1. Evaluation of Spastic Muscle in Stroke Survivors Using Magnetic Resonance Imaging and Resistance to Passive Motion 
Lori L. Ploutz-Snyder, PhD, Brian C. Clark, PhD, Lynne Logan, PT, Margaret Turk, MD 
Archives of Physical Medicine and Rehabilitation 
Volume 87, Issue 12, Pages (December 2006)
DOI: /j.apmr
Copyright © 2006 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

2. Fig 1
Generated torque in response to passive movement of spastic (affected side) and nonspastic (unaffected side) arm movements at varying velocities for the (A) elbow extensors and (B) flexors in 6 hemiplegic stroke survivors. *Affected greater than unaffected at respective velocity. †Affected extensors: 1.571>0.087 radians/s, affected flexors: 1.571>1.047>0.087 radians/s.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2006 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

3. Fig 2
Variation in reflex torque with respect to subjective scoring based on the MAS. Note the more sensitive detection of spastic hypertonia (reflex torque) via mechanically detected force to passive movement in (A) the elbow extensors of subjects with varying degrees of MAS scores and the variation in reflex torque in (B) the elbow flexors despite all subjects having an MAS score of 1 or 1+.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2006 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

4. Fig 3
(A) Muscle strength and (B) CSA of the affected and unaffected sides. *Unaffected greater than affected.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2006 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

5. Fig 4
A representative example of an MRI scan of the unaffected and affected upper arm. Note the reduced muscle size in the elbow extensors and the increased signal intensity of the elbow flexors on the affected side.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2006 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

6. Fig 5
MRI T2 values of spastic (affected) and nonspastic (unaffected) skeletal muscle at rest and after resistance exercise. *Significant increase from postexercise value. †Affected postexercise greater than unaffected postexercise.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2006 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions