Your spine is back in your body, but some advance technologies remain: Your torso can now be crippled again, but your Strength (STR) and Damage Threshold (DT) bonuses have doubled! (+2)”— In-game description
This perk will replace Spineless if you opt to have the Sink Auto-Doc re-insert your spine when the option becomes available.
Behind the scenes
|The following is based on Fallout New Vegas cut content and has not been confirmed by canon sources.|
Apparently, the original counterpart to Spineless was to be called 'Spine-full', and the description implies it would provide +1 Agility, +5 Sneak, and +1 Charisma. Additionally, there is also a mirror of Reinforced Spine with a different description and the effects from Spineless.
It's good to have your own spine again. You're more agile now (+1 AGL), a bit sneakier (+5 Sneak Skill) and you've gain more confidence in your posture and movement (+1 CHA).”— Spine-full description
Your spine has been augmented with advanced technologies: Your torso can no longer be crippled and your Strength (STR) and Damage Threshold (DT) have been increased (+1).”— Reinforced Spine mirror description
|End of information based on Fallout New Vegas cut content.|