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.
Department of Orthopaedic Surgery, Keck School of Medicine of the University of Southern California, Health Consultation Center II, Los Angeles, California 90033, USA.
Cass K
CK
Nakasone
Ayesha
A
Abdeen
Armond G
AG
Khachatourians
Tanzo
T
Sugimori
Kelly G
KG
Vince
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