Hi a thoracotomy is a huge surgery if i am thinking of the right thing and i am sure you are still in the healing process.  
I had that same level disc removed using the less invasive Video assisted thoracic surgery. Not that it turned out easier as i had nerve damage to the nerve that controls the diaphragm muscle and thus loss of lung function with it. I do , however remember several months down the road that i still had the same annoying pain. 
As far as i understand disc space is lost as we age as the discs loose water and shrink in a way. So do we. I have had extensive spine surgery with almost my whole spine fused and have lost several inches. i would say 3 inches for sure.  
WElcome to the forum, i hope you continue healing and know we are here for all your spine and emotional needs 
judy 
		
		
		
		
		
			
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2007 ACDF 4-7 
2008 hip , knee scope, hip replacement 
2009 thoracic T-5 thru T-11fusion 
2009 VATS T7-8, posterior only  T11-12. removal of thoracic hard wear 
2010 lung surgery 
2010 T2-L2 kyphosis correction 
2010 Kyphoplasty T-3, T-4 
2011 Cervical osteotomy ,revision C4-T5 
2011 Foot surgery 
2011 Revision fusion T7 thru L4/laminectomy 
2012 Hammertoe correction left foot 
2012 Revision fusion T-12 thru L5 
2012 Revision fusion L4-L5
			 
		
		
		
		
		
	
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