Upper Back
Structures
There are twelve thoracic (or dorsal) vertebrae in this area, with twelve pairs of ribs forming the rib cage which contains the heart and lungs. At the front of the body the upper ten ribs are attached to the sternum or breast bone by means of cartilage. Below the ribs, the large diaphragm muscle has attachments to the sternum, the lower ribs and the vertebrae of the lower spine. The diaphragm is involved in breathing.
At the back, the flat shoulder blade bones are positioned over the ribs. The spinal nerves exit from the spinal cord through openings between vertebrae, and supply the skin and muscles of the back and chest. They also have branches, going internally to the heart and respiratory system.
The Causes of body Stress in the Upper Back
The chest and back areas may be strained by working in a hunched or twisted posture, e.g. bending over a sewing machine, doing woodwork, etc. Body stress may be caused by lifting heavy objects or by holding something up for a long time. Body stress may also occur as a painful spasm of the diaphragm muscle. Besides the mechanical causes mentioned above, the cause may be emotional tension, such as shock or anxiety, e.g. the typical "butterflies in the stomach" feeling.
In addition the cause may be chemical, e.g. irritation from eating or drinking something spicy, acid or very cold. In addition, if there is body stress in the lower back, it may be referred into the muscles of the chest and upper back.
Working in a hunched position.
The Effects of Stress in the Upper Back
There may be a mild, nagging ache in the upper back between the shoulder blades, or possibly a persistent itching. The body stress may also manifest as a severe stabbing pain in this area, or in the chest. The pain is worsened by deep breathing. Body stress in the diaphragm muscle may result in indigestion or heartburn, or a feeling of breathlessness.
Body stress in the mid and upper back may have an impact on the nerve supply to various internal organs, such as heart, lungs, kidney and bladder, and may interfere with normal function.
Do not remain working in a hunched or twisted posture for any lengthy period. Take frequent breaks or change position. In heavy lifting the object should be held close to the body. Do not carry heavy objects without assistance. Avoid foods and drinks which tend to cause indigestion or heartburn, and certain food combinations which cause bloating and pressure in the diaphragm area.