Wright Medical Technology, Inc.

Agnovos Healthcare, LLC

Michael E Carroll

Jon Pope Moseley

Jonathan Dempsey McCanless

Olaf H Schulz

Andy Fronk

Kelly Coupe Richelsoph

Jantzen A Cole

Jonathan D Mccanless

The invention provides a particulate composition adapted for forming a bone graft substitute cement upon mixing with an aqueous solution, including i) a calcium sulfate hemihydrate powder having a bimodal particle distribution and a median particle size of about 5 to about 20 microns, wherein the calcium sulfate hemihydrate is present at a concentration of at least about 70 weight percent based on the total weight of the particulate composition; ii) a monocalcium phosphate monohydrate powder; and iii) a &#x3b2;-tricalcium phosphate powder having a median particle size of less than about 20 microns. Bone graft substitute cements made therefrom, a bone graft substitute kit comprising the particulate composition, methods of making and using the particulate composition, and articles made from the bone graft substitute cement are also provided.

Composite bone graft substitute cement and articles produced therefrom

An orthopedic prosthesis comprising a first component having a soft metal bearing surface and a second component having a hard metal bearing surface, in particular a hip prosthesis comprising a spherical bearing member, a femoral stem, and a modular neck configured for interposition between the spherical bearing member and the stem, together with an acetabular implant having a concave bearing surface configured for articulation with the spherical bearing member. One of the spherical bearing member and the concave bearing surface comprises a soft metal bearing surface, the soft metal bearing surface having a hardness of at least about 20 Rc, while the other one of the spherical bearing member and the concave bearing surface comprises a hard metal bearing surface, the hard metal bearing surface having a hardness greater than the soft metal bearing surface by at least about 15 Rc.

Metallic bearings for joint replacement

An injectable resorbable bone graft material, and methods of using the same, provide increased compressive strength after injection in a bone defect. The bone graft material is made from calcium sulfate hemihydrate having a thick stubby rod-like crystalline structure and low water-carrying capacity.

Injectable resorbable bone graft material, powder for forming same and methods relating thereto for treating bone defects

An orthopedic joint prosthesis comprising a first component having a soft metal bearing surface and a second component having a hard metal bearing surface. The soft metal bearing surface has a hardness of at least about 20 Rc, while the hard metal bearing surface having a hardness greater than the soft metal bearing surface by at least about 15 Rc. The soft and the hard metal bearing surfaces are configured to articulate with one another. The differential hardness of the hard metal bearing surface to the soft metal bearing surface is preferably at least about 1.5, and is preferably less than about 3. The hard metal bearing surface is preferably not more than about 40 Rc harder than the soft metal bearing surface. The hard metal bearing surface preferably has a hardness of between about 40 Rc and about 60 Rc.

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Memphis, TN, United States of America

Michael E Carroll