ACCORDING TO THE ACCIDENT REPORT EMPLOYEE WAS ATTEMPTING TO REMOVE A CAP FROM AN OXYGEN CYLINDER. THE CAP BECAME STUCK AND EMPLOYEE STRUCK IT WITH HIS LEFT HAND, IN AN ATTEMPT TO FREE IT, WHEN HE DID THIS HE EXPERIENCED SOME PAIN AT THE BASE OF HIS LEFT RING FINGER. ON 6/22/01 IT WAS LEARNED THAT HE HAD JUST BEGAN A SERIES OF THERAPY TREATMENT FOR HIS INJURY.