Transcript The Knee Joint

What is the knee joint?
• The knee joint is made
up of the articulation
of the ____________
__________________.
The femur however
does not come in
contact with the
fibula, but the fibula
interacts with the
tibia.
Type of Joint
• The knee joint was first thought to be a
____________________because it was
believed to be responsible for only flexion
and extension
• However, the knee can rotate the leg
medially and laterally to a small degree
• Therefore, the knee is considered also to be
a ___________________________joint
which is a type of synovial joint
The Knee Joint – Anterior
Quadriceps
tendon
Patella
Medial (Tibial) collateral
ligament
Patellar ligament
Fibula
Tibial
tuberosity
Tibia
The Knee Joint Anterior (deep)
Femur
Posterior cruciate ligament
Lateral (Fibular) collateral
ligament removed
Medial (Tibial) collateral ligament
removed
Lateral Condyle
Medial Condyle
Anterior cruciate ligament
Lateral Meniscus
Medial Meniscus
Tibial Tuberosity
Fibula
Tibia
The Knee Joint – Posterior
Femur
Adductor magnus
tendon
Medial head of gastrocnemius
tendon
Semimembranosus
tendon
Lateral head of gastrocnemius
tendon
Oblique popliteal ligament
Medial (Tibial)
collateral ligament
Lateral (Fibular) collateral
ligament
Fibular head
Fibula
Tibia
The Knee Joint – Posterior (deep)
Femur
Anterior cruciate
ligament
Posterior meniscofemoral ligament
Medial meniscus
Medial (Tibial) collateral
ligament
Popliteal tendon
Lateral meniscus
Posterior cruciate
Lateral (Fibular)
collateral ligament
Fibula
Tibia
Meniscus
• The end of the femur is covered with articulating cartilage which
rests at the end of the tibia
• There lie two thick fibrocartilage articular discs called the menisci
(meniscus-singular):
• ________________________________________________________
• They sit on the tibial condyles which are located on either side of the
intercondylar eminence
Intrinsic Ligaments
The knee joint has several ligaments which
help attach the femur and tibia together
The two intrinsic ligaments which cross each
other are called the _____________ligaments
The _________ (anterior cruciate ligament)
helps stop anterior movement of the tibia and
the _____ (posterior cruciate ligament) helps
to prevent posterior movement
Extrinsic Ligaments
The knee joint is held together medially
by the medial collateral ligament (_____)
and laterally by the lateral collateral
ligament (_____)
These ligaments provide medial and
lateral stability of the knee
MRI- ACL Tear
Muscle Groups