1. UMN & LMN Lesions

2. Corticospinal Tract Brain (UMNs) Spinal Cord (LMNs) To arm To hand
To torso
Spinal
Cord
(LMNs)
To legs
To feet

3. Example: Cortical Stroke
Brain
(UMNs)
Example: Cortical Stroke
Lesion
To arm
To hand
To torso
Spinal
Cord
(LMNs)
All UMN signs
To legs
To feet

4. Example: Brain Stem Stroke
(UMNs)
Example: Brain Stem Stroke
Lesion
To arm
To hand
To torso
Spinal
Cord
(LMNs)
All UMN signs
To legs
To feet

5. Example: Cervical Cord Injury
Brain
(UMNs)
Example: Cervical Cord Injury
No signs
To arm
Lesion
To hand
LMN signs
To torso
Spinal
Cord
(LMNs)
To legs
UMN signs
To feet

6. Example: Lumbar Cord Injury
Brain
(UMNs)
Example: Lumbar Cord Injury
To arm
No signs
To hand
To torso
Spinal
Cord
(LMNs)
Lesion
To legs
LMN signs
UMN signs
To feet

7. Example: Lumbar Cord Injury
Brain
(UMNs)
Example: Lumbar Cord Injury
To arm
No signs
To hand
To torso
Spinal
Cord
(LMNs)
Lesion
To legs
LMN signs
To feet