Method for manufacturing a patient-specific prosthesis for a fractured long bone
AssigneeHowmedica Osteonics Corp.
InventorsVincent Coulange, Céline Courtade-Jouanicq, Shawn M. Gargac, Marine Godelu, Guillaume Rognin
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Abstract
Provided is a method of manufacturing a prosthesis for a fractured long bone of a patient, the method including the steps of: A) providing data representative of the fractured long bone in a patient; B) based on said data, designing the prosthesis specifically to the patient, the prosthesis including a stem part that is configured to secure fragment(s) of the fractured long bone at chosen securing position(s) that will apply chosen mechanical stress onto the bone fragments and reduce the risk of osteonecrosis of the bone fragments.
Claims10
A method of manufacturing a prosthesis for a fractured long bone of a patient, the method comprising the steps of:
- A) providing data representative of the fractured long bone of the patient, the fractured long bone comprising epiphyseal fragments, each epiphyseal fragment being:
- either a tuberosity fragment, secured to a muscle of the patient, the muscle being attached to the tuberosity fragment by means of a tendon of the muscle, or
- an articular fragment, being part of a joint of the patient, for articulating the long bone with an auxiliary bone of the patient;
- B) based on the data provided at step A), designing the prosthesis specifically to the patient, the prosthesis comprising a stem part configured for securing the epiphyseal fragments to the stem part, step B) comprising:
- a sub-step of choosing, specifically to the patient, respective securing positions of the epiphyseal fragments relative to each other, representative of how the epiphyseal fragments are planned to be positioned relative to each other when secured to the stem part, the securing positions being chosen so that a respective patient-specific mechanical stress is applied onto each epiphyseal fragment by at least one of the other epiphyseal fragments by securing the epiphyseal fragments to the respective chosen securing positions of the stem part, and
- a sub-step of designing the stem part so that the stem part is configured for securing the epiphyseal fragments at the respective chosen securing positions;
- and
- C) manufacturing the prosthesis including the stem part designed at step B).
A method of manufacturing a prosthesis for a fractured long bone of a patient, the method comprising the steps of:
- A) providing data representative of the fractured long bone of the patient, the fractured long bone comprising:
- at least one viable tuberosity fragment, secured to a muscle of the patient, the muscle being attached to said at least one viable tuberosity fragment by means of a tendon of the muscle;
- and
- a damaged articular fragment, initially being part of a damaged joint of the patient, for articulating the long bone with an auxiliary bone of the patient;
- B) based on the data provided at step A), designing the prosthesis specifically to the patient, the prosthesis comprising a stem part, configured for securing the at least one viable tuberosity fragment to the stem part, and a head part, being configured to be secured to the stem part in replacement for the damaged articular fragment,
- step B) comprising:
- a sub-step of choosing, specifically to the patient, respective securing positions of the at least one viable tuberosity fragment and of the head part relative to each other, representative of how the at least one viable tuberosity fragment and the head part are planned to be positioned relative to each other when secured to the stem part, the securing positions being chosen so that a respective patient-specific mechanical stress is applied to each of the at least one viable tuberosity fragment by the head part by securing the at least one viable tuberosity fragment and the head part at the respective chosen securing positions of the stem part, and
- a sub-step of designing the stem part so that the at least one viable tuberosity fragment and the head part may be secured to the stem part at the respective chosen securing positions;
- and
- C) manufacturing the prosthesis including the stem part designed at step B) and providing or manufacturing the head part of the prosthesis.
Dependencies are inferred from the claim text.