hamstrings more relaxed reducing potential for muscular interference

Question 8

Valgus stress test

Answer 8

identify MCL sprains or tears
Positive test - pain or excessive laxity
LATERAL FORCE

Question 9

Varus stress test

Answer 9

Identifies LCL sprain or tears
Postitive tets - pain or laxity
MEDIAL FORCE

Question 10

Patella tap

Answer 10

asseses joint effusion in knee
positive test - if patella feels like floating or bounces back up when tapped