Signs of a Knee Sprain
When it comes to a knee sprain, there are several signs that can help identify the injury, regardless of which ligament is affected. These signs include experiencing intense pain, swift swelling, limited range of motion, and a sense of instability while bearing weight. However, there are also specific signs that are unique to each ligament. For instance, a distinct indicator of an ACL injury is the sensation of hearing or feeling a popping sound in the knee. On the other hand, an LCL injury may result in numbness or weakness in the foot, or even the joint becoming locked while in motion.
Diagnosis: How Doctors Determine a Knee Sprain
When it comes to diagnosing knee sprains, doctors primarily rely on a thorough physical examination. During this examination, they carefully assess for any signs of swelling and tenderness by comparing the injured knee with the unaffected one. Additionally, doctors evaluate the range of motion to gauge the severity of the injury.
In some cases, diagnostic imaging tests such as X-rays may be necessary to rule out any underlying fractures. However, to gain a more comprehensive understanding of the extent of the injury, doctors may recommend an MRI scan. This imaging technique allows them to assess the specific structures within the knee.
Moreover, an ultrasound may be employed to evaluate the surrounding tissues and provide additional insights into the overall condition of the knee.