[Clinical results of total knee arthroplasty using Kinematic type in patients with rheumatoid arthritis under the age of 50 years].
We reviewed 24 total knee arthroplasties using Kinematic type (anteriorly joined type or posterior cruciate retention type) in 18 rheumatoid patients who were under the age of 50 years. Thirteen knees with Kinematic type total knee arthroplasty in 10 rheumatoid patients who were over 70 years of age were also reviewed. Using rheumatoid arthritic knee rating score of J.O.A. (Japan Orthopedic Association), the clinical results of young patients were evaluated and were compared with those of elderly patients. The average total score of young patients and that of older patients was almost equally increased after arthroplasty. Postoperatively in older patients, pain score was elevated more remarkably than in young patients. However, increase in score of quadriceps muscle strength, walking ability and climbing stairs ability were less in older patients than that in young patients. Range of motion was not improved in both young and older patients. However, flexion contracture was improved remarkably in both groups.
Mitsugi
N
N
Department of Orthopeadic Surgery, School of Medicine, Yokohama City University.
Koshino
T
T
Okamoto
R
R
Aoki
S
S
Hyoudo
A
A
Noyori
K
K
D000328:Adult; D000368:Aged; D000375:Aging / Q000502:physiology; D001172:Arthritis, Rheumatoid / Q000601:surgery*; D005260:Female; D006801:Humans; D007720:Knee Prosthesis; D008875:Middle Aged; D011379:Prognosis