The neck is tight! Teachers who look up and write on the blackboard are prone to shoulder and neck diseases.

There is a joke in the life insurance industry that the insurance premium of teachers is the lowest in all industries, because teachers will hardly have any occupational injuries when teaching in class. However, a high school Chinese teacher revealed that he wrote down the key points on the blackboard for forty or fifty minutes in a row, and there was almost no rest time for three consecutive classes in the morning. After returning home, he found that his arms and neck were sore, numb and even weak. In this regard, the rehabilitation doctor pointed out that teachers holding their arms high and writing on the blackboard in class will cause long-term muscle tension in the shoulder and neck, and even hurt the cervical vertebrae and nerves in severe cases, which will become a "occupational injury" for teachers.

A teacher was writing on the blackboard, asking her hand to write up in the air. In the long run, chronic inflammation such as muscle tension and pain is prone to occur. (Photo/Chen Maoxuan) Wu Jinwen, an attending physician in the Department of Rehabilitation Medicine of Shuanghe Hospital, pointed out that some teachers need to raise their arms when writing on the blackboard, because the blackboard is too high, and sometimes they have to look up at the top of the blackboard. Long-term exertion points are wrong, the exertion time is long, the load on shoulders, neck and arms is heavy, and chronic inflammation such as muscle tension and pain is prone to occur. If it is not treated and improved, it will hurt deeper cervical vertebrae and nerves, so the arm will be sour, numb and weak.

Therefore, Dr. Wu Jinwen suggested that teachers should raise their hands and stretch upward during the break after class, and cooperate with hot compress to relieve tense shoulder and neck muscles, but the hot compress time should be limited to 30 minutes. You can also strengthen the training of shoulder and neck muscle endurance through exercise at ordinary times. However, if the pain situation has not improved, or even acid, numbness and weakness appear, it means that the cervical vertebrae and nerves have been damaged, and it is necessary to take anti-inflammatory and analgesic drugs and muscle relaxants with the prescription of specialists and physical therapy to improve it.

In terms of physical therapy, Dr. Wu Jinwen pointed out that patients will be given hyperthermia, electrotherapy or cervical traction according to their condition. As for some teachers who are used to traditional massage to improve soreness, doctors have reservations about this folk therapy. Dr. Wu Jinwen believes that the strength of masseurs cannot be quantified. If the force is too large, it will cause secondary damage. The instruments in the hospital can adjust the intensity, frequency and duration, which will ensure the safety and health of patients.

However, some university teachers pointed out that lectures have been changed to electronic homework, and teaching is assisted by computers and projectors. Blackboard is used less and less, and shoulder and neck pain is less. However, most countries and high school teachers believe that using electronic textbooks will distract students, so even if they suffer, they will still put pen to paper.