I'm surprised Ronnie did not get atrophy in his leg from nerve damage; the disk operation seems too low for being the "root" of his supposedly "lat nerve impingement", ought be posture related then, looks evenend out now.
Low back pain often cause biomechanical imbalance; which could be the cause of his triceps; nerve root pinched on C7-C8... kinda like an induced scoliosis.
Chick, wanna chime on this?