J Knee Surg 2015; 28(01): 075-082
DOI: 10.1055/s-0034-1368144
Original Article
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Joint Line Restoration in a Contemporary Revision Knee System

Kirby Hitt
1  Department of Orthopaedics, Baylor Scott and White Healthcare, Temple, Texas
,
Manoshi Bhowmik-Stoker
2  Stryker Orthopaedics, Mahwah, New Jersey
,
Michael Howard
2  Stryker Orthopaedics, Mahwah, New Jersey
,
Yogesh Mittal
3  The Orthopaedic Center, Tulsa, Oklahoma
,
R. David Heekin
4  Heekin Orthopaedic Institute for Research, Inc., Jacksonville, Florida
,
David Jacofsky
5  The CORE Institute, Sun City West, Arizona
› Author Affiliations
Further Information

Publication History

11 December 2013

01 January 2014

Publication Date:
06 February 2014 (online)

Abstract

We investigated a new revision total knee arthroplasty device and associated instrumentation to determine if it could reduce intraoperative complexity and restore the joint line through the arc of motion. In a prospective multicenter study, a total of 95 consecutive patients undergoing a revision knee arthroplasty were evaluated. Medical history, functional health scores, and intraoperative data were collected. The joint line was restored to 28 mm ± 5 mm in full extension and 90-degree flexion. Significant improvements were noted in all functional and general health scores. The anatomic boss position may allow for a reduction in instrumentation, as the need for femoral offset adapters was limited. Joint line restoration with proper posterior condylar offset correlated with positive functional outcomes.