Method to measure medial-lateral offset relative to a mechanical axis
US9456769B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2013 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Oct 21, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/4668
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system and method for measuring medial-lateral tilt of a bone is disclosed. The bone is coupled to a joint of the muscular-skeletal system. The method comprises coupling a three-axis accelerometer to a prepared bone surface of a bone. The three-axis accelerometer is configured to measure position, rotation, and tilt. The joint is rotated between two points. The rotation between the two points traverses an arc having a maximum therebetween. The joint pivots off of a surface to which the bone is coupled. In one embodiment, a pivot point and joint rotation relates to a mechanical axis of the joint and bone. The three-axis accelerometer measures data points along the arc as it is rotated between the two points. Multiple passes along the arc generates sufficient data points to determine the maximum. The position of the maximum is used to calculate the medial-lateral tilt of the bone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.