Suprapatellar Bursa

Suprapatellar
Bursa
Normal
Abnormal
Femoral Articular Cartilage
 Fibrocartilage or hyaline
cartilage - porous
 Connects bone to joint
 Covers condyles of femoral
articular surface
 cartilage is thicker - 3mm at
trochlear surface
 Hypoechoic, smooth, closely
adherent to bone
 In contact with meniscus
Articular
Cartilage
Crisp bone surface !
Lateral Knee
Lateral Collateral Ligament
 Lateral Meniscus
 Biceps Femoris
 Iliotibial Band

Lateral Collateral Ligament
fibulocollateral ligament
 provides lateral support to the knee joint
 rounded and cord-like
 extends from the lateral epicondyle to the
lateral surface fibula
 Popliteus tendon passes between the LCL
and the lateral meniscus
 fan ventral from fibula attachment
 superior to biceps femoris

Lateral Knee

Lateral Collateral Ligament ( LCL )
 Fibular-collateral ligament



Biceps Femoris Tendon
Iliotibial band
Lateral meniscus
Lateral Collateral Ligament
Fibulo-collateral Ligament
 Provides lateral support to the knee joint
 rounded and cord-like
 Extends from the lateral epicondyle to the
lateral surface fibula
 Popliteus tendon passes between the LCL
and the lateral meniscus
 Fan ventral from fibula attachment
 superior to biceps femoris

LCL
LCL will most often appears wavy
LCL

Frequently appears “wavy”
 full extension


30⁰ flexion
varied degree of echogenicity
Iliotibial Band




Broad, strong tendon.
Inserts on Gerdy’s tubercle of the
tibia
Bright, fibrillar band between the
patellar tendon and anterior to the
LCL
Burning sensation anterior knee
when inflamed.
Lateral Meniscus

Same appearance as
medial meniscus

Close proximity to the
LCL

Between the lateral
condyle of the femur
and the tibial articular
surface
Common
Peroneal Nerve
 Smaller and lateral branch of the
sciatic nerve
 Follows medial to tendon of the
Biceps femoris
Courses superficial to plantaris
and lateral head of the
gastrocnemius
 posterior to the head of the femur
Injured with trauma to lateral
knee complex
FRX of fibula
 produces drop foot
FIB HEAD
SAX
FIB HEAD
LAX
Biceps Femoris
( BF )

1/3 of muscles comprising the hamstrings ( BF,
Semimembranosus, Semitendinosus )
 muscle group responsible for extension of the thigh and
flexion of the lower leg





Serves as protection for the sciatic nerve
BF ( “bi” two-headed) combine and insert on the
head of the fibula with the LCL
Forms letter”V” with the LCL at their common
fibular insertion.
Easily palpated with thigh flexion posterior-lateral
Found posterior and lateral to the LCL
Biceps
Femoris
Medial Knee



Medial Collateral Ligament
Medial Meniscus
Pes Anserine
Medial Collateral Ligament (MCL)
Tibial Collateral Ligament





Long, tri-laminar,
broad ligament.
Hypoechoic tissue
between the band-like
layers
Superior attachment is
the Medial epicondyle of
the femur
Inferior insertion is 4-6
cm below the knee joint
provides medial support
Scan breadth of MCL