Component alignment in revision total knee arthroplasty using diaphyseal engaging modular offset press-fit stems.
We performed a retrospective study of the radiographic position of femoral and tibial components in a series of revision total knee arthroplasties using diaphyseal-engaging, press fit, modular stems. Fifty-two consecutive revision cases were performed. Femoral and tibial component alignment was measured preoperatively and postoperatively. The canal-filling ratio was measured and correlated with anatomic alignment. There was a trend toward improved alignment with increasing canal fill, suggesting that uncemented diaphyseal engaging press-fit modular stems facilitate accurate alignment for both femoral and tibial components in revision surgery.
Nakasone
Cass K
CK
Department of Orthopaedic Surgery, Keck School of Medicine of the University of Southern California, Health Consultation Center II, Los Angeles, California 90033, USA.
Abdeen
Ayesha
A
Khachatourians
Armond G
AG
Sugimori
Tanzo
T
Vince
Kelly G
KG
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation* / Q000379:methods; D018483:Diaphyses; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D011859:Radiography; D012086:Reoperation / Q000295:instrumentation* / Q000379:methods; D012189:Retrospective Studies; D013977:Tibia / Q000000981:diagnostic imaging* / Q000601:surgery