Question

which diagnostic exam would be used to detect muscle weakness?
arthroscopy
radiography
myelography
electromyography

Explanation:

Electromyography (EMG) measures electrical activity in muscles. It can detect muscle weakness by showing abnormal electrical patterns. Arthroscopy is for joints, radiography for bones (like X - rays), and myelography for the spinal cord and nerve roots.

Answer:

Electromyography