Dorsal Column Injury

- If injury is inferior to decussation, deficit can be ipsilateral (same side)
- If injury is superior to decussation, deficit can be contralateral (opposite side)
- Tests to determine dorsal column injury include:

• Two point discrimination
• Stereogenesis: the ability to identify an object with eyes closed.
• Graphestheai: the ability to identify a number or letter drawn on the skin
• Vibratory: tuning fork on bony surface
• Romberg: can you stand with eyes closed
• Kinesthesia: movement identified
• Association: identification of object