An orthopaedic surgical instrument for use in resecting a patient's bone is disclosed. In some embodiments, the instrument may be for single patient use and may be disposed of at the end of each surgical procedure.

Systems (100, 900, 1100), devices, and methods may be used to print or use a patient-specific waterjet cut guide (104, 302, 902, 1102). A method may include receiving, at a processor, image data of a bone (102, 308) of a patient (702), rendering a model of the bone (102, 308) (704) and generating a cut guide model using the model of the bone (102, 308) (706). The method may include printing, using a three-dimensional (3D) printer, a waterjet cut guide (104, 302, 902, 1102) using the cut guide model. A method may include using the patient-specific waterjet cut guide (104, 302, 902, 1102) to perform a resection using a waterjet cutting device, the waterjet cutting device including a nozzle (108, 306, 406, 500A, 500B) insertable into a cut guide slot (106B, 304, 310, 906, 1104) of the patient-specific waterjet cut guide (104, 302, 902, 1102).

An orthopaedic surgical instrument assembly includes a surgical reamer, a cannulated broach, and an instrument handle. The broach includes a bore sized to slide over a shaft of the reamer. The handle attaches to the broach and also includes a bore sized to slide over a shaft of the reamer. A modular broach assembled from a number of broach segments may be used. Methods associated with the surgical instrument assembly are also disclosed.

An assembly may include a retractor pivotally coupled to a guide rod. The retractor may include a generally arcuate projection having a convex retractor surface, a concave cutting shield surface, and a retractor coupling feature. The guide rod may include an elongate member and a rod coupling feature that may be configured to engage the retractor coupling feature to pivotably couple the guide rod to the retractor. The assembly may be placed on a lateral side of a medial collateral ligament of a knee joint to retract the medial collateral ligament away from a tibial plateau of the knee joint and protect the medial collateral ligament during a tibial plateau resection procedure.

The present application relates to the technical field of biomaterials for implant and intervention, and particularly to a total knee joint prosthesis for revision after a unicompartmental knee arthroplasty including a tibial plateau and a tibial pad mounted on the tibial plateau; the tibial plateau includes an installation platform and an installation column fixedly connect to a side of the installation platform; a filling block is provided on a side of the installation platform towards the installation column; and the filling block is configured to be placed at a side of the human tibia where a unicompartmental knee arthroplasty is performed.

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 drill guide assembly for drilling a tunnel having a fixed, non-zero radius of curvature, where the drill guide assembly includes a housing and a sleeve, or cutting tube, configured to reciprocate within the distal portion where the sleeve, or cutting tube, is configured to receive a bone cutting instrument.

Presented are methods and systems for determining, monitoring, and displaying the relative positioning of two rigid bodies such as during a surgery. In particular, the present disclosure relates to methods and systems for positioning a prosthesis relative to a bone during a surgery as well as to systems and methods for verifying resulting relative positioning of adjacent bones.

A tibial suprapatellar entry portal system (1) comprising a sleeve (2), an anchor pin (200), and a trocar (40).

A femoral sizing jig for use in total arthroplasty of left and right knees, comprises a femoral body, an external-rotation-angle arm which is, preferably pivotable, relative to the femoral body for setting an external angular rotation of a left or right femur, at least one of a cutting-jig guide and a cutting jig which is, preferably slidable, relative to the femoral body and in unison with movement of the external rotation-angle arm, and a medial posterior-condylar locator which is movable in unison with the movement of the external-rotation-angle arm, so as to maintain a fixed or substantially fixed relative distance with a medial side of the at least one of a cutting-jig guide and a cutting jig. A posterior-referencing femur resecting system using said femoral sizing jig and a method of resecting a femur at a knee joint relative to the medial posterior condyle are also provided.