-
Categories
-
Pharmaceutical Intermediates
-
Active Pharmaceutical Ingredients
-
Food Additives
- Industrial Coatings
- Agrochemicals
- Dyes and Pigments
- Surfactant
- Flavors and Fragrances
- Chemical Reagents
- Catalyst and Auxiliary
- Natural Products
- Inorganic Chemistry
-
Organic Chemistry
-
Biochemical Engineering
- Analytical Chemistry
-
Cosmetic Ingredient
- Water Treatment Chemical
-
Pharmaceutical Intermediates
Promotion
ECHEMI Mall
Wholesale
Weekly Price
Exhibition
News
-
Trade Service
A 59-year-old woman with rheumatoid arthritis presents with shock-like pain triggered by progressive gait difficulty and neck flexion (Lhermitte sign) for more than
6 months.
On examination, the patient has hyperreflexes in the extremities, active deep abdominal reflexes, and loss of superficial abdominal reflexes (reflex separation) (video).
MRI shows compression of the spinal cord due to anterior atlantoaxial subluxation and retrodental pannus (synovial tissue hyperplasia) (figure).
20% of normal people may have a superficial abdominal reflex.
However, abdominal reflex separation suggests upper motor neuron lesions
above the T6 spinal cord segment.
(Figure: In patients with rheumatoid arthritis, sagittal T2WI [A] showed spinal cord compression and high signal at C1-C2 levels due to anterior atlantovertebral subluxation [solid line arrow] and retrodental vascular [small arrow]; Axial T2WI confirms spinal cord compression due to atlantoaxial subluxation [arrow, B])
(Video: Abdominal reflex separation; Loss of superficial abdominal reflexes with active deep abdominal reflexes)
