Changes in patellar tracking after total knee arthroplasty: 10-year follow-up of Miller-Galante I knees.
Changes in patellar tilt angle and patellar displacement were evaluated in 18 knees with the Miller-Galante I knee arthroplasty system (Zimmer, Warsaw, Ind). Mean follow-up was 10 years. Patellar tilt angle at final follow-up (5.7 degrees) was significantly larger than at 1 year postoperatively (2.8 degrees). Patellar displacement at final follow-up (5.1 mm) was significantly larger than at 1 year postoperatively (3.4 mm). Preoperatively, patellar tilt angle showed a statistically significant correlation with the change in tilting angle during follow-up. These results suggest patellar tracking can worsen during the long-term postoperative period.
Miyagi
Tomoyuki
T
Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka city, Fukuoka 812-8582, Japan.
Matsuda
Shuichi
S
Miura
Hiromasa
H
Nagamine
Ryuji
R
Urabe
Ken
K
Inoue
Sanshiro
S
Iwamoto
Yukihide
Y
D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007720:Knee Prosthesis; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery; D010329:Patella / Q000000981:diagnostic imaging; D011184:Postoperative Period; D011474:Prosthesis Design; D011859:Radiography; D016059:Range of Motion, Articular