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KMID : 0361620070420020190
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Journal of the Korean Orthopaedic Association
2007 Volume.42 No. 2 p.190 ~ p.195
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Comparisons of 1 Year Follow-up Results between Navigation Assisted Minimally Invasive and Conventional Techniques in Bilateral Total Knee Arthroplasty
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Park Sang-Jin
Song Eun Kyoo
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Abstract
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Purpose: This study compared the clinical and radiological results using navigation assisted minimally invasive (NA-MIS) and conventional (CON) techniques in forty-two patients, who underwent bilateral TKA with a minimum follow-up of one-year.
Materials and Methods: The clinical evaluations were performed using ROM, HSS, and Western Ontario and McMaster University (WOMAC) scores at 3, 6 and 9 months, and 1 year after surgery. The patients’ subjective preferences and radiological indices, including the mechanical axis and coronal inclinations of the prostheses, were compared at 1 year after surgery.
Results: The NA-MIS TKA showed better HSS and WOMAC total scores than CON TKA up to six months. However, these differences were not significant 1 year after surgery. The ROM and other WOMAC scores were comparable in both groups at all times. More patients preferred the NA-MIS side to the CON side. The radiological results showed similar mean values between the two surgical groups, even though the NA-MIS group contained fewer outliers than the CON group.
Conclusion: Navigation assisted minimal invasive TKA is associated with better clinical results up to 6 months after surgery and shows fewer outlier results. However, the mean values in leg alignment were similar to those of conventional TKA.
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KEYWORD
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Navigation, Minimally invasive, Conventional, Total knee arthroplasty
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