Hello, Thanks for posting your query. Hyperextension is the movement or extension of joints, tendons, or muscles beyond the normal limit or range of motion. When this happens, it may cause an injury. Depending on the extremeness of the movement, a joint or muscle may be temporarily injured and improve with time and physical therapy, or it may be a permanent injury. Most cases require only acute treatment such as cold compresses, rest, and brace support. In some cases, the over-extension may result in permanent injury that can only be corrected with surgery. If the injury was moderate to severe, a medical professional will likely order imaging tests like X-rays or an MRI to assess the damage to the affected area. A patient might be referred to a physical therapist or an orthopedic specialist. Treatment depends upon the severity of the injury. Hope I have answered your query. Wishing you good health. Regards.