Dynamization tabs and methods of use are provided. Dynamization tabs may be used with an external fixation ring or other fixator device as part of a therapeutic treatment of bone fractures or malformations. The device forms a connection between one or more fixation struts and an external fixation ring so as to introduce controllable amounts of movement or dynamization to the arrangement of the struts and the fixator. By introducing controlled amounts of dynamization, therapeutic benefits can be derived in the enhanced, accelerated bone formation, mineralization and remodeling of the underlying bone. Dynamization tabs may comprise a strut connector, a mechanical biasing or dynamizing device, and a ring connector. Many different forms for introducing controlled amounts of dynamization are disclosed.

Dynamic reference arrays use markers and trackers to register a patient's anatomy to computer system. Wherein the dynamic reference array may be screwed into a patient's spinous process, clamped on to a spinous process, or attached to the spinous process using posts. In embodiments, a dynamic reference array may comprise a single structure comprising and attachment member and a scaffold. In alternate embodiments, the dynamic reference array may comprise distinct structures that allow the dynamic reference array to swivel and collapse in order to facilitate registration, while not interfering with a surgical procedure.

A monoplanar device for stabilizing and distracting an anatomical joint is disclosed including first and second shafts having engagement features that form a hinge joint with a single axis of rotation, the shafts being constrained by the hinge joint to move relative to one another only around the single axis of the hinge joint. The shafts and the hinge joint are disposed in a single plane with the single axis being about orthogonal thereto. A first clamp having a recess and a pin hole is slidingly disposed on the first shaft, and a second clamp having a pin hole is slidingly disposed on the second shaft. The pin holes are arranged to receive bone pins for insertion into bones adjacent to the anatomical joint. A distraction screw disposed between a threaded partial bore of the first shaft and the recess rotates to advance the first clamp along the first shaft.

The present disclosure relates to improved external fixation strut comprising: 29. an elongated body comprising a first and a second hollow tubular shaft; 30. opposite connectors respectively coupled to an end portion of the first or the second shaft and each including a ball and socket joint; 31. one shaft having an internal diameter that is slightly larger than the external diameter than the other shaft to host internally the other shaft in a slidably and telescopic manner; 32. said first and second shafts of the strut being realized by a synthetic radiolucent plastic material; 33. a clamp element provided in proximity of overlapping ends of the first and second shaft for providing a fast gripping action stopping the telescopic sliding of one shaft inside the other shaft; 34. a manually operated fixation element acting on the clamp element for exerting said fast gripping action.

A fixation system is also disclosed including at least a first and a second fixation ring and/or at least a fixation arch interconnected by at least one of the above fixation struts.

In an embodiment of the invention, a fixator for fixating bone fractures includes a Y-frame having superior, anterior and posterior arms. The arms may be slotted and may accept mounting hardware for supporting fixation pins or transfixion pins. Various components of mounting hardware may be able to be adjusted either in discrete steps or in continuous manner, for various degrees of either translation or rotation. The Y-frame may be rigid, or may have joints that allow either angulation or arm-twisting adjustment. Arms may be provided joinable interchangeably to a hub. A kit of such parts may be provided.

Dynamization devices and methods of use are provided. A dynamization device may comprise first and second modules that are mated together in a substantially cylindrical shape. The outer surface of the first and second modules are connected to deformable rings that may be deformed when a longitudinal force is applied to the first and second modules. The deformation of the rings creates a longitudinal mechanical bias in the device to return it to its original shape. The strength, spring coefficient, and size of the dynamization device can be adjusted depending upon the particular needs of the application.

Dynamization devices and methods of use are provided. A dynamization device may comprise first and second modules that are mated together in a substantially cylindrical shape. The outer surface of the first and second modules are connected to deformable rings that may be deformed when a longitudinal force is applied to the first and second modules. The deformation of the rings creates a longitudinal mechanical bias in the device to return it to its original shape. The strength, spring coefficient, and size of the dynamization device can be adjusted depending upon the particular needs of the application.

Dynamization tabs and methods of use are provided. Dynamization tabs may be used with an external fixation ring or other fixator device as part of a therapeutic treatment of bone fractures or malformations. The device forms a connection between one or more fixation struts and an external fixation ring so as to introduce controllable amounts of movement or dynamization to the arrangement of the struts and the fixator. By introducing controlled amounts of dynamization, therapeutic benefits can be derived in the enhanced, accelerated bone formation, mineralization and remodeling of the underlying bone. Dynamization tabs may comprise a strut connector, a mechanical biasing or dynamizing device, and a ring connector. Many different forms for introducing controlled amounts of dynamization are disclosed.

In an embodiment of the invention, a fixator for fixating bone fractures includes a Y-frame having superior, anterior and posterior arms. The arms may be slotted and may accept mounting hardware for supporting fixation pins or transfixion pins. Various components of mounting hardware may be able to be adjusted either in discrete steps or in continuous manner, for various degrees of either translation or rotation. The Y-frame may be rigid, or may have joints that allow either angulation or arm-twisting adjustment. Arms may be provided joinable interchangeably to a hub. A kit of such parts may be provided.

Provided are a telescoping, adjustable orthopedic strut for use in conjunction with an external bone fixation (EBF) device and an EBF device that employs the strut. The strut includes swivel hinges at each end, wherein each swivel hinge is lockable in any position within a one hundred eighty degree (180) plane and has a three hundred sixty degree (360) angle of rotation with respect to an orthopedic plate of the EBF device; an outer sleeve; an inner sleeve configured to slide within the outer sleeve; wherein the inner sleeve and outer sleeve may be positioned and fixed with respect to each other to provide an acute adjustment of the length of the strut; a leadscrew threaded into the inner sleeve, wherein the lead screw can be either rotated or fixed in position to provide a fine adjustment of the length of the strut.