S80-S89: Injuries to the knee and lower leg

S83: Dislocation, sprain and strain of joints and ligaments of knee

The group of conditions denoted by: Dislocation, sprain and strain of joints and ligaments of the knee encompasses injuries that impact the proper functioning of the knee. These conditions can occur due to a multitude of reasons, including sudden twisting, direct impact, or awkward landing after a jump, typically seen in sporting events or from a fall. The dislocation refers to the knee joint being forced out of its normal position, while a sprain involves the stretching or tearing of the ligaments that support the knee. A strain, on the other hand, affects the muscles or tendons around the knee. Common symptoms for these conditions include pain, swelling, difficulty moving the knee, and possible deformities in severe cases. These conditions can vary in severity ranging from mild discomfort to a complete inability to bear weight on the affected leg. This group of conditions mainly affects the musculoskeletal system.