Component sizing in total knee arthroplasty: patient-specific guides vs. computer-assisted navigation
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Mark A. Yaffe
Abstract
Introduction: Patient-specific guides (PSG) and computer-assisted navigation (CAN) are technologies that have been developed to improve the accuracy and reproducibility of total knee arthroplasty (TKA). The purpose of this study is to compare the methodology by which a PSG system and an intraoperative navigation system (CAN) perform an anatomical registration and correctly predict femoral component size in TKA.
Methods: One hundred and eleven PSG TKA were performed, 30 of which were concurrently evaluated with CAN. PSG-predicted and CAN-predicted femoral component size were compared with the actual component selection. The process by which PSG and CAN determines component sizing was evaluated.
Results: The PSG system was both more accurate and more precise than the CAN navigation system in predicting femoral component size in TKA.
Conclusion: In this study, the surgeon’s final component selection was more likely to be in accordance with the PSG rather than the CAN sizing algorithm. This study suggests that intraoperative surface registration may not be as accurate as preoperative three-dimensional magnetic resonance imaging reconstructions for establishing optimal femoral component sizing.
©2012 by Walter de Gruyter Berlin Boston
Artikel in diesem Heft
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- Editorial
- Computer-assisted orthopedic surgery
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- System architecture for intraoperative ultrasound registration in image-based medical navigation
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- Computer-assisted navigation in total knee arthroplasty: a review of literature
- Component sizing in total knee arthroplasty: patient-specific guides vs. computer-assisted navigation
- A new approach to implant alignment and ligament balancing in total knee arthroplasty focussing on joint loads
- Precision freehand sculpting for unicondylar knee replacement: design and experimental validation
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Artikel in diesem Heft
- Masthead
- Masthead
- Editorial
- Computer-assisted orthopedic surgery
- Research Articles
- Fluoroscopy-based computer-assisted navigation for implant placement and hip resurfacing arthroplasty in the proximal femur: the zero-dose C-arm navigation approach
- Integrating medical devices in the operating room using service-oriented architectures
- System architecture for intraoperative ultrasound registration in image-based medical navigation
- Ultrasound-based registration of the pelvic coordinate system in the lateral position using symmetry for total hip replacement
- An ICP variant with anisotropic weighting to accommodate measurement errors in A-Mode ultrasound-based registration
- Modular design of a miniaturized surgical robot system
- Computer-assisted navigation in total knee arthroplasty: a review of literature
- Component sizing in total knee arthroplasty: patient-specific guides vs. computer-assisted navigation
- A new approach to implant alignment and ligament balancing in total knee arthroplasty focussing on joint loads
- Precision freehand sculpting for unicondylar knee replacement: design and experimental validation
- The use of computer-assisted orthopaedic surgery in complex cases of hip and knee arthroplasty: experience from a developing country
