Patent ID: 7322983
Filing Date: 2008-01-29
Classification: A61B

Abstract:
1. An orthopedic implant assembly comprising an implant having at least one through bore having internal threads and a screw which has a longitudinal axis and having only one single continuous screw thread having a first section and a second section which describes a spiral defining a pitch along the longitudinal axis, and the first section and the second section have a major diameter which is the same, and the first section has a first minor constant diameter extending through the first section and the second section has a second constant minor diameter extending through the second section, and the first minor diameter is smaller than the second minor diameter, and wherein the screw thread has a cancellous configuration along the first section and a locking configuration along the second section, and wherein the thread has a leading face along the spiral which has the same pitch for the first section and the second section, wherein the screw thread has a rear surface and there is a transition area between the first and second section and wherein the rear surface of the screw thread has the same pitch in the first and second section, and wherein the pitch of the rear surface increases in the transition area.