How does modern medicine explain the back pain described in Donguibogam? Experiencing a stiff back alongside unusual sensations in the legs can be closely related to thoracic spinal stenosis. In simple terms, thoracic spinal stenosis refers to a condition where the spinal canal in the chest area, known as the thoracic vertebrae, narrows and compresses the nerves. As the spinal cord or nerve root is compressed within this narrowed passage, various symptoms develop.
The primary cause of thoracic spinal stenosis is degenerative change. With age, the discs connecting the spinal segments lose hydration and flatten, or the ligaments forming the vertebral canal thicken and bone spurs develop, leading to osteophyte formation that narrows the space through which the spinal nerve passes. The weakening of bones and bone marrow due to kidney deficiency described in Donguibogam closely parallels these degenerative changes. It resembles the structural column of an older building weakening and deforming over time.
Stenosis in the thoracic region is harder to identify than in the neck or lower back, and the symptoms often present vaguely. In addition to back pain, it can cause leg numbness, weakness, gait disturbance, and, in severe cases, urination or defecation dysfunction. Because recovery can be challenging once the spinal nerve suffers damage, early assessment and care are critical. It may begin as awkward walking or unsteady steps, but as it progresses, walking without assistance becomes difficult, and in the worst cases, it may lead to paraplegia. Furthermore, compromised blood flow from stenosis leads to an insufficient supply of oxygen and nutrients to the nervous tissue, which is a major factor driving paresthesia and motor hypofunction. This connects directly to the Donguibogam view that impaired circulation of qi and blood from wind-cold-dampness can lead to hypofunction of nervous tissue.
For an accurate assessment, an imaging study such as magnetic resonance imaging is essential. Depending on symptom severity, conservative treatment, including medication, physical therapy, and injection therapy, is attempted first. However, if symptoms worsen despite conservative care or if there is a risk of progressive neurological damage, surgical treatment to relieve nerve compression is considered. Paying attention to even minor symptoms ensures that the central pillar of the body stays supported and the spinal cord, a vital nerve fascicle, continues to function properly.
