Why does hemiplegic limb pain occur?

Hemiplegia, also known as hemiplegia, refers to the movement disorder of the upper and lower limbs, facial muscles and tongue muscles on one side, and it is a common symptom of acute cerebrovascular disease. Although patients with mild hemiplegia can still move, they often walk with their upper limbs flexed and their lower limbs straightened, and their paralyzed lower limbs take one step and make half a circle. In severe cases, they are often bedridden and incapacitated.

Why do acute cerebrovascular patients have hemiplegia? This is mainly due to damage to the motor centers of the cerebral hemisphere cortex. From the perspective of the division of labor in the human cerebral hemisphere, the right cerebral hemisphere manages the movement of the left limb through the motor center; The left cerebral hemisphere manages the movement of the right limb through motor nerves.

Lesions on either side can lead to contralateral hemiplegia. The most susceptible site for lesions in both cerebral hemispheres is the internal capsule. Because it is mainly composed of a small blood vessel called the lenticular artery, which is vertically separated from the middle cerebral artery, with a small diameter and high pressure, it is easy to rupture and bleed when it is impacted by the blood flow.

Therefore, it is also called a hemorrhagic artery. It is a common site for cerebral hemorrhage, but when blood pressure drops and blood flow slows, thrombosis is prone to occur. The nerve fibers in the internal capsule area are closely arranged, and the ascending and descending fibers pass through it, and once damaged, contralateral hemiplegia, hemisensory impairment and hemianopia are produced, which is the so-called "three deviation signs".

After cerebrovascular disease enters the recovery period, if the first exercise is not carried out in time, the hemiplegic limb will have contractures, stiffness, deformity, and even cause severe pain, which will bring great pain to the patient.

The most common causes of pain in a paralyzed limb are as follows:

After the shoulder joint subluxation is completely paralyzed, the muscles around the shoulder joint are relaxed, and under the influence of gravity, the shoulder joint is often stretched and subluxation occurs.

Shoulder-hand syndrome often occurs 1 to 3 months after cerebrovascular disease, and is a common cause of shoulder pain and hand pain after cerebrovascular disease.

Periarthritis of the shoulder usually occurs a few months after hemiplegia, and the initial clinical manifestations are pain during the abduction and elevation of the upper arm, which gradually worsens, and the patient has persistent severe pain in the upper arm and hand, which often makes it difficult for the patient to sleep, and cry hopelessly, and beg the doctor or others not to move his shoulder and arm. In addition, severe flexion and adduction of the toes, atrophy of the flexor muscles of the elbow and knee joints, and shortening of the Achilles tendon, often cause pain in the affected limb when it touches the ground or is moved.

Problem analysis: the occurrence of painful urination and muscle soreness on one side of the limb, this situation is a clear positioning of the neurology, that is, the occurrence of nerve damage on the opposite side of the brain, the most common occurrence of this situation is the possibility of damage to the internal capsule, which may be caused by vascular damage such as ischemia and hemorrhage, tumors, inflammation, etc

It is recommended to go to the neurology department of the hospital as soon as possible for cranial CT and MRI examination to confirm the diagnosis**.