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.
Blood clots can form in the legs due to a lack of motion. Inactivity for a long period of time can cause a sluggish or slow blood flow, notes the National Heart Lung and Blood Institute. Prolonged sitting, paralysis and recovering in bed after surgery cause the legs to remain still.