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knee joint ultrasound

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by

Man-seok Bae

on 28 March 2014

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Transcript of knee joint ultrasound

Knee joint Ultrasound
Anatomy
Patella
Femur
Tibia
Fibula
Fabella
MCL
LCL
ACL
PCL
QF
Sartorius
Gracilis
TFL
SM
ST
Biceps femoris
Popliteus
GCN
Femoral N.
Saphenous N.
Sciatic N.
Tibial N.
Peroneal N.
LM
MM
Suprapatellar bursa
Prepatellar bursa
Infrapatellar bursa
Pes anserine bursa
SM bursa
Plica
Cortical bone
Landmark: reproducibility
Hyperechoic line
Acoustic shadowing

Critical angle shadowing
Reverberation artifact
Mirror image artifact

Cortical irregularity
Cortical discontinuity
Cortical erosion
Osteophyte
Patellar plica
Suprapatellar
Infrapatellar
Medial -70%
Lateral-1%
Tendon and ligament

Fibrillar pattern at Long axis view

Swelling(hypoechoic enlargemtn)
Loss of fibrillar pattern
Discontinuity of fibrillar pattern
Intratendinous hyperechogenicity

Tendinosis, Sprain
Tendon tear, ligament tear
Calcific tendinopathy
avulsion fracture
Meniscus
Fibrous cartilage
Hyperechogenicity

Tear - hypoechoic line
Articular cartilage
Hyaline cartilage
Hypoechoic structure

Thinning
Thickening

Degenerative OA
CPPD
Nerve
Neural bundle, epineurium, perineurium

Honeycomb appearance at short axis view
Fascicular pattern at Long axis view

Knotch sign

USG nerve block
Pathology
OA, RA
Joint effusion >2mm
Synovial proliferation
OCD
Tendon tear, tendinosis, Sprain

Patellar fracture
Sinding Larsen-Johansson's disease
Osgood-Schlatter's disease
Jumper's knee

Meniscus tear
Meniscal cyst
Meniscus subluxation
Iliotibial band syndrome
Discoid meniscus

Backer's cyst
Full transcript