Knee Locking or Catching
Locking of the knee usually happens when there is a torn meniscus or a loose body in the knee. The loose structure can be as tiny as a grain of sand or as giant as a coin. A piece of cartilage after chipping off from the end of the tibia or femur becomes the loose body that floats freely. As the loose body floats freely around the knee, it might immediately restrict normal motion and can also result in immense pain. A torn piece of meniscus can also do the same harm to the knee and cause significant pain. The patient needs knee arthroscopy to treat the condition of locking or catching, if there is the severity of the symptoms.