Abstract: The present application is directed to devices and methods to space apart vertebral members over two or more spinal levels. Embodiments of the devices may include a power source, supply line, and adjustable members. The adjustable members may be positioned along two or more spinal levels. The supply line may extend between each of the members and the power source. Activation of the power source may feed power through the supply line and to each of the adjustable members. Members may move from a closed orientation towards an open orientation to space the vertebral members.

Abstract: An impacting device includes a hollow body and a movable member. The hollow body includes an inner chamber having an interior surface, the interior surface including at least one interference member extending radially inward therefrom. The hollow body also includes an impact surface at one end thereof. The movable member has a proximal impacting surface and is at least partly disposed within the hollow body.

Abstract: An instrument for preparing a surface of a joint is provided. The glenoid surface is adapted for receiving a prosthetic component having a feature closely conforming to the surface. The prosthetic component provides a bearing surface for a head portion of a long bone. The instrument includes a guide having a first feature and a second feature and a tool. The tool is used for cooperation with the first feature for preparing the surface. The first feature is adapted to at least partially control the position of the tool as it prepares the surface. The second feature is adapted to assist in positioning of the guide with respect to the joint.

Abstract: A shoulder arthroplasty kit for shoulder arthroplasty is provided. The kit includes a stem for insertion into the humerus and a first member. The first member has a surface having a convex periphery adapted for articulation with the natural glenoid fossia. The convex periphery includes a first articulating surface defining a generally circular outer periphery of the first articulating surface and a second articulating surface extending from a portion of the circular outer periphery of the first articulating surface. The first member is removably cooperable with said stem. The kit also includes a second member including a portion having a concave periphery. The second member is removably cooperable with the stem. The kit further includes a third member for insertion into the natural glenoid fossia. The third member includes a portion having a convex periphery. The third member is adapted for articulation with the second member.

Abstract: An impacting device includes a hollow body and a movable member. The hollow body includes an inner chamber having an interior surface, the interior surface including at least one interference member extending radially inward therefrom. The hollow body also includes an impact surface at one end thereof. The movable member has a proximal impacting surface and is at least partly disposed within the hollow body.