Document Detail

High-flexion TKA in patients with a minimum of 120 degrees of pre-operative knee flexion: outcomes at six years of follow-up.
MedLine Citation:
PMID:  20972786     Owner:  NLM     Status:  MEDLINE    
We prospectively evaluated outcomes of high-flexion total knee arthroplasty in 165 patients who had advanced arthritis with a minimum 120-degree pre-operative knee flexion, with a mean follow-up of 77 months. Patients were divided into two groups according to their ability to perform full-range (heel-to-buttock) pre-operative knee flexion (group A) and the inability to do so (group B). The overall clinical rating was "excellent" in 96% of patients and "good" in 4% of patients. Mean maximum knee flexion decreased from 137.9° to 134.8°, with no statistical difference between pre- and post-operative knee flexion. However, patients in group A had significantly decreased knee flexion (146.2° vs. 135.0°, p < 0.001), whereas patients in group B exhibited no change in knee flexion (133.7° vs. 134.7°, p = 0.14). We found that 14.7%, 36.5% and 43.0% of the studied patients could engage in kneeling, Thai polite style sitting and cross-legged sitting, respectively, with no significant differences between groups A and B. The survival rates for any reoperation and prosthesis-related problem (such as early loosening) at six years were 98.3% and 100%, respectively. At six-year follow-up in patients with well preserved pre-operative knee flexion, the high-flexion knee prosthesis provided a favourable outcome without improving knee flexion.
Aree Tanavalee; Srihatach Ngarmukos; Saran Tantavisut; Arak Limtrakul
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Publication Detail:
Type:  Journal Article     Date:  2010-10-24
Journal Detail:
Title:  International orthopaedics     Volume:  35     ISSN:  1432-5195     ISO Abbreviation:  Int Orthop     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-08-22     Completed Date:  2011-12-15     Revised Date:  2013-07-03    
Medline Journal Info:
Nlm Unique ID:  7705431     Medline TA:  Int Orthop     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1321-6     Citation Subset:  IM    
Department of Orthopaedics, Chulalongkorn University, Bangkok 10330, Thailand.
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MeSH Terms
Aged, 80 and over
Arthroplasty, Replacement, Knee / methods*,  rehabilitation
Equipment Failure Analysis
Kaplan-Meier Estimate
Knee Joint / physiopathology,  surgery*
Knee Prosthesis
Middle Aged
Osteoarthritis, Knee / physiopathology,  surgery*
Preoperative Period
Prospective Studies
Range of Motion, Articular / physiology*
Treatment Outcome

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