These articles have quotations from film adaptations of J.R.R. Tolkien's novel The Lord of the Rings and related works: 1  The Lord of the Rings.  J.R.R. Tolkien's The Lord of the Rings (1978)
This causes a twisting on the tibia and changes its relationship to your kneecap. This can cause tracking problems as well. If your quadriceps or hamstring muscles are too tight, they also will affect the mechanics of the knee and lead to compensation patterns that cause pain.
A trick knee in your dog is caused by a luxating patella. Patellas (kneecaps) can luxate (move out of place) towards the dogÂ´s body (medially) or away (laterally). The kneecap normally rides in a groove in the femur and works so well that most owners do not even realize that it is there.