Right sternocleidomastoid muscle

The right sternocleidomastoid muscle is one of the many muscles in the human body and is located on the outside of the human breast. The blood supply to the sternocleidomastoid muscle is divided into three parts, mainly arteries and supplemented by veins. The sternocleidomastoid muscle can contract freely and will help the chest find inspiration at a fixed time. The sternocleidomastoid muscle can also have various diseases, the most common of which is sternocleidomastoid muscle spasm. What should we do at this time?

1. Overview of the sternocleidomastoid muscle

In the front of the manubrium neck, the sternocleidomastoid muscle clavicular head, in the upper 1/3 of the distal end, the two triangular spaces completely lock the joint top between the supraclavicular fossa. The muscle is behind the outside, outside the nipple, in the outer 1/3. The anterior branch of the nerve connects to the 2nd to 4th cervical nerves. Contraction of one side causes the head and neck to flex to the same side and turn to the opposite side; contraction of both sides causes the line of action of the muscles to be behind the frontal axis of the atlanto-occipital joint to extend the head, and the line of action of the muscles to be in front of the frontal axis of the atlanto-occipital joint to flex the head. When fixed on top, lift the chest to assist in breathing.

The blood supply of the sternocleidomastoid muscle is divided into three parts: upper, middle and lower. The upper part comes from the occipital artery, the middle part comes from the superior thyroid artery, and the lower part comes from the transverse cervical artery of the thyrocervical trunk. The blood supply mainly comes from the upper part, and in a few cases, the thyrocervical trunk is the main blood supply. The veins are companion veins of each muscular artery, and are respectively injected into the external jugular vein, superior thyroid vein, internal jugular vein, etc.

1. Location

Deep in the platysma muscle, on both sides of the neck.

2. Function

Lateral contraction flexes the neck to the same side and to the side; contraction, the muscle force line of action behind the head at the Atlas-occipital joint extends the head, and the muscle force line of action in front of the Atlas-occipital joint bends the head. At a fixed time, in the chest to help inspiration.

3. Blood supply

The blood supply of the sternocleidomastoid muscle is divided into three parts: upper, middle and lower. The upper part comes from the occipital artery, the middle part comes from the superior thyroid artery, and the lower part comes from the transverse cervical artery of the thyrocervical trunk. The blood supply mainly comes from the upper part, and in a few cases, the thyrocervical trunk is the main blood supply. The veins are companion veins of each muscular artery, and are respectively injected into the external jugular vein, superior thyroid vein, internal jugular vein, etc.

2. What to do if you have sternocleidomastoid muscle contracture

The functional regulatory system that plays a leading role in the human body. The structure and function of the human body are extremely complex. The functions of various organs and systems in the body and various physiological processes are not carried out in isolation, but are interconnected, influenced and closely coordinated under the direct or indirect regulation and control of the nervous system, making the human body a complete and unified organism to achieve and maintain normal life activities.

What should I do if the sternocleidomastoid muscle is contracted? There are several surgeries that can release the contracted sternocleidomastoid muscle:

① Subcutaneously cut off the clavicle attachment of the sternocleidomastoid muscle. This method is somewhat dangerous and can easily damage nearby blood vessels and nerves, so it is rarely used.

② The resected pectoral muscles are only suitable for the elderly and patients with more serious deformities, and the postoperative effect is not good.

③Sternocleidomastoid tendon cut-off: The operation is simple, the effect is good, and it is more commonly used.

④ Bipolar release of the sternocleidomastoid muscle is suitable for older children.

⑤ Sternocleidomastoid Z-plasty is suitable for older children or those whose other surgeries have failed.