The reference pin guide (2) comprises a guide hole (9) for guiding a reference pin (3).

The pin guide is open to the inside of the connector.

The outer pin (12a) is guided outwards in the case (1) on account of the outer pin guide (6a).

The remote-controlled actuator (5) is provided with a body housing (4) to which a base end of the spindle guide (3) is connected.

When the slide (11) is thus moved farther away from the opening (7), the outer pin (12a) and the outer pin guide (6a) release the disc (16) so that it can be removed from the case (1).

The lead guide (120) and receiver (115) may both be integrally molded with the socket (110).

The bone cutting guide assembly (111) includes a base pin (112) and a guide mounting arrangement comprising a placement pin guide (113).

A guide pin (7) is guided in each of the guides (2).

The reference pin guide (2) comprises a guide hole (9) for guiding a reference pin (3).

A curved guide or fixation pin (12) is provided for use in the fixation of fractured bones.

The pin guide is open to the inside of the connector.

On the motor spindle is a linear guide according to the invention, which allows an advancing movement of the tool parallel to the spindle axis.

The outer pin (12a) is guided outwards in the case (1) on account of the outer pin guide (6a).

A linear guide (21) which allows an advancing movement of the tool parallel to the spindle axis (20) is provided on the motor spindle (2).

The stopper mechanism is provided with a stationary body, a pin body, a pin body guide, and a stopper body.