Abstract: A stemless implant for shoulder arthroplasty includes a body having a proximal portion, distal portion, and an outer surface. A cylindrical extrusion is substantially perpendicular to and adjacent the proximal portion. At least a portion of the outer surface is configured to contact bone, the outer bone contacting surface comprising a concave taper. The stemless implant can be sized and shaped for insertion into a metaphysis of a humerus bone without penetrating a diaphysis of the humerus bone. The implant optionally comprises a medial fin, a lateral fin, an anterior fin, and a posterior fin. The medial fin and lateral fin may be thicker than the anterior fin. The fins may taper from the proximal portion to the distal portion.

Abstract: Devices and methods provided for joint arthroscopy contemplate and enable the provision of patient specific instruments (PSI). The devices and anatomical features of a patient are rendered adjustable by the provision of conforming surfaces and support elements to account for and enable repositioning of the anatomical features during surgery. Where the joint arthroscopy involves shoulder arthroplasty, a PSI system includes at least one shoulder PSI operable to be positioned on a bone in a shoulder in the patient. The at least one shoulder PSI allow for the transfer of preoperative planning to intra-operative procedures. The at least one shoulder PSI may be virtually designed as a model based on scan data of the bone in the shoulder of the patient. The at least one shoulder PSI may be fabricated based on the virtually-designed at least one shoulder PSI model.

Abstract: The present disclosure describes surgical instruments for orthopedic surgery, the instruments including a variety of components including one or more of a first and second arm, a first and second side member, a first and second link member, a first and second jaw member, and/or a guide assembly.

Abstract: Disclosed is a positioning instrument that includes: two branches equipped at the proximal end thereof with an opposite jaw between which the graft is positioned, the two branches moving closer to one another by a translation movement; and a drill bush including a first hole and a second hole, separated by a distance and sized for the passage and guidance of a bone drill bit. Also disclosed are an instrument kit as well as a method for attaching a graft.

Abstract: Devices and methods provided for joint arthroscopy contemplate and enable the provision of patient specific instruments (PSI). The devices and anatomical features of a patient are rendered adjustable by the provision of guide elements and feature to account for and enable repositioning of the anatomical features during surgery. Where the joint arthroscopy involves ankle arthroplasty, a PSI system includes a tibial PSI operable to be coupled to a tibia and a talar PSI operable to be coupled to a talus. Pins pass through the tibial PSI into the tibia and through the talar PSI into the talus. The tibia and talus are aligned based on the tibial PSI, the talar PSI, the pins, and optionally a connection guide operable to receive, or be coupled to, the pins. The tibial PSI and the talar PSI allow for the transfer of pre-operative planning to intra-operative procedures.

Abstract: Disclosed is a positioning instrument that includes: two branches equipped at the proximal end thereof with an opposite jaw between which the graft is positioned, the two branches moving closer to one another by a translation movement; and a drill bush including a first hole and a second hole, separated by a distance and sized for the passage and guidance of a bone drill bit. Also disclosed are an instrument kit as well as a method for attaching a graft.

Abstract: A method for fixing a bone graft on a shoulder bone includes, before selection and use of a fixation device, a preoperative plan including collecting a preoperative imaging of a shoulder of a patient; virtually 3D modeling the shoulder; identifying at least one anatomical structure; and preoperative planning by one of sizing the graft, positioning the graft on the host bone, positioning the fixation device, and/or selecting the fixation device.

Abstract: Disclosed is a bone screw fixation device including two screws and only two. The bone screw includes: a first screw provided at its proximal end with a head for compressing the bone by an end-abutment; and a second screw provided at its distal end with a bone threading having a first helix pitch and at its proximal end with a bone threading having a helix with a pitch smaller than the first helix pitch.

Abstract: A stemless implant for shoulder arthroplasty includes a body having a proximal portion, distal portion, and an outer surface. A cylindrical extrusion is substantially perpendicular to and adjacent the proximal portion. At least a portion of the outer surface is configured to contact bone, the outer bone contacting surface comprising a concave taper. The stemless implant can be sized and shaped for insertion into a metaphysis of a humerus bone without penetrating a diaphysis of the humerus bone. The implant optionally comprises a medial fin, a lateral fin, an anterior fin, and a posterior fin. The medial fin and lateral fin may be thicker than the anterior fin. The fins may taper from the proximal portion to the distal portion.

Abstract: A stemless implant for shoulder arthroplasty includes a body having a proximal portion, distal portion, and an outer surface. A cylindrical extrusion is substantially perpendicular to and adjacent the proximal portion. At least a portion of the outer surface is configured to contact bone, the outer bone contacting surface comprising a concave taper. The stemless implant can be sized and shaped for insertion into a metaphysis of a humerus bone without penetrating a diaphysis of the humerus bone. The implant optionally comprises a medial fin, a lateral fin, an anterior fin, and a posterior fin. The medial fin and lateral fin may be thicker than the anterior fin. The fins may taper from the proximal portion to the distal portion.

Abstract: Disclosed is a bone screw fixation device including two screws and only two. The bone screw includes: a first screw provided at its proximal end with a head for compressing the bone by an end-abutment; and a second screw provided at its distal end with a bone threading having a first helix pitch and at its proximal end with a bone threading having a helix with a pitch smaller than the first helix pitch.

Abstract: Disclosed is a positioning instrument that includes: two branches equipped at the proximal end thereof with an opposite jaw between which the graft is positioned, the two branches moving closer to one another by a translation movement; and a drill bush including a first hole and a second hole, separated by a distance and sized for the passage and guidance of a bone drill bit. Also disclosed are an instrument kit as well as a method for attaching a graft.

Abstract: A method and apparatus of reattaching a bone fragment to a proximal humerus of a humerus in a shoulder joint. The method includes introducing a distal end of the humeral nail into a medullary canal of the humerus. A first proximal screw is engaged with the bone fragment and a first proximal bore in the proximal end of the humeral nail to move the bone fragment toward the proximal humerus. The humeral nail and the attached bone fragment are rotated relative to the medullary canal of the humerus to position the bone fragment to an anatomically optimal location. The bone fragment is preferably one of a greater or lesser tuberosity of the proximal humerus. The method and apparatus can be used to reattach bone fragments in a variety of other joints.

Abstract: A method and apparatus of reattaching a bone fragment to a proximal humerus of a humerus in a shoulder joint. The method includes introducing a distal end of the humeral nail into a medullary canal of the humerus. A first proximal screw is engaged with the bone fragment and a first proximal bore in the proximal end of the humeral nail to move the bone fragment toward the proximal humerus. The humeral nail and the attached bone fragment are rotated relative to the medullary canal of the humerus to position the bone fragment to an anatomically optimal location. The bone fragment is preferably one of a greater or lesser tuberosity of the proximal humerus. The method and apparatus can be used to reattach bone fragments in a variety of other joints.

Abstract: An iterative method enabling a request plan to be established for an observation satellite. A plan consists in a succession of requests which are associated with pluralities of opportunities for satisfying said requests. The plan must also comply with a plurality of constraints. Each iteration k of the iterative method is made up of the following steps: new opportunity is selected; a provisional plan is derived from the preceding plan k-1 as calculated in-the preceding iteration, and from the new opportunity; provisional plan is verified for compliance with said plurality of constraints; the quality of said provisional plan is evaluated; and it is determined whether the provisional plan should be confirmed as plan k as a function of the quality of said provisional plan and of the quality of said preceding plan k-1.