flaccidity
Pronunciation: FLAK-sid-uh-tee
A state of reduced or absent muscle tone resulting in weak, floppy muscles following neurological injury.
Full Definition
Flaccidity refers to a condition of abnormally low muscle tone (hypotonia) or complete absence of muscle tone, resulting in weak, limp muscles that offer little resistance to passive movement. In neuro rehabilitation, flaccidity commonly occurs in the acute phase following stroke, spinal cord injury, or other central nervous system damage. This condition typically presents immediately after injury and may persist or gradually transition to spasticity over time. Flaccid muscles cannot provide adequate support for posture or movement, significantly impacting functional activities. Assessment involves testing muscle tone through passive range of motion, and treatment focuses on positioning, electrical stimulation, and gentle strengthening exercises.
Usage
Usage note: Distinguish from simple weakness; flaccidity specifically refers to muscle tone changes, not strength.
In Context
- "The patient's initial presentation included complete flaccidity of the right upper extremity with absent reflexes." — Acute care assessment
- "Shoulder subluxation risk was elevated due to flaccidity in the deltoid and supraspinatus muscles." — Physical therapy evaluation