Grey’s Anatomy Season 7 Episode 6 (Grey’s Anatomy s07e06) with title “These Arms of Mine” aired on Thursday, October 28th 2010 at 09:00 pm via ABC Network.
Here is summary for Grey’s Anatomy Season 7 Episode 6 :

A documentary film crew visits the hospital six months after the shooting to document the road to recovery for doctors and patients. The camera lenses follow Derek, Owen, Mark & Callie as they ambitiously perform a rare arm transplant surgery