S80-S89: Injuries to the knee and lower leg

S86: Injury of muscle and tendon at lower leg level

Injury of muscle and tendon at the lower leg level is a group of health conditions typically resulting from trauma or overuse. These injuries can occur in anyone but are more common in athletes and people participating in physical activities. Injuries in this group often occur due to a sudden force or strain placed on the leg muscles or tendons such as during jumping, running, or other vigorous activities. Symptoms usually include pain, swelling, and difficulty moving the leg. As the injury progresses, it may cause a decrease in strength or functionality of the leg. If not treated properly, these injuries can become chronic, causing long-term pain and disability. It's important to note that while these conditions can affect any of the muscles or tendons in the lower leg, the calf muscles and Achilles tendon are particularly susceptible due to their function and structure.