Robert A Siston

US Patent:

20120085353, Apr 12, 2012

Filed:

Jul 14, 2011

Appl. No.:

13/183055

Inventors:

Robert A. Siston - Dublin OH, US
Thomas L. Maack - Cincinnati OH, US
Cornel C. Van Gorp - Powell OH, US
Horst E. Maack - Cincinnati OH, US

Assignee:

THE OHIO STATE UNIVERSITY - Columbus OH

International Classification:

A61G 15/00
A61B 5/103

US Classification:

128845, 600595

Abstract:

The stability of an animal joint, especially a knee, is assessed with an arrangement having track arranged about perpendicular to the axis of the distal portion; a cart slidably engaged to the track; a fork positioned on the cart; a support adapted to receive the distal linear portion, the support connected to the fork; a lever arm connected to the support, the lever arm positioned to rotate the support about the axis of the distal portion; and at least one instrumented handle, the instrumented handle detachably engages at least one of the cart and the lever arm. In some embodiments, the fork can rotate freely on the cart. Additionally, in various embodiments, the cart may be selectively locked at a position along the length of the track. In various embodiments, the arrangement further comprises: a bracket rigidly attached to the distal portion and positioned between the support and the joint; and the at least one instrumented handle detachably engages the bracket.

US Patent:

20080249394, Oct 9, 2008

Filed:

Apr 3, 2008

Appl. No.:

12/062334

Inventors:

Nicholas Giori - Stanford CA, US
Robert Siston - Dublin OH, US
Scott Delp - Stanford CA, US

Assignee:

The Board of Trustees of the Leland Stanford Junior University - Stanford CA

International Classification:

A61B 5/00
A61B 17/56

US Classification:

600407, 606102

Abstract:

A method for improved rotational alignment of the bones in joint surgery is described. The method involves the tracking of the relative motion of a third bone in with respect to the movement of the first and second bone. In one aspect of the invention, the motion of the patella is used to derive the axis of rotation of the femoral and tibial components in total knee arthroplasty, either alone or in combination with other techniques.