 However, there was a layer of fibrous tissue overlying the exiting nerve root which was removed by placing a Woodson resector in a plane between the fibrous sheath and the nerve root and incising it with a 15 blade. 
However , there was a layer of fibrous tissue overlying the exiting nerve root which was removed by placing a Woodson resector in a plane between the fibrous sheath and the nerve root and incising it with a 15 blade .