A minimally invasive precision cutting guide, targeting guide, implant, and other instruments comprise a system that permits a physician to surgically correct a bunion or similar deformity with a minimum disruption of surrounding soft tissue. The precision cutting guide ensures that the physician cuts bone in the proper location and orientation. Each of the instruments is designed to minimize disruption to surrounding soft tissue. The system also precisely locates an orthopedic implant such that it can fixate two bone fragments after an osteotomy, or two bones after surgery. The precision cutting guide, targeting guide, implant, and other instruments are provided in a sterile kit for the convenience of the surgeon and safety of the patient.

A surgical guide assembly is disclosed herein that includes instruments configured to aid in the alignment of surgical instruments. In one aspect, a first and second instrument are provided that are configured to be connected to each other via interfaces and each define bone contact interface. The bone contact interfaces are configured to engage with the tibia and talus, in one embodiment.

A number of improvements are provided relating to computer aided surgery. The improvement relates to both the methods used during computer aided surgery and the devices used during such procedures. Some of the improvement relate to controlling the selection of which data to display during a procedure and/or how the data is displayed to aid the surgeon. Other improvements relate to the structure of the tools used during a procedure and how the tools can be controlled automatically to improve the efficiency of the procedure. Still other improvements relate to methods of providing feedback during a procedure to improve either the efficiency or quality, or both, for a procedure.

A number of improvements are provided relating to computer aided surgery. The improvement relates to both the methods used during computer aided surgery and the devices used during such procedures. Some of the improvement relate to controlling the selection of which data to display during a procedure and/or how the data is displayed to aid the surgeon. Other improvements relate to the structure of the tools used during a procedure and how the tools can be controlled automatically to improve the efficiency of the procedure. Still other improvements relate to methods of providing feedback during a procedure to improve either the efficiency or quality, or both, for a procedure.

Measurement of a leading edge of an instrument passing from a first medium having a first density to a second medium having a second density using a displacement sensor alone. In particular, a displacement signal, a velocity signal, and an acceleration signal measured from or derived from a displacement sensor are analyzed to determine when the leading edge of the instrument passes from the first material to the second material as the leading edge of the instrument is advanced relative to the material. For instance, the measurement may be used to output an occurrence signal that indicates to a user that the instrument has passed from the first medium to the second medium. Additionally, a length measurement of the path of the instrument when passing from the first medium to the second medium may be recorded, and/or the instrument may be controlled (e.g., the instrument may be stopped).

Measurement of a leading edge of an instrument passing from a first medium having a first density to a second medium having a second density using a displacement sensor alone. In particular, a displacement signal, a velocity signal, and an acceleration signal measured from or derived from a displacement sensor are analyzed to determine when the leading edge of the instrument passes from the first material to the second material as the leading edge of the instrument is advanced relative to the material. For instance, the measurement may be used to output an occurrence signal that indicates to a user that the instrument has passed from the first medium to the second medium. Additionally, a length measurement of the path of the instrument when passing from the first medium to the second medium may be recorded, and/or the instrument may be controlled (e.g., the instrument may be stopped).

An oblique metatarsal shortening osteotomy system comprising a cut guide, wherein the cut guide comprises one or more pre-drilled fixation holes, wherein the cut guide can be placed on a metatarsal bone to enable an oblique shortening osteotomy of varying lengths, and wherein the pre-drilled fixation holes enable fixation of the cut guide to the metatarsal bone. The cut guide may comprise a central block. The cut guide may comprise one or more fixation flanges. The cut guide may comprise one or more slots to enable cuts to be made in a metatarsal. The cut guide may enable metatarsal compression through pre-drilling without need for alternative techniques. Angulation of the pre-drilling may allow for fixation to allow for intramedullary fixation to be placed within a medullary canal of an osteotomized metatarsal.

Various embodiments of devices, systems, and methods for surgical procedures, including spring-fit guides for improved guidance of surgical instruments, are disclosed.

Various embodiments of devices, systems, and methods for surgical procedures, including spring-fit guides for improved guidance of surgical instruments, are disclosed.

An orthopaedic surgical instrument includes a polymer cutting block having a number of metallic cutting guides secured thereto. A pair of metallic bushings function as saw stops at the medial and lateral ends of the cutting slot during an orthopaedic surgical procedure.