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.
Lateral Knee Pain. Lateral knee pain is pain that occurs on the outer side of the knee. It is the least common place to experience pain and there are a variety of causes. It may come on gradually over time or may develop suddenly after an injury.As a result, the symptoms are varied too.hat is it: Damage to some or all of the fibres of the Lateral Collateral Ligament on the outer side of the knee. Symptoms: Outer knee pain, swelling, bruising, instability, stiffness. Aggravating Activities: Bending the leg, walking, stairs, sports.