Document Detail


Comparison between standard and high-flexion posterior-stabilized rotating-platform mobile-bearing total knee arthroplasties: a randomized controlled study.
MedLine Citation:
PMID:  20952606     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: A high-flexion posterior-stabilized rotating-platform mobile-bearing prosthesis was designed in an attempt to improve the range of motion after total knee arthroplasty without compromising the theoretical advantages of the posterior-stabilized rotating-platform mobile-bearing system. The aim of this study was to compare the outcomes of standard and high-flexion posterior-stabilized rotating-platform mobile-bearing total knee arthroplasties.
METHODS: One hundred and seventy knees were randomly allocated to receive either a standard (n = 85) or a high-flexion (n = 85) posterior-stabilized rotating-platform mobile-bearing prosthesis and were followed prospectively for a minimum of two years. Ranges of motion, functional outcomes determined with use of standard scoring systems, and radiographic measurements were assessed. In addition, patients' abilities to perform activities requiring deep knee flexion and patient satisfaction were evaluated with use of questionnaires.
RESULTS: The average postoperative maximal flexion was 130° for the knees with the standard design and 128° for those with the high-flexion design, and the difference was not significant. The two prosthetic designs also did not differ significantly with regard to the Knee Society scores; Hospital for Special Surgery (HSS) scores; or the scores on the pain, stiffness, and function subscales of the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC). In addition, the numbers of knees able to perform deep-flexion-related activities and the rates of patient satisfaction were similar in the two study groups.
CONCLUSIONS: This prospective randomized study revealed no significant differences between standard and high-flexion posterior-stabilized rotating-platform mobile-bearing total knee prostheses in terms of clinical or radiographic outcomes or range of motion at a minimum of two years postoperatively.
Authors:
Won Chul Choi; Sahnghoon Lee; Sang Cheol Seong; Jong Hun Jung; Myung Chul Lee
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Publication Detail:
Type:  Comparative Study; Journal Article; Randomized Controlled Trial     Date:  2010-10-15
Journal Detail:
Title:  The Journal of bone and joint surgery. American volume     Volume:  92     ISSN:  1535-1386     ISO Abbreviation:  J Bone Joint Surg Am     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-11-18     Completed Date:  2010-12-21     Revised Date:  2011-06-08    
Medline Journal Info:
Nlm Unique ID:  0014030     Medline TA:  J Bone Joint Surg Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2634-42     Citation Subset:  AIM; IM    
Affiliation:
Department of Orthopaedic Surgery, Seoul National University Hospital, 101 Daehang-ro, Jongno-gu, Seoul 110-744, South Korea.
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MeSH Terms
Descriptor/Qualifier:
Aged
Aged, 80 and over
Arthroplasty, Replacement, Knee / methods*,  rehabilitation
Chi-Square Distribution
Female
Follow-Up Studies
Humans
Knee Prosthesis*
Male
Middle Aged
Pain Measurement
Pain, Postoperative / physiopathology
Patient Satisfaction
Postoperative Care / methods
Prospective Studies
Prosthesis Design*
Range of Motion, Articular / physiology*
Risk Assessment
Treatment Outcome
Comments/Corrections
Comment In:
J Bone Joint Surg Am. 2010 Nov 17;92(16):e29   [PMID:  21084573 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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