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Comparison between patient-specific instruments and conventional instruments and computer navigation in total knee arthroplasty: a randomized controlled trial.
- Source :
- Knee Surgery, Sports Traumatology, Arthroscopy; Dec2015, Vol. 23 Issue 12, p3637-3645, 9p, 1 Black and White Photograph, 7 Charts
- Publication Year :
- 2015
-
Abstract
- <bold>Purpose: </bold>The current study investigated the accuracy in achieving proper lower limb alignment and individual component positions after total knee arthroplasty (TKA) with 3 different instrumentation techniques. It was hypothesized that patient-specific instruments (PSI) would achieve more accurate lower limb alignment and component positions compared to conventional instruments (CON).<bold>Methods: </bold>Ninety knees in 81 patients were randomized in 1:1:1 ratio into CON, computer navigation (NAV) and PSI groups to receive TKA. The surgical routines were standardized. The lower limb mechanical axis and individual component positions were assessed on standard radiographs. Tourniquet time, operation time and patients' functional scores were documented.<bold>Results: </bold>Conventional instruments and PSI were more likely to result in an excessively flexed femoral component (p = 0.001) compared to NAV. Number of outliers in postoperative lower limb alignment, and other components positions in the coronal and sagittal plane showed no statistically significant difference. The mean tourniquet time and operation time was significantly shorter in CON and PSI groups than NAV group (p < 0.001). Four early complications occurred in the PSI group (p = 0.015). At 3-month follow-up, there was no difference in terms of the knee range of motion and patients' function among the 3 groups.<bold>Conclusion: </bold>No significant radiological and clinical benefit could be demonstrated in using PSI over CON or NAV in TKA. Routine use of PSI is not recommended because of the extra cost and waiting time.<bold>Level Of Evidence: </bold>I. [ABSTRACT FROM AUTHOR]
- Subjects :
- MEDICAL equipment
TOTAL knee replacement
RANDOMIZED controlled trials
COMPARATIVE studies
LEG surgery
KNEE physiology
KNEE surgery
RANGE of motion of joints
RESEARCH methodology
MEDICAL cooperation
POSTOPERATIVE period
RESEARCH
EVALUATION research
COMPUTER-assisted surgery
EQUIPMENT & supplies
Subjects
Details
- Language :
- English
- ISSN :
- 09422056
- Volume :
- 23
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Knee Surgery, Sports Traumatology, Arthroscopy
- Publication Type :
- Academic Journal
- Accession number :
- 111243477
- Full Text :
- https://doi.org/10.1007/s00167-014-3264-2