Kinematic total knee arthroplasty: a 10- to 14-year prospective follow-up review.
To understand better the type and incidence of long-term complications in total knee replacement, 306 primary Kinematic total knee arthroplasties performed between June 1978 and December 1982 were prospectively reviewed in detail. The Kinematic knee is a nonconstrained, posterior cruciate-retaining prosthesis that has right and left femoral components to afford anatomic tracking of the patella. The overall revision rate was 6.5%. The most common cause for revision surgery was patellar complications. Ten revisions (3.06%) were for patellar component loosening. Two knees were revised for patella subluxation (0.65%); 1 was in a resurfaced rheumatoid patella, and 1 in an unsurfaced osteoarthritic patella. Stair climbing was better with an unsurfaced patella. Anterior knee pain was 21.8% in the unsurfaced patella and 11.2% in the replaced patella. These data suggest patella replacement is not appropriate with this design.
Ewald
F C
FC
Department of Orthopaedic Surgery, Harvard Medical School and Brigham and Women's Hospital, Boston, Massachusetts 02115, USA.
Wright
R J
RJ
Poss
R
R
Thomas
W H
WH
Mason
M D
MD
Sledge
C B
CB
D019645:Arthroplasty, Replacement, Knee / Q000379:methods / Q000706:statistics & numerical data; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000503:physiopathology; D007720:Knee Prosthesis; D008875:Middle Aged; D010329:Patella; D011183:Postoperative Complications / Q000453:epidemiology*; D011446:Prospective Studies; D011474:Prosthesis Design; D011859:Radiography; D012086:Reoperation / Q000706:statistics & numerical data; D013997:Time Factors