RICHARD L WORLAND, MD
Medical Practice at Shrader Rd, Richmond, VA

2008030, Dec 11, 2008

Jun 7, 2007

11/759325

Richard L. Worland - Richmond VA, US
Jonathan Keenan - Ivybridge, GB

A61F 2/38

623 2014, 623 2032

A tibial cement impaction system and method are characterized by disposable frame and plunger elements which are used to drive bone cement under pressure into apertures formed in the top surface of the tibia to prevent a subsequently applied tibia plate or component of a knee prosthesis from loosening from the tibia. To prepare the tibia, the surgeon removes the top damaged surface of the tibia to define a relatively flat surface and drills a plurality of small holes or apertures into the surface. The holes are spaced across the surface. Next, the surgeon arranges the frame over the prepared tibia surface. The frame includes a wall having a generally kidney-shaped configuration which matches the outer perimeter of the top portion of the tibia and defines a chamber. Bone cement is arranged in the chamber and then the plunger, which is configured to match the contour of the wall, is pressed into the chamber, forcing the bone cement into the apertures and evenly across the top surface of the tibia. The plunger and frame are removed and discarded. Next, the tibia plate is arranged on the bone cement and driven against the tibia with the stem portion of the plate extending through the cement into the tibia. When the cement hardens, the plate is securely connected with the tibia.

4986833, Jan 22, 1991

May 5, 1989

7/347866

Richard L. Worland - Richmond VA

A61F 240

623 19

A glenoid component for an artificial shoulder joint has a retainer having an ultra high molecular weight polyethylene insert affixed thereto. The insert has a concave humerally facing articulating surface on which a ball of the humeral component articulates. The insert also has a fixation tab extending through a slot in the retainer and posteriorly from a scapular facing side of the glenoid component at an oblique angle to the articulating surface. The tab is cemented to the scapula to provide short term fixation of the glenoid component to the scapula. The retainer has a plurality of porous metal coated posts extending posteriorly from the scapular side of the glenoid component at generally the same oblique angle to the articulating surface as the insert's tab. The porous metal coating on the posts promote bone ingrowth therein for long term fixation of the glenoid component to the scapula. The retainer is illustratively made from porous metal coated Ti-6Al-4V.

6019781, Feb 1, 2000

Oct 16, 1998

9/173064

Richard L. Worland - Richmond VA

A61B 1706

606222

A surgical needle to simplify rotator cuff muscle tendon surgery and reduce the cost thereof, has a semi-circular body including a proximal end portion terminating in a point, a blunt distal end, an intermediate portion, and through-openings at each end. The proximal end of the needle is passed through bone and exits a trough formed therein. A suture from the rotator cuff tendon is passed through the proximal end through-opening. Thereafter, the needle is backed out from the bone, drawing the suture through the bone, following which the suture is tightened and secured to retain the rotation cuff tendon within the trough of the bone.