System and method for measuring slope or tilt of a bone cut on the muscular-skeletal system
First Claim
1. A method of measuring slope or tilt of a tibial prosthetic component coupled to a tibia comprising the steps of:
- placing a leg in a predetermined position;
coupling a prosthetic component having a position measurement system against a bone landmark of the tibia wherein the prosthetic component is not in the prosthetic knee joint, wherein the prosthetic component is configured to measure a reference position, and wherein the prosthetic component includes a transmitter configured to transmit measurement data;
receiving measurement data from the prosthetic component wherein a computer receives the measurement data, wherein the reference position is stored in memory coupled to the computer, and wherein the reference position corresponds to the predetermined position of the leg.
3 Assignments
0 Petitions
Accused Products
Abstract
A system and method is disclosed herein for measuring bone slope or tilt of a prepared bone surface of the muscular-skeletal system. The system comprises a three-axis accelerometer for measuring position, rotation, and tilt. In one embodiment, the three-axis accelerometer can be housed in a prosthetic component that couples to a prepared bone surface. The system further includes a remote system for receiving, processing, and displaying quantitative measurements from one or more sensors. A bone is placed in extension. The three-axis accelerometer is referenced to a bone landmark of the bone when the bone is in extension. The three-axis accelerometer is then coupled to the prepared bone surface with the bone in extension. The slope or tilt of the bone surface is measured. In the example, the slope or tilt of the bone surface corresponds to at least one surface of the prosthetic component attached thereto.
-
Citations
28 Claims
-
1. A method of measuring slope or tilt of a tibial prosthetic component coupled to a tibia comprising the steps of:
-
placing a leg in a predetermined position; coupling a prosthetic component having a position measurement system against a bone landmark of the tibia wherein the prosthetic component is not in the prosthetic knee joint, wherein the prosthetic component is configured to measure a reference position, and wherein the prosthetic component includes a transmitter configured to transmit measurement data; receiving measurement data from the prosthetic component wherein a computer receives the measurement data, wherein the reference position is stored in memory coupled to the computer, and wherein the reference position corresponds to the predetermined position of the leg. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A method of measuring slope or tilt of a tibial prosthetic component coupled to a tibia comprising the steps of:
-
placing a leg in extension; coupling a sensored insert having a position measurement system to the tibial ridge of the tibia wherein the sensored insert is not in the prosthetic knee joint, wherein the sensored insert is configured to measure a reference position, wherein position is measured in real-time with an inertial sensor, and wherein the sensored insert includes a transmitter configured to transmit measurement data; referencing the sensored insert to the tibial ridge when the sensored insert is within a predetermined vertical range; receiving measurement data from the sensored insert wherein a computer receives the measurement data, wherein the reference position is stored in memory coupled to the computer, and wherein the reference position corresponds to the predetermined position of the leg. - View Dependent Claims (19, 20, 21, 22, 23, 24)
-
-
25. A method of measuring slope or tilt of a tibial prosthetic component coupled to a tibia comprising the steps of:
-
placing the prosthetic component on a first reference plane; and measuring the first reference plane; reversing a position of the prosthetic component on the first reference plane 180 degrees; measuring the first reference plane; averaging measurements of the first reference plane wherein the computer receives the measurement data and is configured to average the measurements related to the first reference plane; and zeroing the prosthetic component to reference to the first reference plane wherein the computer is configured to identify the first reference plane to zero gravity; placing a leg in a predetermined position; coupling a prosthetic component having a position measurement system to the tibia wherein the prosthetic component is not in the prosthetic knee joint, wherein the prosthetic component is configured to measure a reference position, and wherein the prosthetic component includes a transmitter configured to transmit measurement data; receiving measurement data from the prosthetic component wherein a computer receives the measurement data, wherein the reference position is stored in memory coupled to the computer, and wherein the reference position corresponds to the predetermined position of the leg. - View Dependent Claims (26, 27, 28)
-
Specification