Abstract: An intramedullary hip screw is provided which includes an intramedullary rod, a lag screw and a sleeve for slidably receiving the lag screw. The sleeve is received in a passage in the intramedullary rod having an axis positioned at an angle relative to the longitudinal axis of the intramedullary rod such that the axis of the sleeve is directed toward the head of the femur. The intramedullary hip screw of the present invention permits sliding compression of selected fractures, particularly intertrochanteric fractures and fractures of the femoral neck.

Abstract: A medical drill or pin adapter which is X-ray transparent for aligning a drill bit or pin with an internal line of sight during a surgical procedure utilizes gears mounted within a housing. A drive source engages with the drill adapter rod which in turn rotates, via the gears, a drill bit or pin which is held by the adapter. The drive source is located and oriented out of a line of sight of the direction of the drill bit or pin. The housing, gears and the bit holder for holding the drill bit or pin are formed of X-ray transparent material.The medical drill or pin adapter can be used in a medical X-ray system for aligning a drill bit or pin with an internal line of sight during a surgical procedure. The system includes an X-ray generating source for creating an X-ray field and an imaging monitor for observing an internal configuration in a patient's body within the X-ray field.