acute soft tissue injury- knee Flashcards
second degree lig injury
joint opens on stress
definite palpable endpoint
first degree ligament classification
local tenderness
no instability on stress
third degree ligament injury
joint opens on stress
no endpoint
what is the most common lateral injury
MCL injury
how does MCL injury happy
direct blow to lateral aspect of knee
valgus stress
physical exam with MCL injury
plain on valgus
laxity of medial structures
Tx of 3 grades for LCL and MCL
1- symptoms- stay off 2 weeks
2- knee brace- 4 weeks off
3- nonoperative brace or surgery- 6 weeks off
pe of LCL injury
pain on vargus
lateral laxity
what do you have to check for with LCL injury
peroneal nerve dysfunction (runs under biceps femoris and wraps around head of fibula)
ACL mech of injury
rapid deceleration, hyperextension with rotation on a planted foot
gender in ACL tears
m>f in tear risk, but F>m x4 of rupture risk
hx of ACL injury
audible pop followed by immediate pain and swelling after injury
PE of ACL injury
hemarthrosis (bleeding into joint) and limited ROM
tests to exam ACL
Lachman (hard to do but most sensitive)
anterior drawer
pivot shift tests
tx of acl injury depends on the
pathogenesis
ACl tear–>instability–>stress on secondary restrainign structures–>meniscal tears–>arthritis
osteoarthritis risk with ACL tear
surgery does not decrease the risk; remains high after the tear