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.
There are various reasons why you can experience knee clicking. Below are some of the most common causes: 1. Unnecessary tissue around the knee: After a serious injury to the knee, if it is not treated or if it does not heal properly, you can develop unnecessary tissue or plica around the knee.he knees can become inflamed and align differently, which will cause a clicking sound. 5. ACL tear and MCL tear: Both tears will cause the knee to click; the tears can also lead to chronic pain, knee stiffness, and tenderness.