Document Detail

Execution accuracy of bone resection and implant fixation in computer assisted minimally invasive total knee arthroplasty.
MedLine Citation:
PMID:  19581096     Owner:  NLM     Status:  MEDLINE    
While computer assisted total knee arthroplasty (TKA) has been documented to increase the surgical accuracy in the planning process, there is little information about the accuracy in execution processes. We aimed to determine the accuracy of execution processes for bone resections and implant fixation in TKAs performed with the techniques of computer assisted navigation and minimally invasive surgery. Execution deviations, defined as the differences between planned targets and executed results, were evaluated for bone resections and implant fixation in 107 TKAs. In tibia resection, the mean resection thickness, coronal alignment, and sagittal alignment were 0.2mm smaller, 0.3 degrees more valgus, 0.3 degrees less posterior slope than the planned, respectively. In femur resection, the mean resection thicknesses in the medial and lateral femoral condyles, coronal alignment, and sagittal alignment were 0.6mm smaller, 0.8mm smaller, 0.1 degrees more varus, and 0.7 degrees less posterior slope than the planned, respectively. In implant fixation, the mean coronal alignment and degree of extension was 0.7 degrees more valgus and 1.6 degrees decrease than the planned, respectively. Only the occurrence of unacceptable executions in implant fixation had significant effects on the final coronal alignment. The density of a bone and the quality of saw blade had significant effect on the accuracy of bone resections. Execution deviations from planned alignment commonly occur in computer-assisted minimally invasive TKA, resulting typically from the techniques of bone resections and implant fixation, and this information should be considered to improve the surgical accuracy of navigated TKAs.
Tae Kyun Kim; Chong Bum Chang; Yeon Gwi Kang; Byung June Chung; Hyung Joon Cho; Sang Cheol Seong
Related Documents :
23595996 - Effect of passive ultrasonic irrigation and manual dynamic irrigation on smear layer re...
10632446 - Reduced anterior tibial translation associated with adaptive changes in the anterior cr...
22251236 - A comparative in vitro evaluation of two different magnetic devices detecting the stabi...
24597786 - Effect of ceramic thickness and shade on mechanical properties of a resin luting agent.
22190936 - Newer root canal irrigants in horizon: a review.
16966906 - Benefits of an implant platform modification technique to reduce crestal bone resorption.
Publication Detail:
Type:  Journal Article     Date:  2009-07-05
Journal Detail:
Title:  The Knee     Volume:  17     ISSN:  1873-5800     ISO Abbreviation:  Knee     Publication Date:  2010 Jan 
Date Detail:
Created Date:  2009-11-25     Completed Date:  2010-01-26     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9430798     Medline TA:  Knee     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  23-8     Citation Subset:  IM    
Joint Reconstruction Center, Seoul National University Bundang Hospital, Seongnamsi, Gyunggido 463-707, South
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Aged, 80 and over
Arthroplasty, Replacement, Knee / instrumentation,  methods*
Bone Cements
Femur Head / surgery
Knee Prosthesis*
Middle Aged
Reproducibility of Results
Surgery, Computer-Assisted / methods*
Surgical Procedures, Minimally Invasive*
Tibia / surgery
Reg. No./Substance:
0/Bone Cements

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

Previous Document:  Changes in cerebrospinal fluid nerve growth factor levels during chick embryonic development.
Next Document:  Synthesis, antiviral activity and molecular modeling of oxoquinoline derivatives.