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 Lateral head of gastrocnemius tendon Semimembranosus 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