Lower Extremity Exam Flashcards
seated leg raise evaluates
sciatica nerve irritation or lumbar nerve root irritation
Seated straight leg raise test
patient is seated
have them passively extend the knee
what does passive extension of the knee do?
causes tensions the sciatic nerve and lumbar nerve roots
Seated straight leg raise test positive test
-patient not tolerating full knee extension on the involved side
Typically demonstrated by the patient reflexively leaning back, shown as the flip sign
or they may just complain of reproduction or an increase in radicular pain
Reproduction of lumbar pain or radicular pain with contralateral knee extension is also considered a positive test.
flip sign
patient reflexively leaning back during seated straight leg raise
straight leg raise evaluates
sciatic nerve irritation or lumbar nerve root irritation
straight leg raise test
patients is supine passively flex the hip while maintaining knee extension.
If radicular symptoms are produced, slowly lower the leg until pain is relieved and then dorsiflex the foot
straight leg raise positive test
Reproduction of radicular pain with dorsiflexion
what is not considered a positive straight leg raise
Tightness / discomfort in the buttocks or hamstring
radicular pain in contralateral leg during straight leg raise
highly specific for lumbar nerve root entrapment/irritation
Passive flexion of the hip while the knee is maintained in full extension tenses
the sciatic nerve and lumbar nerve roots
slump test steps
patient is seated, slumps, tuck chin, pressed on occipital bone, extend knee , and then passively extend the knee
what dos the pelvic spring test assess
pelvic instability and fracture
steps of the FabER
have the patient be supine and create a figure four
abduction, external rotation and apply pressure
what does FAbER test assess
SI Joint dysfunction
assesses adductors
Antalgic gait
Limp adopted to avoid pain on weight-bearing structures, characterized by a very short stance phase
Patient remains on painful leg for as short a time as possible
Lower Extremity Palpation anterior landmarks
iliac crest
anterior superior iliac spine
pubic symphysis
Lower Extremity Palpation posterior lateral landmarks
grater trocater
ischial tuberosity
Hip Extension
best if prone or on one side
extend thigh or patient is standing
passive abduction and adduction
grasp ankle and move leg either medically across body or extend out
you are moving the patients leg
lower extremity inspection
inspect the skin and subcutaneous tissue over the muscles and joints for color, skin folds swelling and masses
where else should you inspect the color during lower extremity inspection
the nails
palpation landmarks of the knee
patella patelar ligament medial and lateral epicondyles of the tibia medial and lateral condyles of tibia medial and lateral joint line tibial tuberosity
palpation of the popliteal fossa
look for pulse, cyst and aneurysm
knee should be flexed
ottowa knee rules level 1 criteria
age over 55 isolated tenderness at the patella tenderness at the fibula head unable to flex the knee 90 degrees able to bear weight immediately after and in the ER for 4 steps limping counts
need one of these to be positive and there must be an appropriate MOI
if we have a positive Ottawa knee what else do we need in order to appropriately give an X-ray
appropriate MOI
what is a baker’s cyst
a synovial fluid cyst located in the popliteal space
Palpable as fluctuant fullness
May be painful
may leak fluid into the calk causing calf swelling
how is a baker’s cyst best palpated
with the knee extended
what is a popliteal artery aneurysm usually due to
atherosclerotic vascular disease
popliteal artery aneurysm general population
more likely to occur in males than females
and with those 65 years old and older
what is the most common aneurysm of the peripheral vascular system
popliteal artery aneurysm
a popliteal artery aneurysm is _____ more than 50 % of the time
bilateral
how to diagnosis popliteal artery aneurysm
there is a pulsatile swelling behind the knee
it is best to palpate a popliteal artery aneurysm when
the knee is extended
bulge sign evaluates for
a small to significant knee joint effusion
how to look for bulge sign
Place your left hand above the patella and apply pressure on the suprapatellar pouch, “milking” the fluid downward. Stroke downward on the medial aspect of the knee.
then tap the knee just behind the lateral margin of the patella with the right hand
positive bulge sign
A fluid wave or bulge felt along the medial aspect of the knee is indicative of a knee effusion
ballottement of patella evaluates
large effusion of the knee joint
ballottement of patella test
Compress the suprapatellar pouch and apply downward pressure to the patella by tapping it
ballottement of patella positive test
A sensation that the patella is boggy like it is floating on a cushion of fluid is indicative of a knee joint effusion
is MCL or LCL more common
and in which sex is it more common
MCL and men
valgus
medial/ inward rotation
varus
bowed out
how do we rate valgus and varus stress test
grade 1 2 and 3
MCL mechanism of injury
forced direction to there lateral aspect of the knee
cause injury to the medical collateral ligament
MCL injury is
how do was test for this
instability caused by medial joint space
valgus stress test
valgus test assess
medial collateral ligament stability
valgus stress test
patient is supine
one hand on lateral aspect of knee and one medial distal tibia
apply abduction stress to the knee
repeat the test with the knee flexed to 30 degrees
Opening of the medial joint line at 0° during valgus stress test
is indicative of complete MCL tear and dependent upon the degree of knee laxity also indicative of possible ACL/PCL involvement
Opening of the medial joint line at 30° during valgus stress test
Opening of the medial joint line at 30° is indicative of partial to complete MCL tear
unhappy triad
ACL, MCL, Medial meniscal tear
LCL injury
Force directed to the medial aspect of the knee (Rare)
Injury to the lateral collateral ligament
LCL injury causes
and clinical evaluation
Instability caused by abnormal opening of lateral joint space
use varus stress test