A positive floating patella test is a serious condition, indicating that the fluid or blood in the knee joint has reached at least 50 ml. This may be due to damage to the meniscus, cruciate ligament and joint capsule, so it is best to go to a hospital orthopedic department for an MRI to look at the damage within the knee joint. If the injury is severe, such as a severe tear of the meniscus or significant damage to the cruciate ligament, it may be necessary to rest the knee with braking and to perform a knee puncture to remove some of the blood and fluid before braking, which will relieve the pressure on the joint capsule, effectively reducing symptoms and promoting recovery of the knee. If the injury is severe, surgical intervention may be required for meniscal repair or cruciate ligament replacement.