What are the functions of traction and what is the role of traction devices

Traction is the movement of debris particles parallel to the bottom surface along the surface of the bed sand (directly on this surface or very closely) in a rolling, sliding, pushing and jumping manner under the traction of the fluid.

Traction is the movement of gravel along the bottom of a riverbed under the action of flowing water, the movement of sand along the desert floor under the action of wind, or the movement of beach surface under the action of waves and currents.

The traction of the car can be divided into soft traction with a traction soft rope as a tool and hard traction with a strong traction frame as a tool. No matter how you use traction, before driving, you should make a contact method and signal for starting, driving, steering, decelerating, stopping and special situations in towing (you can use horns, lights or passengers next to the driver to move ** to keep in touch).

The purpose of traction is to separate 2 objects. The role of traction for orthopedic diseases. 1. When the fracture is reduced, the overlapping bone breaks are separated; 2. The principle of lumbar spine and cervical spine disease is not separation, but by applying continuous tension to the muscles and tendons, and reflex relaxation will occur in the muscles and tendons after the equal tension is removed.

Hello, the role of the traction device is to ensure that the motor car and the vehicle are connected to each other, because the semi-trailer connected by the traction device is only a car body that exists alone, if there is no driver's head, that is, the tractor, then for the semi-trailer, just a scrap iron does not have much effect. In other words, the type is brightened to what role the traction device has for the semi-trailer. Only by connecting these two parts together is Zheng Shou's complete semi-trailer, a semi-trailer that can be rented to carry goods.

traction [qiān

yǐn] paraphrase].

1.Pull, drag.

2.inducing; Arouse.

3.Quote, quote.

4.Pull and pull, pull and pull.

By pulling on a limb or head.

Reduction of fractures and dislocations is achieved.

Immobilization, pain relief, pain relief and deformity correction are the best measures.

There are 3 ways.

Bone traction is carried out with a metal needle through the bone, with the help of a traction device, commonly used for femoral fractures are femoral condylar traction or tibial tuberosity traction, and for cervical vertebrae fractures are skull traction. Skin traction is carried out by sticking adhesive strips or styrofoam strips tightly to the affected limb** and bandaging them externally.

Sling traction can be used for cervical spondylosis (occipital and jaw sling traction), lumbar disc herniation (pelvic traction), etc.

The purpose of asking questions for traction.

Precautions for plaster fixation.

Top 3 causes of deep vein thrombosis.

In not three questions.

Answer: Promote fracture healing and maintain fracture end stability. The role of traction mainly depends on what kind of traction it is used for, mainly including fracture traction and intervertebral disc herniation traction. Fracture traction is often used in the elderly or patients with surgical contraindications, the fracture end can not be stabilized by simple plaster external fixation, and further continuous traction is needed to maintain the stability of the fracture end and muscle traction, so as to promote fracture healing, commonly in the fracture after the fracture fracture is significantly displaced and there are obvious surgical contraindications, through the continuous traction of the lower limbs to maintain the stability of the fracture end, reduce pain, and promote healing.

There is also traction of patients with intervertebral disc herniation**, especially in the early stage of cervical and lumbar disc herniation, due to the obvious compression of the nerve by the protrusion, the corresponding symptoms of nerve compression, after the traction** due to the weakening of the upper and lower forces of the intervertebral disc, there is the possibility of partial retraction of the intervertebral disc, which helps to relieve the compression of the nerve and improve the symptoms of intervertebral disc herniation.

Question: Precautions for plaster fixation.

Answer: After plaster fixation, the precautions are as follows: 1. After plaster fixation, the position of the limb fracture fixation should be raised higher than the level of the heart, which can effectively reduce the formation of swelling and edema and promote the recovery of fracture. 2. After the plaster is fixed, it is necessary to closely observe the changes in the distal blood circulation, sensation and other pain and other symptoms of the feet and hands, if the fingers turn white or purple, and there is obvious numbness, this situation is usually due to the fact that there are some more prominent positions when the plaster is applied, which compresses the nerves or blood vessels of the limbs, so it is necessary to remove the plaster immediately, look at the position of the stuck, and then re-apply the plaster.

3. During the fixation period, you can not get out of bed and move, many people will think that you can walk with a plaster cast after the cast, which is unscientific, because it will lead to a stress response at the broken end of the fracture, resulting in non-union or delayed healing of the fracture.

Deep vein thrombosis is mainly related to the following three factors: First, the blood flow rate slows down. Trauma, surgery or systemic diseases cause patients to stay in bed for a long time and slow down blood flow, which is easy to cause thrombosis, especially thrombosis of the veins of the lower limbs; Second, the viscosity of the blood increases.

For example, patients are in a hypercoagulable state, and the blood fibrinogen in patients with tumors and other diseases increases significantly, which can lead to thrombosis; Third, damage to the intima of the veins. The cause of trauma, or some catheter examinations, may lead to damage to the lining of blood vessels and cause thrombosis.