# US 10,307,192 B2 · Pre-contoured buttress plate for posterior wall acetabular fractures

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- Number: US 10,307,192 B2
- Document ID: US10307192B2
- Status: Granted
- Kind: B2
- Application number: 15/298,362
- Filed: 2016-10-20
- Published: 2018-04-26
- Granted: 2019-06-04
- Earliest claimed: 2016-10-20
- Applicants: Daniel Robert Schlatterer
- Inventors: Daniel Robert Schlatterer
- Web page: https://patentgrep.com/patent/US10307192B2

## CPC

- A61B 17/8061: {specially adapted for particular bones (A61B17/70 and A61B17/74 take precedence)}
- A61B 17/8066: {for pelvic reconstruction}
- A61B 17/809: {with bone-penetrating elements, e.g. blades or prongs (bone staples A61B17/0642; intramedullary nails with a plate at an end A61B17/7233)}
- A61B 2017/564: {Methods for bone or joint treatment}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

An improved posterior acetabular wall fracture buttress plate has a buttress plate having a pair of arms extending from a main plate. The main plate is pre-contoured with a concavity contoured to mimic a hip socket contour posteriorly along an undersurface, the arms being 1.0 cm or less wide and bent lengthwise off horizontal about 38 degrees plus or minus 8 degrees to mimic a curvature of the hip to yield an angle on the undersurface of 142 degrees plus or minus 8 degrees. This is a stand-alone buttress plate intended to accomplish a buttress effect similar to previous art of 2-3 pelvic plates.

## Claims

### Claim 1

An improved posterior acetabular wall fracture buttress plate comprises:
a buttress plate having a pair of arms extending from a main plate, the main plate being pre-contoured with a concavity contoured to mimic a hip socket contour posteriorly along an undersurface, the arms being 1.0 cm or less wide and bent lengthwise off horizontal at 38 degrees plus or minus 8 degrees to mimic a curvature of a hip to yield an angle on the undersurface of 142 degrees plus or minus 8 degrees.

### Claim 2 (depends on 1)

The improved posterior acetabular wall fracture buttress plate of claim 1 wherein the main plate of the buttress plate has at least seven locking screw holes for positional fixation of a posterior wall fracture fragment.

### Claim 3 (depends on 1)

The improved posterior acetabular wall fracture buttress plate of claim 1 wherein the buttress plate is configured to buttress, to incline and to be angularly positioned relative to a contour of the hip to support a fracture surface area by having the contoured main portion sized to allow rotation of the buttress plate.

### Claim 4 (depends on 1)

The improved posterior acetabular wall fracture buttress plate of claim 1 wherein the undersurface of the buttress plate has scallops or ridges or protrusions to provide limited bone contact.

### Claim 5 (depends on 1)

The improved posterior acetabular wall fracture buttress plate of claim 1 wherein the buttress plate is made of an implantable metal.

### Claim 6 (depends on 1)

The improved posterior acetabular wall fracture buttress plate of claim 1 wherein each of the arms has at least 2 holes for receiving bone screws.

### Claim 7 (depends on 1)

The improved posterior acetabular wall fracture buttress plate of claim 1 wherein the main plate of the buttress plate has 7 or more locking screws and the arms have two or more screw holes.

### Claim 8 (depends on 1)

The improved posterior acetabular wall fracture buttress plate of claim 1 wherein the arms have a length of 3 cm or greater.