Huang R. Orthopedics. 2014. doi:10.3928/01477447-20140825-57.
Revision total knee arthroplasty with metaphyseal sleeves provided reliable fixation at short-term follow-up, according to study results.
Researchers followed 96 knees that underwent revision total knee arthroplasty (TKA) with metaphyseal sleeves, of which 83 met the minimum 2-year follow-up criteria. Thirty-six sleeves were used in femoral revisions and 83 sleeves were used in tibial revisions. The researchers classified defects according to the Anderson Orthopaedic Research Institute classification, with femoral defects classified as type I in four knees, type IIb in 25 knees and type III in seven knees. Nine knees were classified as having type I tibial defects, whereas type IIa tibial defects were found in one knee, type IIb defects in 68 knees and type III defects in five knees.
Study results showed improvement in mean Knee Society Function score, from 47.9 to 61.1 points; mean SF-36 physical score, from 43.3 to 56.3 points; and mean WOMAC score, from 55.3 to 25.9 points.
The researchers found no progressive radiolucent lines around the metaphyseal sleeves of implants. Only 2.7% of tibial components required revision for aseptic loosening at final follow-up.
Disclosures: Ong is a paid consultant for Stryker, Smith & Nephew and Zimmer. Orozco is a paid consultant for Stryker. Austin received royalties from Zimmer and research support from DePuy.
