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Comparative Analysis of Diaphyseal Versus Metaphyseal Tracker Placement in Imageless Navigation Systems for Total Knee Arthroplasty

Title
Comparative Analysis of Diaphyseal Versus Metaphyseal Tracker Placement in Imageless Navigation Systems for Total Knee Arthroplasty
Author
이진규
Keywords
navigation; total knee arthroplasty; diaphyseal tracker; metaphyseal tracker
Issue Date
2019-08
Publisher
GEORG THIEME VERLAG KG
Citation
JOURNAL OF KNEE SURGERY, Page. 1-8
Abstract
This work was designed to compare the intraoperative parameters and clinical and radiologic outcomes of total knee arthroplasty (TKA) during a minimum follow-up period of 2 years and to discuss the pros and cons of two different tracker placement (diaphyseal and metaphyseal) navigation systems. The hypothesis was that there would be no clinical or radiologic difference between the two different systems. Primary TKA was performed in a total of 100 knees using the two different image-free navigation systems (group 1: diaphyseal tracker placement and group 2: metaphyseal tracker placement) with the strict gap balancing technique. Symptom severity was assessed at preoperative and at 3, 6, 12, and 24 months after surgery using the Knee Society Score (KSS) and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score. Possible adverse issues (major and minor) associated with TKA procedure were observed. Careful assessments were also made of the screw insertion site for infection, stress fractures, and any other related adverse effects. The follow-up periods for groups 1 and 2 were 38 ± 8 months and 38 ± 7 months, respectively. The minimum follow-up period was 24 months. The mechanical alignment improved to 0.1 (valgus) ± 2.2 (group 1) and 0.2 (valgus) ± 2.1 (group 2). There were no radiologic differences between the groups (p > 0.05). In both groups, the KSS and WOMAC improved from before surgery to 24 months after surgery (p < 0.0001). However, the total operation time was 50 ± 5 minutes for group 1, compared to 65 ± 13 minutes for group 2 (p < 0.0001). The metaphyseal tracker navigation system resulted in increased operation time.
URI
https://www.thieme-connect.de/products/ejournals/abstract/10.1055/s-0039-1693747https://repository.hanyang.ac.kr/handle/20.500.11754/153579
ISSN
1538-8506; 1938-2480
DOI
10.1055/s-0039-1693747
Appears in Collections:
COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
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