BASIC ULTRASOUND OF THE KNEE

ByMohamed Hassan Youssef MD

Arthritis/Rehab&Pain ClinicBoard certified of ABPM&R

Knee Joint

Knee Bones

• Distal end of the Fumer

• Proximal end of the Tibia

• Head of the Fibula

• Patella

Knee Bones

Knee Bones

Movement of Patella Upwardduring Knee Flexion

Knee Bones

Common Knee Ligaments

• Ant Cruciate Ligament• Post Cruciate Ligament• Medial Collateral Ligament• Lateral Collateral Ligament• Arcuate Ligament• Coronary Ligament

Knee Ligaments

Knee Ligaments

Knee Ligaments

Knee Ligaments

Knee Ligaments

Knee Menisci

• Medial Meniscus

• Lateral Meniscus

Knee Menisci

Knee Menisci

Knee Menisci

Knee Bursae

Suprapatellar

Prepatellar

Infrapatellar

Pes Anserinus

Knee Bursae

SemimembraneususBursa

Knee Bursae

US probes commonly used in MSK

• Linear

• Curved Linear

Linear probe

Curved Linear probe

Relation of the needle to the US Probe

• Long AxisNeedle can be seen as a metal line approaching The target.• Short AxisNeedle appear as a metal bright point in the target.

Long Axis

Short Axis

Positioning of the Knee duringUS guided needle injection

• 1-put a roll under the knee to keep it in 25°-35° of flexion.• 2-Use a linear Probe.

US probe position in Knee injection

US of Knee

• Move the linear probe in midline of the thighthigh 10 cm above upper edge of patella.

• Move the probe downward till the loweredge of the probe touch theUpper edge of the patella to elaborate the Quadriceps Tendon

Quadriceps Tendon

Linear probe horizontal

Suprapatellar Bursa

Infrapatellar ligament

Pes Anserine Bursa

References

• http://www.ultrasoundpaedia.com/normal-knee/

• Tom Clark Ultrasound course

• Ultrasound guided Musculoskeletal Procedures

Knee US( Lateral)

Knee US (Medial)

Popliteal Fossa

US probe positioning during knee injection

Injection of Suprapatellar Bursa

Injection of the Knee