title: Tibial rotation kinematics subsequent to knee arthroplasty.
abstract: BACKGROUND
  The use of computer assisted joint replacement has facilitated precise intraoperative measurement of knee kinematics. The changes in "screw home mechanism" (SHM) resulting from Total Knee Arthroplasty (TKA) with different prostheses and constraints has not yet been accurately described.
  
  
  METHODS
  A pilot study was first completed. Intraoperative kinematic data was collected two groups of 15 patients receiving different prostheses.
  
  
  RESULTS
  On average, patients lost 5.3° of ER (SD = 6.1°). There was no significant difference between the prostheses or different prosthetic constraints.
  
  
  CONCLUSIONS
  There significant loss of SHM after TKA. Further research is required to understand its impact on patient function.
authors.affiliation: University of New South Wales, Sydney, 2052, Australia.
authors.forename: Duane J
authors.initials: DJ
authors.lastname: Collins
authors.affiliation: Department of Orthopaedic Surgery, Nepean Hospital, Sydney, 2747, Australia ; Nepean Clinical School, Sydney University, Sydney, 2747, Australia.
authors.forename: Yasser H
authors.initials: YH
authors.lastname: Khatib
authors.affiliation: Sydney Orthopaedic Research Institute, Royal North Shore Hospital, Sydney, 2065, Australia.
authors.forename: David A
authors.initials: DA
authors.lastname: Parker
authors.affiliation: Department of Orthopaedic Surgery, St George Hospital, Sydney, 2217, Australia.
authors.forename: Deanne E
authors.initials: DE
authors.lastname: Jenkin
authors.affiliation: Department of Orthopaedic Surgery, St George Hospital, Sydney, 2217, Australia ; St George Clinical School, University of NSW, Sydney, 2217, Australia.
authors.forename: Robert B
authors.initials: RB
authors.lastname: Molnar
keywords: Arthroplasty; Computer assisted surgery; Knee rotation; Osteoarthritis; Screw home mechanism
references.citation: Int Orthop. 2012 Jul;36(7):1387-92
references.pmid: 22270863
references.citation: J Arthroplasty. 2013 Mar;28(3):439-44
references.pmid: 23433255
references.citation: J Biomech. 2005 May;38(5):1075-83
references.pmid: 15797589
references.citation: J Orthop Res. 2000 Nov;18(6):856-64
references.pmid: 11192244
references.citation: J Bone Joint Surg Am. 2005 Feb;87(2):332-8
references.pmid: 15687156
references.citation: Fam Pract. 2005 Feb;22(1):103-8
references.pmid: 15640302
references.citation: Clin Orthop Relat Res. 2004 Sep;(426):187-93
references.pmid: 15346072
references.citation: Clin Orthop Relat Res. 2002 Nov;(404):172-88
references.pmid: 12439258
references.citation: J Orthop Res. 2006 Aug;24(8):1607-14
references.pmid: 16770795
references.citation: Acta Orthop Scand Suppl. 2001 Feb;72(299):1-52
references.pmid: 11381581
references.citation: Clin Orthop Relat Res. 2008 Oct;466(10):2491-9
references.pmid: 18704612
references.citation: Proc Inst Mech Eng H. 2007 Nov;221(8):821-32
references.pmid: 18161242
references.citation: Clin Orthop Relat Res. 2010 Jan;468(1):57-63
references.pmid: 19844772
references.citation: Knee. 2007 Aug;14(4):253-63
references.pmid: 17531493
references.citation: Lancet. 2012 Apr 7;379(9823):1331-40
references.pmid: 22398175
references.citation: J Bone Joint Surg Br. 2000 May;82(4):499-505
references.pmid: 10855870