Which method did Dr. Denslow utilize to study fixated segments?

Which method did Dr. Denslow utilize to study fixated segments?

• A. Animal subjects
• B. EMG's
• C. Chiropractic adjustments
• D. Radiographs

Answer: (B)

The method hinges on assessing how muscles around a restricted spinal segment behave, rather than just looking at the bones. Electromyography—measuring the electrical activity of muscles—captures this functional side. By recording signals from paraspinal muscles along the spine, you can see patterns of guarding, hypertonicity, or altered muscle recruitment that accompany a fixated segment. This functional readout helps identify where a segment is truly behaving abnormally and how it responds to intervention, which imaging or treatment alone wouldn’t reveal. Animal subjects don’t reflect human spinal coordination in this context, and radiographs show structure but not muscle function. Chiropractic adjustments are a treatment, not a measurement method. So electromyography provides the necessary functional information to study fixated segments, making it the best choice.

The method hinges on assessing how muscles around a restricted spinal segment behave, rather than just looking at the bones. Electromyography—measuring the electrical activity of muscles—captures this functional side. By recording signals from paraspinal muscles along the spine, you can see patterns of guarding, hypertonicity, or altered muscle recruitment that accompany a fixated segment. This functional readout helps identify where a segment is truly behaving abnormally and how it responds to intervention, which imaging or treatment alone wouldn’t reveal.

Animal subjects don’t reflect human spinal coordination in this context, and radiographs show structure but not muscle function. Chiropractic adjustments are a treatment, not a measurement method. So electromyography provides the necessary functional information to study fixated segments, making it the best choice.