Systems and methods are provided to plan a spinal correction surgery. The method includes measuring parameters of a spine in a two-dimensional (2D) spinal image including a thoracic Cobb angle and a thoracic kyphosis (TK) and transforming the 2D image to a three-dimensional (3D), spinal image representation. The transforming includes performing segmentation of spine elements in the 2D image, and applying a formula based on the thoracic Cobb angle and the TK to the spine elements. The method includes identifying a TK goal having a post-operative TK value to selected spine elements, transforming a gap of the spine elements representative of a difference between the pre-operative TK in 3D spinal image representation and the TK goal to create a 3D post-operative spinal image representation, and determining a first rod design based on the 3D post-operative spinal image representation to achieve the post-operative TK value in the spine elements.

A bone resection instrument, comprising means of support and positioning for the correct alignment of the tool with respect to the bone to be cut, a cutting guide, connected to the means of support and positioning, comprising a support attachable to a bone to be cut. The cutting guide comprises a gauge block having a cutting surface and removably connected to said support. The instrument is part of a bone resection kit comprising a plurality of gauge blocks, each differing in height from one another.

The present technology provides patient-specific implants. The implants can include a plate having a geometry contoured to mate with an identified anatomical structure at a target position. The plate can include a first projection having a first contact surface with a first topography designed to mate with a corresponding first surface of a first vertebral body, and a second projection having a second contact surface with second topography designed to mate with a corresponding second surface of a second vertebral body. The first topography can be different than the second topography. In some embodiments, the first and/or second projection can be configured to contact, and have topographies designed to mate, with a plurality of surfaces, such as two adjacent surfaces, of the respective first and second vertebral bodies.

A patient-specific navigation guide for use in spinal surgery including a first and a second guide member, both integral with a supporting frame and extending along a respective longitudinal development axis from a proximal opening to a distal opening for guiding surgical instruments on a first vertebra of a patient. The guide also includes contact members designed to match with a corresponding plurality of contact areas on a first and on a second vertebra of the patient to define a single coupling configuration of the patient-specific navigation guide on the patient's vertebrae. The first and second guide members are substantially opposite with respect to a median plane orthogonal to a straight line joining the longitudinal axes of the first and second guide members. The navigation guide also comprises a single additional third guide member that is integral with the frame and is adapted to abut on a second vertebra.

A guide for guiding drill bits to form holes in a bone in a predetermined pattern for receiving fasteners to secure an implant to the bone is provided. The guide includes a guide body having a bone interface side opposite an operative side, the bone interface side having a bone contacting surface engageable with a surface of the bone. The guide also includes a plurality of drill guides extending from the operative side of the guide body for guiding corresponding drill bits, wherein the bone contacting surface of the guide body is configured to substantially conform to surface contours of the bone at a predetermined position on the bone. A method of designing the guide is also provided.

Patient-specific guides for the Latarjet procedure, as well as surgical systems and methods of performing the Latarjet procedure to treat glenohumeral instability using such patient-specific guides are disclosed. A patient-specific coracoid guide and a patient-specific glenoid guide may be configured based on preoperatively generated three-dimensional models of the patient's shoulder anatomy. Guides may be configured for coracoid graft preparation and glenoid decortication. The coracoid graft may be placed in the desired position based on three-dimensional (3D) preoperative planning.

The present invention relates to a bidirectional fixation steel plate and a bone shaft fixation system. The bidirectional fixation steel plate comprises a steel plate body, wherein the steel plate body is used to be implanted from a front side of a bone shaft and has a structure matched with the front side of the bone shaft to fixedly fit with a fracture end, the steel plate body is provided with at least two pairs of guide holes for first locking screws to pass through respectively in the structure matched with the front side of the bone shaft, and angles of the guide holes enable the first locking screws passing through to clamp an intramedullary nail together to control rotation and axial stability of the intramedullary nail. The bidirectional fixation steel plate proposed by the present invention may achieve support, anti-rotation and axial stability of the bone shaft fracture end through the cooperation of the first locking screws and the guide holes of the steel plate body provided with specific angles, to further enhance the reliability of fixation after reduction, thereby effectively guaranteeing to assist in stable reduction and healing of the fracture site.

Provided is an implant for sternum replacement including an upper face, a posterior face, extensions for fitting with the ribs and extensions for fitting with the manubrium, wherein that implant is manufactured in a single piece with high performance engineering polymers, with an anatomical adjustment tailored to each patient, which guarantees the reduction of the number of elements in contact with the patient, facilitating and speeding up the surgical procedure, at the same time, the required mechanical and flexibility properties, are guaranteed.

Methods for understanding external and internal anatomy of bones through the use of imaging data and 3D modeling to facilitate the design of anatomically correct plates, devices and implants are disclosed. In one aspect the method results in an implant or plate that includes at least one curved surface wherein a contour of the at least one curved surface corresponds to an anatomic shape of a subject. The anatomic shape of the subject being determined based on an image of the bone.

A surgical device includes a first body component including at least one insert embedded therein and a second body component including a patient-specific surface. The first body component includes a first material and the at least one insert includes a second material. The first body component defines at least one first hole and the second body component defines at least one second hole. The second body component is configured to be coupled to the first body component such that the at least one first hole and the at least one second hole are aligned when the first body component is coupled to the second body component to define at least one continuous fixation hole sized and configured to receive an elongate fixation device at a predetermined location.