Assessment of the Anterior Cruciate Ligament is classically done by doing the Anterior Drawer Test but an alternative Lachman test has also been advocated.
USMLE may ask us about these because of the fairly common ACL injury.
The major difference between these is the degree of knee flexion (90 degrees in the drawer sign and 20-30 degrees in Lachman)
The best way to remember these to look at these two great YouTube Videos
USMLE may ask us about these because of the fairly common ACL injury.
The major difference between these is the degree of knee flexion (90 degrees in the drawer sign and 20-30 degrees in Lachman)
The best way to remember these to look at these two great YouTube Videos