2015 ISAKOS Biennial Congress ePoster #1422
No Difference in Patient Reported Outcome Measures in Primary Total Knee Replacement Using Navigation Assisted Versus Conventional Surgical Technique
Kiran Singisetti, MS, MRCS, FRCS (Tr & Orth), Newcastle Upon Tyne UNITED KINGDOM
Zaid Abual-Rub, MBBS, MRCS Ed, Newcastle Upon Tyne UNITED KINGDOM
Karthikeyan Muthumayandi , MPTh, MPhil, Newcastle Upon Tyne UNITED KINGDOM
David Weir, FRCS (Tr & Orth), Newcastle Upon Tyne UNITED KINGDOM
Freeman Hospital, Newcastle Upon Tyne, UNITED KINGDOM
FDA Status Cleared
Summary: Prospective comparative study showing no difference in patient reported outcome measures in primary total knee replacement using navigation assisted versus conventional surgical technique
Navigation technique for total knee replacement has been shown to improve accuracy of prosthesis alignment in several studies though it is unclear whether this translates to improved patient satisfaction. The purpose of this study was to compare the patient reported outcome measures in primary total knee replacement (TKR) using navigation versus conventional surgical technique at one and two years follow up.
A retrospective review of prospectively collected patient reported outcome data for 351 consecutively performed primary TKR was undertaken. The study group (N= 113) included patients who had Triathlon TKR using Articular Surface Mounted (Triathlon, ASM ® Stryker) navigation technique (femoral cut only) and control group (N=238) included patients who had Triathlon TKR using conventional jig.
In addition to the WOMAC (Western Ontario and McMaster University Osteoarthritis Index) and SF-36 (Medical Outcomes Trust Short Form-36), a short self-report questionnaire evaluating the level of satisfaction, quality of life and whether patients would undergo knee replacement again were recorded
WOMAC: No significant difference between the groups was noted in mean WOMAC pain, function and stiffness scores at one and two years follow up.
SF -36: No significant difference between the groups was seen except in the Physical Function component of score at 1 year (P=0.019). Navigation group mean 56.78 (CI 51.06 to 62.5) versus conventional group mean 48.34 (CI 44.68 to 52.01) but this difference was not observed at two year follow up.
The overall patient reported outcome scores improved after total knee replacement but appear to be comparable in both groups at one and two year follow up.