Distal radius plate
A distal radius plate according to the invention is ergonomically formed to be more easily centered on the radius bone. The distal radius plate has two main portions: an elongated portion that attaches to the body of the radius and a distal radius portion that attaches to the lower most, wider portion of the radius bone. Because of its ergonomic shape the distal radius plate is fast and easy to center on the radius and install. In another embodiment, the distal radius plate may include a metal support that is partially or entirely covered with a plastic to eliminate or reduce detailed machining of the metal, which reduces part cost and manufacturing time.
1. A distal radius plate configured to fit on a radius bone, the radius bone including a body portion and a distal radius, the distal radius plate comprising:
(a) an elongated portion with one or more first openings, the elongated portion configured to be attached to the body portion of the radius bone; and
(b) a distal radius portion with one or more second openings, wherein at least some of the one or more second openings are formed at an outward angle, and configured so that screws passing through the one or more first openings are received in the body portion and screws passing through the one or more second openings are received in the distal radius; and
(c) a fastener having a stem with a first diameter and a head with a second diameter that is greater than the first diameter; and
(d) a slot in the elongated portion, the slot having an upper opening and a lower opening that is smaller than the upper opening, the slot being configured: (i) to receive the fastener in order to anchor the elongated portion of the distal radius plate on the radius bone; (ii) so that when the fastener is positioned in the slot and in the radius bone, the distal radius plate can be moved lengthwise and side-to-side to be properly positioned on the radius bone; and (iii) so the fastener stem extends through the lower opening and the head is positioned in the upper opening and cannot extend through the lower opening;
wherein the elongated portion has a visible center line to assist in centering the distal radius plate on the radius bone.
2. The distal radius plate of claim 1 , wherein there is an upward bend between the elongated portion and the radius portion.
3. The distal radius plate of claim 2 , wherein the radius portion is ¼″ to ½″ above the elongated portion.
4. The distal radius plate of claim 1 , wherein the slot is between ½″ and 1½″ in length.
5. The distal radius plate of claim 1 , wherein there are multiple first openings.
6. The distal radius plate of claim 5 , wherein the elongated portion has an end distal the distal radius portion and an end proximal the distal radius portion and each of the first openings is between the distal end and the slot.
7. The distal radius plate of claim 1 , wherein the elongated portion has an end distal the distal radius portion and the distal end is tapered to form a rounded edge.
8. The distal radius plate of claim 1 , wherein the distal radius portion has different second openings formed at different angles in order to accommodate different-sized distal radiuses.
9. The distal radius plate of claim 1 , wherein the distal radius portion has an enlarged opening between the second openings and the elongated portion.
10. The distal radius plate of claim 8 , wherein there is a first set of second openings to fit one sized hand and a second set of second openings to fit a different sized hand, wherein the first set of second openings are formed at different angles than the second set of second openings.
11. The distal radius plate of claim 1 , wherein each of the second openings has a locking mechanism to hold a fastener in place.
12. The distal radius plate of claim 1 , wherein the distal radius portion has a shape and size that enables it to self center on the distal radius bone.
13. The distal radius plate of claim 1 , wherein the distal radius portion has a shape of the distal radius.
14. The distal radius plate of claim 1 , wherein the one or more second openings are positioned such that at least one bone portion in the distal radius can be engaged by at least two fasteners.
15. The distal radius plate of claim 1 , wherein the second openings are positioned such that more than one bone portion in the distal radius can be engaged by more than one fastener.
16. The distal radius plate of claim 1 , wherein the elongated portion has a top surface, and a bottom surface configured to rest against the body portion of the radius bone, the bottom surface being concave.
17. The distal radius plate of claim 1 wherein there is a first set of second openings configured to fit one sized hand and a second set of second openings configured to fit a different sized hand, wherein the first set of second openings are positioned farther from a center of the distal radius portion than the second set of second openings.
18. The distal radius plate of claim 1 , wherein at least an upper half of the distal radius portion is shaped the same as the distal radius.
19. The distal radius plate of claim 1 , wherein at least an upper 75% of the distal radius portion is shaped the same as the distal radius.
20. The distal radius plate of claim 1 , wherein a bottom of the elongated portion has a stop including a ridge to prevent rotation.
21. The distal radius plate of claim 20 , wherein the stop is at an end of the elongated portion distal from the distal radius portion.
22. The distal radius plate of claim 1 that further includes a top side comprising the center line.