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US 7,608,110 B2Granted
Systems for bone replacement
OwnerShawn W. O'Driscoll, Joel Gillard +1inventors
InventorsShawn W. O'Driscoll, Joel Gillard, David G. Jensen
Life of this patent
Estimating the term…
Abstract
Systems for replacement of the ends of bones with prostheses, and methods of using the systems for bone replacement.
Claims13
A device for replacement of a proximal end of a radius bone in an elbow joint, comprising:
- an elbow prosthesis including
- a body portion including a stem configured to be received in a bore of a radius bone, the stem defining a longitudinal axis;
- and
- a radial head portion having a shape corresponding to a proximal head of a radius bone to permit articulation of the head portion with a humerus bone and an ulna bone adjacent the radius bone in an elbow joint, the head portion being mounted on the body portion and including a side wall defining medial, lateral, anterior, and posterior surface regions and also including a concave proximal articulation surface defining a proximal plane that is tilted towards the medial and posterior surface regions at a fixed angle from perpendicular to the longitudinal axis, the fixed angle being defined by manufacture of the body and head portions,
- wherein the head portion is elongated along a first head axis that is orthogonal to the longitudinal axis, wherein a second head axis is coplanar with the first head axis and orthogonal to both the longitudinal axis and the first head axis, and wherein the proximal plane intersects a plane containing the first and second head axes to define a line that is oblique to the first and second head axes, therefore the head portion being bilaterally asymmetrical such that the head portion is configured to replace either a right radial head or a left radial head, but not both, and
- wherein the body portion and the head portion are provided by a body component and a head component that are discrete from one another.
3 more elements
A device for replacement of a proximal end of a radius bone in an elbow joint, comprising:
- an elbow prosthesis including
- a body portion including a stem configured to be received in a bore of a radius bone, the stem defining a longitudinal axis;
- and
- a radial head portion having a shape corresponding to a proximal head of a radius bone to permit articulation of the head portion with a humerus bone and an ulna bone adjacent the radius bone in an elbow joint, the head portion being mounted on the body portion and including a side wall defining medial, lateral, anterior, and posterior surface regions and also including a concave proximal articulation surface defining a proximal plane that is tilted towards the medial and posterior surface regions at a fixed angle from perpendicular to the longitudinal axis, the fixed angle being defined by manufacture of the body and head portions,
- wherein the head portion includes a reference mark formed on the lateral surface region, wherein a first head axis is orthogonal to the longitudinal axis and intersects the longitudinal axis and the reference mark, wherein a second head axis is coplanar with the first head axis and orthogonal to both the first head axis and the longitudinal axis, and wherein the proximal plane intersects a plane containing the first and second head axes to define a line that is oblique to the first and second head axes, therefore the head portion being bilaterally asymmetrical such that the head portion is configured to replace either a right radial head or a left radial head, but not both, and
- wherein the body portion and the head portion are provided by a body component and a head component that are discrete from one another.
3 more elements
Dependencies are inferred from the claim text.