Abstract: A cannula (1) comprising a central axis (2), a front end (3) and a through channel (5) coaxial or parallel to said central axis (2) and defining a peripheral wall (12) of said cannula (1), wherein A) said cannula (1) further comprises at least two perforations (8) penetrating said peripheral wall (12) transversely to said central axis (2); B) said through channel (5) is open at said front end (3); and C) the cross section of said through channel (5) has a contraction (6) with a diameter di located between the front most of said at least two perforations (8) and said front end (3) which is formed as a guidance for a wire (7). A device (10) for liquid jet irrigation of bone comprising such a cannula (1) and a wire (7).

Abstract: A cannula (1) comprising A) a central axis (2), a front end (3), a rear end (4) and a channel (5) coaxial or parallel to said central axis (2) and defining a peripheral wall (12) of said cannula (1); B) referencing means (15) at said rear end (4), so that said cannula (1) can be brought in a desired position relative to a cavity (120) in a bone; wherein C) said cannula (1) further comprises at least two perforations (8) penetrating said peripheral wall (12) transversely to said central axis (2); and D) said at least two perforations (8) are arranged in a portion (16) of said peripheral wall (12) which extends over an arc (18) orthogonal to said central axis (2) with a central angle ?<270°.

Abstract: A bone cement configured to be introduced to a target bone location and allowed to cure includes at least a monomer, and an amount of bone marrow. The resulting cured bone cement includes at least one desired mechanical property that can be tailored to match a like mechanical property of the target bone. The mechanical property can be a material stiffness (Young's modulus) or yield strength.

Abstract: A cannula (1) comprising a central axis (2), a front end (3) and a through channel (5) coaxial or parallel to said central axis (2) and defining a peripheral wall (12) of said cannula (1), wherein A) said cannula (1) further comprises at least two perforations (8) penetrating said peripheral wall (12) transversely to said central axis (2); B) said through channel (5) is open at said front end (3); and C) the cross section of said through channel (5) has a contraction (6) with a diameter di located between the front most of said at least two perforations (8) and said front end (3) which is formed as a guidance for a wire (7). A device (10) for liquid jet irrigation of bone comprising such a cannula (1) and a wire (7).

Abstract: A cannula (1) comprising A) a central axis (2), a front end (3), a rear end (4) and a channel (5) coaxial or parallel to said central axis (2) and defining a peripheral wall (12) of said cannula (1); B) referencing means (15) at said rear end (4), so that said cannula (1) can be brought in a desired position relative to a cavity (120) in a bone; wherein C) said cannula (1) further comprises at least two perforations (8) penetrating said peripheral wall (12) transversely to said central axis (2); and D) said at least two perforations (8) are arranged in a portion (16) of said peripheral wall (12) which extends over an arc (18) orthogonal to said central axis (2) with a central angle ?<270°.

Abstract: A method for applying bone cement into a bone structure that includes the steps of: selecting at least one region in a bone where the trabecular bone structure is to be augmented, producing at least one cavity (20) communicating with said at least one bone region, applying a fluid jet lavage towards said at lest one bone region, and providing bone cement to said at least one bone region.