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Extramedullary versus intramedullary tibial alignment guides for total knee arthroplasty



Extramedullary versus intramedullary tibial alignment guides for total knee arthroplasty



Orthopedics 28(12): 1445-1448



This retrospective study evaluated whether intramedullary or extramedullary tibial alignment guides are more accurate in assuring correct tibial component positioning in total knee arthroplasties (TKAs). Fifty-five TKAs were performed with the only difference being whether an intramedullary (31) or extramedullary (24) cutting guide was used. Pre- and postoperative tibiofemoral angle, tibial component alignment angle, and femoral component alignment angles were measured and the results were statistically analyzed. We also performed a subgroup analysis on the preoperative varus knees to determine if the presence of a varus deformity would have better results with either the intramedullary or extramedullary cutting guide. The 2-sample t test was used to compare the results of the two groups. The results showed no statistical difference in alignment of the tibial component when using the intramedullary or extramedullary guides.

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Accession: 049050955

Download citation: RISBibTeXText

PMID: 16366083


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