Described are fibula malleolus caps and surgery devices with fibula malleolus caps. The fibula malleolus caps may be patient-specific fibula malleolus caps. The devices with patient-specific fibula malleolus caps overcome the sliding and rotational errors during fibula flap harvesting. A comparative clinical study demonstrates that the fibula malleolus cap enhances the accuracy of fibula flap harvesting, leading to accurate location and angulation of simultaneous dental implants.

This disclosure relates to planning systems, assemblies and methods. The planning systems, assemblies and methods disclosed herein may be utilized for planning and implementing orthopaedic procedures to restore functionality to a joint, and may include one or more transfer members for positioning implants relative to patient anatomy.

A patient-specific instrument is disclosed for performing an osteotomy. The patient-specific instrument includes a body that includes a proximal side, a distal side, a medial side, a lateral side, and an inferior side having a bone engagement surface shaped to match at least one of a first surface of a first bone, a second surface of a second bone, a third surface of a third bone, and a fourth surface of a fourth bone of adjacent joints. The instrument also includes a superior side having one or more guide features that are positioned to guide resection of at least one of the first bone, the second bone, the third bone, and the fourth bone. The body is configured to seat transverse to the adjacent joints with the bone engagement surface engaging at least one of the first surface, the second surface, the third surface, and the fourth surface.

The purpose of the present invention is to provide a spinal fusion implant capable of preserving turning properties of vertebral bodies, and in addition, capable of preventing false screwing (false insertion) of screws. Connection plates 3 constituting a spinal fusion implant 101 each have, on a ventral-side surface 3b, a convex-shaped portion 8 that is fitted into a concave-shaped portion of an intervertebral joint 53. In addition, a center hole 3d through which a center rod 4 is slidably inserted is formed on a side surface of the connection plate 3, such that the center of the hole is positioned closer to the back side than a virtual line L1 connecting midpoints on arc-shaped contour lines C of the concave-shaped portions of the adjacent intervertebral joints 53 when viewed from the head side of a human body.

A surgical device includes an body extending from a proximal end to a distal end. The distal end of the body defines a notch sized and configured to receive a reamer. A coupling assembly is supported by the body and includes a reamer guide body disposed at the distal end of the body. The reamer guide body configured to move between a first position and a second position in which the reaming guide body extends at least partially across the notch. A locking assembly is supported by the body and is configured to releasably engage the coupling assembly to maintain the reamer guide body in the second position.

A patient-specific guide tool for guiding an object toward a glenoid face of a scapula of a patient for implantation of a shoulder prosthetic device is disclosed. The guide tool includes a guide portion that includes a guide surface. The guide surface is configured to guide movement of the object toward the glenoid face. Furthermore, the guide tool includes a patient-specific portion that is operably coupled to the glenoid portion. The patient-specific portion includes at least one patient-specific surface that is three-dimensionally contoured and that is configured to nest and closely conform to a corresponding surface of the scapula to thereby position the guide surface at a predetermined position relative to the glenoid face.

A surgical assembly, a stabilisation plate and methods are disclosed. The surgical assembly comprises: a jig (100) comprising a body having a tissue-engaging surface shaped to be received by tissue to be re-orientated by a correction factor, said body defining a plurality of alignment apertures, said plurality of alignment apertures being orientated to be parallel with respect to each other on application of said correction factor. In this way, it is possible to determine from the jig itself when the desired correction factor, rotation or displacement has been applied correctly because the alignment apertures become parallel, thereby avoiding the need for additional operative measurement and/or imaging.

Devices and methods for performing a surgical step or surgical procedure with visual guidance using an optical head mounted display are disclosed.

A cutting guide for periacetabular osteotomy comprises at least a first main body having a longitudinal opening for the insertion of a cutting instrument, extending from a first end to a second end of the first main body and at least two positioning and fixing arms extending away from the first main body from opposite sides with respect to the longitudinal opening, in order to correctly position the first main body on a bone and fix it thereto through respective fastening members.

A technique is presented for computer-assisted planning of fastener placement in vertebrae that are to be stabilized by a pre-formed spinal rod, wherein two or more fasteners are to couple the rod to the vertebrae. At least one of a target shape of the spine and a shape of the pre-formed rod is defined in patient-specific shape data, a bone density of at least one of the vertebrae is defined in patient-specific bone density data, and patient-specific anatomical data are provided. A force distribution along a length of the rod may be calculated based on the shape data and the anatomical data. A planning result for fastener placement may be generated based on the bone density data of a given vertebra and the calculated force distribution.