There are a number of potential causes of Hornerâs syndrome, each affecting a different place in the sympathetic chain: 1  First order neuron lesion: brainstem stroke. 2  Second order neuron lesion: apical lung tumor, neck trauma, other. 3  Third order neuron lesion: orbital trauma or inflammation, carotid dissection, other.
In very severe cases where the patella keeps dislocating, the attachment of the patellar tendon may also have to be moved. Once the surgery heals, the patella will track up and down in the patellar groove, reducing pressure on the articular cartilage. 1  Knee Pain: Symptoms, Causes, and Treatments.
If arthritis is causing your clicking you may also notice stiffness in the joint or inflammation in the area or in other joints. You may also notice joint erythema or bursitis. An ACL tear and MCL tear. An ACL tear can cause the knee to click as the leg begins to sit in a different location than it normally would.An MCL tear can cause a similar situation. Both injuries cause chronic pain and will cause the knee to be stiff and tender.his is often caused by an injury or stress on the tibia, or the lower bone in your leg which protects our kneecap. If any of these bones come out of line, the knee may click when it is bent. You may also suffer runner's knee if the IT band which stabilizes the kneecap or your quad muscles are overworked.