A medical positioning apparatus (1, 100, 300) for positioning and holding an object, comprising: a telescopic member (102, 302) extending between a first end and a second end and having an adjustable length; a support member for receiving the object; a base member (2, 110, 112, 310) securable to a base; a first joint mechanism (104, 304) movably securing the support member to the first end of the telescopic member (102, 302); a second joint mechanism (106, 306) movably securing the base member to the second end of the telescopic member(102, 302), the first and second joint mechanisms each having at least two rotational degrees of freedom; a first locking device (124, 324) operatively connected to the first joint mechanism (104, 304), a second locking device (126, 326) operatively connected to the second joint mechanisms (106, 306), an intermediate locking device (128, 328) operatively connected to the telescopic member (102, 302), the first locking device (124, 324), the second locking device (126, 326), the intermediate locking device (128, 328) operable between a locked position in which the support member, the base member (2, 110, 112, 310), and the telescopic member (102, 302) are lockingly interconnected together and the length of the telescopic member (102, 302) is fixed, and a released position in which the support and base members are free to pivotally move with respect to the telescopic member (102, 302) and the length of the telescopic member (102, 302) is adjustable, the first locking device (124, 324), the second locking device (126, 326), the intermediate locking device (128, 328) being passively biased in the locked position; and a lock activation device to unlock the first locking device, the second locking device (126, 326), the intermediate locking device (128, 328) biased in the locked position in order to adjust the length of the telescopic member (102, 302) and a relative position of the support member, the base member (2, 110, 112, 310), and the telescopic member (102, 302), characterized in that the second joint mechanism comprises a housing with a top portion directly rotationally connected to the second end of the telescopic member (102, 302), a bottom portion opposite the top portion, and at least one side portion directly rotationally connected to the base member (2, 110, 112, 310), wherein the first locking device (124, 324) is fluidly connected to the intermediate locking device (128, 328) via a first fluidic connection (140, 340) extending within the telescopic member (102, 302), the intermediate locking device (128, 328) is fluidly connected to the second locking device (126, 326) via a second fluidic connection (134, 136, 138, 338) extending within the telescopic member (102, 302), wherein the lock activation device is fluidly connected to the first locking device (124, 324), the second locking device (126, 326) and the intermediate locking device (128, 328) via a fluidic pump connection (132, 332). a telescopic member (102, 302) extending between a first end and a second end and having an adjustable length; a support member for receiving the object; a base member (2, 110, 112, 310) securable to a base; a first joint mechanism (104, 304) movably securing the support member to the first end of the telescopic member (102, 302); a second joint mechanism (106, 306) movably securing the base member to the second end of the telescopic member(102, 302), the first and second joint mechanisms each having at least two rotational degrees of freedom; a first locking device (124, 324) operatively connected to the first joint mechanism (104, 304), a second locking device (126, 326) operatively connected to the second joint mechanisms (106, 306), an intermediate locking device (128, 328) operatively connected to the telescopic member (102, 302), the first locking device (124, 324), the second locking device (126, 326), the intermediate locking device (128, 328) operable between a locked position in which the support member, the base member (2, 110, 112, 310), and the telescopic member (102, 302) are lockingly interconnected together and the length of the telescopic member (102, 302) is fixed, and a released position in which the support and base members are free to pivotally move with respect to the telescopic member (102, 302) and the length of the telescopic member (102, 302) is adjustable, the first locking device (124, 324), the second locking device (126, 326), the intermediate locking device (128, 328) being passively biased in the locked position; and a lock activation device to unlock the first locking device, the second locking device (126, 326), the intermediate locking device (128, 328) biased in the locked position in order to adjust the length of the telescopic member (102, 302) and a relative position of the support member, the base member (2, 110, 112, 310), and the telescopic member (102, 302), wherein the first locking device (124, 324) is fluidly connected to the intermediate locking device (128, 328) via a first fluidic connection (140, 340) extending within the telescopic member (102, 302), the intermediate locking device (128, 328) is fluidly connected to the second locking device (126, 326) via a second fluidic connection (134, 136, 138, 338) extending within the telescopic member (102, 302), wherein the lock activation device is fluidly connected to the first locking device (124, 324), the second locking device (126, 326) and the intermediate locking device (128, 328) via a fluidic pump connection (132, 332).