Surgical instruments, such as distractors and methods of manufacture are provided for maintaining a displacement of bone determined to be necessary by a surgeon. For instance, a surgical distractor may include a first holder section, a second holder section, a first displacement element, a second displacement element, a positioning element, and a rotatable component having an opening. The second holder section may be coupled to the first holder section using one or more coupling elements coupled to both the first holder section and the second holder section. The first displacement element and the positioning element may be positioned on the first holder section and the second displacement element and the rotatable opening may be positioned on the second holder section configured to engage the first displacement element.

Surgical instruments, such as distractors and methods of manufacture are provided for maintaining a displacement of bone determined to be necessary by a surgeon. For instance, a surgical distractor may include a first holder section, a second holder section, a first displacement element, a second displacement element, a positioning element, and a rotatable component having an opening. The second holder section may be coupled to the first holder section using one or more coupling elements coupled to both the first holder section and the second holder section. The first displacement element and the positioning element may be positioned on the first holder section and the second displacement element and the rotatable opening may be positioned on the second holder section configured to engage the first displacement element.

This disclosure is directed to tibial cutting guide assemblies for preparing a tibia for receiving an arthroplasty implant. Exemplary tibial cutting guide assemblies may include a tibial cutting block for making precise cuts in the tibia, and a slope setting pin for establishing a patient specific tibial slope. The tibial cutting guide assemblies allow for level resection while providing surgical control over internal/external rotation and varus/valgus alignment.

Monocortical pin (1) for an external fixator for temporary and/or permanent fixing applications for treating bone fractures and connecting two or more bone fragments together, comprising an elongated cylindrical stem (2) which extends along a longitudinal axis (X) and a conical portion (3) with a tip having an external thread for inserting the pin (1) inside a bone; where said elongated cylindrical stem (2) has a flattened surface (2a) which lies along a reference plane (A) parallel to the longitudinal axis (X) and said conical portion (3) with the tip has an overall length, measured along the longitudinal axis, equal to the diameter (d) of the stem (2) +20% of said diameter (d); said monocortical pin (1) is characterized in that the conical portion (3) comprises a tip (31) which has a centring zone (33) which extends longitudinally over a length equal to 6-8% of the diameter (d) of the stem (2), and a threaded portion (32); moreover the conical portion (3) comprises two base cones (3a and 3b) having two different angles of conicity, a first base cone (3a) in a distal position with respect to the elongated cylindrical stem (2) of the monocortical pin and a second base cone (3b) in a proximal position with respect to the elongated cylindrical stem (2) of the monocortical pin; said first base cone (3a) having an angle of conicity of 13°; said second base cone (3b) having an angle of conicity of 26°.

An access device for accessing an intervertebral disc having an outer shield comprising an access shield with a larger diameter (˜16-30 mm) that reaches from the skin down to the facet line, with an inner shield having a second smaller diameter (˜5-12 mm) extending past the access shield and reaches down to the disc level. This combines the benefits of the direct visual microsurgical/mini open approaches and the percutaneous, “ultra-MIS” techniques.

An access device for accessing an intervertebral disc having an outer shield comprising an access shield with a larger diameter (˜16-30 mm) that reaches from the skin down to the facet line, with an inner shield having a second smaller diameter (˜5-12 mm) extending past the access shield and reaches down to the disc level. This combines the benefits of the direct visual microsurgical/mini open approaches and the percutaneous, “ultra-MIS” techniques.

An access device for accessing an intervertebral disc having an outer shield comprising an access shield with a larger diameter (˜16-30 mm) that reaches from the skin down to the facet line, with an inner shield having a second smaller diameter (˜5-12 mm) extending past the access shield and reaches down to the disc level. This combines the benefits of the direct visual microsurgical/mini open approaches and the percutaneous, “ultra-MIS” techniques.

An access device for accessing an intervertebral disc having an outer shield comprising an access shield with a larger diameter (˜16-30 mm) that reaches from the skin down to the facet line, with an inner shield having a second smaller diameter (˜5-12 mm) extending past the access shield and reaches down to the disc level. This combines the benefits of the direct visual microsurgical/mini open approaches and the percutaneous, “ultra-MIS” techniques.

The present invention provides a method for generating a bone fixation implant and related preoperative planning. The method comprises a first step of determining at least the orientation and the position of the fixation means, based on a 3D model of the bone fragments. The method may include a second step of defining the shape of one or more bone plates, based on the output of the first step. The method may further include a third step determining tools for applying fixation means during surgery, according the optimized configuration defined in the first step and applying the bone plates from the second step. The method may even further include a fourth step, quantifying construct stability for a given patient following surgery, thereby allowing early weightbearing.

A dilation introducer for orthopedic surgery is provided for minimally invasive access for insertion of an intervertebral implant. The dilation introducer may be used to provide an access position through Kambin's triangle from a posterolateral approach. A first dilator tube with a first longitudinal axis is provided. A second dilator tube may be introduced over the first, advanced along a second longitudinal axis parallel to but offset from the first. A third dilator tube may be introduced over the second, advanced along a third longitudinal axis parallel to but offset from both the first and the second. An access cannula may be introduced over the third dilator tube. With the first, second, and third dilator tubes removed, surgical instruments may pass through the access cannula to operate on an intervertebral disc and/or insert an intervertebral implant.