Derefield Leg Check

Question 1

which leg check is more common?

Answer 1

negative

Question 2

what listings can you get from a positive derefield leg check?

Answer 2

PI or AS ilium

Question 3

what listeings can you get from a negative derefield leg check?

Answer 3

IN or EX ilium

A-L, A-R, P-r, P-L

Question 4

which side is ankle inversion typically on?

Answer 4

side of shortness

if not, ask history (maybe sprained ankle

Question 5

prone leg check procedure

Answer 5

1. thumbs on soles just below heels, index fingers posterior and middle finger anteiror to lateral malleolus
2. pull thumbs and elbows laterally to remove any inversion/eversion
3. dorsiflex ankles until slight resistance is met, flare toes laterally 15 degrees
4. apply headward pressure with thumbs
5. note which side is short

Question 6

knee flex leg check procedure

Answer 6

1. middle finger along metatarso-phalangeal junction. index finger straight ahead, thumb up and out of the way
2. dorsiflex foot to tension before bringing legs up
3. at 40 degrees, put thumbs on soles of feet, allow infex fingers to drift to welt of shoe, continue to 90 degrees
4. remove inversion/eversion
5. note which leg is shorter

Question 7

when is the leg check negative?

Answer 7

reactive leg is 1/2 inch short prone

in knee flexed position, leg either stays 1/2 inch short or shortens more than 1/2 inch

Question 8

when is the leg check positive?

Answer 8

reactive leg is 1/2 inch short prone

in knee flexed position, leg lengthens, becomes even or crosses over and becomes long

Question 9

what happens if the legs are even prone and one goes long in knee flexed position?

Answer 9

positive leg check on side of leg in knee flexed position