INTRODUCTION A joint, also called an articulation, is any place where adjacent bones or bone and cartilage come together (articulate with each other) to form a connection. Joints are classified both structurally and functionally. Joints are divided into functional and structural categories. Joint structural classifications consider two factors: either the adjacent bones articulate within a fluid- filled area known as a joint cavity, or the adjacent bones are tightly linked to each other by cartilage or fibrous connective tissue. The 3 types of structural joints are fibrous (its examples is the sutures of the skull, the syndesmoses between the radius and ulna and the gomphoses between the teeth and jawbone), cartilaginous (its examples are the synchondroses between the ribs and the sternum, the symphyses between the public bones and intervertebral discs) and lastly, the synovial ( examples are the ball and socket joints of the shoulder and hip, the hinge joints of the elbow and knee and the pivot joints of the neck and forearms (OpenStax, 2018) while the degree of mobility between the bones is described by functional classifications, which range from immovable to slightly mobile to joints that can move freely. The 3 types of functional joints are the synarthrosis (where the suture of the skull is located), amphiarthrosis (examples are the syndesmoses of the forearm and legs, the intervertebral disc and the costochondral joints of the ribs) and lastly, the diarthrosis which can be classified into six types based on the shape of the articulating surfaces and the types of movements they allow: plane, hinge, pivot, condyloid, saddle, and ball-and-socket (OpenStax, 2018). As we have described joints and its classification, we should be diving deeper by selecting one of the types of structural joints to discuss which is the knee joint from the synovial joint. Knee Joint is one of the most important and complex joints in the body, it allows us to bend and straighten our legs as well as support our body weights. The largest joint in the body is the knee joint. There are three articulations in all. Situated between the patella and the distal femur is the femoropatellar joint. Between the medial and lateral condyles of the tibia and the medial and lateral condyles of the femur are the medial and lateral tibiofemoral joints as well as the lateral tibiofemoral joint. A single articular capsule encloses each of these articulations. The leg can be extended and flexed thanks to the hinge joint function of the knee. The femur on the tibia produces this action by both rolling and gliding. Furthermore, while the knee is flexed, the leg can rotate to some extent, but not when it is stretched. Although the knee is well-designed to support weight when in an extended posture, it is susceptible to damage from twisting, hyperextension, or impacts to the medial or lateral side of the joint, especially when bearing weight (OpenStax, 2018). The patella moves vertically inside a groove on the distal femur at the femoropatellar joint. The patella