2021 ISAKOS Biennial Congress ePoster
Comparative Analysis Of Radiological Evaluation And Early Functional Outcome Of Total Knee Arthroplasty Using Accelerometer Based Hand Held Navigation System With Conventional Instrumentation - A Randomized Controlled Prospective Study
Nuthan Jagadeesh, MS(Orthopedics), MRCS (UK), Wigan, United kingdom UNITED KINGDOM
Nuthan Jagadeesh, M S orthopedics, MRCS, Chester, United Kingdom UNITED KINGDOM
Hiranya Kumar, M S orthopedics, BANGALORE, KARNATAKA INDIA
Vydehi Institute Of Medical Sciences, BANGALORE, KARNATAKA, INDIA
FDA Status Not Applicable
Summary
Comparative analysis of radiological evaluation and early functional outcome of total knee arthroplasty using accelerometer based hand held navigation system with conventional instrumentation - a randomized controlled prospective study
ePosters will be available shortly before Congress
Abstract
Background
Accelerometer-based handheld navigation systems(HHNS) for TKA do not require the large consoles needed for computer-assisted navigation systems (CAS) and have shown to decrease component malalignment in Total Knee Arthroplasty(TKA). The purpose of this study is to compare the radiological evaluation and functional outcome of TKA using HHNS with conventional instrumentation.
Materials And Methods
This study is a multi-surgeon, prospective, assessor-blinded comparative study of 70 patients who were randomly allotted using computer software into two groups HHNS group and conventional group based on instrumentation used for TKA. Postoperative radiographic evaluation was done using tibial and femoral alignment angle, posterior tibial slope, tibiofemoral angle, and functional outcome were evaluated using Oxford knee score (OKS) and Knee society score(KSS) with the serial follow-up of up to 2 years. The data obtained were compared between two groups using appropriate statistical methods.
Results
The mean tibial alignment angle and the posterior tibial slope was 0.82±1.17°, 3.58±0.96° respectively in the HHNS cohort versus 1.59±1.19°, 2.52±1.92° in the conventional cohort which is statistically significant (p-value < 0.001). There was no statistically significant difference in femoral alignment angle. The overall alignment using the mean tibiofemoral angle was 179.21±1.55 in the HHNS group as compared to the Conventional group 178.68±1.71 and was statistically significant (p-value =0.002). No statistical difference was found in KSS and OKS at 2-year follow-up among the two groups.
Conclusions
The use of HHNS in TKA significantly increases accuracy in limb and implant alignment but there was no difference in `functional outcome at the end of 2 years follow-up.