Traditional Culture Encyclopedia - Photography major - X-ray stress photography
X-ray stress photography
1. Pathology: Irregular cartilage injury, subchondral sclerosis, cyst, marginal osteophyte hyperplasia, increased blood flow in metaphysis, synovitis in different degrees.
2. Histology: early cartilage surface fragmentation, chondrocyte proliferation, longitudinal crack of cartilage surface, crystal deposition, cartilage repair and osteophyte proliferation; In the late stage, the cartilage was completely destroyed, which showed cartilage sclerosis, cartilage disappearance and subchondral focal osteonecrosis.
3. Biomechanics: The ductility, compression resistance, shear resistance and cartilage permeability of articular cartilage decreased. Cartilage moisture increased, excessive swelling, subchondral bone sclerosis.
4. Biochemical changes: the content (concentration) of proteoglycan decreased, its molecular size and aggregation degree changed, the size and arrangement of collagen fibers and the synthesis and degradation of matrix macromolecules changed abnormally.
5. Nutrition: The root cause of hyperosteogeny is calcium deficiency. It's the result of stress reaction.
The X-ray manifestations of the elderly generally have recurrent low back pain, and may also be accompanied by radiation pain of lower limbs. Treatment should be based on the specific symptoms and general situation of the patient.
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