Custom-made angled inserts for tibial coronal malalignment in total knee arthroplasty.
Component malalignment continues to be common after knee arthroplasty, with treatment often requiring prosthesis revision. From 1993 to 2005, 9 angled inserts were placed to correct coronal plane deformities due to tibial component malposition. Insert exchange occurred at an average of 67 months (range, 5-149 months) from the index procedure. Two patients died before 2-year follow-up, for an overall average of 60 months (range, 12-157 months) follow-up. Limb alignment improved and Knee Society knee and function scores increased from 68 and 71, respectively, to 92 and 91, postoperatively. All patients reported excellent satisfaction with no revisions at average 5-year follow-up. It is important to be aware that specifically designed angled inserts are available and may provide a conservative method to correct mild to moderate tibial malalignment in rare cases.
Department of Orthopedic Surgery, Brigham and Women's Hospital, Boston, Massachusetts 02114-3117, USA.
Alexander P
AP
Sah
Richard D
RD
Scott
Bryan D
BD
Springer
James V
JV
Bono
Rahul V
RV
Deshmukh
Thomas S
TS
Thornhill
D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation* / Q000379:methods*; D017760:Bone Malalignment / Q000000981:diagnostic imaging / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000502:physiology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D017755:Prosthesis Fitting / Q000295:instrumentation* / Q000379:methods*; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D012086:Reoperation / Q000295:instrumentation / Q000379:methods; D012189:Retrospective Studies; D013977:Tibia / Q000000981:diagnostic imaging / Q000601:surgery*; D016896:Treatment Outcome