. the senior credit facility is rated a- by standard & poor 2019s ratings services and is not rated by moody 2019s investors 2019 service , inc . notwithstanding recent interruptions in global credit markets , as of the date of this report , we believe our access to our senior credit facility has not been impaired . in october 2008 , we funded a portion of the acquisition of abbott spine with approximately $ 110 million of new borrowings under the senior credit facility