A polyaxial bone anchoring device includes a receiving part with a rod receiving portion defining a recess for receiving a rod, and a head receiving portion with a wall that defines an accommodation space for accommodating a head of an anchoring element, and a locking member positionable at least partially around the head receiving portion and movable from a first position where the head can pivot in the accommodation space to a second position where an angular position of the head is locked. The wall of the head receiving portion further defines at least one cavity in communication with the accommodation space that reduces a radial thickness of at least part of the wall located between the accommodation space and the locking member, and at least part of the cavity is separated radially from the accommodation space by a portion of the wall.

A fixation system for immobilizing a skeletal structure is provided. It includes an internal fixation system having a rod-plate subsystem, a shaft subsystem, and a midfoot plate subsystem. It further includes an external fixation system adapted to connect to the internal fixation system and having a sole that provides a weight-bearing platform underneath a patient's foot to enable a patient to walk with the fixation system.

A guide device for an orthopedic surgery on a phalange includes a distal part having a pin guide is provided. The distal part includes a first opening having a first diameter at a proximal end for inserting at least a portion of a phalange into a tubular section of the distal part, and a second opening at a distal end. The pin guide is connected to the distal end, having a first length which is shorter than a length of a k-wire inserted into the phalange, and a second diameter which is greater than a diameter of the k-wire, and less than the first diameter. In certain embodiments the guide device further includes a proximal part having an aperture for inserting the phalange and a plurality of fasteners, for fastening the proximal part to the distal part.

A pedicle screw implant construct kit, comprising at least one pedicle screw, at least one collar comprising a recess for receiving a rod, the collar configured to be coupled to a head of the pedicle screw, an elongated rod for connecting the collar to one more additional collars to couple between the pedicle screw and one or more additional screws, and a locking ring sized to be positioned over at least a distal portion of the collar to restrain relative movement of the screw head and rod by exerting radial compression force onto the collar. In some embodiments, the components of the kit are comprised of carbon reinforced composite material, optionally with no radiation blocking material. In some exemplary embodiments of the invention, the kit includes two locking rings on a collar, optionally both below the rod.

The present disclosure provides an adjustable external fixator which can be utilized in bone transport or bone lengthening. The adjustable external fixator includes a body, a positioning member, a bone coupling member, and a threaded rod. The body includes a slideway. At least one of the positioning member and the bone coupling member is slidably coupled to the slideway of the body.

A pedicle screw implant construct kit, comprising at least one pedicle screw, at least one collar comprising a recess for receiving a rod, the collar configured to be coupled to a head of the pedicle screw, an elongated rod for connecting the collar to one more additional collars to couple between the pedicle screw and one or more additional screws, and a locking ring sized to be positioned over at least a distal portion of the collar to restrain relative movement of the screw head and rod by exerting radial compression force onto the collar. In some embodiments, the components of the kit are comprised of carbon reinforced composite material, optionally with no radiation blocking material. In some exemplary embodiments of the invention, the kit includes two locking rings on a collar, optionally both below the rod.

Embodiments of the invention include an external fixation system that includes at least one external fixation strut that is both acutely adjustable and precisely adjustable and related methods of adjustment. Acute adjustment may be accomplished using one or more mobile jaws that may be engaged with or disengage from a threaded rod of each external fixation strut. Precise adjustment of each external fixation strut may be accomplished after releasing a lock biased toward a locked position. When each external fixation struts lock is released, a portion of each of the precise adjustment mechanism of each external fixation strut may be activated to increase and decrease the length of each of the at least one external fixation struts.

An external fixation system for the correction of long bone deformities includes an elongate beam element having an engagement feature along a longitudinal edge of the elongate beam element, a connector element secured to the elongate beam and structurally configured to support a first bone anchor extending from the external fixation system, and a movable carriage engaged with the engagement feature along the longitudinal edge of the elongate beam element and selectively movable along the engagement feature of the elongate beam element. The movable carriage is selectively lockable into a position along the elongate beam element. The movable carriage is structurally configured to support a second bone anchor extending from the external fixation system.

The present invention relates to a medical positioning device, comprising a first carriage assembly configured for mounting a first pin, wherein the orientation of the first pin is adjustable by means of a first spherical joint with three rotational degrees of freedom with an angular range of at least ±10° each, a second carriage assembly configured for mounting a second pin, wherein the orientation of the second pin is adjustable by means of a second spherical joint with three rotational degrees of freedom with an angular range of at least ±10° each and an extension assembly configured for adjusting a distance between the first pin and the second pin.

Embodiments of the invention include an external fixation system that includes at least one external fixation strut that is both acutely adjustable and precisely adjustable and related methods of adjustment. Acute adjustment may be accomplished using one or more mobile jaws that may be engaged with or disengage from a threaded rod of each external fixation stmt. Precise adjustment of each external fixation strut may be accomplished after releasing a lock biased toward a locked position. When each external fixation struts lock is released, a portion of each of the precise adjustment mechanism of each external fixation strut may be activated to increase and decrease the length of each of the at least one external fixation struts.