A sprain in the knee area may be just a general soft tissue injury, a condition that can usually recover spontaneously. However, a knee sprain may cause meniscal damage or cruciate ligament rupture, or even avulsion fracture, etc. This condition is difficult to recover automatically. If the local pain and swelling are not very obvious, then it is a minor soft tissue injury and can recover naturally with rest and recuperation. However, if the local pain and swelling are significant, it is important to pay attention to the damage to the meniscus or the cruciate ligament and other important structures, and it is necessary to go to the hospital in time for examination. For more serious meniscal injuries or cruciate ligament ruptures, surgical treatment such as arthroscopy may be considered for recovery.