Knee Special Tests

Question 1

what is the anterior drawer test for

Answer 1

test for anterior instability of the knee

(+) = tibia moves forward more then 6mm on femur
if only the ACL is torn, the test would be (-) b/c the other structures would limit movement

Question 2

what is the test that is the best indicator for injury to ACL espec posterolateral band

Answer 2

Lachman’s

pt supine, affected leg beside examiner
examiner holds pt;s knee between full ext and 30 flexion
pts distal lateral femur is stabilized w one of examiners hands, other hand proximal medial tibia that is laterally rotated, try to translate tibia anteriorly

(+) = mushy or soft end feel

Question 3

if the step is lost during posterior sag sign test what does it indicate

Answer 3

torn PCL

Question 4

valgus stress tests for what

Answer 4

medial instability

Question 5

tests for meniscus

Answer 5

mcmurrays
bounce home
apleys compression

Question 6

test for assessing the integrity of the collateral knee ligaments

Answer 6

apleys distraction

pt prone, knee flexed to 90
stabilize pts leg by placing knee one pts posterior thigh
examiner grasps leg proximal to ankle and a traction is applied to the tibia towards the ceiling - internal and external rotation to tibia is performed

(+) = medial knee pain indicates MCL damage and lateral knee pain = LCL damage

Question 7

pt prone
knee flexed to 90
compress flexed knee joint and menisci by pushing the pts foot and tibia down into the table
followed by internal and external rotation of tibia = what test

Answer 7

apleys compression test

(+) pain on medial aspect of joint is positive for medial meniscus damage , pain on lateral side means lateral injury

Question 8

what test is for dislocation of patella or excessive lateral tracking

Answer 8

patella apprehension test (fairbanks)