Logo of The Journal of Bone & Joint Surgery (Br)
Quick search:        
          Advanced Search
Guest Access | Sign In
Journal of Bone and Joint Surgery - British Volume, Vol 89-B, Issue 11, 1457-1461.
doi: 10.1302/0301-620X.89B11.19840  
Copyright © 2007 by British Editorial Society of Bone and Joint Surgery
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow View responses
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow My Folders
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Web of Science (4)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Han, H. S.
Right arrow Articles by Yoon, K. S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Han, H. S.
Right arrow Articles by Yoon, K. S.

High incidence of loosening of the femoral component in legacy posterior stabilised-flex total knee replacement

H. S. Han, MD, Clinical Professor1; S.-B. Kang, MD, PhD, Associate Professor1; and K. S. Yoon, MD, PhD, Associate Professor1

1 Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul Metropolitan Boramae Hospital, 31-1 Boramae-gil, Dongjak-gu, 156-707 Seoul, Korea.

Correspondence should be sent to Professor S.-B. Kang; e-mail: ossbkang{at}gmail.com

We have examined the results obtained with 72 NexGen legacy posterior stabilised-flex fixed total knee replacements in 47 patients implanted by a single surgeon between March 2003 and September 2004.

Aseptic loosening of the femoral component was found in 27 (38%) of the replacements at a mean follow-up of 32 months (30 to 48) and 15 knees (21%) required revision at a mean of 23 months (11 to 45). We compared the radiologically-loose and revised knees with those which had remained well-fixed to identify the factors which had contributed to this high rate of aseptic loosening.

Post-operatively, the mean maximum flexion was 136° (110° to 140°) in the loosened group and 125° (95° to 140°) in the well-fixed group (independent t-test, p = 0.022). Squatting, kneeling, or sitting cross-legged could be achieved by 23 (85%) of the loosened knees, but only 22 (49%) of the well-fixed knees (chi-squared test, p = 0.001). The loosened femoral components were found to migrate into a more flexed position, but no migration was detected in the well-fixed group.

These implants allowed a high degree of flexion, but showed a marked rate of early loosening of the femoral component, which was associated with weight-bearing in maximum flexion.




This article has been cited by other articles:


Home page
 J Bone Joint Surg BrHome page
T.-H. Kim, D.-H. Lee, and S.-I. Bin
The NexGen LPS-flex to the knee prosthesis at a minimum of three years
J Bone Joint Surg Br, October 1, 2008; 90-B(10): 1304 - 1310.
[Abstract] [Full Text] [PDF]

eLetters:

Read all eLetters

Successful results with a high flexion posterior stabilised knee prosthesis
Giles R. Scuderi
J Bone Joint Surg Br Online, 21 Dec 2007 [Full text]

(c) British Editorial Society of Bone and Joint Surgery All Rights Reserved
Registered charity no: 209299     Print ISSN: 0301-620X
Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General